ML073240747

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Electrical Design Parameters of Typical 230kv and 500kv Transmission Lines Terminating Into Plant Vogtle
ML073240747
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 11/05/2007
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Office of Nuclear Reactor Regulation
References
NL-07-2097
Download: ML073240747 (45)
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Electrical Design Parameters of Typical 230kv and 500kv Transmission Lines Terminating into Plant Vogtle The following includes electrical design parameters and EMF calculations for typical 230kv and 500kv transmission lines terminated into Plant Vogtle.In addition, a 1994 IEEE conference paper is included that covers an extensive analysis and measurements of radio noise characteristic of two 500kv lines located near Atlanta, Georgia.Contents: SectionI-230kv H-Frame Transmission Line Structure Sketch EMF Summary Audible Noise Radio Noise Electric Fields Electrical Coupling to Truck Magnetic Fields Results of EPRI's ACDCLINE Program Graphs of Magnetic and Electric Fields Section II-500kv H-Frame Transmission Line Structure Sketch EMF Summary Audible Noise Radio Noise Electric Fields Electrical Coupling to Truck Magnetic Fields Results of EPRI's ACDCLINE Program Graphs of Magnetic and Electric Fields IEEE Conference Paper 500kv Transmission Line Radio Noise Performance Section I 230kv H-Frame Transmission Line Southern Company Services, Project: "230kv_h-frame_emf.pfl" Version 7.30, 5:01:43 PM Wednesday, July 06, 2005 Load case displayed:

Undeformed Geometry'I:\,.\L Z.D 2 30 K'"\-\-'F Rf:\"" E..

Sub c:...c)N\:)V<..ICi<...

{Y\F\Q,c.-lr.....uv CT"ol'Z...

3/E!>"-"7 STNS\Eo L t:::>V'l\<<..E:..\?..'S'

-

\.\\j 7/12/2005 EMF Summary-EPRI ACDCLINE Type Construction:

230 kv Horizontal H-Frame-(NESC Light Zone-No Sun)Distance From Shieldwire to Conductor Attachment (ft)Overage Voltage%Right-of-Way Width (ft)Ruling Span (ft)1300 No.Of Sub-Cond Height to Str H-Dist from Centerline Final Saas in Rulina Soan Sub-Spacing Conductor Temperature (Deg F)120 167 212 Cond (in)Attachment Left Middle Right Shieldwire:

13/8" HS Steel 26.0 94.8-10.8 0.0 10.8 Conductor:

I Martin 39.0 42.5 45.7 1 75.7-20.0 0.0 20.0 Minimum Ground Clearance 36.6 33.2 30.0*Conductor Temperature (Deg 120 167 212 F)Ampacity (Amps)6gg 1141.t4p6 Power (mva)251 455 580 Audible Noise (db(A>>@Edge of RIW L50 Fair 2 3 Condition L5 Rain 4 1 L50 Rain R Ampacity Rating Parameters Ambient Temp (deg F).*104 Wind Speed (ft/sec)2 Wind Direction 90 Solar Gain Radio Noise@500kHz (db)@EdgeofRIW 40.5 40.6 40.5 Avg Fair Weather Wet Conductor Avg Foul Condition j.,:.W.;-e;:.:a:.;,th;.;;e=r....,...._I-=-l_..",.,,_-1-'"'::":'-:--i Hea Rain Electric Field Edge of R/W (kv/m)Maximum (kv/m)Distance of Maximum Level from Center Line (ft)Electrical Coupling to Truck Height 13.5 Size (ft)Width Length 8.5 65 Short Circuit Current (ma)O*t r Perpendicular nen a Ion Parallel 1.1 I 1.24 I 1.38 2.5 I 2.94 I 3.42 Magnetic Field Edge of R/W (mg)Maximum (mg)31.7 I 61.76 I 318.6 98.26 I 211.48 I 82.89 Distance of Maximum from Center Line (ft)o o Results of AC/DCLINE program CORONA (EPRI/HVTRC 7-93)for: SURFACE GRADIENTS at AVERAGE LINE HEIGHT CORONA LOSS AUDIBLE NOISE Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/12/2005 Time: 10:46 CASE1 230kv H-Frame-242kv@120Deg/36.66'gnd el, 629A No Sun**************************************************************************

  • BUNDLE INFORMATION

I11 VOLTAGE I CURRENT1#I BUNDLE COORDINATES 1 I BNDL I CIRCIVOLTAGE 1 ANGLE I LOAD I ANGLE 1 OF IXY SAG 1 PH I#I#1 (kV)1 (DEG)I (A)(DEG)I COND 1 (feet)1 (feet)1 (feet)II**************************************************************************31 242.01 0*1 629*1 O.I 1-20.01 75.71 39.01 A41 242.01 240.I 629*1 240*1 1.0 I 75.71 39.01 B51 242.01 120*1 629.I 120*1 1 20.01 75.71 39.01 C 1 1.01 0*10*10*1 1-10.81 94.81 26.01 GND 1 2 1 1 1.01 O.I 0*1 0*1 1 I 10.81 94.81 26.01 GND I**************************************************************************

  • MINIMUM GROUND CLEARANCE 36.66 feet**POWER SYSTEM FREQUENCY 60.Hz**SOIL RESISTIVITY 100.ohm meter***************************************************************************
  • SUBCONDUCTOR INFORMATION

-REGULAR BUNDLES******************************************************************************

IBNDL 1 CONDUCTOR I DIAMETER I SPACING 1 DC RESIST 1 AC RESIST I AC REACT I 1#1 NAME 1 (inch)I (inch)1 (ohm/mile) 1 (ohm/mile) 1 (ohm/mile) 1*****************************************************************************

3 I MARTIN I 1.420 1.000 I.0680.0710.3680 4 I MARTIN I 1.420 1.000 I.0680.0710

.3680 5 I MARTIN 1 1.420 1.000 1.0680.0710.3680 1 13/8HS 1.360 I.0001 6.5100 6.7500 1.500012 13/8HS 1.360.0001 6.5 100 1 6.7500 I 1.50001*****************************************************************************

o************************************

      • MAXIMUM SURFACE GRADIENT (kV/cm)***************************************

BNDL#Type ACrms PEAK(+)PEAK(-)-----------------------------------3 AC 12.69 17.94-17.94 4 AC 13.61 19.25-19.25 5 AC 12.69 17.94-17.94 1 Ground Wire 1.86 2.63-2.63 2 Ground Wire 1.86 2.63-2.63 0***************************

      • CORONA LOSS (kW/MILE)***

AC LOSS AVERAGE FAIR.0 MAXIMUM FAIR.0 AVERAGE RAIN(*)8.2 MAXIMUM RAIN (#)16.7 AVERAGE YEAR(**).4 MAXIMUM (##)3.7 o (*)Rain intensity.03 in/hour (#)Heavy rain (.5 to 1 in/hour)which may occur in a short section of line.(**)Accounts for the mix of fair and foul weather.(##)Maximum loss for a long line coincidental with maximum load.*********************************

    • AUDIBLE NOISE GENERATED ACOUSTIC POWER (dB above 1W/m)**

BNDL#Type Summer Fair L5 RAIN L50 RAIN********************************************

o 3 AC 4 AC 5 AC 1 Ground Wire 2 Ground Wire-82.58-76.87-82.58************-59.51-55.93-59.51************-71.38-66.44

-71.38******

            • AUDIBLE NOISE******Microphone is Altitude 5.00 feet above ground 1000.0 feet*****

<----------

HVTRC CALCULATION METHOD---------->

LATERAL L50 L5 L50 DISTANCE FAIR RAIN RAIN Leg(24)Ldn (feet)(meters)(dB (A))(dB (A))(dB (A))(dB(A))(dB(A))

150.0-45.72 21.6 43.4 32.350.858.2-145.0-44.20 21.8 43.6 32.5 51.0 58.4-140.0-42.67 21.9 43.7 32.6 51.1 58.5-135.0-41.15 22.1 43.9 32.8 51.3 58.7-130.0-39.62 22.3 44.1 33.0 51.5 58.9-125.0-38.10 22.5 44.3 33.2 51.7 59.1-120.0-36.58 22.6 44.5 33.4 51.9 59.3-115.0-35.05 22.8 44.7 33.6 52.1 59.5-110.0-33.53 23.0 44.9 33.7 52.2 59.7-105.0-32.00 23.2 45.1 34.0 52.5 59.9-100.0-30.48 23.4 45.3 34.2 52.7 60.1-95.0-28.96 23.7 45.5 34.4 52.9 60.3-90.0-27.43 23.9 45.7 34.6 53.1 60.5-85.0-25.91 24.1 45.9 34.8 53.3 60.7-80.0-24.38 24.3 46.2 35.1 53.6 61.0-75.0-22.86 24.6 46.4 35.3 53.8 61.2-70.0-21.34 24.8 46.6 35.5 54.0 61.5-65.0-19.81 25.1 46.9 35.8 54.3 61.7-60.0-18.29 25.3 47.1 36.0 54.5 62.0

-55.0-16.76 25.6 47.4 36.3 54.8 62.2-50.0-15.24 25.8 47.7 36.6 55.1 62.5-45.0-13.72 26.1 47.9 36.8 55.3 62.7-40.0-12.19 26.3 48.2 37.1 55.5 62.9-35.0-10.67 26.6 48.4 37.3 55.8 63.2-30.0-9.14 26.8"48.6 37.5 56.0 63.4-25.0-7.62 27.0 48.8 37.7 56.1 63.5-20.0-6.10 27.2 49.0 37.9 56.3 63.7-15.0-4.57 27.3 49.1 38.0 56.4 63.8-10.0-3.05 27.5 49.2 38.2 56.5 63.9-5.0-1.52 27.5 49.3 38.2 56.6 64.0.0.00 27.5 49.3 38.2 56.6 64.0 5.0 1.52 27.5 49.3 38.2 56.6 64.0 10.0 3.05 27.5 49.2 38.2 56.5 63.9 15.0 4.57 27.3 49.1 38.0 56.4 63.8 20.0 6.10 27.2 49.0 37.9 56.3 63.7 25.0 7.62 27.0 48.8 37.7 56.1 63.5 30.0 9.14 26.8 48.6 37.5 56.0 63.4 35.0 10.67 26.6 48.4 37.3 55.8 63.2 40.0 12.19 26.3 48.2 37.1 55.5 62.9 45.0 13.72 26.1 47.9 36.8 55.3 62.7 50.0 15.24 25.8 47.7 36.6 55.1 62.5 55.0 16.76 25.6 47.4 36.3 54.8 62.2 60.0 18.29 25.3 47.1 36.0 54.5 62.0 65.0 19.81 25.1 46.9 35.8 54.3 61.7 70.0 21.34 24.8 46.6 35.5 54.0 61.5 75.0 22.86 24.6 46.4 35.3 53.8 61.2 80.0 24.38 24.3 46.2 35.1 53.6 61.0 85.0 25.91 24.1 45.9 34.8 53;3 60.7 90.0 27.43 23.9 45.7 34.6 53.1 60.5 95.0 28.96 23.7 45.5 34.4 52.9 60.3 100.0 30.48 23.4 45.3 34.2 52.7 60.1 105.0 32.00 23.2 45.1 34.0 52.5 59.9 110.0 33.53 23.0 44.9 33.7 52.2 59.7 115.0 35.05 22.8 44.7 33.6 52.1 59.5 120.0 36.58 22.6 44.5 33.4 51.9 59.3 125.0 38.10 22.5 44.3 33.2 51.7 59.1 130.0 39.62 22.3 44.1 33.0 51.5 58.9 135.0 41.15 22.1 43.9 32.8 51.3 58.7 140.0 42.67 21.9 43.7 32.651.158.5 145.0 44.20 21.8 43.6 32.5 51.0 58.4 150.0 45.72 21.6 43.4 32.3 50.8 58.2 D*******************************

      • AUDIBLE NOISE**(other methods)****Altitude 1000.0 feet**********************************

<------BPA METHOD-------><-CRIEPI-->EdF ENEL IREQ LATERAL FAIR L5 L50 AVERAGEL5L5 L5 L5 DISTANCE WEATHER RAIN RAIN Ldn FAIR RAIN RAINRAINRAIN (feet)(meters)dB (A)dB (A)dB (A)dB (A)dB (A)dB (A)dB (A)dB (A)dB (A)----------------------------------------------

150.0-45.72 10.9 39.4 35.9.0.0.0 38.7 39.9.0-145.0-44.20 11.1 39.6 36.1.0.0.0 38.8 40.1.0-140.0-42.67 11.2 39.7 36.2.0.0.0 39.0 40.2.0-135.0-41.15 11.439.936.4.0.0.0 39.1 40.3.0-130.0-39.62 11.6 40.1 36.6.0.0.0 39.3 40.5.0-125.0-38.10 11.8 40.3 36.8.0.0.0 39.4 40.7.0-120.0-36.58 11.9 40.4 36.9.0.0.0 39.6 40.8.0-115.0-35.05 12.1 40.6 37.1.0.0.0 39.7 41.0.0

-110.0-33.53 12.3 40.8 37.3.0.0.0 39.9 41.1.0-105.0-32.00 12.5 41.0 37.5.0.0.0 40.1 41.3.0-100.0-30.48 12.7 41.2 37.7.0.0.0 40.3 41.5.0-95.0-28.96 12.9 41.4 37.9.0.0.0 40.5 41.7.0-90.0-27.43 13.2 41.7 38.2.0.0.0 40.7 41.9.0-85.0-25.91 13.4 41.9 38.4.0.0.0 40.9 42.1.0-80.0-24.38 13.6 42.1 38.6.0.0.0 41.1 42.3.0-75.0-22.86 13.9 42.4 38.9.0.0.0 41.3 42.5.0-70.0-21.34 14.1 42.6 39.1.0.0.0 41.5 42.7.0-65.0-19.81 14.4 42.9 39.4.0.0.0 41.7 42.9.0-60.0-18.29 14.6 43.1 39.6.0.0.0 41.9 43.2.0-55.0-16.76 14.9 43.4 39.9.0.0.0 42.2 43.4.0-50.0-15.24 15.2 43.7 40.2.0.0.0 42.4 43.6.0-45.0-13.72 15.4 43.9 40.4.0.0.0 42.6 43.9.0-40.0-12.19 15.744.240.7.0.0.0 42.9 44.1.0-35.0-10.67 15.944.440.9.0.0.0 43.1 44.3.0-30.0-9.14 16.2 44.7 41.2.0.0.0 43.3 44.5.0-25.0-7.62 16.4 44.9 41.4.0.0.0 43.5 44.7.0-20.0-6.10 16.5 45.0 41.5.0.0.0 43.6 44.8.0-15.0-4.57 16.7 45.2 41.7.0.0.0 43.7 45.0.0-10.0-3.05 16.8 45.3 41.8.0.0.0 43.8 45.1.0-5.0-1.52 16.9 45.4 41.9.0.0.0 43.9 45.1.0.0.00 16.9 45.4 41.9.0.0.0 43.9 45.1.0 5.0 1.52 16.9 45.4 41.9.0.0.0 43.9 45.1.0 10.0 3.05 16.8 45.3 41.8.0.0.0 43.8 45.1.0 15.0 4.57 16.7 45.2 41.7.0.0.0 43.7 45.0.0 20.0 6.10 16.5 45.0 41.5.0.0.0 43.6 44.8.0 25.0 7.62 16.4 44.9 41.4.0.0.0 43.5 44.7.0 30.0 9.14 16.2 44.7 41.2.0.0.0 43.3 44.5.0 35.0 10.67 15.944.440.9.0.0.0 43.1 44.3.0 40.0 12.19 15.744.240.7.0.0.0 42.9 44.1.0 45.0 13.72 15.4 43.9 40.4.0.0.0 42.6 43.9.0 50.0 15.24 15.2 43.7 40.2.0.0.0 42.4 43.6.0 55.0 16.76 14.9 43.4 39.9.0.0.0 42.2 43.4.0 60.0 18.29 14.6 43.1 39.6.0.0.0 41.9 43.2.0 65.0 19.81 14.4 42.9 39.4.0.0.0 41.7 42.9.0 70.0 21.34 14.1 42.6 39.1.0.0.0 41.5 42.7.0 75.0 22.86 13.9 42.4 38.9.0.0.0 41.3 42.5.0 80.0 24.38 13.6 42.1 38.6.0.0.0 41.1 42.3.0 85.0 25.91 13.4 41.9 38.4.0.0.0 40.9 42.1.0 90.0 27.43 13.2 41.7 38.2.0.0.0 40.7 41.9.0 95.0 28.96 12.9 41.4 37.9.0.0.0 40.5 41.7.0 100.0 30.48 12.7 41.2 37.7.0.0.0 40.3 41.5.0 105.0 32.00 12.5 41.0 37.5.0.0.0 40.1 41.3.0 110.0 33.53 12.3 40.8 37.3.0.0.0 39.9 41.1.0 115.0 35.05 12.1 40.6 37.1.0.0.0 39.7 41.0.0 120.0 36.58 11.9 40.4 36.9.0.0.0 39.6 40.8.0 125.0 38.10 11.8 40.3 36.8.0.0.0 39.4 40.7.0 130.0 39.62 11.6 40.1 36.6.0.0.0 39.3 40.5.0 135.0 41.15 11.4 39.9 36.4.0.0.0 39.1 40.3.0 140.0 42.67 11.2 39.7 36.2.0.0.0 39.0 40.2.0 145.0 44.20 11.139.636.1.0.0.0 38.8 40.1.0 150.0 45.72 10.9 39.4 35.9.0.0.0 38.7 39.9.0 Audible noise prediction methods do not apply to all line geometries, voltages, or weather conditions.

If a prediction method does not apply, the appropriate output data column will be zeros.0------------------------------------------------------------

Results of AC/DCLINE program RADIO (EPRI/HVTRC 7-93)for:------------------------------------------------------------

RADIO NOISE Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/12/2005 Time: 10:46 MODE NO.1 2 3 ATTN (dB/mi).5415E-01.2280E+00.2721E+01 ATTN (neper/ft)

.1181E-05

.4973E-05.5936E-04************************************

      • MAXIMUM SURFACE GRADIENT (kV/cm)***************************************

BNDL#Type ACrms PEAK(+)PEAK(-)-----------------------------------

3 AC 12.69 17.94-17.94 4 AC 13.61 19.25-19.25 5 AC 12.69 17.94-17.94 1 Ground Wire 1.86 2.63-2.63 2 Ground Wire 1.86 2.63-2.63 0***************************

      • RADIO NOISE**GENERATION FUNCTION**(dB above 1uA/sqrt(m))

BNDL#Type Average Stable Foul L1 Rain L50 Rain o 3 4 5 AC AC AC 26.47 30.15 26.47 34.46 37.58 34.46 22.58 27.07 22.58****************************

      • RADIO NOISE PROFILES**at 500.00 kHz****ANSI, loop antenna**ALTITUDE 1000.0 ft*****************************

Lateral Average Stable Foul Heavy Rain Wet Conductor Distance Weather Noise (1,2)Noise (3)Noise (3)(feet)(meters)(dB)(dB)(dB)---------------------------------

-150.0-45.72 43.7 51.5 40.0-145.0-44.20 44.4 52.3 40.7-140.0-42.67 45.2 53.0 41.5-135.0-41.15 45.9 53.8 42.3-130.0-39.62 46.7 54.6 43.1-125.0-38.10 47.6 55.4 43.9-120.0-36.58 48.5 56.3 44.8-115.0-35.05 49.4 57.2 45.7-110.0-33.53 50.3 58.2 46.6-105.0-32.00 51.3 59.2 47.6-100.0-30.48 52.4 60.2 48.7-95.0-28.96 53.4 61.3 49.7-90.0-27.43 54.6 62.4 50.9-85.0-25.91 55.7 63.6 52.0-80.0-24.38 56.9 64.8 53.3-75.0-22.86 58.2 66.1 54.5-70.0-21.34 59.5 67.3 55.8

-65.0-19.81 60.8 68.7 57.1-60.0-18.29 62.1 70.0 58.4-55.0-16.76 63.4 71.3 59.7-50.0-15.24 64.6 72.5 60.9-45.0-13.72 65.8 73.6 62.1-40.0-12.19 66.7 74.6 63.0-35.0-10.67 67.3 75.2 63.6-30.0-9.14 67.6 75.5 63.8-25.0-7.62 67.5 75.5 63.8-20.0-6.10 67.4 75.3 63.7-15.0-4.57 67.8 75.6 64.3-10.0-3.05 68.8 76.4 65.5-5.0-1.52 69.8 77.3 66.5.0.00 70.2 77.7 66.9 5.0 1.52 69.8 77.3 66.5 10.0 3.05 68.8 76.4 65.5 15.0 4.57 67.8 75.6 64.3 20.0 6.10 67.4 75.3 63.7 25.0 7.62 67.5 75.5 63.8 30.0 9.14 67.6 75.5 63.8 35.0 10.67 67.3 75.2 63.6 40.0 12.19 66.7 74.6 63.0 45.0 13.72 65.8 73.6 62.1 50.0 15.24 64.6 72.5 60.9 55.0 16.76 63.4 71.3 59.7 60.0 18.29 62.1 70.0 58.4 65.0 19.81 60.8 68.7 57.1 70.0 21.34 59.5 67.3 55.8 75.0 22.86 58.2 66.1 54.5 80.0 24.38 56.9 64.8 53.3 85.0 25.91 55.7 63.6 52.0 90.0 27.43 54.6 62.4 50.9 95.0 28.96 53.4 61.3 49.7 100.0 30.48 52.4 60.2 48.7 105.0 32.00 51.3 59.2 47.6 110.0 33.53 50.3 58.2 46.6 115.0 35.05 49.4 57.2 45.7 120.0 36.58 48.5 56.3 44.8 125.0 38.10 47.6 55.4 43.9 130.0 39.62 46.7 54.6 43.1 135.0 41.15 45.9 53.8 42.3 140.0 42.67 45.2 53.0 41.5 145.0 44.20 44.4 52.3 40.7 150.0 45.72 43.7 51.5 40.0 (1)The"Average Stable Foul Weather" noise is calculated using an empirical expression for the radio noise excitation function that was derived (see REF.[A])to best fit the long term radio noise measurements of existing lines (in the 345 kV to 765 kV range).This generation function is used also in the program RNOISE, which is applicable to AC transmission lines.If AC lines are not present, the"Average Stable Foul Weather" column contains zeros.(2)The"Average Fair Weather" radio noise values can be obtained by subtracting 21.6 dB from the"Average Stable Foul Weather" radio noise data.(3)The"Heavy Rain" and the"Wet Conductor" radio noise levels, are defined in the EPRI's Transmission Line Reference Book-345 kV and Above.The equations for the excitation functions for AC conductors are derived from the Reference Book and are applicable for large ranges of surface gradients (from 10 to 25 kV/cm), subconductor diameters (2 to 8 cm)and number of subconductors (1 to 12).The equations for the excitation functions for DC and HYBRID line conductors are derived from the EPRI RP 2472-6.Heavy rain was defined as rain with intensity of the order of8-12 mm/hr.In the Northeastern climate, the"Heavy Rain" noise is exceeded only 1%of the time during periods of rain."Wet Conductor" noise corresponds to the condition of the conductor saturated with water drops and with little noise caused by the impingement of rain droplets.Experimental data from which the equations for the"Wet Conductor" noise were derived, indicate that the"Wet Conductor" noise is exceeded 50%of the time during natural rain periods."Wet Conductor" noise also corresponds to the maximum noise that can be produced during fog.

REFERENCES:

[A]R.G.Olsen, S.D.Schennum and V.L.Chartier,"Comparison of Several Methods for Calculating Power Line Electromagnetic 7nterference Levels and Calibration with Long Term Data", EPRI report, Project RP-2025, 1991.===========================================================================

o Results of AC/DCLINE program EFION (EPRI/HVTRC 7-93)for: SURFACE GRADIENTS at ACTUAL LINE HEIGHT ELECTRIC FIELD&IONS WITHOUT SHIELDING OBJECTS SENSATION LEVELS Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/12/2005 Time: 10:46************************************

      • MAXIMUM SURFACE GRADIENT (kV/cm)***************************************

BNDL#Type ACrms PEAK(+)PEAK(-)-----------------------------------3 AC12.7618.05

-18.05 4 AC 13.61 19.24-19.24 5 AC12.7618.05

-18.05 1 Ground Wire 1.44 2.04-2.04 2 Ground Wire 1.44 2.04-2.04 0***************************************

      • AC at ELECTRIC FIELD PROFILE 3.28 feet above ground******longitudinal distance: 650.00 feet******************************************

LATERAL MAXIMUM MINOR/MAJOR SPACE DISTANCE FIELD ELLIPSE AXES VERTICAL HORIZONTAL POTENTIAL (feet)(meters)(kV/m)(ratio)(kV/m)(kV/m)(kV)-------------------------------------------------------------150.0-45.72.102.002.101.006.102-145.0-44.20.112.002.112.007.112-140.0-42.67

.123.002.123.008.123-135.0-41.15

.136.001.136.009.136-130.0-39.62.151.001.151.011.151-125.0-38.10.169.001.168.012.169-120.0-36.58.189.001.188.014.189-115.0-35.05.212.001.211.016.212

-110.0-33.53.239.001.238.019.238

-105.0-32.00.270.001.269.022.270-100.0-30.48.307.000.306.026.307-95.0-28.96.350.000.349.031.350-90.0-27.43.402.000.400.037.401-85.0-25.91.463.000.461.044.462-80.0-24.38.536.000.533.052.535-75.0-22.86.622.000.619.062.622-70.0-21.34.726.000.722.074.725-65.0-19.81.849.001.844.087.847-60.0-18.29.993.002.988.102.991-55.0-16.76 1.160.003 1.154.116 1.157-50.0-15.24 1.348.005 1.342.128 1.344-45.0-13.72 1.550.008 1.544.133 1.543-40.0-12.19 1.749.014 1.745.125 1.740-35.0-10.67 1.920.022 1.917.100 1.907-30.0-9.14 2.022.034 2.022.076 2.005-25.0-7.62 2.016.053 2.015.119 1.993-20.0-6.10 1.876.084 1.871.211 1.848-15.0-4.57 1.612.134 1.598.302 1.577-10.0-3.05 1.276.218 1.255.362 1.237-5.0-1.52.961.361.945.389.925.0.00.811.494.811.395.788 5.0 1.52.961.361.945.389.925 10.0 3.05 1.276.218 1.255.362 1.237 15.0 4.57 1.612.134 1.598.302 1.577 20.0 6.10 1.876.084 1.871.211 1.848 25.0 7.62 2.016.053 2.015.119 1.993 30.0 9.14 2.022.034 2.022.076 2.005 35.0 10.67 1.920.022 1.917.100 1.907 40.0 12.19 1.749.014 1.745.125 1.740 45.0 13.72 1.550.008 1.544.133 1.543 50.0 15.24 1.348.005 1.342.128 1.344 55.0 16.76 1.160.003 1.154.116 1.157 60.0 18.29.993.002.988.102.991 65.0 19.81.849.001.844.087.847 70.0 21.34.726.000.722.074.725 75.0 22.86.622.000.619.062.622 80.0 24.38.536.000.533.052.535 85.0 25.91.463.000.461.044.462 90.0 27.43.402.000.400.037.401 95.0 28.96.350.000.349.031.350 100.0 30.48.307.000.306.026.307 105.0 32.00.270.001.269.022.270 110.0 33.53.239.001.238.019.238 115.0 35.05.212.001.211.016.212 120.0 36.58.189.001.188.014.189 125.0 38.10.169.001.168.012.169 130.0 39.62.151.001.151.011.151 135.0 41.15.136.001.136.009.136 140.0 42.67.123.002.123.008.123 145.0 44.20.112.002.112.007.112 150.0 45.72.102.002.101.006.102 0*********************************************

      • SENSATION LEVEL PROFILES**(based on 95%summer fair weather values)************************************************

LATERAL DISTANCE (feet)(meters)HAIR UMBRELLA ROD-----------------------150.0-45.72.0.0.0 o-145.0-140.0-135.0-130.0-125.0-120.0-115.0-110.0-105.0-100.0-95.0-90.0

-85.0

-80.0

-75.0

-70.0-65.0-60.0

-55.0-50.0-45.0-40.0-35.0-30.0-25.0

-20.0

-15.0

-10.0-5.0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0-44.20-42.67-41.15-39.62-38.10

-36.58-35.05-33.53-32.00

-30.48

-28.96-27.43-25.91

-24.38-22.86

-21.34-19.81

-18.29-16.76-15.24-13.72-12.19-10.67-9.14-7.62-6.10-4.57-3.05-1.52.00 1.52 3.05 4.57 6.10 7.62 9.14 10.67 12.19 13.72 15.24 16.76 18.29 19.81 21.34 22.86 24.38 25.91 27.43 28.96 30.48 32.00 33.53 35.05 36.58 38.10 39.62 41.15 42.67 44.20 45.72.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.1.1

.1.1.1.1.1.1.1.0.0.0.1.1.1.1

.1.1.1.1.1.0.0.0.0.0

.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.1.1.1.1

.1.2.2.2.3.5.6

.6

.6

.5.4.2

.2.1.2.2

.4.5.6.6

.6.5.3.2.2.2.1.1

.1.1.1

.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.1.1.1.1.1

.1.2.2.2.3

.3

.3.3.3.2.2.1.1.1.2

.2.3.3.3.3.3.2.2.2.1.1.1.1.1.1.1.0.0.0.0.0.0.0.0.0.0.0.0 Results of AC/DCLINE program COUPLE (EPRI/HVTRC 7-93)for: COUPLING to OBJECTS&SHIELDING by OBJECTS Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/12/2005 Time: 10:46 o DATE: 7/12/2005 TIME: 10:46******************************************************

      • ELECTRICAL COUPLING TO OBJECTS**INCLUDING EFFECTS OF 1 SHIELDING OBJECTS****OBJECT TYPE 2**LONG BOX (LONG VEHICLE)*********************************************************

EQUIVALENT COUPLED OBJECT AREA=3773.93 ft**2 CALCULATED CAPACITANCE TO GROUND 100000.pF CALCULATED RESISTANCE TO GROUND.02 kohms (1%RESISTANCE VALUE MEASURED FOR VEHICLES WITH THE SAME CAPACITANCE, IN DIFFERENT WEATHER CONDITIONS AND ON DIFFERENT PAVEMENTS-NORTHEAST USA)LATERAL AND LONGITUDINAL DISTANCE TO OBJECT CENTER=30.00 650.00 feet AC SHORT CIRCUIT CURRENT=1.10 rnA THEORETICAL MAXIMUM AC VOLTAGE TO GROUND 1%AC VOLTAGE TO GROUND 50%AC VOLTAGE TO GROUND o 29.V 16.V 2.V DATE: 7/12/2005 TIME: 10:46******************************************************

      • ELECTRICAL COUPLING TO OBJECTS**INCLUDING EFFECTS OF 1 SHIELDING OBJECTS****OBJECT TYPE 2**LONG BOX (LONG VEHICLE)*********************************************************

EQUIVALENT COUPLED OBJECT AREA=3773.93 ft**2 CALCULATED CAPACITANCE TO GROUND 100000.pF CALCULATED RESISTANCE TO GROUND.02 kohms (1%RESISTANCE VALUE MEASURED FOR VEHICLES WITH THE SAME CAPACITANCE, IN DIFFERENT WEATHER CONDITIONS AND ON DIFFERENT PAVEMENTS-NORTHEAST USA)LATERAL AND LONGITUDINAL DISTANCE TO OBJECT CENTER=30.00 650.00 feet AC SHORT CIRCUIT CURRENT=2.50 rnA\THEORETICAL MAXIMUM AC VOLTAGE TO GROUND 1%AC VOLTAGE TO GROUND 50%AC VOLTAGE TO GROUND o DATE: 7/12/2005 TIME: 10:46 66.V 37.V 6.V******************************************

        • LATERAL PROFILE IN PRESENCE OF SHIELDING OBJECTS*****longitudinal distance: 650.00 feet*

LATERAL DISTANCE (feet)(meters)AC FIELD (kV/m)o-100.0-95.0-90.0-85.0-80.0-75.0-70.0-65.0

-60.0

-55.0

-50.0-45.0-40.0-35.0

-30.0

-25.0

-20.0-15.0

-10.0-5.0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0-30.48

-28.96-27.43-25.91-24.38-22.86-21.34-19.81-18.29-16.76-15.24-13.72-12.19

-10.67-9.14-7.62-6.10-4.57

-3.05-1.52.00 1.52 3.05 4.57 6.10 7.62 9.14 10.67 12.19 13.72 15.24 16.76 18.29 19.81 21.34 22.86 24.38 25.91 27.43 28.96 30.48.3055.3487

.3997.4603.5324.6185

.7210.8429.9864 1.1530 1.3413 1.5446 1.7476 1.9230 2.0308 2.0273 1.8835 1.6093 1.2651.9562.8231

.9551 1.2635 1.6076 1.8818 2.0256 2.0291 1.9213 1.7460 1.5429 1.3396 1.1514.9848.8412.7194.6169.5308

.4587.3982

.3472.3041 Results of AC/DCLINE program MAGFLD (EPRI/HVTRC 7-93)for: MAGNETIC FIELD CALCULATIONS Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/12/2005 Time: 10:46 AC CURRENTS IN EACH BUNDLE:-----AC CURRENTS (Amperes)BNDL BUNDLE POSITION o#3 4 5 1 2 REAL 629.00-314.50-314.50-3.28 1.42 IMAGINARY.00-544.73 544.73-1.03 3.58 TOTAL 629.00 629.00 629.00 3.44 3.85 X-COORD-20.00.00 20.00-10.79 10.79 Y-COORD 75.67 75.67 75.67 94.75 94.75***************************************

      • MAGNETIC FIELD PROFILE at 3.28 feet above ground******longitudinal distance: 650.00 feet******************************************

LATERAL DISTANCE (feet)(meters)<-----------

AC MAGNETIC FIELD------------>

MAJOR MINOR/VERTICAL HORIZONTAL RMS AXIS MAJOR COMP COMP RESULTANT (mG)(RATIO)(mG)(mG)(mG)-150.0-145.0-140.0-135.0-130.0

-125.0-120.0-115.0

-110.0-105.0

-100.0-95.0-90.0-85.0-80.0-75.0-70.0-65.0-60.0

-55.0

-50.0

-45.0-40.0-35.0-30.0-25.0-20.0

-15.0

-10.0-5.0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0-45.72-44.20-42.67-41.15-39.62-38.10

-36.58-35.05

-33.53-32.00-30.48-28.96-27.43-25.91-24.38-22.86-21.34-19.81-18.29-16.76

-15.24-13.72-12.19

-10.67-9.14-7.62-6.10

-4.57-3.05-1.52.00 1.52 3.05 4.57 6.10 7.62 9.14 10.67 12.19 13.72 15.24 6.04 6.45 6.91 7.42 7.98 8.60 9.30 10.09 10.98 11.98 13.12 14.42 15.92 17.65 19.64 21.97 24.69 27.87 31.60 35.97 41.06 46.92 53.52 60.72 68.20 75.43 81.84 86.91 90.39 92.35 92.99 92.44 90.57 87.16 82.16 75.81 68.61 61.16 53.97 47.37 41.51.013.014

.016.017.019.020.022.024

.027.029.032.035.039.044.049.054.061

.069.078.089.102.118.136

.158

.184.213.246.279.310.333.341.333.311

.280.247.214.185.160.138

.120

.105 5.44 5.77 6.12 6.51 6.92 7.38 7.86 8.39 8.97 9.58 10.23 10.92 11.64 12.37 13.07 13.70 14.19 14.40 14.16 13.22 11.31 8.46 7.30 13.62 25.63 40.89 57.29 72.34 83.85 90.75 92.99 90.74 83.83 72.31 57.24 40.82 25.56 13.60 7.46 8.73 11.59 2.63 2.90 3.21 3.56 3.97 4.43 4.97 5.60 6.34 7.20 8.22 9.43 10.88 12.61 14.70 17.21 20.26 23.94 28.36 33.61 39.70 46.48 53.52 59.95 64.43 65.40 61.81 53.94 43.89 35.18 31.74 35.48 44.35 54.46 62.33 65.92 64.92 60.43 53.97 46.91 40.10 6.04 6.45 6.91 7.42 7.98 8.60 9.31 10.09 10.98 11.98 13.13 14.43 15.93 17.66 19.67 22.00 24.73 27.94 31.70 36.12 41.28 47.25 54.02 61.48 69.34 77.13 84.28 90.24 94.65 97.33 98.26 97.43 94.84 90.52 84.63 77.53 69.78 61.94 54.49 47.71 41.74 55.0 16.76 36.41.092 13.50 33.98 36.57 60.0 18.29 32.03.081 14.44 28.71 32.14 65.0 19.81 28.29.072 14.68 24.26 28.36 70.021.3425.09

.064 14.47 20.56 25.14 75.022.8622.36

.05713.9817.50 22.40 80.024.3820.02

.052 13.35 14.96 20.05 85.0 25.91 18.01.047 12.64 12.86 18.03 90.0 27.43 16.27.043 11.91 11.11 16.28 95.0 28.96 14.76.039 11.19 9.65 14.77 100.0 30.48 13.45.036 10.49 8.42 13.45 105.0 32.00 12.29.033 9.83 7.39 12.30 110.0 33.53 11.28.030 9.22 6.51 11.28 115.0 35.05 10.38.028 8.64 5.77 10.39 120.0 36.58 9.59.026 8.10 5.13 9.59 125.0 38.10 8.88.024 7.61 4.58 8.88 130.0 39.62 8.24.023 7.15 4.10 8.25 135.0 41.15 7.67.021 6.73 3.69 7.68 140.0 42.67 7.16.020 6.34 3.33 7.16 145.0 44.20 6.70.019 5.98 3.02 6.70 150.0 45.72 6.28.018 5.65 2.74 6.28 75 50 25 o-25-50 1 00I 95'lo!'" I 1 V........1 90'....'-'""'"."1T1/"\'\I aD 1 II--j 751 I 1\J 7o.l r I K., aJ I I I'-i\---j aD'I'-\I 1 55-]//\7"'-\,50-f/1/I':_/':\\.1 45.i//\-,<'I\40+V/AI-\'.\35.i.//

"',..l/'" l;\!...., To.,t.,/;1'30-3--rt.,\\..---j 25..L///1 l't..........'V ,11'"" 20 L//I/.'J II d."'\:, 1-...."x-75 ,I"".I\11"\I"..,'\-'1.&E"U<D i.L (J'.p<D c 0)roOffset (ft)EMF-230kv H-Frame (Martin)629A No Sun NESC Light.doc 3 3 iii i j iII j I I Electric FIeld vs.OffseU atlStation 1S(50 (ft 75\'\.50"""\

25 o-25;7///;(,./',(, I-50 21 I

[ij IlyF=I I"'0 q,l u::: u'C+-'U q,l W".-..E-->.::s:."-'Offset (ft)EMF-230kv H-Frame (Martin)629A No Sun NESC Light.doc 4 Section II 500kv Transmission Line Solrthern Company Services, Project: 1500a1-1_80_20" 7.30, 9:56:22 PM Thursday, June 09, 2005 case displayed:

Undeformed Geometry-L.',4-1 L 2.2.4-1 500 Ii-V R I\d.BI\-::z.A....

3-.s lAb EMF Summary-EPRI ACDCLINE 7/1212005 Type Construction:

500 kv Horizontal Rigid Base-(NESC Light Zone-No Sun)Distance From Shieldwire to Conductor Attachment (ft)Conductor Temperature (Deg120167 212 F)Ampacity (Amps)Ab86 ,;Power (mva)1429 2590 3783 Audible Noise (db(A>>@Edge of RIW L50 Fair Condition L5 Rain L50 Rain Radio Noise@500kHz (db)@EdgeofRIW Avg Fair Weather Avg Foul Condition Weather Heav Rain Wet Conductor Electric Field Edge of RIW (kv/m)Maximum (kv/m)Distance of Maximum from Center Line (ft)Overage*..Voltage SSub-c.ond Height to Str H-Dist from Centerline pacing (in)Attachm ent 1--7--;:--r::-::-;-;;-r;::.,..-;-:-I Ambient Temp (deg F)Wind Speed (ftIsec)Wind Direction Solar Gain Size (ft)f---.....,...:-=-=::-:t-----..,.----:::,=----1 Magnetic Field Edge of RIW (mg)Maximum (mg)Distance of Maximum from Center Line (ft)224.46 752.47 o Results of AC/DCLINE program CORONA (EPRI/HVTRC 7-93)for: SURFACE GRADIENTS at AVERAGE LINE HEIGHT CORONA LOSS AUDIBLE NOISE Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/11/2005 Time: 13:47 CASE1 500kv RB Horz-525kv@120Deg-45' gnd cl-1650A-No Sun-LT**************************************************************************

  • BUNDLE INFORMATION
                                                                                                                                                      • III VOLTAGE I CURRENT I#I BUNDLE COORDINATES I IBNDLlcIRCIVOLTAGEIANGLEI LOAD I ANGLE 1 OFIXY1 SAG I PH I#I#I (kV)I (DEG)I (A)1 (DEG)I COND 1 (feet)I (feet)I (feet)11**************************************************************************31 525.01 0.1 1650.1 0.1 3-28.51 88.01 43.01 A41 525.01 240.1 1650.1 240.1 3.01 88.01 43.01 B51 525.01 120.1 1650.1 120.1 3 28.51 88.01 43.01 C11.01 O.I o.I O.I1-22.51 116.31 26.0 I GND12I11.010.10.I0.I1I 22.5 I 116.3 I 26.0 I GND 1**************************************************************************
  • MINIMUM GROUND CLEARANCE 45.00 feet**POWER SYSTEM FREQUENCY 60.Hz**SOIL RESISTIVITY 100.ohm meter***************************************************************************
  • SUBCONDUCTOR INFORMATION

-REGULAR BUNDLES******************************************************************************

IBNDL I CONDUCTOR I DIAMETER I SPACING I DC RESIST I AC RESIST I AC REACT I 1#1 NAME 1 (inch)I (inch)1 (ohm/mile)

I (ohm/mile) 1 (ohm/mile)

I*****************************************************************************

3 IBLUEJAY 1.260 18.000.0830.0860.3860 I 4 IBLUEJAY 1.260 18.000.0830.0860.3860 II 5 IBLUEJAY 1.260 18.000.0830.0860.3860 1 13/8HS.360.0006.51006.7500 1.500012 I 3/8HS I.3601.000I6.510016.7500 I 1.5000 I*****************************************************************************

o************************************

      • MAXIMUM SURFACE GRADIENT (kV/cm)***************************************

BNDL#Type ACrms PEAK(+)PEAK(-)-----------------------------------3 AC 16.45 23.26-23.26 4 AC 18.07 25.55-25.55 5 AC 16.45 23.26-23.26 1 Ground Wire 6.66 9.42-9.42 2 Ground Wire 6.66 9.42-9.42 0***************************

      • CORONA LOSS (kW/MILE)***

AC LOSS AVERAGE FAIR.0 MAXIMUM FAIR.0 AVERAGE RAIN(*)85.5 MAXIMUM RAIN(#)173.6 AVERAGE YEAR(**)4.3 MAXIMUM (##)38.2 o (*)Rain intensity.03 in/hour (#)Heavy rain (.5 to 1 in/hour)which may occur in a short section of line.(**)Accounts for the mix of fair and foul weather.(##)Maximum loss for a long line coincidental with maximum load.*********************************

    • AUDIBLE NOISE GENERATED ACOUSTIC POWER (dB above lW/m)**

BNDL#Type Summer Fair L5 RAIN L50 RAIN o 3 AC 4 AC 5 AC 1 Ground Wire 2 Ground Wire-68.65-62.82-68.65************-52.28

-48.66-52.28************-56.85-51.79-56.85********************************************************

AUDIBLE NOISE***

    • Microphone is Altitude 5.00 feet above ground 1000.0 feet**

<----------

HVTRC CALCULATION METHOD---------->

LATERAL L50 L5 L50 DISTANCE FAIRRAINRAIN Leq (24)Ldn (feet)(meters)(dB (A))(dB (A))(dB (A))(dB(A))(dB(A))--------------------------------------------------------150.0-45.72 35.5 50.6 46.8 45.5 52.8-145.0-44.20 35.7 50.7 47.0 45.6 52.9-140.0-42.67 35.8 50.9 47.2 45.8 53.1-135.0-41.15 36.0 51.1 47.3 46.0 53.3-130.0-39.62 36.2 51.2 47.5 46.1 53.4-125.0-38.10 36.4 51.4 47.7 46.3 53.6-120.0-36.58 36.5 51.6 47.8 46.5 53.8-115.0-35.05 36.7 51.8 48.0 46.7 54.0-110.0-33.53 36.9 52.0 48.2 46.8 54.1-105.0-32.00 37.1 52.2 48.4 47.0 54.3-100.0-30.48 37.3 52.448.647.2 54.5-95.0-28.96 37.5 52.6 48.8 47.4 54.7-90.0-27.43 37.7 52.8 49.0 47.6 54.9-85.0-25.91 37.9 53.0 49.2 47.8 55.1-80.0-24.38 38.1 53.2 49.4 48.0 55.4-75.0-22.86 38.3 53.4 49.6 48.3 55.6-70.0-21.34 38.5 53.6 49.8 48.5 55.8-65.0-19.81 38.7 53.8 50.1 48.7 56.0-60.0-18.29 38.9 54.0 50.3 48.9 56.2

-55.0-16.76 39.2 54.2 50.5 49.1 56.4-50.0-15.24 39.4 54.4 50.7 49.3 56.6-45.0-13.72 39.6 54.6 50.9 49.5 56.8-40.0-12.19 39.8 54.8 51.1 49.7 57.0-35.0-10.67 39.9 55.0 51.2 49.8 57.1-30.0-9.14 40.1 55.1 51.4 50.0 57.3-25.0-7.62 40.2 55.3 51.550.157.4-20.0-6.10 40.4 55.4 51.7 50.2 57.5-15.0-4.57 40.555.551.8 50.3 57.6-10.0-3.05 40.555.551.850.4 57.7-5.0-1.52 40.6 55.6 51.9 50.4 57.7.0.00 40.655.651.950.4 57.7 5.0 1.52 40.655.651.950.457.7 10.0 3.05 40.555.551.850.4 57.7 15.0 4.57 40.5 55.5 51.8 50.3 57.6 20.0 6.10 40.4 55.4 51.7 50.2 57.5 25.0 7.62 40.2 55.3 51.5 50.1 57.4 30.0 9.14 40.1 55.1 51.4 50.0 57.3 35.0 10.67 39.9 55.0 51.2 49.8 57.1 40.0 12.19 39.8 54.8 51.1 49.7 57.0 45.0 13.72 39.6 54.6 50.9 49.5 56.8 50.0 15.24 39.4 54.4 50.7 49.3 56.6 55.0 16.76 39.2 54.2 50.5 49.1 56.4 60.0 18.29 38.9 54.0 50.3 48.9 56.2 65.0 19.81 38.7 53.8 50.1 48.7 56.0 70.0 21.34 38.5 53.6 49.8 48.5 55.8 75.0 22.86 38.3 53.4 49.6 48.3 55.6 80.0 24.38 38.1 53.2 49.4 48.0 55.4 85.0 25.91 37.9 53.0 49.2 47.8 55.1 90.0 27.43 37.7 52.8 49.0 47.6 54.9 95.0 28.96 37.5 52.6 48.8 47.4 54.7 100.0 30.48 37.3 52.4 48.6 47.2 54.5 105.0 32.00 37.1 52.2 48.4 47.0 54.3 110.0 33.53 36.9 52.0 48.2 46.8 54.1 115.0 35.05 36.7 51.848.046.7 54.0 120.0 36.58 36.5 51.647.846.5 53.8 125.0 38.10 36.4 51.4 47.7 46.3 53.6 130.0 39.62 36.2 51.2 47.5 46.1 53.4 135.0 41.15 36.0 51.1 47.3 46.0 53.3 140.0 42.67 35.8 50.9 47.2 45.8 53.1 145.0 44.20 35.7 50.7 47.0 45.6 52.9 150.0 45.72 35.5 50.646.845.5 52.8 0*******************************

      • AUDIBLE NOISE**(other methods)****Altitude 1000.0 feet**********************************

<------BPA METHOD-------><-CRIEPI-->EdF ENEL IREQ LATERAL FAIR L5 L50 AVERAGE L5 L5 L5 L5 DISTANCE WEATHER RAIN RAIN Ldn FAIRRAINRAINRAINRAIN (feet)(meters)dB(A)dB (A)dB (A)dB (A)dB (A)dB (A)dB (A),dB (A)dB (A)-----------------------------------------------------------------------150.0-45.72 22.2 50.7 47.2.0.0.0 53.453.150.8-145.0-44.20 22.4 50.9 47.4.0.0.0 53.5 53.3 50.9-140.0-42.67 22.5 51.0 47.5.0.0.0 53.6 53.4 51.1-135.0-41.15 22.7 51.2 47.7.0.0.053.853.551.2

-130.0-39.62 22.9 51.4 47.9.0.0.0 53.953.751.4-125.0-38.10 23.0 51.5 48.0.0.0.0 54.153.851.6-120.0-36.58 23.2 51.7 48.2.0.0.0 54.2 54.0 51.7-115.0-35.05 23.4 51.9 48.4.0.0.0 54.454.151.9

-110.0-105.0-100.0-95.0-90.0

-85.0-80.0

-75.0-70.0-65.0-60.0-55.0-50.0-45.0-40.0-35.0-30.0

-25.0

-20.0-15.0-10.0-5.0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0-33.53-32.00-30.48-28.96-27.43-25.91-24.38-22.86-21.34-19.81-18.29

-16.76-15.24-13.72-12.19-10.67-9.14-7.62-6.10-4.57-3.05-1.52.00 1.52 3.05 4.57 6.10 7.62 9.14 10.67 12.19 13.72 15.24 16.76 18.29 19.81 21.34 22.86 24.38 25.91 27.43 28.96 30.48 32.00 33.53 35.05 36.58 38.10 39.62 41.15 42.67 44.20 45.72 23.6 23.7 23.9 24.1 24.3 24.5 24.7 25.0 25.2 25.4 25.6 25.8 26.0 26.2 26.4 26.6 26.8 26.9 27.0 27.1 27.2 27.3 27.3 27.3 27.2 27.1 27.0 26.9 26.8 26.6 26.4 26.2 26.0 25.8 25.6 25.4 25.2 25.0 24.7 24.5 24.3 24.1 23.9 23.7 23.6 23.4 23.2 23.0 22.9 22.7 22.5 22.4 22.2 52.1 52.2 52.4 52.6 52.8 53.0 53.2 53.5 53.7 53.9 54.1 54.3 54.5 54.7 54.9 55.1 55.3 55.4 55.5 55.6 55.7 55.8 55.8 55.8 55.7 55.6 55.5 55.4 55.3 55.1 54.9 54.7 54.5 54.3 54.1 53.9 53.7 53.5 53.2 53.0 52.8 52.6 52.4 52.2 52.1 51.9 51.7 51.5 51.4 51.2 51.0 50.9 50.7 48.6 48.7 48.9 49.1 49.3 49.5 49.7 50.0 50.2 50.4 50.6 50.8 51.0 51.2 51.4 51.6 51.8 51.9 52.0 52.1 52.2 52.3 52.3 52.3 52.2 52.1 52.0 51.9 51.8 51.6 51.4 51.2 51.0 50.8 50.6 50.4 50.2 50.0 49.7 49.5 49.3 49.1 48.9 48.7 48.6 48.4 48.2 48.0 47.9 47.7 47.5 47.4 47.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0

.0

.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.0.0

.0.0.0.0

.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0.0.0

.0.0.0.0.0

.0.0

.0

.0

.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.0

.0.0

.0

.0

.0.0

.0.0.0.0.0.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.0.0.0

.0

.0.0.0

.0 54.5 54.7 54.9 55.0 55.2 55.4 55.6 55.8 56.0 56.2 56.3 56.5 56.7 56.9 57.0 57.2 57.3 57.5 57.6 57.6 57.7 57.7 57.7 57.7 57.7 57.6 57.6 57.5 57.3 57.2 57.0 56.9 56.7 56.5 56.3 56.2 56.0 55.8 55.6 55.4 55.2 55.0 54.9 54.7 54.5 54.4 54.2 54.1 53.9 53.8 53.6 53.5 53.4 54.3 54.5 54.6 54.8 55.0 55.2 55.3 55.5 55.7 55.9 56.1 56.3 56.5 56.6 56.8 57.0 57.1 57.2 57.3 57.4 57.5 57.5 57.5 57.5 57.5 57.4 57.3 57.2 57.1 57.0 56.8 56.6 56.5 56.3 56.1 55.9 55.7 55.5 55.3 55.2 55.0 54.8 54.6 54.5 54.3 54.1 54.0 53.8 53.7 53.5 53.4 53.3 53.1 52.1 52.3 52.5 52.7 52.9 53.1 53.3 53.5 53.7 53.9 54.1 54.3 54.6 54.8 54.9 55.1 55.3 55.4 55.5 55.6 55.7 55.7 55.7 55.7 55.7 55.6 55.5 55.4 55.3 55.1 54.9 54.8 54.6 54.3 54.1 53.9 53.7 53.5 53.3 53.1 52.9 52.7 52.5 52.3 52.1 51.9 51.7 51.6 51.4 51.2 51.1 50.9 50.8 Audible noise prediction methods do not apply to all line geometries, voltages, or weather conditions.

If a prediction method does not apply, the appropriate output data column will be zeros.o Results of AC/DCLINE program RADIO (EPRI/HVTRC 7-93)for: RADIO NOISE Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASEl Date: 7/11/2005 Time: 13:47 MODE NO.ATTN (dB/mi)ATTN (neper/ft)

1.4029E-01.8790E-06 2.3481E+00.7594E-05 3.3183E+01.6943E-04************************************

      • MAXIMUM SURFACE GRADIENT (kV/cm)***************************************

BNDL#Type ACrms PEAK(+)PEAK(-)-----------------------------------3 AC 16.45 23.26-23.26 4 AC 18.07 25.55-25.55 5 AC 16.45 23.26-23.26 1 Ground Wire 6.66 9.42-9.42 2 Ground Wire 6.66 9.42-9.42 0***************************

      • RADIO NOISE**GENERATION FUNCTION**(dB above 1uA/sqrt(m))

BNDL#Type Average Stable Foul L1 Rain L50 Rain o 3 4 5 AC AC AC 37.93 42.83 37.93****************************

      • RADIO NOISE PROFILES**at 500.00 kHz****ANSI, loop antenna**ALTITUDE 1000.0 ft*42.94 46.11 42.94 35.21 39.80 35.21****************************

Lateral Average Stable Foul Heavy Rain Wet Conductor Distance Weather Noise (1,2)Noise (3)Noise (3)(feet)(meters)(dB)(dB)(dB)---------------------------------

-150.0-45.72 61.8 66.1 58.9-145.0-44.20 62.6 66.9 59.7-140.0-42.67 63.4 67.7 60.5-135.0-41.15 64.2 68.6 61.4-130.0-39.62 65.1 69.4 62.3-125.0-38.10 66.0 70.3 63.2-120.0-36.58 66.9 71.2 64.1-115.0-35.05 67.9 72.2 65.1-110.0-33.53 68.9 73.2 66.0-105.0-32.00 69.9 74.2 67.1-100.0-30.48 71.0 75.2 68.1-95.0-28.96 72.0 76.3 69.2-90.0-27.43 73.1 77.4 70.3-85.0-25.91 74.2 78.5 71.4-80.0-24.38 75.3 79.6 72.5-75.0-22.86 76.4 80.7 73.6-70.0-21.34 77.5 81.7 74.6

-65.0-19.81 78.5 82.7 75.6-60.0-18.29 79.3 83.6 76.5-55.0-16.76 80.0 84.3 77.2-50.0-15.24 80.5 84.8 77.7-45.0-13.72 80.7 85.1 77.9-40.0-12.19 80.5 85.0 77.6-35.0-10.67 79.8 84.5 77.0-30.0-9.14 79.0 83.8 76.2-25.0-7.62 79.1 83.7 76.3-20.0-6.10 80.7 84.8 77.8-15.0-4.57 82.8 86.6 79.9-10.0-3.05 84.7 88.3 81.7-5.0-1.52 85.8 89.3 82.8.0.00 86.2 89.7 83.2 5.0 1.52 85.8 89.3 82.8 10.0 3.05 84.7 88.3 81.7 15.0 4.57 82.8 86.6 79.9 20.0 6.10 80.7 84.8 77.8 25.0 7.62 79.1 83.7 76.3 30.0 9.14 79.0 83.8 76.2 35.0 10.67 79.8 84.5 77.0 40.0 12.19 80.5 85.0 77.6 45.0 13.72 80.7 85.1 77.8 50.0 15.24 80.5 84.8 77.7 55.0 16.76 80.0 84.3 77.2 60.0 18.29 79.3 83.6 76.5 65.0 19.81 78.5 82.7 75.6 70.0 21.34 77.5 81.7 74.6 75.0 22.86 76.4 80.7 73.6 80.0 24.38 75.3 79.6 72.5 85.0 25.91 74.2 78.5 71.4 90.0 27.43 73.1 77.4 70.3 95.0 28.96 72.0 76.3 69.2 100.0 30.48 71.0 75.2 68.1 105.0 32.00 69.9 74.2 67.1 110.0 33.53 68.9 73.2 66.0 115.0 35.05 67.9 72.2 65.1 120.0 36.58 66.9 71.2 64.1 125.0 38.10 66.0 70.3 63.2 130.0 39.62 65.1 69.4 62.3 135.0 41.15 64.2 68.6 61.4 140.0 42.67 63.4 67.7 60.5 145.0 44.20 62.6 66.9 59.7 150.0 45.72 61.8 66.1 58.9 (1)The"Average Stable Foul Weather" noise is calculated using an empirical expression for the radio noise excitation function that was derived (see REF.[A])to best fit the long term radio noise measurements of existing lines (in the 345 kV to 765 kV range).This generation function is used also in the program RNOISE, which is applicable to AC transmission lines.If AC lines are not present, the"Average Stable Foul Weather" column contains zeros.(2)The"Average Fair Weather" radio noise values can be obtained by subtracting 21.6 dB from the"Average Stable Foul Weather" radio noise data.(3)The"Heavy Rain" and the"Wet Conductor" radio noise levels, are defined in the EPRI's Transmission Line Reference Book-345 kVand Above.The equations for the excitation functions for AC conductors are derived from the Reference Book and are applicable for large ranges of surface gradients (from 10 to 25 kV/cm), subconductor diameters (2 to 8 em)and number of subconductors (1 to 12).The equations for the excitation functions for DC and HYBRID line conductors are derived from the EPRI RP 2472-6.Heavy rain was defined as rain with intensity of the order of8-12 mm/hr.In the Northeastern climate, the"Heavy Rain" noise is exceeded only 1%of the time during periods of rain."Wet Conductor" noise corresponds to the condition of the conductor saturated with water drops and with little noise caused by the impingement of rain droplets.Experimental data from which the equations for the"Wet Conductor" noise were derived, indicate that the"Wet Conductor" noise is exceeded 50%of the time during natural rain periods."Wet Conductor" noise also corresponds to the maximum noise that can be produced during fog.

REFERENCES:

[A]R.G.Olsen, S.D.Schennum and V.L.Chartier,"Comparison of Several Methods for Calculating Power Line Electromagnetic Interference Levels and Calibration with Long Term Data", EPRI report, Project RP-2025, 1991.===========================================================================

o Results of AC/DCLINE program EFION (EPRI/HVTRC 7-93)for: SURFACE GRADIENTS at ACTUAL LINE HEIGHT ELECTRIC FIELD&IONS WITHOUT SHIELDING OBJECTS SENSATION LEVELS Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASE1 Date: 7/11/2005 Time: 13:47************************************

      • MAXIMUM SURFACE GRADIENT (kV/cm)***************************************

BNDL#Type ACrms PEAK(+)PEAK(-)-----------------------------------3 AC 16.59 23.46-23.46 4 AC 18.08 25.56-25.56 5 AC 16.59 23.46-23.46 1 Ground Wire 5.28 7.46-7.46 2 Ground Wire 5.28 7.46-7.46 0***************************************

  • AC ELECTRIC FIELD PROFILE at 3.28 feet above ground**
        • longitudinal distance: 650.00 feet******************************************

LATERAL MAXIMUM MINOR/MAJOR SPACE DISTANCE FIELD ELLIPSE AXES VERTICAL HORIZONTAL POTENTIAL (feet)(meters)(kV/m)(ratio)(kV/m)(kV/m)(kV)-------------------------------------------------------------150.0-45.72.517.000.516.031.517-145.0-44.20.568.000.567.036.568-140.0-42.67.626.000.624.040.625-135.0-41.15

.691.000.690.046.691-130.0-39.62.766.000.764.052.765-125.0-38.10.850.000.848.059.850-120.0-36.58.948.000.945.068.947-115.0-35.05 1.059.000 1.056.078 1.058-110.0-33.53 1.187.000 1.184.090 1.186

-105.0-32.00 1.335.001 1.331.104 1.334-100.0-30.48 1.505.000 1.501.120 1.504-95.0-28.96 1.702.000 1.697.138 1.700-90.0-27.43 1.929.000 1.923.159 1.927-85.0-25.91 2.190.000 2.182.183 2.187-80.0-24.38 2.489.000 2.480.208 2.485-75.0-22.86 2.828.001 2.818.235 2.823-70.0-21.34 3.207.002 3.197.261 3.201-65.0-19.81 3.623.004 3.612.282 3.615-60.0-18.29 4.064.006 4.054.293 4.053-55.0-16.76 4.510.009 4.501.288 4.496-50.0-15.24 4.927.013 4.921.259 4.908-45.0-13.72 5.268.019 5.265.209 5.244-40.0-12.19 5.477.028 5.476.172 5.446-35.0-10.67 5.498.041 5.497.234 5.461-30.0-9.14 5.297.060 5.293.380 5.254-25.0-7.62 4.880.087 4.868.543 4.831-20.0-6.10 4.303.125 4.283.679 4.252-15.0-4.57 3.675.176 3.652.764 3.624-10.0-3.05 3.124.234 3.108.794 3.077-5.0-1.52 2.762.280 2.757.791 2.718.0.00 2.639.844 2.639.784 2.595 5.0 1.52 2.762.280 2.757.791 2.718 10.0 3.05 3.124.234 3.108.794 3.077 15.0 4.57 3.675.176 3.652.764 3.624 20.0 6.10 4.303.125 4.283.679 4.252 25.0 7.62 4.880.087 4.868.543 4.831 30.0 9.14 5.297.060 5.293.380 5.254 35.0 10.67 5.498.041 5.497.234 5.461 40.0 12.19 5.477.028 5.476.172 5.446 45.0 13.72 5.268.019 5.265.209 5.244 50.0 15.24 4.927.013 4.921.259 4.908 55.0 16.76 4.510.009 4.501.288 4.496 60.0 18.29 4.064.006 4.054.293 4.053 65.0 19.81 3.623.004 3.612.282 3.615 70.0 21.34 3.207.002 3.197.261 3.201 75.0 22.86 2.828.001 2.818.235 2.823 80.0 24.38 2.489.000 2.480.208 2.485 85.0 25.91 2.190.000 2.182.183 2.187 90.0 27.43 1.929.000 1.923.159 1.927 95.0 28.96 1.702.000 1.697.138 1.700 100.0 30.48 1.505.000 1.501.120 1.504 105.0 32.00 1.335.001 1.331.104 1.334 110.0 33.53 1.187.000 1.184.090 1.186 115.0 35.05 1.059.000 1.056.078 1.058 120.0 36.58.948.000.945.068.947 125.0 38.10.850.000.848.059.850 130.0 39.62.766.000.764.052.765 135.0 41.15.691.000.690.046.691 140.0 42.67.626.000.624.040.625 145.0 44.20.568.000.567.036.568 150.0 45.72.517.000.516.031.517 0*********************************************

      • SENSATION LEVEL PROFILES**(based on 95%summer fair weather values)************************************************

LATERAL DISTANCE (feet)(meters)HAIR UMBRELLA ROD-----------------------150.0-45.72.0.1.1 o-145.0-140.0-135.0-130.0-125.0-120.0-115.0-110.0-105.0-100.0-95.0

-90.0-85.0

-80.0

-75.0

-70.0

-65.0-60.0-55.0-50.0-45.0-40.0

-35.0

-30.0

-25.0

-20.0

-15.0

-10.0-5.0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 140.0 145.0 150.0-44.20-42.67

-41.15-39.62-38.10-36.58

-35.05-33.53-32.00-30.48-28.96-27.43-25.91-24.38

-22.86-21.34-19.81-18.29-16.76-15.24-13.72-12.19-10.67-9.14-7.62-6.10-4.57-3.05-1.52.00 1.52 3.05 4.57 6.10 7.62 9.14 10.67 12.19 13.72 15.24 16.76 18.29 19.81 21.34 22.86 24.38 25.91 27.43 28.96 30.48 32.00 33.53 35.05 36.58 38.10 39.62 41.15 42.67 44.20 45.72.0.0.0.0.0.0.0.0.1.1.1.1.1.1.1.1.2.2

.2.2.2.2.2.2.2.2.2.1.1.1

.1.1.2.2.2.2.2.2.2

.2

.2.2.2.1.1

.1.1.1

.1.1.1.0.0.0.0.0

.0.0.0.0.1.1.1.1.1.2.2.2.2.3.4.6.8 1.0 1.3 1.6 2.0 2.3 2.7 3.0 3.2 3.4 3.4 3.3 2.9 2.5 2.0 1.6 1.2 1.1 1.2 1.6 2.0 2.5 2.9 3.3 3.4 3.4 3.2 3.0 2.7 2.3 2.0 1.6 1.3 1.0.8.6.4.3.2

.2.2

.2.1.1.1.1.1.1.1.1.1.1.1.1.1.2.2.2.3.3.4.5.6.8.9 1.2 1.6 1.9 2.3 2.4 2.5 2.3 1.9 1.4 1.0.7.6.6.6.7 1.0 1.4 1.9 2.3 2.5 2.4 2.3 1.9 1.6 1.2.9.8.6.5.4.3.3

.2.2.2.1.1.1.1.1.1.1.1 Results of AC/DCLINE program COUPLE (EPRI/HVTRC 7-93)for:-------------------------------------------------------------

COUPLING to OBJECTS&SHIELDING by OBJECTS Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASEl Date: 7/11/2005 Time: 13:47 o DATE: 7/11/2005 TIME: 13:47******************************************************

      • ELECTRICAL COUPLING TO OBJECTS**INCLUDING EFFECTS OF 1 SHIELDING OBJECTS****OBJECT TYPE 2**LONG BOX (LONG VEHICLE)*********************************************************

EQUIVALENT COUPLED OBJECT AREA=3773.93 ft**2 CALCULATED CAPACITANCE TO GROUND 100000.pF CALCULATED RESISTANCE TO GROUND.02 kohms (1%RESISTANCE VALUE MEASURED FOR VEHICLES WITH THE SAME CAPACITANCE, IN DIFFERENT WEATHER CONDITIONS AND ON DIFFERENT PAVEMENTS-NORTHEAST USA)LATERAL AND LONGITUDINAL DISTANCE TO OBJECT CENTER=35.00 650.00 feet AC SHORT CIRCUIT CURRENT=3.82 rnA THEORETICAL MAXIMUM AC VOLTAGE TO GROUND 1%AC VOLTAGE TO GROUND 50%AC VOLTAGE TO GROUND o 101.V 57.V 8.V DATE: 7/11/2005 TIME: 13:47******************************************************

I***ELECTRICAL COUPLING TO OBJECTS*\*INCLUDING EFFECTS OF 1 SHIELDING OBJECTS****OBJECT TYPE 2**LONG BOX (LONG VEHICLE)*********************************************************

EQUIVALENT COUPLED OBJECT AREA=3773.93 ft**2 CALCULATED CAPACITANCE TO GROUND 100000.pF CALCULATED RESISTANCE TO GROUND.02 kohms (1%RESISTANCE VALUE MEASURED FOR VEHICLES WITH THE SAME CAPACITANCE, IN DIFFERENT WEATHER CONDITIONS AND ON DIFFERENT PAVEMENTS-NORTHEAST USA)LATERAL AND LONGITUDINAL DISTANCE TO OBJECT CENTER=35.00 650.00 feet AC SHORT CIRCUIT CURRENT=6.72 rnA THEORETICAL MAXIMUM AC VOLTAGE TO GROUND 1%AC VOLTAGE TO GROUND 50%AC VOLTAGE TO GROUND o DATE: 7/11/2005 TIME: 13:47 178.V 100.V 15.V******************************************

        • LATERAL PROFILE IN PRESENCE OF SHIELDING OBJECTS*****longitudinal distance: 650.00 feet*

LATERAL AC FIELD DISTANCE (feet)(meters)(kV/m)------------------------

-100.0-30.48 1.5001-95.0-28.96 1.6958-90.0-27.43 1.9215-85.0-25.91 2.1812-80.0-24.38 2.4787-75.0-22.86 2.8167-70.0-21.34 3.1955-65.0-19.81 3.611 7-60.0-18.29 4.0550-55.0-16.76 4.5049-50.0-15.24 4.9282-45.0-13.72 5.2770-40.0-12.19 5.4930-35.0-10.67 5.5181-30.0-9.14 5.3151-25.0-7.62 4.8890-20.0-6.10 4.3023-15.0-4.57 3.6696-10.0-3.05 3.1274-5.0-1.52 2.7799.0.00 2.6632 5.0 1.52 2.7767 10.0 3.05 3.1216 15.0 4.57 3.6625 20.0 6.10 4.2946 25.0 7.62 4.8812 30.0 9.14 5.3073 35.0 10.67 5.5104 40.0 12.19 5.4852 45.0 13.72 5.2694 50.0 15.24 4.9205 55.0 16.76 4.4973 60.0 18.29 4.0474 65.0 19.81 3.6042 70.0 21.34 3.1881 75.0 22.86 2.8093 80.0 24.38 2.4715 85.0 25.91 2.1741 90.0 27.43 1.9144 95.0 28.96 1.6889 100.0 30.48 1.4933 D Results of AC/DCLINE program MAGFLD (EPRI/HVTRC 7-93)for: MAGNETIC FIELD CALCULATIONS Configuration file name: C:\TLW30\ACDCLINE\DATA\ACCASEI Date: 7/11/2005 Time: 13:47 AC CURRENTS IN EACH BUNDLE:-----AC CURRENTS (Amperes)BNDL BUNDLE POSITION

  1. REAL IMAGINARY TOTAL X-COORD Y-COORD---------------------------------------------3 1650.00.00 1650.00-28.50 88.00 4-825.00-1428.94 1650.00.00 88.00 5-825.00 1428.94 1650.00 28.50 88.00 1-10.25-5.80 11.77-22.50 116.30 2 6.7510.4912.47 22.50 116.30 0***************************************
      • MAGNETIC FIELD
    • at 3.28 feet above ground****longitudinal distance: 650.00 feet******************************************

<-----------

AC MAGNETIC FIELD------------>

LATERAL MAJOR MINOR/VERTICAL HORIZONTAL RMS DISTANCE AXIS MAJOR COMP COMP RESULTANT (feet)(meters)(mG)(RATIO)(mG)(mG)(mG)---------------------------------------------------150.0-45.72 22.53.024 18.99 12.15 22.54-145.0-44.20 24.04.026 20.00 13.36 24.05-140.0-42.67 25.71.028 21.07 14.74 25.72-135.0-41.15 27.54.030 22.20 16.31 27.55-130.0-39.62 29.57.033 23.40 18.10 29.58-125.0-38.10 31.82.035 24.65 20.15 31.84-120.0-36.58 34.33.038 25.96 22.50 34.35-115.0-35.05 37.12.042 27.29 25.21 37.15-110.0-33.53 40.25.046 28.65 28.34 40.29-105.0-32.00 43.77.050 29.98 31.96 43.82-100.0-30.48 47.72.054 31.24 36.17 47.80-95.0-28.96 52.19.060 32.37 41.06 52.28-90.0-27.43 57.24.066 33.24 46.75 57.36-85.0-25.91 62.96.072 33.72 53.36 63.13-80.0-24.38 69.45.080 33.61 61.02 69.67-75.0-22.86 76.79.088 32.6469.8377.09

-70.0-21.34 85.08.098 30.51 79.86 85.49-65.0-19.81 94.40.110 26.9191.0794.96

-60.0-18.29 104.77.122 21.93 103.25 105.56-55.0-16.76 116.17.137 17.60 115.93 117.26-50.0-15.24 128.44.154 20.97 128.25 129.96-45.0-13.72 141.28.174 35.47 138.94 143.39-40.0-12.19 154.23.196 57.27 146.35 157.16-35.0-10.67 166.68.221 83.61 148.82 170.70-30.0-9.14 177.97.249 112.03 145.18 183.38-25.0-7.62 187.50.278139.79135.43 194.63-20.0-6.10 194.91.309 164.16 121.15 204.03-15.0-4.57 200.14.339 183.20 105.37 211.34-10.0-3.05 203.41.365 196.15 91.69 216.52-5.0-1.52 205.12.383 203.38 82.88 219.62.0.00 205.68.389 205.68 80.00 220.69 5.0 1.52 205.25.383 203.45 83.11 219.77 10.0 3.05 203.65.365 196.27 92.12 216.81 15.0 4.57 200.49.340 183.36 105.94 211.76 20.0 6.10 195.37.310 164.34 121.80 204.56 25.0 7.62 188.04.280 139.98 136.13 195.26 30.0 9.14 178.57.250 112.22 145.91 184.07 35.0 10.67 167.33.223 83.80 149.56 171.44 40.0 12.19 154.91.198 57.49 147.09 157.93 45.0 13.72 141.98.177 35.76 139.67 144.18 50.0 15.24 129.15.158 21.42 128.98 130.74 55.0 16.76 116.88.141 18.15 116.63 118.04 60.0 18.29 105.48.126 22.41 103.93 106.32 65.0 19.81 95.09.114 27.33 91.73 95.71 70.0 21.34 85.76.103 30.90 80.49 86.22 75.0 22.86 77.45.093 33.02 70.43 77.79 80.0 24.38 70.09.085 33.99 61.59 70.35 85.0 25.91 63.59.078 34.10 53.90 63.78 90.0 27.43 57.85.071 33.62 47.26 58.00 95.0 28.96 52.78.066 32.74 41.54 52.90 100.0 30.48 48.30.06131.6236.63 48.39 105.0 32.00 44.33.056 30.36 32.39 44.40 110.0 33.53 40.79.052 29.02 28.75 40.85 115.0 35.05 37.65.04927.6725.60 37.69 120.0 36.58 34.84.046 26.33 22.87 34.87 125.0 38.10 32.32.043 25.02 20.50 32.34 130.0 39.62 30.05.040 23.76 18.43 30.07 135.0 41.15 28.01.038 22.56 16.63 28.03 140.0 42.67 26.16.036 21.42 15.04 26.18 145.0 44.20 24.49.034 20.35 13.65 24.50 150.0 45.72 22.96.032 19.33 12.42 22.98 75 50{.,'.I j.,'....

,/","", I I-I I II f<:*::m.....,., II\I,/1I/\\l__I 1'\\..100 I JII II (l nII, It II/\\1/\!'<!l'\!/\II*I!'I\, I I I I 75',,,i,,, iii , iii iii-75-50-25 0 25 2001 I22"5 I I i I i\"'"*N.....:::;;::au i..........

."..-j i I I.........175 0 E"-'-0 (l)iL 150 u;::;(l)c 0)ro12:: Offset (ft)EMF-500kv Horiz RB (Bluejay)1650A NO Sun NESC Light-PLS.doc 3 75-50 2 i5i, ,., I*,,," I'(/l*I_*,,,,,i" I,,, i I****I iiii.6 1 Electric Field v 5';-., E.......>:x"-""U q)4 iL u'C......U q)W 3 Offset(ft)

EMF-500kv Horiz RB (Bluejay)1650A NO Sun NESC Light-PLS.doc 4 C 74 451-1 500 K.V TRANSMISSION LINE RADIO NOISE PERFORMANCE\C..\I..W.Priest General Electric Company Philadelphia, PelUlsylvania D.R.Williamson Georgia Power Company Atlanta, Georgia 1.2.ANALmCAI PREDICTION COhlPARE OfSTUDY LINE NOISE MEASURE-.MENTS COORDINATEAND OF DEVELOP DETERMINE REPORT.WEATHER I-STATISTiCAl RESU!JS WEATHER MODEL WITH AND HOURLY'DATA m£NT RECEPTION QUALITY PHASE I PHASE]I PHASE:m: PHASEW FIELn PRE-CON-POST-CON-POST-Et£R-MEASURE-STRUCTION STRUCTIONGlZATION I-t MENTS SIGNAL SHIELDING LINE AFTER STRENGTHS EFfECT PROFIlES AGING Il OBTAIN SIGNAL COMPARE TO 1 STRENGTHS FROM STATIONS MEASUREMENTS o co Fig.1 500-kV noise study program.Fig.2.500 kV tObJer configuration.

Shown.in Figure 2 is a sketch of the tower configuration.

used for the Atlanta#1 and Norcross 500kV lines of the Georgia Power Co.A trili.ngUlar

'bundle of three 1.251J" diameter (bluejay)conductors are considered.

The radio noise profiles are computed using the techniques described in Reference 5.The base case profiles are based on thetions listed in Table I.This program was divided into three basic areas: analytical work, the effect of weather, and the field measurements.

Each of these topics is discussed in separate sections followed by the.coordination of results.Verify prior calculations of noise levels by comparing them with field meaSUrements using the normal prediction method and using rain cage test results from Project UHV.4.Extend RN calculations to long termtistical predictions bl1$.ed on weather data from Atlanta, Georgia.O.Present signal-to-noise (SiN)ratios for both calculated and measured RN levels.4.Compare signal strength measurements' to Radio Station predictions.

3.ABSTRACT;This paper summarizes the results of a complete analysis as highlighted by the flow chart shown in Figure 1.5.Compute describe statistically theity of Radio Reception near the way.5.INTRODUCTION The prediction of the radionoiseproduced by EHV transmissjon lines has been discussed for many years 1*2.;;S.4.5.The Atlanta#1 and Norcross lines were considered to be excellent candidates for extensive pre and post construction radio noise field measurements.

Twenty areas along these lines were chosen as relatively accessiblement The original study objectives may be listed as follows: The extensive analyses of the radio noise.characteristics of two 500kV lines near Atlanta Georgia'are presented.

Comprehensive analytical

'Work and an extensive series of field measurements at twenty field locations are reported.Field measurements were conducted before, during, and after construction.

Unique me.asurements ofing effects are inclUded.SelEicted night*and*loop antelUla measurements were recorded, also.The results have been compared and interpreted for application in the design of future 500kV lines.CONl-':EmlCE PAPER C451-1.A paper rec<mnended by the IEEE Trans-mission&Distr'ibution Carani.ttee of the IEEE PCMergineet'ing Society for pnlsentation at the IEEE PESmer Meeting&Energy ResoUl:'Ces Conf., Anaheim.Cal** 111-19, 1974.Manuscript submitted February19711;made available for prin't:ing May 16, 1974.t Price: Members$1.50 All Rights Nonmembers

$2.00 Reserved At fol.eeting:

$1.00 by IEEE."

HENRY Pre-Construction Post-Construction Pre-Energization Post-Energization After Aging CHEROKEE FIELD MEASURE*ME;NTS Phase I Phase n Phasem Phase IV Fig.5.Meq.surement

'Locations.

BARTOW i..I..I o 0:: 0:::<2

.".A typical measurement is illustrated by pictures in Figure 6!Uld Figure 7.These pictures were taken froin measurement

.location.number 6 on the Norcross line looking east and west.Over ten thousand rea,dingshave been made during the four measurement phases at the 20 locations.

Several hundred of these measurements have been made under foul weather.PhaseI-Pre-Construction..During September and November radio station sIgnal strengths and background noisements were made.Typical results are shown in Tables n and.HI for the signal strengths and.background nOIse respectively.

Tables n*and 1lI.give the measurements in decibels above 1 microvolt per meter.The measurement locations may be obtained fr.om Figure 5.Table.IV gives the results of some night measurements and Table V gives6.Norcross line-position#6-"looking eaBt*.7.NO'l'(]l'OS8 line-position#6'-Zoo.king UJest.{'.TABLE II.SIGNAL STRENGTH MEASUREMENTS ATLANTA lil NORCROSS NORCROSS.NORCROSS>-LOCATION 10 LOCATION 2 LOCATION 6 LOCATION 9 z u 0 z.....LIJ................f-:::>.......::=-.........>........:=-CY..........>................................................LIJ.............................VI 0:: UJ UJ LIJ UJ UJ UJ l.lJ UJ w UJ UJ UJ LU LLI W u..l1J VIVIVl C/')VI VIVlVlVl*Vl VI<t:$<t<t<t<t<t<t<t<t<t:r::r::c::r::r::r::r::r::r:::I::r::r::r::r::r: Q..Q..Q..Q..Q..0:: Q..Q..Q..Q..a..c.: a..Q..a..0-WDAK 540 51!55 50*57 47**52 56 53 54*48 55 49*WGGA 550 59 63*63 58 58**6364*61 70 71*68 590 87 86 78 88 67 63 59 61 70 78 78 79 99 99 96 100 WTRP 620 58 61 55 62 50 53**49 49 56**51 50*WRNG.680 76 84 87 85 67 74 69 71 81 80 80 69 94 104 97 100 WSB 750 88 95 89 87 767475 72 92 88 89 82 110 111 102 110 WQXE 790 79 80 81 76 68 66 59 67 78 70 73 64 94 93 84 84 WGST 920 787865 70 62 59 55 64 74 767161 90 gO 75 88<Him"-" 970 72)74 65 64 56 63 74 7Z 69 60 80 81 75 80 WGUN 1010 80 80 77 76 70 67 59 58 75 72 71 63 97 97 89 96 WBIE 1080 72 63*73 65 76**123 121*117 83 65*86 WGKA 1190 66 61 63 68 55 49 56 58 66 59 69 60 68 70 59 62 14FOM 1230 60 56*55 60 60**92 95*89 69 67*52 WTSH 1260 84*7873 59 58 53 58 70 70 70 60 69 69 59*WHIE 1320 63 57*53 50***50***51 51*52 WGAA 13407367 71 66 67 68 55 53 60 60 65 50 71 57 63 59 WAOK 1380 80 73 62 70 57 54**74 70 717171 74 58 68 14YZE 1480 76 71 74 69 52 48 51*68 58 67 53 73*69*WYNX 1550 70 64*64 68 69*.66 98 93*92 78 56*70 1600 65 54*55 59 60*60 70 71*66 55 54*53*Note: 1.Measurements in dB above 1 uvolt/meter Quasi Peak 2.Locations from Figure 5 3.Several Measurements Not Made.3 TABLE III NOISE MEASUREMENTS

  • Note: 1.Measurements in dB above.1JiVo1t/meter Quasi Peak 2.Locations from Figure 5 3.?everal Measurements Not Made.".1000"Several.measUl'ements' not made.uFl'om Cinoinati.

Ohio 5 I':lllukHz I--I 1010 kHz-1380kHz"'-.....fo--:---0 5 690kH-f..--V r--I-..-.---0 5 0*100 ZOO 300 400 500 600 700 800 900 7 80 4 4 LONGITUDINAL DISTANCE I£TWEEN TOWERS-FEET Fig.9.Post-aonstruotion signa7..stl'ength pl'ofi.7.e.

TABLE V IGHT'SIGNAL STRENGTHSz u'0 z.....w::>0'ATLANTA NORCROSS NORCROSS w Vl c.::: LOCAT:ON LOCATION LOCATION u..-10" Q WSN 650 88 71*WMAQ 670 80 74***700 79 80 74\4S8 150 93 86 112 WFAA 820 84 78 78 WCBS 880 79 80 79 WKYZ 1100 76 75 69 WWVA 11706564 54**1530 85 77'81 4 ATLANTA Itl NORCROSS NORCROSS NORCROSSLOCATION 10 LOCATION 2 LOCATION 6 lOCATION 9 u ffi.......................fa'...........::-...........::-...........::-..........:>...............................................

..........................

.........,.a: UJ w w w....w w www w w w w wwwVlVl Vl VI Vl VI II.)Vl Vl(/)Vl (/).Vl Vl c:;<:(.:c<:(<:(c:(<:(<:(<:(<:(:E<:(c:(:i§:r:c::c::c::c::r::c::c::r:I::c::c::c::I: Q..0..0..Q..c..0..0...0..0...0..0..Q..0..0..0..Q..170**68 65**68 54**53 57**64 64 500 21 23*53 20 28*51 20 21*50 32"41*54 640 20 22 62*20 29 57*22 24 52*32 34 47*720]9.63 50 19*55 47 20*47*37*44*1140 19 17 60 48 15 25 53*21 29 44*25 32 42*1620 16**44 17***41..19*.*40 31**48 2.200 17 18*33 17 21*37 10 17*35 20 24*39 4000 15**27 12 13*27 15 17*29 19 15*41 830086*1787 29 17 8**25 17 12*38 15000 12 9 20 14 78*i 11 14*16 9 8*31 32000 5 8 9.11 3 8 7 4 7 19 16 3 11 2 16.:-I...............

eo t--JOkHz/.............

II1'-1--e: 70 590kHz/r----.;: "-65-l--1/l!';80kHz fl CD"""" 60 III 1380kHz...ti"-"".......t-....5t-H l--.........1\

r-V 45\n 40 L.---WOWLATERAL DISTANCE FROM CENTER Of RIGHT OF WAY-FEET Fig.8.Post-constl'uotion signal.strength profile.TABLE Til nnp 4NTFNNA MFASUR84ENTS

  1. 1 LOCATION lC LOCATION 2 LOCATION 6 STATION FREOUENC MAX HIH MAX MIN 14AX tuN 590.56 36'59 35 72 34 WTRP 620 41 30 45 34 47 32 I WRNG 680 58 35*60 32 65 38 i WSB 750 67 46 63 33 80 62 WQXI 790 58 36 61 37 72 45 tlGST 920 55 35 61 38 70 48 WIIN 970 55 39 57 42"" 66 44 WGUN 1010 60 40.63 35 74 38 WGKA 1190 45 27 44 37 57 35 WTJH 1260 49 31 57 44 77 53 i WGAA 1340 53 394947 63 39 I1380 49 31**69 36 14l'l1l 45 30**70 46 meaSUl'emen:s no" maae.

o025 10 20 50 100 200 500 1000 2000 DISTANCE FROM CENTER OF RIGHT-OF-WAY fEET 10.Post energization noise and signal profile.NORCROSS LOCATION 6-...",.x PRE-CONSTRUCTION o POST CONSTRUCTION'(NOT EN£RGllEO)

---A ENERGIZED a 00 RAIN_..'\*..'!i.........." a..*..y.a.0" 4 a**It tIC" 0 11 80 o 70 10 200 SIlO 1,000 2/lOO 5.000 10,000.20,000 50,000 FREQUENCY-Hz Pig.11.Line noise measUi'ements.

0."*l ATLANTA 8 1 C--pOSITION 4 FAIR WEATHER f--." 1000 kHz NOiSE 0 1010 kHz SIGNAL I 80 60 E.....eo.;l.!-;40...:e 30-J.....>20\II U>o 10*z'70 T:), I')\..,/the minimum and maximum loop antenna recordings.

Due to the large volume of data taken, only typical data is presented.

The conclusions are based on.all the data, and the data presented is intended to show typical trends.Phasen-Post-Construction Pre-Energization The radio station signal strengths andground noise measurements were repeated for comparison and typical results shown in Tables n and ill, respectively.

These signal strength measurements (Table n)averaged 3.7 db less.This change could be explained by a general shielding effect or a seasonal variation.

Phase Iments were made in the'fall and Phase n in the Spring.Some individual changes were significant, and profiles were.then taken.Typical lateral and longitudinal profiles are shown in Figures 8 and 9, respectively.

These show in more detail the distortion produced by coupling to the line'and reradiation.

The profiles taken at*midspan were generally not symmetrical, however, the major effects tend to be localized within the right-of-way.

Phase ill-Post Energization Again signal strengths were measured and the typical results are shown in Table n.The noise measurements were made in generally fairweather.

However, several/Sets of readings were taken during rain.Noise and signal profiles were taken to estimate actual signal-to-noise ratios.Figure 10 shows a typical result.]?hase IV-After Aging After the conductors have been permitted to age for about a year, measurments were re-made.The signal strengths are recorded in Table nand the noise measurements in nI.COORDINATION OF RESULTS Since extensive data was taken, one of the most difficult tasks is to interpret general results without becoming hopelessly involved with a sea of numbers.It is with this philosphy in mind that the follOWing summaries are presented.

BARTOW/'I/...J...J o 0::: 0:::<l: o Fig.12 Signal strength measurements.

Radio Station Signal Strengths several local.radio stations provided data for their predicted sigbal strengths in the Atlanta area.A typical comparison to the field measurements is shown in Figure 11.Generally, the fieldments were consistent with the predicted signal levels.Table n indicates.

the typical fluctuations for the different field measurement periods.Noise Comparisons Table ill presents noise measurements for all four phases of field measurements through a wide frequency range.An excellent example of the data is available in the history of measurements at location 6 of the Norcross line.Figure 12 shows pre-construction, after energizing, during rain and after aging measurements.

The dramatic effect 5

--'".........1\.1\\

WEATHER f'AIR WEATHER (EXCEEDED 10%_(EXCEEDED 90%OFTIMEI OF TIMEl NORGROSS'"I_FAIR WEATHE lNOISE 5llOkH'MEASUREMENTS

\, i' PREDICTION I o 025 10 20 50 100 200 500 1000 2000 sooO DISTANCE FROM CENTER OF RIGHT-Of-WAY-FEET 10 TO aD K K--&FAIR WEATHER (EXCEEOED 10%fil\lRWEATIIER

\.OFTIM£1-(EXCEEDED 90%OF'TIME'ATLANTA*1POSITION<4'FAJg, WEATHER xl OOkHr NOISE MEASUREMENTS

'\l\

PREDICTION I'I-I eo 10...30_20.....(;10 ,Z*Fig.16.Measurements compared to prediction.

Fig.13.MeaRuzoements CO'ITfpared to predi.ction.

5 10 20 50 100 200 500 1000 2000 5000 OISTANCE FROM CENTER OF RIGHT-OF-WAY-FEET

-I"'-l'\.I* (EXCEEDED 50" OF TlMEl ,.---r\\HORCftOSS...s\

MEASUREMENTS

'" i"FOIn.PREDICTION I o ,0 2.0 Fig.17.MeaRurements compared to prediction.

90 TO 80_60{.!-so!'8 40!5'0 20 50 100 200!lOO 1000 2000 ,5000 DISTANCE FROM CENTER OF RIGHT-OF-WAY

-"" a" ,,\

FAIR WEATHER (EXCEEOED 10%-(EXCEEOE090%,OFTIM£),'OFTIMEI'A'ILAHTA#'

I\t---LOCATION lI'8 alOOO.1Ir NOISE IIEASUIlaIENj

" ,'iAHACrf'CAL PlIEOICTlON o o 2 70 Fig.14.MeaRurements CO'ITfpared to prediction.

Fig.16.MeaRurements compared to prediation.

Seasonal effects have not been included but an additional variation of+/-6db might be expected.Figures13,14, 15 and 16 present profile comparisons for four different measurementtions in fai:t: weather.Ag:r;eement is excellent.

Figures 17 and 18 show two foul weather profiles taken at Norcross location 5.Agreement in this case is good.after aging measurements.

The dramatic effect of rain is clearly noted.An average increase of over 20dB is evident throughout the entire frequency spectrum.Noise Profiles One of the criteria for modern radio noise programs is to predict field measurements.

During the Phase III field program]ali excellent opportunity for measuring noise pi-oliles was provided.In addition, several profiles were taken under foul weather conditions.'

The computed profiles shown earlier in Figure 3 must be modified before direct comparisons can be made.First the weather corrections were added to develop a statistical prediction.

.Then corrections for line voltage and frequency were applied.6 I r---*"I"\'FAIR WEATHER (EXCEEOEO 10'1.-I\."'OF TIMEl FAIR WEATHER ,\"-ATLANTA..I LOCATION..T ,\-

MEASllREMENTS vr;CAL";'EDlCT,'ON

\o o 5 10 20 50 100 200 500 1000 2000 5000 DISTANCE FROM CENTER OF R'GHT-OF*WAY-FEET eo 70 i.0 0!-j 50..<40;9 oJ...30...20..10 l*.\)R').CONCLUSIONS

" Fig.18.Meas.urements aompal'ed to pl'ediation.

(5)K.W.Priest, G.K.Carter and G.W.Juette,"Calculation of the radio interference statistics of transmission lines," IEEE TRANS.PAS, Vol.91, No.1, pp.92-98 January/February 1972.The authors.are indebted to Dave Milone of the General Electric Company and Noel Lilly of the Georgia Power Company for their efforts in making the field measurements.

REFERENCES (7)J.G.Anderson, M.Baretsky, J.J.LaForest, D.D.MacCarthy, F.A.Fisher,E.F.

Magnusson, K.O.Tangen, EHVTransmission Line Reference Book New York: Edison Electric Institute, 1968*.(8)'Institute of Electrical and Electronic Engineers (IEEE), 345 East 47th Street, New York, N.Y.10017."IEEE Trial Use Standard Procedures for the Measurement of Radio Noise fro inhead Power Lines," Std.430-1972.A9KNOWLEOOEMENT (6)J.G.Anderson, L.O.Barthold,a statistical*

method'for insulation design of EHV transmission lines,".IEEE TRANS.PAS Vol.83, pp.271-280, March 1964.(2)IEEE Committee*Report, tt'rransmission system radio&influence," IEEE TRANS., PAS 31 TP 65-65 (3)J.J.Cla,de, C.H.Gary, M;R.Moreau,"Usage and checking of the theoretical relations between fields, CUfrents and excitation functions in radio frequencies in the case of short test lines," IEEE TRANS.69TP 64-PWR Winter Power Meeting, January 1"969..(4)*G.W.Juette, L.E.Zaffanella,"Radio noise, audible noise and corona loss of EHV and UHV transmission lines under rain: predetermination based on<lag!'!tests," IEEE TRANS.(PAS).vol.89;.No.6, pp.1168-117*8, July/August 1970.(1)G.E.Acb!.ms, nAn analysis of theinterference characteristics of bundledductors,ft,AIEE TRANS.(PAS), pt.m,Vol.75, pp*.1569-1584, February 1956.5 10 20 so 100 200 SOD 1000 2000 SOOO DISTANCE rROM CENTER OF RIGHT-Or-WAY-FEET

-**"'1\**\.FOUL WEATHER (EXCEEOEOSO%

_I"\OF TIllEI'" NOfiCROSS.

...5*i\-

llEASUREllEIj1ll i,OUL PREOICTKl.Il I\.o o 2 I 40 70 80 The significant conclusions may be summarized as follows: 1.Radio station predicted field strengths agree well With measurements.

2.Noise predictions, including the statistical weather effects,5 agree well with fieldments.3.Fair weather conditions prevail some 91%of the time.4..Shielding effects of transmission line inay produce substantial variations in the signal pattern.However, these variations do not have a significant effect outside theOf-way.5.Agmg has tended to reduce the line noise levels, but the effect has been minor._ms data has a

width.

effiiCtoii:-ai.e,:PUOUC:

That is, to acquire the smallest right-Of-way width possible without introducingjectionable radio interference.

Mt.er...extensive it was concluded that a width greater than 150 feet would restrict public uses unnecessarily and there would not be'*objectionable interference at thil:!distance.:;30§20::: i 10...I-,.7

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