ML19347D937

Rept on Site Test Voltage Study.

ML19347D937
Person / Time
Site:	Brunswick
Issue date:	02/20/1981
From:	Dsouza K, Greiman C UNITED ENGINEERS & CONSTRUCTORS, INC.
To:
Shared Package
ML19347D934	List: ML19347D933 ML19347D937
References
NUDOCS 8104140502
Download: ML19347D937 (26)

Text

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1 REPORT ON SITE TEST VOLTAGE STUDY FOR CAROLINA POWER & LIGHT COMPANY BRUNSUICK STEAM ELECTRIC PLANr UNIT NO. 2 E

UNITED ENGINEERS & CONSTRUCTORS INC.

UE&C Job Order No. 9527-089 Date: February 20, 1981 Prepared: wh3N '

/K. D'Souza Approved: N- -

C. D. Greiman i

l 8 104140 Q

t s

INDEX Page No.

1 1.0 PURPOSE 2

2.0

SUMMARY

OF RESULTS 2.1 SAT STEADY STATE 2 2.2 CIRCULATING WATER PUMP START 3 2.3 CIRCULATING WATER PUMP RUN 4 2.4 SCREEN WASH PUMP 2B START 5 2.5 CIRCULATING WATER PUMP AND SCREEN WASH PUMP 2B RUN 6 2.6 REMARKS 7 2.7 WORST CASE TEST VOLTAGE 7 2.8 TAP SETTINGS 7 2.9 OPERATING VOLTAGE LIMITS 7 2.10 TOLERANCE 7 3.0 CRITERIA 8 4.0 METHOD OF ANALYSIS 9 4.1 PER UNIT VALUES 9 4.2 IMPEDANCES 9

5.0 REFERENCES

10 6.0 DATA 11 6.1 SPECIFICATIONS 11 APPENDIX A1

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1.0 PURPOSE 1.1 This study is to review and compare the site test voltage on various 4160V and 480V buses to the analytical study voltages obtained through UE&C computer program ' Volts'. All the B.O.P. buses and emergency buses loads are fed from the Start-up Auxiliary Transformer (SAT).

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.. I 2.0 SU M ARY OF RESULTS 2.1 SAT STEADY STATE TEST TEST TEST STUDY LOAD CURRENE VOLTAGE VOLTAGE BUS NAME MW AMPS VOLTS VOLTS 2B 3.74 588 4130 4208 2C 4.21 672 4060 4043 E4 - 134 4060 4043 2D 7.68 1092 4060 4043 E3 - 205 4060 4043 COM B .53 76 4060 4043 UNIT SUB 2E .6696 1386 480 450 UNIT SUB 2F .63 1301 485 466 UNIT SUB E7 .5976 945 480 477 UNIT SUB E8 .396 580 482 483 MCC 2PB .0072 10 482 483 l

2.2 CIRCULATING WATER PUMP START TEST TEST TEST STUDY

- LOAD CURRENI VOLTAGE VOLTAGE l

. BUS NAME MW AMPS VOLTS VOLTS 2B 3.43 570 4095 4191 2C 3.79 651 3840 3876 E4 - 128 3845 3876 2D 13.76 2079 3840 3876 E3 -

175 3840 3876 COM B .53 76 3865 3876 UNIT SUB 2E .6696 1386 480 445 UNIT SUB 2F .63 1301 485 446 UNIT SUB E7 .558 924 456 457 UNIT SUB E8 .3852 512 460 466 MCC 2PB .0065 11 458 466 9

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2.3 CIRCULATING WATER PUMP RUN TEST TEST TEST STUDY LOAD CURRENT VOLTAGE VOLTAGE BUS NAME MW AMPS VOLTS VOLTS 2B 3.46 588 4130 4199 2C 4.0 672 4000 4060 E4 - 134 4000 4060 2D 8.9 1344 4000 4060 E3

- 204 3990 4060 COM B .53 76 4060 4060 UNIT SUB 2E .6696 1386 480 469 UNIT SUB 2F .63 1301 483 470 UNIT SUB E7 .549 924 480 478 UNIT SUB E8 .396 512 480 488 MCC 2PB .0072 10 479 488 l

l 2.4 SCREEN WASH PUMP 2B START TEST TEST TEST STUDY LOAD CURRENT VOLTAGE VOLTAGE MW AMPS VOLTS VOLTS BUS NAME f 2B 3.46 588 4130 4191 2C 4.54 840 3980 3952 E4 - 286 3983 3952 2D 8.8 1365 3980 3952 E3 - 202 3962 3952 COM B .53 76 4025 3952 UNIT SUB 2E .6696 1365 476 456 UNIT SUB 2F .63 1281 480 456 UNIT SUB E7 .549 924 476 465 UNIT SUB E8 .5976 1848 456 419 MCC 2PB .0486 8 456 393 1

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2.5 CIRCULATING WATER PUMP AND SCREEN WASH PUMP 2B RUN TEST l TEST TEST STUDY LOAD I CURRENE VOLTAGE VOLTAGE BUS NAME MW AMPS VOLTS VOLTS 2B 3.46 588 4130 4197 2C 4.10 731 4025 4026 E4 - 164 4020 4026 2D 8.9 1365 4025 4026 E3 - 205 4025 4026 COM B .53 76 4060 4026 UNIT SUB 2E .7666 1386 480 466 UNIT SUB 2F .63 1301 485 465 UNIT SUBME7 .594 924 480 475 UNIT SUB E8 .5364 735 480 478 MCC 2P5 .108 160 477 475 t

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2.6 REMARKS The results show all the test voltages closely approach the study voltages obtained through UE&C ' Volts' program.

2.7 WORST CASE TEST VOLTAGE The Worst Case Test Voltage is Bus 2B Voltage of SAT Steady State (Ref. 2.1.) and is well within the positive and negative limits of the error of the recording instruments used for the Test at BSEP.

The Study Voltage 4208V of Bus 2B (Ref. 2.1.) is between 4211V and 4050V which is the higher and lower limits of instrumentation error Appendix A. Instrumentation error calculation).

2.8 TAP SETTINGS The transformer tap settings were the same as used in the report on voltage drop study (Ref. 5.2.) .

2.9 OPERATING VOLTAGE LIMITS The Operating Voltage Limits are the same as shown in the report on voltage drop study (Ref. 5.2.) .

2.10 TOLERANCE The test voltage should be identical to the analytical voltage. If there are variations they should be well within the instrumentation error of the recording instruments and this positive and negative error is considered as the tolerance.

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3.0 CRITERIA The Site Test Voltages and the Study Voltages obtained through UE&C

' Volts' program should be identical. If there are any variations then it should te well within the error of the recording instruments used for the test at BSEP.

All the B.O.P. buses and emergency buses loads are from the SAT. At the time of the test the power generation was 407. of the rated capacity of each unit and the following loads were running:

1. $us 2B - Reactor Recirculating Water 2;sps 2A and 2B

2. Bus 2C - Circulating Water Pump 2C, Condenser Booster Pump 2A, Heater Drain Pump 2B, Condensate Pump 2A

3. Bus 2D - Circulating Water Pump 2D, Condenser booster Pump 2C, Heater Drain Pump 2C, Condensate Pumps 2C, Chillers 2A

4. Bus E3 - Cottrol Rod Drive Hydraulic Pump 2A, Nuclear Service Water Pump 2A, Conventional Service Water Pump 2A

5. Bus E4 - Nuclear Service Water Pumps 2B, Conventional Service Water Pumps 2B

6. Bus Common B - Turbine Building Cooling Tower Pumps 2A and 2B

7. Bus E7 - Reactor Building Closed Cooling Water Pumps 2A and 2C, Reactor Building Supply Fans 2A and 2C, Reactor Building Exhaust Fans 2A and 2C

8. Bus E8 - Reactor Building Exhaust Fans 2B

9. Bus 2E - Turbine Building Closed Cooling Water Pump 2A, Turbine Building Supply Fans 2C, Turbine Building Exhaust Fans 2A and 2C

10. Bus 2F - Turbine Building Closed Cooling Water Pumps 2C, Turbine Butiding t

l l Supply Fans 2B and 2D, Turbine Building Exhaust Fans 2B i

All the transformer tolerances, cable impedances, running and starting loads were considered.

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4.0 METHOD OF ANALYSIS I The UE&C computer program ' Volts' was used to calculate the bus voltages.

This program performs a Gauss-Seidal load flow calculation. Up to 25 buses can be modeled. Transformer with tap changes can be represented. Bus voltages are computed by the program to tolerance of 10001.

4.1 PER UNIT VALUES Calculations were performed using a per unit scheme with the base values as follows:

System Base Volts Base MVA 4160V 4160V 100 480V 480V 100 4.2 IMPEDANCES Transformer and cable impedance values were taken from the voltage drop study (Ref. 5.2.) .

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5.0 REFERENCES

5.1 UE&C User Guide for Volts Program 25 Bus load Flow Analysis and Voltage Regulation Program, July 15, 1980 5.2 Report on Voltage Drop Study for Carolina Power & Light Company Unit No. 2 dated December 15, 1980, Revision 2 5.3 CP&L letter to NRC Serial No. NO-80-1093 dated July 24, 1980 5.4 9527-F-3002 Auxiliary one Line Diagram 4160 Volt Swgr. 2B, 2C, 2D and Common B 5.5 9527-F-3053 Auxiliary One Line Diagram 480V System MCC 2CA, 2CB, 2PA, 2PB and 2SA 5.6 9527-F-3005 Auxiliary One Line Diagram 480V System Unit Substa. 2E, 2F, E7, E8 and Common D i l

6.0 DATA 6.1 SPECIFICATIONS Gould Brush Recorder 260 Gould Brush Recorder 2800 Could R.M.S. 14 vel Converter Model 13-4618-10 Westinghouse Tyre VP-840 Watt Transducer Requirement of Instrument Transformers ANSI C-57.13-1978 O

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APPENDIX SITE TEST VOLTAGE STUDY FOR CAROLINA POWER & LIGHT COMPANY BRUNSWICK STEAM ELF.CTRIC PLANT UNIT NO. 2 El UNITED ENGINEERS & CONSTRUCTORS INC, VOLTAGES AND IMPEDANCE DIAGRAMS i

A1

SITE TEST VOLTAGE STUDY SAT STEADY STATE STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B- 1.0114 4208 4160V Bus 2C 0.9720 4043 4160V Bus 2D 0.9720 4043 4160V Bus Conunon B 0.9720 4043 480V Unit Substation 2E 0.9377 450 480V Unit Substation 2F 0.9706 466 480V Unit Substation E7 0.9933 477 480V Unit Substation E8 1.0062 483 480V Motor Control Center 2PB 1.0059 483 N0fE: All voltages are on the base voltage shown in the left-hand column 1

A2

SITE TEST VOLTAGE STUDY SAT CIRCULATING WATER PUMP START STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACIUAL VOLTAGE 4160V Bus 2B 1.0074 4191 4160V Bus 2C 0.9318 3876 4160V Bus 2D 0.9318 3876 4160V Bus Common B 0.9318 3876 480V Unit Substation 2E 0.9272 445 480V Unit Substation 2F O.9288 446 480V Unit Substation E7 0.9520 457 480V Unit Substation E8 0.9702 466 480V Motor Control Center 2PB 0.9698 466 NOIE: All the voltages are on the base voltage shown in the left-hand column

l SITE TEST VOLTAGE STUDY SAT CIRCULATING WATER PUMP RUN STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0095 4199 4160V Bus 2C 0.9760 4060 4160V Bus 2D 0.9760 4060 4160V Bus Common B 0.9760 4060 480V Unit 3ubstation 2E 0.9764 469 480V Unit Substation 2F 0.9782 470 480V Unit Substation E7 0.9968 478 480V Unit Substation E8 1.0162 488 480V Motor Control Center 2PB '

1.0159 488 NOIE: All the voltages are on the base voltage shown in the left-hand column A4

SITE TEST VOLTAGE STUDY SAT I SCREEN WASH PUMP 2B START STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0076 4191 4160V Bus 2C 0.9501 3952 4160V Bus 2D 0.9501 3952 4160V Bus Common B 0.9501 3952 480V Unit Substation 2E 0.9493 456 480V Unit Substation 2F 0.9509 456 j 480V Unit Substation E7 0.9691 465 ,

480V Unit Substation E8 0.8735 419 480V Motor Control Center 2FB 0.8361 401 NOTE: All the voltages are on the base voltaEe shown in the left-hand column A5 l

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SITE TEST VOLTAGE STUDY SAT CWP AND SCREEN WASH PUMP 2B RUN STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0089 4197 4160V Bus 2C 0.9678 4026 4160V Bus 2D 0.9678 4026 4160V Bus Comon B 0.9678 4026 480V Unit Substation 2E 0.9702 466 480V Uni' " tbstation 2F 0.9689 465 480V Unit Substation E7 0.9899 475 480V Unit Substation E8 0.9951 478 480V Motor Control Center 2PB 0.9898 475 l

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=

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+J.00582 SAT lMPEDAMCE DIAGRAM CIRCULATIMQ WATER PUMP START SITE TEST VOLTAGE. STUDY TEST DATA FIG. A2.

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t 230 KV SYD @

Z J.O377

2=

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' 2B Z: 0.0221

+ 3 . 4 821 g, ,44

+J 2.'59l5

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<>  :;- ,

2 = .9159 Er.BtGT 2 .8978 Z=.9325 e

+J 4.693

-o- c.7 g---o--2E

+U 4 683 g + j 4.75

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@--o- EB hi 4.657 g , i3,4 3 tj 5.16 04 y y 6! 396 e

S = . 54 9 *

s = . 4696 S=.63

+d . 5 372 +J 9378 2-2.3273

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Ji 2. BM1 v

S m .0077.

+3.co4(

SAT IMPEDANCE DIM, RAM clRCULATINf3 WATER POMP RUN SITE TEST VOLTAGE STODY TEST DATA FIG. A3 BEN 4

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230 KV SYD Z=do.o377 a "

c l E = 0. 0 2.21 E, .o 116 l td .4621 F3.4596 2B o

S = 3.46

+3 1.3917

> 2C,'2.D, COMMoM B 5  ;,  ;; "

;;  :,

7= .9159 23 8267 2=.8978 E=.9326 tJ 4.693 td 4.663 +j 4.75 +3 4. 659 4 Sr 13.37 HH E7 -o-. 2 E -<r 2F , EB +3 7.2.534

" P P S=.5976 S = . 5 4 ?> s = . GG9 6 s. 43 +d 1.3316

+3 52B3 +3 .904 5 +j . 859B E=2.B173 2PB +31. 8571 o S .o4s6 N o.osol z = 1.9094 scWP 2B +J i.4 ol'1 P

SAT MPEDAMCE DIACRAM 1 SCREEN WASH PUMP 2B START Y=.OO29 SITE TEST VOLTACiE STupy -J.0117 FIGi A4 TEST DATA BEN 2.

l b , 23oXV SYD Z 3.0377 AlbO V 2 = . o 2 2.1 7'- l'b

• d**

+3.4821 b ,.

28 4l60V V

5 = 3.%

+3 ?. 3917 c.W.P. to

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, ,, e  ; , ,,  : , 4l60 V

2. 9159 2=.8267 E.= . 897 8 Z .9325

+j 4.693 +3 4.683 +j 4.75 +-J 4.6 6 7 y 480 h -o- E7 h-o- 2.E -o--2F @: 5=.5364 ES

+

652

" " Y

$ = . Ec)4 S = .% 67. +3 . 2927 Er.63

+3 . 4 872. +3.B604

+J . B >31 gg [f2.sds e

S= . lob

+3.o762 SAT iM PE D AMCE DIAQRAM CWP + SCREENWASH PUMP 2B ROM SITE . TEST VOLTAGE STUDY TEST DATA FlQ.A5 BEN l

SITE TEST VOLTAGE STUDY APPENDIX SAT STEADY STATE INSTRUMEtrfATION ERROR CAIEULATIONS 4160V BUS 2B (Ref. Fig. A6) l INSTRUMENI MAXIMUM ML N NAMES VOLTAGE 7. ERROR VOLTAGE VOLTAGE Potential + 0.6 4154.78 Transformer - 0.6 4105.22 RMS Level + 1.0 4196.32 Converter 4154.78 - 1.0 4113.23 l

+ 1.0 4146.27 4105.22 - 1.0 4064.17 2800 Brush + 0.35 4211

• Recorder 4196.32 - 0.35 4181.63

+ 0.35 4127.62 4113.23 - 0.35 4098.83

+ 0.35 4160.78 4146.27 - 0.35 4131.76

+ 0.35 4078.39 4064.17 - 0.35 4049.95

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• The maximum and minimum voltages which could be recorded taking into account instrumentation error A12 l

VOLTA 4E R E.C O R D E.R CONNECTION FOR 41 GOV BOS 2 8

> RMS LEVEL t; VOLTAGE  :  : CoMVERTER 2.800 BROSH INPOT 41&ov 5V Dc RECORDER AC f 120VAc roll SCALE ouT PUT SITE TLST VOLTA 4E STOPY S AT STE ADY STATE.

TEST DATA FlG. A G

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