ML17262A177

Rev 1 to Design Analysis EWR 4525-1, Fault Current Analysis of Power Distribution Sys.

ML17262A177
Person / Time
Site:	Ginna
Issue date:	07/27/1990
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A175	List: ML17262A174 ML17262A176 ML17262A177 ML17262A178
References
EWR-4525-1, EWR-4525-1-R01, EWR-4525-1-R1, NUDOCS 9010050247
Download: ML17262A177 (88)

Text

Design Analysis Ginna Station EWR 4525-1 I Fault Current Analysis of Power Distribution System Rochester Gas and Electric Corporation 89 East.Avenue Rochester, New York 14649 EWR 4525 Revision 1 July 27, 1990 Prepared By: Reviewed By: Electrical Engineer WC Electrical ngineer Date A.uZ((i~ZA:~~iv~~o Date Approved By: Manager, Electrical Engin ing 8((Vo Date Page i 9010050247 P PDR ADOCK 900920 05000244 PDC l

1,0 Ob'ective 1.2 1.3 The primary objective of this analysis is to verify that the reconfiguration of the offsite power system is capable of withstanding worst case faults without exceeding the allowable fault duties of the breakers per Design Criteria.Not included in the scope of this analysis is the determination of short circuit duties for two configurations:

when transformer 511 (UAT)is the supply for the auxiliary system, and when the emergency diesels are the sole supply to the 480 volt busses.These two configurations are not effected by the changes to the offsite power system made during EWR 4525.A detailed description of the scope for the proposed Offsite Power Reconfiguration Modifications can be found in the Design Criteria (Ref.2.1).II The fault currents will be calculated, using the PSS/U (Version 3.1)computer program with the Ginna Station distribution system modeled.The program uses standard fault current solution techniques as described in the user's manual, Reference 3.6, and has been verified as a valid modeling tool in Design Analysis 4525-3, Ref.3.2.1.4 1.5 The fault currents calculated by the program are for system conditions specified, by the user for each of the 4160 volt and 480 volt buses.The resultant fault currents output by the program will be analyzed to ensure that they do not exceed the momentary and interrupting duties of the circuit breakers.The fault currents calculated by the PSS/U for the offsite power reconfiguration will be compared to values previously calculated for the existing system to show that the new configuration does not significantly change available fault currents.2.0 Desi n In uts 2.1 Design Criteria, EWR 4525, Revision 4, December 8, 1989.2.2 Safety Analysis, EWR 4525, Revision 6, December 11, 1989.3.0 Referenced Documents 3.1 Drawings: 3.1.1 33013-652, Rev.8, 480 Volt One-Line'iagram

3.1.2 10904

Series-164,-165,-166, 480 Volt Motor Control Center 1C EWR 4525 Design Analysis Page 1 Revision 1 Date 7/27/90 l

.oltage circuit breakers rated on a total current basis." 3.17 ANSI C37.6-1966,"Schedules of preferred ratings for ac high voltage circuit breakers'rated on a total current basis." 4.1 Since the 4 kv electrical, distribution system is resistively grounded, the worst case fault current will be the three-phase bolted fault.Transformers 12A and 12B have 4 ohm neutral grounding resistors which limit the phase-to ground.fault currents to less than 600 amps, as shown on Ref.3.5 Drawing 33013-1724.

The 480 volt system at Ginna is an ungrounded.

delta-delta system.This configuration results in negligible phase-to-ground fault currents on the 480 volt side.4.2 Fault currents will be calculated using the PSS/U program, version 3.1, from PTI.This program calculated fault currents (E/X), and uses that to calculate interrupting and momentary duties in activity BKDY.4.3 To make the results of the PTI activity BKDY consistent with ANSI C37.010, the cases and results must be manipulated as follows: 4.3.1 For calculating the true interrupting duties of 4160V breakers, the motor data dictionary file will be altered so that the sub-transient reactance (x"d)for the motors is multiplied by 1.5 (x"d is assumed equal to 0.2 p.u.).This reflects the multiplying factor required by the table in section 5.4.1, p.40, of ANSI C37.010-1979.

PTI personnel confirmed that this method is appropriate.

In addition, another multiplying factor is applied to E/X for derating depending on the X/R ratio of the system as seen at the fault location.For the breakers rated on a Symmetrical Current Basis, this multiplier is calculated by the PSS/U program.Nultiplying factor F2 will be used to reflect remoteness from a generator.

4160 Volt breakers rated on a Total Current Basis have a different X/R multiplying factor.The PSS/U program does not calculate this, so the multiplying factor will be taken f rom the X/R curve in ANSI C37.5 Ref.3.15 Figure 3.This factor will then be multiplied by the E/X short circuit current calculated by PSS/U.(Sections 6.1.1 and 6.1.2 define which breakers are rated"Symmetrical" and which are rated"Total").4.3.2 For calculating the, momentary duties of 4160 volt Design Analysis EWR 4525 Page 3 Revision 1 Date 7/27/90

version 3.1.5.2 Ginna Station offsite power supply and onsite power distribution system and loads have been modeled.adequately as shown in Ref.3.2.5.3 The program results for interrupting and.momentary duties for the breakers are somewhat inconsistent with the applicable ANSI/IEEE standards.

PSS/U outputs of the BKDY activities have been manipulated.

as described.

in section 4.3 and as applied to the cases of section 6.6.0~Anal sis 6.1 The breaker ratings that will determine the maximum fault currents that can be sustained.

are determined.

per the methods of the ANSI standards of Ref.3.10, 3.12, and 3.16.Using references 3.1, 3.3, and.3.4, we can determine which standard.breakers to, consider for each bus fault.Attachment 1 shows she configuration and breaker types of the'kv system.6 1s1 The Westinghouse type 50DH350 breakers at 4160 v busses 11A, 11B, 12A, and 12B are rated on a"Total Current Basis" (ref.3.14)and.have the following short circuit ratings.The Interrupting Rating is per ref.3.4.The Momentary Rating for Total Rated breakers is 1.6 times the Max.Interrupting Rating.This is confirmed by Ref.3.17 which lists the Preferred Rating for this type breaker.Interrupting Rating at 4.16kv=48,000 amps RMS Maximum Interrupting Rating=50,000 amps RMS Momentary Rating=80,000 amps RMS 6 s 1 s 2 The Powell type SPV350-2 breakers (12AX,12AY, 12BX, AND 12BY)are rated on a"Symmetrical Current Basis" (Ref.3.13)and havo the following short circuit ratings (see Ref.3.9 and 3.10 for the detailed explanation of ratings).Interrupting Rating at 4.76kv=41,000 amps RMS Interrupting Rating at 4.16kv=46,900 amps RMS Close&Latch Rating=78,000 amps RMS 6.1.3 480 Volt breakers off of busses 13, 14, 15, 16, 17, and, 18 and HCCs 1C and 1D have fault current capabilities based on Ref.3.3 and Ref.3.14.The breakers to be evaluated for each bus are the smallest breaker off of that bus, assuming the fault on the opposite side of the Design Analysis EWR 4525 Page 5 Revision 1 Date 7/27/90

6.3.1 interrupting

duties and momentary duties.For 480 volt buses, one run to determine the symmetrical duty and the X/R ratio will be made for each bus.4160 volt Interrupting Duties: Using case ESCM9CI which utilizes the modified motor dictionary data that substitutes 1.5 x"d for x"d,'160 volt interrupting duties are calculated by PSS/U.Breakers from busses 11A, 11B, 12A, 12B to the SSTs and motors are the Total rated breakers.The Total Interrupting duty is determined by multiplying the short circuit current E/X by the X/R derating factor taken from ANSI C37.5 as explained in 4.3.1.These breakers will be evaluated by simulating faults at the busses 11A, 11B, 12A, 12B.See Attachment 2 for PSS/U results and application of the X/R derating.'The symmetrical interrupting duties of the breakers at 12AX, 12AY, 12BX, and 12BY can be determined from the PSS/U calculations at buses 12A and 12B.The results show the contributions through the X-or Y-winding breakers.Since we have shown that transformer 12B will have the worst fault currents, the 12BX and, 12BY results will be used to evaluate 12AX and 12AY.Refer to the Attachment 2 column titled Interrupting Duty, F2*E/X for these symmetrically rated breakers.All ratings shown are described in section 6.1.1 and 6.1.2.Bts 11A 11B 12A 12B 12BX 12BY 12AX 12AY Interrupting Dut (am s)36,731 36,805 36,731 36.805 28,961 28,665 28,961 28,665 Interrupting Ratings (am s)(94.16kv)48,000 48,000 48,000 48,000 46,900 46,900 46,900 46,900 DUt 76.5 76.7 76.5 76.7 61.8 61.1 61.8 61.1 6.3.2 4160 Volt Close-and-Latch (momentary)

Duties: Using case ESCM9C, 4160 volt momentary duties are calculated using the results of PSS/U.The PSS/U case results are in Attachment 3.Per section 4.3.2, the'ctual momentary duty is calculated by multiplying the Design Analysis EWR 4525 Page 7 Revision 1 Date 7/27/90 E l I 1 I t, Short cir uit contribution

=4 times Pull Load amps=1248 maps This additional fault current of 1248 amps, when added to the fault current calculated above, does not cause the MCC breaker ratings to be exceeded, and a 15%margin still exists.The impact on the 480 and 4160 volt busses margins will be even smaller.Future revisions of the computer model will include these motors to add their contribution to this calculation.

6.3.4 4160 Volt Duties with A-B Breaker Closed.Case ESCM9C will be modified to close the A-B bus tie breaker, forming case ESCM9CAB.The fault duty calculation will assume no motors, as the A-B tie is only closed during a shutdown condition.

Without the corrections for motor contributions, the results of a single case can be used, for both interrupting and momentary duties.Also, since buses llA, 11B, 12A, and 12B are all tied together, one fault simulation will cover all four buses.(Results in attachment 3).4Kv buses 11A 11B 12A 12B (Total Current Breakers)Interrupting Duty (Am s)Interrupting Rating (Am s)DQ'C 34,419 Momentary Duty (Am s)50,523 48,000 Momentary Rating (Am s)80,000 71.7~Dut 63.2 6.4 The maximum fault currents in section 6.3 do not exceed the interrupting current ratings of the circuit breakers.6.5 Maximum available fault currents had been previously determined in Ref.3.8 for EWR 2929.These values wer'e calculated by hand, using standard, engineering methods as detailed in the analysis.This simplified method does not take in to account contributions of the motors in the station.The PSS/U program has an option (NM)to do the equivalent calculation, solving for fault currents with no motors.To show that available fault currents (E/X)have not changed significantly with the offsite power Design Analysis EWR 4525 Page 9 Revision 1 Date 7/27/90 e

14 18 (DG 1A)55,337 amps 50,000 amps 111';48,879 amps 30,000 amps 163 16 17 (DG 1B)56,418 amos 51,148 amps 50,000 amps 113 30,000 amps 170: The fault currents are significantly above the ratings of the breakers.The high fault currents are caused.by this specific test configuration.

where the offsite power is parallelled with the diesel generators, as well as the parallelling of the two 4160/480 volt substation transformers.

This configuration would.occur only during the monthly diesel generator testing, which lasts for 1-2 hours per month.Ne are presently investigating modifications to the monthly test procedure which will reduce the available fault current to a level below the breaker ratings.7.0 Results 7.1 7.2 7.3 The fault duties resulting from this modification do not cause the design limits of the circuit breakers for 11A, 11B, 12A, 12B, 12AX, 12AY, 12BZ, 12BY, 13, 14, 15, 16, 17, 18, and NCC 1C and 1D to be exceeded, except for the configuration as noted in 7.3 below.I A compari on of the fault currents available for the reconfigured offsite power system to the values calculated for the original configuration shows that t.here is no significant changes in fault'current.Therefore, no changes to the relaying coordination is required.As shown in section 6.6 above, the available fault current exceeds the 480 volt breaker duties for this D/G tes t conf iguration.

Corrective actions are being evaluated to address this condition, and any resulting changes in configuration will be modelled and simulated to evaluate new fault current levels.It should be noted that this overduty condition is not a result of the modifications performed on the offsite power system for EWR 4525.Design Analysis ERR 4525 Page 11 Revision 1 Date 7/27/90

OFFSITE DISTRIBUTION SYSTEM STA.1JA STA.20<TO GSU TRANSFORMER 767 52 751 52 Saxwv, aS I 128X NC I 128 128Y NO NO 12AX 12AY NC I I 52 52 REMOVABLE UNK TO gl GENERATOR 5o b83$o Q&EARLS I~x TO ST@SERV.TRANS.52 TO STA, SERV.TRANS.pie DUMMY 8REAKER 52 2 TO STA.SERV.TRANS.$15 52 TO STA.SERV.TRANS.52 52 TO STA.SERV.TRANS.$14 52 TO STA.SERV.TRANS./le DUMMY BREAKER SAFElY TRAlN 8 SAFElY TRAlN"A"

ATTACHMENT 4160 VOLT INTERRUPT INB DUTIES I

PONER TECBHOLOGIES IHC.PONER STSTEH SIHQLhTOR,PSS/Q GIHHh ChSE ESCH9CI, ONLIHE, X D t 1.5 TOR IHTERRQPTIHG ghQL 123 KV GRID, d-dKB-B CLOSED, RGE200IH.HOT DICTIOHhRT TILE TERSIOH 3.1 MC 07 1989 TBQ, 11:48 CTCKE PhRTIHG BREhXER TIRE 5 3.0 12h llh llh llhC llh lldS lih SST13 IHTERQPTIHG DQTT E/I I/R gt E/l 28.1 ZQ9 34328.1 28193.3 20.9 28193.3 3679.2 20.9 3679.2 2278.8 20.9 2278.8 181.5 20,9 181.5 HOHEHThBT DQTT F2>>E/I 1.6ef4E/X 1,6if2!E/l 35889.6 54925.0 57423.4 29475.8 45109'47161.3 3846.6 5886.7 6154.5 2382.4 3646.0 3811.9 189.8 290.4 303.6 (i~cMK 1

PONHR TECHNOLOGIES IHC.PONER SYSTKH S!HULdTOR,PSS/0 GIHHh ChSE ESCH9CI, OHI IHE, X'D 4 1.5 fOR IHTERRUPTIHG fhQI 123 KT GRID, h-ddB-B CLOSED, RGK200IH.HOT DICTIOHhRT fILE YKRSIOH 3.1 DEC 07 1989 TRO, 11:49 CYCIE PhRTIHG'IHTERUPTIHG DUTY BREdKER TIHE X X/R fe K/X f2'/X 5 3.0~i@34396.9 35809,6 12B 11B 28779.5 20'28779.5 29961'11B 11BC 3237.0 20.5 3237.0 3370.0 11B llBS 2272.0 20.5 2272.0 2365.3 11B SST15 113.0 20.5 113.0-117.7 HOHEHThRT DUTY 1.6efeE/X 1.64f2!K/X 55035.1 57295.3 46047.3 47938.4 5179.2 5391,9 3635.1 3784.4 180.9 188."3

~t POMKR TECBKKOGIES IHC.POMER SYSTEH SIHQLATOR,PSS/Q VKRSIOH 3.1 GIHHA CASK KSCHSC!, OHLIHK, I'D 4 1.5 fOR IHTEBRQPTIHG fhQL DEC 07 1989 123 EV GRID, h-A&B-B CLOSED, BGK200IH.HOT DICTIOHARY FIlE THQ, 11:50 CYCIE PARTIKG'HTEBQPTIHG DUTY BREAKER TIKE i E/X/R F!E/X 5 3.0'3432'~~0.9 34328.1 12A SST14 666.0 20.9 666'12A SST18 109.8 20.9 109.8 12A 11h 6139.4 20.9 6139.4 12d 12BY 27417.6 20.9 27417.6 12A 12AS 0.0 20.9 0.0 F24 K/X 35889.6 696.3 114.8 6418'28664.8 0.0 HOHKHTABY 1.64F>E/E 54925.0 1065.7 175.6 9823.0 43868.2 0'DQTT 1'4F24$/I 57423.4 1114.1 183.6 10269.8 45863.6 0.0 iXmqs

PONER TECHHOLOGIES IHC.POMER SYSTEH SIHDLhTOR,PSS/U VERSIOH 3.1 GIHHh ChSE ESCH9CI, OliLIHE, I'D!1.5 FOR IHTERRUPTIHG FhUL DEC 07 1989 123 EV GRID, h-dhB-B CLOSED, RGE200IH.HOT DICTIOHdRY FILE THU, ll:51 CYCfE PhRTIHG'HTERUPTIHG DUTT HOHEHThRY BUTT BREhKER TIRE~E/I'.,X/R F4 E/X F24 E/X 1.64F4E/I 1.64F24E/X 5 3.0'34396.9'34396.9 35809'55035.1 57295.3 12B SST16 687.9 20.5 687.9 716.1 1100.6 1145.8 12B SST17 273.2 20.5 273.2 284,4 437.0 455.0 12B 11B 5622.0 20.5 5622.0 5852.9 8995.2 9364,6 12BI 12B 27818.6 20.5 27818.6 28961.0 44509.?46337.7

'OMEB TECBHO'OGIES IHC.POMER SYSTEH SIHQLhTOR,PSS/Q VERSIOH 3.1!IHHh ChSE ESCHSCI, OHLIHE, I D t 1,5 YOR IHTERRQPTIHG fhQL DEC 07 1989".3 KV GRID, h-hhB-B CLOSED, RGE200IH.HOT DICTIOHhRY TILE THQ, 11:50 CYCLE PhRTIHG BREhEER TIHE 5 3.0 12h SST14 12h SST18 12h lih 12h 12BY lih 12hS IHTERQPTIHG DQTY E/X I/R Yt E/I 34328.1 20.9 34328.1 666.0 20.9 666.0 109.8 20.9 109.8 6139.4 20.9 6139.4 27417.6 20.9 27417.6.0.0 20.9 0.0 MSlkllT~N>I I 1.6'el>E/!

35889.6 54925.0 696.3 ,1065'114.8 175.6 64.7 9823.0 28664.8 43868.2 0.0 0.0 DQTY 1.6tE2tE/I 57423.4 1114.1 183.6, 10269.8 45863.6 0.0 7 2.A,NS~p S5/~

'3MER THCBEOLOGIES IEC.PONER STSTEE SIHULhTOR,PSS/0 VERSIOE 3,1 XIEEh ChSE ESCESCI, OELIEE I'D 0 1.5 TOR IKTERRUPTIEG fhUL DEC'07 1989".3 KV GRID, d-dkB-B CLOSED, RGE2001E.KOT DICTIOEhRY TILE THU, 11:51 C TCLE PdRTIEG BBEdKER TIER 5 3.0 12B 66716 12B SST17 12B 11B 12BI 12B IETERUPTIEG DUTY EOEHETdRY DUTT 2/X X/0 ft 6/2~I2e X 1.St&46/2 1.6162tH/X 34396.9 20.5 34396.9 35809.5 55035,1 57295.3 687.9 20.5 687.9 716.1 1100.6 1145.8 273.2 20.5 273.2 284.4 437.0 455,0 5622,0 20.5 5622.0 5852.9 8995.2 9364.6 21&10.6 20.5 21&10.0~28961.0 44500.2 46331.2

ATTACHMENT 4160 VOLT MOMENTARY DUTIES

.POVrHR'TECHHOLOGIES IHC.POHER SVSTEH SIMOLdTOB,PSS/D GIHHh CdSE ESCH9C, OHLIHE, HhX.IOhD fOB HhX..SC CQBBEHT 123 KV GRID, h-hhB-B CLOSED, fOB HhX.fhDLT.CURBEHTS VEBSIOH 3.1 DEC"07 1989 THU,.'l:13 CVCI'K PhRTIHG BRKhKKR TIHK 5 3,0 12h 11d llh llhc llh llhS llh SST13 IHTERQPTIHG DDTT E/X X/R ft E/X f24 E/X 38392.5 20.6 38392.5 40020.6 29285.7 20.6 29285.7 30527.6 5451.3 20.6 5451.3 5682.4 3398.7 20.6 3398.7 3542.8 262.4 20.6 262.4 273.6 HQIKHKhB~1.~f4E/K 1.6ef2t 61.1 2.9 4685.48844.1 8722.0 9091.9 543.668'9,9.7 uS I

POMXR TXCBHOLOGIES IHC.POMHB STSTElf SIHQLhTOR,PSS/Q GIHHh CdSX ESCH9C, OHLIHE, HdI.LOhD FOB HhI.SC CQRREHT 123 IT GBID, h-dhB-B CLOSED, FOR HhI.FhQLT CQBRXHTS VERSIOH 3.1 DEC 06 1989 MXD,.18:41 CTCLX PhRTIHGBREdXER TIME 5 3,0 12B llB 11B 11BC 11B 11BS 11B SST15'HTHRQPTIHG DQTT I/I I/B P E/I F2!E/I 38334.1 20.1 38334.1 39773.3 29984,4 20.1 29984.4 31110.2 4806.5 20.1, 4806.5 4987.0 3383.'5 20.1 3383.5 3510.5 165.3 20.1 165.3 171'61 5 47975.7690.4 5413 4.5 63.3 776.3 979.2 5.9 274.

I jg gcpjsooras rsc.rona srsras srsossroa<ossp 123 EV GRID, h-haB-B CI,USED, FOR lfhE.FAUIT CUBBHETS VEESIOE 3,1 DEC 06 1989 NEDo 18:39 CTCIE PARTIEG BREAKER TIEH 5 3.0 12A SST14 12A SST18 12h llh 12h 12BT 12A 12AS'ETEBUPTIBG DUTT E/Z I/R TS H/I 38392.5 20,6 38392.5 909.9 20.6 909.9 160.7 20.6 160.7 9112'20.6 9112.2 28215.7 20.6 28215,7 0.0 20.6 0.0 72$E/I 40020.6 948.4 167.5 9498.6 29412.1 0.0 1.E4H/!61.1 1455, 257.1457.4 45.0 0.0 1.6ef2i 6 2.9 1517.5 268.0 197.7 4.4 0,0/y+1.4>

POMER TECHHOLOGIES IHC.POMER STSTEH SIHUlhTOR,PSS/U GIHHd ChSE ESCHSC, OHLIHE, HhZ.LOhD fOR Hh!.SC CURREHT'23 XY GRID, h-ddB-B CLOSED, fOR Hhi.fdULT'CURREHTS CYCLE PdRTIHG IHTERUPTIHG DUTY BREhKER TIHE E/I I/R f!E/I f24 E/E 5 3.0 38334.1 20.1 38334.1 39773.3 12B SST16 935.3 20.1 935.3 970.4 12B SST17 387.9 20,1 387.9 402.4 12B llB 8355.2 20.1'355.2 8668.9 12BI 12B 28661.7 20.1 28661.7 29737.9 HO 1.QOE/E 61 4,5 149.620.6 1336.4 8.8 1.64f24 6 7.3 1552.7 643.9 3870.3 4 0.6 YERSIOH 3.1 DEC 06 1989 NED, 18:42

'Y a POKER 7ECHHGLGSIES IHC.PGMER SYSTEN SINULATOR)PSS/U GIHHA CASE ESCN9CAB, DHLIHE;A-B TIE'REAKER CLOSED 123 KV GRID, A-MB-B CLOSED, FOR NAX, FAULT CURREHTS VERSION 3.1 JAH 26 1990 FRI, 16:27 5" CYCLE PARTING HDDE BREAKER TINE ilA 5 3.0 12A iiA 1iA i l AC 11A liAS liA SST13 1iA i iB IHTERUPTIHG DUTY c/X X/R F!E/X gg~~~31577.4 15577.2 22.9 15577.2 0.0 22.9 0.0 0.0 22.9 0.0 0.0 22.9 0.0 16000.2 22.9 16000.2 F21 E/X 33574.1 16562.2 0.0 0.0 0.0 17011.9 NONEHTARY DUTY 1.61FCE/X 1~61F21E/X 50523.8 53718.6 24923.6 2&499.6 0.0 0.0 0.0 0.0 0.0 0.0 25600'27219.1 Qy QQ, t4o (~c~S uygSM Xu+(loath Kv acne M s)2xA, F i=),og=51,5T1 w lA>l~u j'4phqa 4c~\~o4.v,~.P,QSZ.C.31.4~c~

ATTACHMENT 4 480 VOLT FAULT DUTIEB

POMER TECHHOLOGIES IHC.POMEB SISTER SIHQLhTOR,PSS/0 G!HHh CdSE ESCHSC, OHLIHE, HdX.LOhD VOB HdX.SC CQRREHT',123 XT GRID, h-dhB-B CLOSED;: ROB Hh!.YhQLT CQRREETS'YCLE PhBTIEG IHTEBQPTIEG DQTT BEdKEB TIRE, E/X X/R ft E/X 724 E/X 0 0.0 23377.4 2.9 23377.4 23377.4 13 SST13 20896.1 2.9 20896.1 20896.1 13 13C 212&.4 2.9 2128.4 2128.4 13 13S 516.0 2.9 516.0 516.0 VERSIOB 3.1 DEC.06 1989 MED, 18:59 HOBEHTdBY DUTY 1,6!FIE/X 1.6!t24E/X 37403.9 37403.9 33433.7 33433.7 3405.4 3405.4 825.6 825.6

POMEB'ECRHOLOGIES IHC.POEER SYSTEH SIHULhTOB,PSS/U GIHHh ChSE ESCH9C, OHLIHE, 5hZ.LOhD ROB HhZ.SC CURREHT 123 IV GRID, h-khB-B CLOSED, ROB HEZ.EhULT CUBREHTS YEBSIOH 3.1 DEC'06 1989 RED, 18:43 CYCLE'PhRTIHG IHTEBUPTIHG DUTY 0 BREhEEB TIRE E/Z Z/B P E/Z 0 0.0~39000.0.2 39090.!14 SST14 28892.3 4'28892.3 14 1C 0.0 4'0.0 14 14C 8846,6 4.2 8846'14 14S 1731.1 4.2 1731 F 1 f2!E/Z 39099.1 28892.3 0'8846.6 1731.1 HO!IEHThRT 1.6~TEE/Z 62558.5 46227.?0.0 14154.6 2769.7 DUTT 1.6!f2tE/Z 62558.5 46227.7 0.0 14154.6 2769,7 QQ Q%9 0

POBEIk TECHBOEOGIES IHC.POMER STSTEH SIHULdTOB,PSS/U GIHHd ChSE ESCH9C, OHLIHE, HhX.LOdD BOB HhZ.SC CURREBT 123 ET GBID, h-hkB-B CLOSED, TOR HdZ.EhULT CQRREHTS VER SIOH 3.1 DEC 06 1989 BED;-.19:02 CYCLE PhRTIHG BBEhKEB I!HE 0 0.0 15 SST15 15 15C 15 15S IHTERUPTIHG DUTY E/Z Z/R fw E/Z 22520.3 2.7 22520.3 21010.9 2.?21010.9 841.0 2.7 841.0 767.9 2.7 767.9 F24 E/Z 22520.3 21010.9 841.0 767.9 HOHEHThRY DUTY 1.64E4E/X 1.6!l24E/X 36032.4 36032.4 3361T.4 33617.4 1345.7 1345.7 1228.7 1228.7

POMHll TXCHROTOGIXS IRC.POMXR SYSTXR SIRQLhTOR,PSS/Q GIRRh CdSE XSC59C, OHLIEE, HhI.LOhD TOB llhX.SC CQRBERT 123 XV GRID, d-kdB-B CLOSED, TOB Rh!.XhQLT,CQBRHRTS VXRSIOR 3.1 DXC'06 1989 MXD;18:44 CYCLE'hRTIRG IRTEBQPTIEG DQTT BBXhXEB TIRE X/Z I/B T4 X/X 0 0.0 39463.3 4.3 39463.3 16 SST16 28886.7 4.3 28886.7 16 1D 0.0 4.3 0.0 16 16C 10961.1 4.3 10961,1 16 16S 0.0 4.3 0.0 T24 E/Z 39463.3 28886.7 0,0 10961.1 0.0 RORERThBT DQTT 1.64X4E/X 1.64T24E/X 63141.3 63141.3 46218.7 46218.7 0.0 0,0 17537.8 17537.8 0.0 0.0

POMXIt TECRHOLOGIES IHC.POMER SYSTEH SIHQLhTOR,PSS/U GIHHk CdSX ESCH9C, OHLIHE, HdI.LOhD EOR HhX.SC CQRRXHT 123 XV GRID, d-ddB-B CLOSED, EOR Hh!.FhULT CQRREHTS'ERSIOH 3.1 DXC 06 1989 MED, 18:45 CYCLE'PhRTIHG IHTHRUPTIHG DUTY BREhEER TIRE E/i I/R P!E/Z 0 0.0 24336.1 3'24336.1 17 SST17 20462.2 3.0 20462.2 17 17C 2577.2 3.0 2577.2 17 17S 1547.2 3.0 1547.2 f24 E/7 24336 F 1 20462.2 2577.2 1547.2 HOHEHThRY DUTY 1.6neE/I 1.6~H24E/X 38937.8 38937;8 32739.5 32739.5 4123.5 4123.5 2475.6 2475.6 tq PORED TECHHOLOGIBS IHC.POMER SYSTBH SIHQLhTOR,PSS/0 GIHHh ChSE ESCH9C, OHLIHE, HhX.LOhD EOR HhZ.SC CQRREHT" 123 ZV GRID, h-hhB-B CLOSHD, EOR HhZ.BhULT CQRREHTS VBRSIOH 3.1 DEC 06 1989 MBD, 18:58 CYCLB PhRTIHG IHTBRQPTIHG DUTY BREhZER TIRE E/X Z/R 74 B/X 0 0.0 22260.5 2.7 22260.5 18 SST18 20795.2 2.7 20795.2 18 18C 0.0 2.7 0,0 18 18S 1567.2 2.7 1567.2 t2t B/Z 22260,5 20795.2 0.0 1567,2 HOHEHThRY DUTY 1.64E4E/X 1.64E2~E/X 35616.9 35616.9 33272.4 33272,4 0.0 0.0 2507.5 2507,5

PONEB THCHHOLOGIES IHC.POMHR.SYSTEH SIHULhTOB,PSS/U GIHHh ChSE HSCH9C;OHLIHE, HhX.LOhD fOR Hh!.SC CUBBHHT 123 HT GRID, h-kkU-B CLOSED, fOR HhX.fhULT CUBBHHTS VERSIOE 3.1 DEC.07 1989'HU;11:22 CYCLE'PhBTIHG IHTEBUPTIHG DUTT lfOHHHThRT DUTT BBEdKHR TIRE E/X X/R f4 E/X f24 E/X 1,64PE/X 1,6!f24E/X 0 0.0 11128.2 6.8 11128.2 11128.2 17805.1 17805.1 14 IC 11128.2 6.8 11128.2 11128.2 17805.1 17805.1

POWER TECHHONQIES IHC.POWER STSTEH SI50LhTOR,PSS/0 GIHHh ChSE ESC59C, OHLIHE, HhI.LOhD EOR HhZ.SC CQBREHT 123 EV QBID, h-dhB-B CLOSED)EOR Hhi.EhDLT CDBBEHTS VERSIOH 3.1 DEC'OT 1989 THU;11:23 CTCI,E PhRTIHQ IHTEBOPTIEQ DDTT 50HEHThBT DOTT HODR BBEhXER TIHE E/I Z/R f4 E/I f24 E/I 1.6ef4E/I 1.64E2eE/I 1D 0 0.0 11620.6 , 9.1 11620.6 11620.6 18592.9 18592.9 16 1D 11620.6 9.1 11620.6 11620,6 18592.9 18592.9 1

ATTACHNENT 5 FAULT DUTIES WITH NO NOTORS

POMME TECHEOLOGIHS IEC.POMEB.SYSTEM SIEULhTOR,PSS/U GIEEd CdSH HSC59C, 0!ILIEE, EhI.IOhD HOB BhI.SC CQBREET 123 XV GRID, h-dhB-B CLOSED, XOR Ehi..YhQLT CQRREETS'YCM PdBTIEG IETERQPTIEG DUTT BBEhKEB TIEH H/!Z/B Y!E/I f24 E/X 5 3.0 25325.3 18.8 25325.3 25968.9 12h SST14 0.0 18.8 0.0 0.0 12h SST18 0.0'8.8 0.0 0.0 12h llh 0.0 18.8 0.0 0.0 12h 12BY 25325.3 18.8 25325.3 25968,9 12h 12hs 0.0 18.8 0.0 0.0 EOEHEThBY 1.6!f4E/Z 40520.5 0.0 0.0 0.0 40520.5 0.0 DUTY 1.6!f24E/Z 41550,2 0.0 0,0 0.0 41550.2 0.0 YEBSIOE 3.1 DEC.07 1989 THU, 14:59 Ma nrr s lk POEHR THCMOLOGIHS IEC.POEER STSTEE SIEQLhTOR,PSS/U GIEEh ChSE-HSCESC, OELIEE, EhZ..LOhD fOR lhZ..SC CURREET 123 ET GRID, h-hdB-B CLOSED,, fOR lhZ.fdULT'CURRHETS'HRSIOE 3.1 DEC-07 1989 TRU, 14:59 CYCLE PhRTIEG BREhEHR TIER 5 3.0 12B SST16 12B SST17 12B 11B 12BZ 12B'ETHRUPTIEG DQTT E/Z Z/R f!H/X 25591.9 18.6 25591.9 0.0 18.6 0.0 0.0 18.6 0.0 0.0 18.6 0.0 25591.9 18.6 25591.9 f24 E/Z 26196.2 0.0 0.0 0.0 26196.2 EOEHETdRY DUTY 1.64M/Z 1.6!f24E/Z 40947.1 41913.9 0.0 0.0 0.0 0,0 0.0 0.0 40947.1 41913.9

PallER TECHNOLOGIES INC.POMEB SYSTEN SINULhTOB,PSS/U GINNh ChSE ESCNSC, ONLINE, HhX.IohD BOB NhX..SC CURRENT 123 ET GRID, h-hhB-B CLOSED,.BOB 9Z.ThULT CURRENTS VERSION 3,1 DEC 07 1989 THU'4:59 CTCLE PhRTING BREhEEB TINE 0 0.0 14 SST14 14 1C 14 14C 14 14S'NTERUPTING DUTY E/X X/R f4 E/X f24 E/X 28320,8 3.2 28320.8 28320.8 28320.8 3.2 28320.8 28320,8 o.a 3.2 a.o o.o 0.0 3'0.0 0.0 0,0 3.2 o.a 0.0 NONENThBT.

DUTY 1.64E4E/X 1.6!f24E/X 45313.3 45313.3 45313.3 45313.3 a.a o.o 0.0 0.0 0.0 0.0&rr~r~W'Ho~i~Žs l9

PORER TECBEOLOGIES IEC, PORER SYSTEK SIKULbTOR,PSS/U GIHlh CASE ESCK9C, OKLIEH, KAI.IOAD.XOR KAI.SC CURRElT 123 XV GRID, d-AAB-B CLOSED, EOB 9I.YAULT CURRElTS VNIOh 3.1 DEC 07 1989 TRU;'4:59 CYCLE PABTIEG BREAEEB TIKE 0 0~0 16 SST16 16 1D 16 16C 16 16S'KTEBUPTIEG DUTY E/Z I/R I!E/I 28376.2 3.2, 28376.2 28376.2 3.2 28376.2 0.0 3,2 0.0 0.0 3.2 0,0 0.0 3.2 0.0 f24 E/Z 28376,2 28376,2 0.0 0.0 0.0 KOKEETARY 1.6!E4E/X 45402.0 45402.0 0.0 0.0 0.0 DUTY 1.6!Y2tE/I 45402.0 45402.0 0.0 0,0 0.0 Ba>g>334 t

POMER TECHQKOGIES IHC.POMER STSTEH SIHQLhiOR,PSS/Q GIHHA CASE ESCH9C;OHLIHE, Hhi.LOAD TOR HAE.SC CQRREHT'23 ET GRID, h-AAB-B CLOSED, TOR HAZ.TAQLT CQRREHTS VERSIOH 3.1 DEC.OT 1989 THQ, 15:DD B 17 17 17 CYCL'E PARTIHG REAEER TIHE 0 0.0 SSI17 17C 17S IHTERQPTIHG DllIT E/E E/R P E/E 20319.2 2.5 20319.2 20319.2 2.5 20319.2 0.0 2.5 0.0 0,0 2.5 0,0 V24 E/I 20319.2 20319.2 0.0 0.0 HOHEHIARY DQTT 1,6et!E/I 1,64F2tE/I 32510.7 32510.7 32510,7 32510.7 0.0 0.0 , 0.0 O.D e

PONBB TECRHOLOGIES IHC.POHEB SYSTEH'SIHULhTOB,PSS/U GIHHh ChSE ESCHSC, OHLIHE, HhI., LQdD fOR HhZ.,SC CURBEHT" 123 EY GBID, h-hhB-B CLOSED, fOB HhI fhULT'CUBREHTS CYCLE PhBTIHG'IHTERUPTIHG DUTY BBEhIEB TIRE E/X Z/R f4'E/I f24 E/I 0 0.0 20342.1 2.5 20342.1 20342.1 18 SST18 20342.1 2.5 20342.1 20342.1 18 18C 0.0 2.5 0.0 0~0 18 18S 0.0 2.5 0.0 0.0 VEBSIOH 3.1 DEC'07 1989 TBU.15:00 HOHEHThRY DUTY 1.6tfeE/I 1.6ef2!E/I 32547.4 32547.4 32547.4 32547.4 0.0 0.0 0.0 0,0+Neo J go)'39+

4g PURER TECHNLOGIES IHC.POMER STSTEH SIHULhTOB,PSS/U GIllh'hSE ESCH9C, OHLIHE, HdE.Iadp FOB 9!.SC CUBRllT'23 ET GBID, h-diB-B CLOSED;.EOR HdI.CULT CQRREHTS VEBSIOH 3.1 DEC 07 1989 THU,-'5:00 CTCLE PhBTIEG IHTERQPTIEG DUTT HOHEHThBT DUTT BBEhXEB IIHE E/I Z/B ff E/Z f2'/I 1.6414E/I 1,64E24E/E o o.o 1oo40.6 5.4 1oo4o.s Io04a.s 1soss.o Isoss.o 14 1C , 10040.6 5.4 10040,6 10040.6 16065.0 16065.0 1I PONER TECHNLOGIES IEC.PONEB SYSTEH SIHULETOB,PSS/U GIEEh ChSE ESCE9C, QRLIEE, M.LOhD.EQR 5hZ..SC CURRENT l23 KV GBID, d-dhB.-B CLOSED;ROB M CULT CORREETS VEBSIOB 3.1 DEC-07 1989 THU,." 15:00~~~CYCLE PdBTIEG IETERUPTIEG DUTY HOHEEThBY DUTT BREduR TIRE E/Z Z/R Ye E/Z f24 E/Z 1,6efeE/Z 1,6!E2eE/Z 0 0.0 10421.5 6.5.10421,5 10421.5 16674.5 16674.5 16 1D 10421.5 6.5 10421.5 10421.5 16674.5 16674.5 Qo%a4r~W S mac hW~~14>A~

c ATTACHMENT 6 FAULT CURRENTS DURING DIESEL GEN.TESTING a,

POÃER TECHNDLOGIES IHC.'ONER SYSTEN SINULATOR,PSS/U GINNA CASE ESCH9DGA, DIESEL 1A OH DURING TEST NODE 123 KV GRID, DG!A DNLIHE, A-A&B-B OPEN P~~5~~CYCLE PARTING IHTERUPTIHG DUTY NDDE BRENER TINE E/X X/R F4 E/X F24 E/X 14 0 0'55336.9 3.8 55336.9 55336e9 14 SST14 26836.0 3.8 26836.0 26836.0 14 1C 0,0 3.8 0,0 0,0!4C 0.0 3.8 0.0 0.0 14!4S!740.3 3.8 1740,3 1740.3 14 DS!A 26831.7 3.8 26831.7 26831.7 VERSION 3.1 AUG 14 1990 TUE, 10:32 NONENTARY DUTY 1.64F&E/X!.6TF2TE/X 88539.1 88539.1 42937.6 42937.6 0.0 Q,Q 0.0 0.0 2784.5 , 2784.5 42930.8 42930.8 geo>4 w 9 C W-H,>+><+5(Yb1

~~

PONER TECHNOLDSIES INC.PONER SYSTEH SIHULATOR,PSS/U SIHNA CASE ESCH9DGA, DIESEL 1A ON DURING TEST NODE 123 KV SRID, DS'lA ONLINE, A-A&B-8 DPEH q'YCLE PARTING IHTERUPTIHS DUTY NODE BRENER TINE E/X X/R FC E/X F24 E/X 18 0 0.0 48879,0 3.7'8879.0 48879.0 18 SST18 18547.0 3.7 18547.0 18547.0 18 18C 0.0 3.7 0.0 0.0 18 18S 1519.1 3.7 1519.1 151'9.1 DSIA 18 28979.0 3.7 28979.0 28979.0 VERSION 3.1 AUS 14 1990 TUE;10:34'OHENTARY DUTY 1.64F!E/X I.btF2IE/X 78206.4 78206.4 29675.3 29675.3 0.0 0.0 2430.5 2430'5 4&366.4 463&6,4

~r POMER TECHHDLOBIES IN'OSER SYSTEN SINULATORrPSS/U SIHHA CASE ESCH9DGB, DIESEL lB OH DURING TEST NODE 123 KV 6RID)D81B ONLINE~A AOB B OPEN~~~~CYCLE PARTINS INTERUPTINS DUTY HODE BREAKER TINE E/X X/R Fl E/X F20 E/X 16 0 0.0 56418.3 3.9 56418.3 56418.3 ib SST16 26873.9 3,9 26873.9 26873.9 lb 1D 0.0 3.9 0.0 0.0 16 16C 0.0 3.9 0.0 0.0 16 16S 1750.0 3.9 1750.0 1750.0 16 DSlB 27867.3 3.9 27867.3 27867.3 NONENTARY 1.64FCE/X 90269.3 42998.2 0.0 0.0 2800.0 44587.7 DUTY 1.6!F25E/X 90269.3 42998.2 0.0 0.0 2800.0 44587.7 VERSION AU6,14 1990 TUE, 10:47

~Cl POHER TECHHOLOSIES IHC.PURER SYSTEN SINULATOR.PSS/U SIHHA CASE ESCH9DBB, DIESEL iB OH DURIHS TEST NODE 123 KV BRIDE DSlB OHLIHEs A-AAB-B OPEN~~~~~CYCLE PARTIHS IHTERUPTIHS DUTY NODE BREAKER TINE E/X X/R FS E/X F24 E/X 17 0 0.0 51147.6 3.9 51147.6 51147.6 17 SST17 18422.'9 3.9 18422.9 18422.9 17 17C 2522.1 3.9 2522.1 2522.1 17 17S 1514.1 3.9 1514.1 1514.1 DS1B 17 28939.1 3.9 2B939.1 2B939.1 VERSIOH 3.1 AUS 14 1990 TUE, 10:48 NONEHTARY DUTY 1 64FOE/X 1.64F24E/X 81836,2 81836.2 29476.6 29476.6 4035.3 4035.3 2422.6 2422'6 46302.5 46302.5 a a