UNIT NO. 2 · t. s index page no. 1.0 purpose 1 2.0 summary of results 2 2.1 sat steady state 2 2.2 circulating water pump start 3 2.3 circulating water pump run 4 2.4 screen wash

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REPORT ON

SITE TEST VOLTAGE STUDY

FOR -

CAROLINA POWER & LIGHT COMPANY

BRUNSUICK STEAM ELECTRIC PLANr

UNIT NO. 2

E

UNITED ENGINEERS & CONSTRUCTORS INC.

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UE&C Job Order No. 9527-089

Date: February 20, 1981

Prepared: wh3N'

/K. D'Souza

Approved: N- -

C. D. Greiman

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INDEX

Page No.

1.0 PURPOSE 1

2.0 SUMMARY OF RESULTS 2

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 ANDSCREEN 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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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

134 4060 4043E4 -

2D 7.68 1092 4060 4043

205 4060 4043E3 -

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

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2.2 CIRCULATING WATER PUMP START


LOAD CURRENI VOLTAGE VOLTAGE-

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BUS NAME MW AMPS VOLTS VOLTS.

2B 3.43 570 4095 4191

2C 3.79 651 3840 3876

128 3845 3876E4 -

2D 13.76 2079 3840 3876

175 3840 3876E3 -

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

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2.3 CIRCULATING WATER PUMP RUN


LOAD CURRENT VOLTAGE VOLTAGE


2B 3.46 588 4130 4199

2C 4.0 672 4000 4060

134 4000 4060E4 -

2D 8.9 1344 4000 4060

204 3990 4060E3 *-

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

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2.4 SCREEN WASH PUMP 2B START


LOAD CURRENT VOLTAGE VOLTAGE

fBUS NAME MW AMPS VOLTS VOLTS

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2B 3.46 588 4130 4191

2C 4.54 840 3980 3952

286 3983 3952E4 -

2D 8.8 1365 3980 3952

202 3962 3952E3 -

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

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2.5 CIRCULATING WATER PUMP AND SCREEN WASH PUMP 2B RUN

TEST | TEST TEST STUDY

LOAD I CURRENE VOLTAGE VOLTAGE


2B 3.46 588 4130 4197

2C 4.10 731 4025 4026

164 4020 4026E4 -

2D 8.9 1365 4025 4026

205 4025 4026E3 -

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

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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 Butidingt

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All the transformer tolerances, cable impedances, running and starting loads

were considered.

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|I4.0 METHOD OF ANALYSIS

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

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6.0 DATA

6.1 SPECIFICATIONS

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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

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APPENDIX


FOR

CAROLINA POWER & LIGHT COMPANY

BRUNSWICK STEAM ELF.CTRIC PLANT

UNIT NO. 2

ElUNITED ENGINEERS & CONSTRUCTORS INC,

VOLTAGES

AND

IMPEDANCE DIAGRAMS

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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 Motor Control Center 2PB 1.0059 483

N0fE: All voltages are on the base voltage shown in theleft-hand column

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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 2F O.9288 446'




NOIE: All the voltages are on the base voltage shown in theleft-hand column

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SAT

CIRCULATING WATER PUMP RUN

STUDY 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



1.0159 488480V Motor Control Center 2PB '

NOIE: All the voltages are on the base voltage shown in theleft-hand column

A4

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SAT I

SCREEN WASH PUMP 2B START

STUDY 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 2F 0.9509 456 j

480V Unit Substation E7 0.9691 465,


480V Motor Control Center 2FB 0.8361 401

NOTE: All the voltages are on the base voltaEe shown in theleft-hand column

A5

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SAT

CWP AND SCREEN WASH PUMP 2B RUN

STUDY 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 Uni' " tbstation 2F 0.9689 465



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A6

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g5

gN,iEpB

(o691

5204

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7J B 4 4:

7+ 2 279;

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=35 +

b7 7

30

D lY =S 1 1

Z 22,

V, ,2 8,

0. 4K

0 = M3 6 323 E+ 57 6 S 7 7 YA2

, 25 97 2 5B R, ,,

6 32 8 8P Q D3U9. 4 6 222 22 AE.

I T: 74 D TSS +J 23 0 0

=d E =AZ+ T EA; -

+0 0 ES GTP; - ,

AA.

: C T DSj M YL+ A DO@

BD A VT7 5 SE9 ET7 3 P TS E8

.4F 3 9 TMSEj 2 649 TI

Z+e , o .:

= ESj T T+ A I

SS7 36 828 6E 6 B.4

B d 2 9 0,2+ 1

,- y65N

O 6 1

M = 3M 5 +O 9 39C 5

, 1 64 9. 4 7E 63 E 733 ;2+ p9lE, 5 E; '

. .D = j2, StC2

2

b 3'3

1

5j+

>u

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23o6V SYD hf,

E=5.0377

'@,; :. ,,

E = 0. 0 2.16+j . 4 5%

@ . 2a

P

S = 3.43+3 2. l't*)9

h 2C,2D COMMOM B>m ,, , --

;; ,, -,

2 = .9159 ?=.82G7 Y: 697B Z:.9325 7. 1966+3 4.693 .. . +d 4.603 +3 +.7 5 og h h N 4.(,57 Ogo ,+J e ?6 3 8g_o_El o- 2 E ---o LF -4 EB V, S= l8.06'

-

'' CwP 2B 4J 3.0969e o " tj . 347. "

s=.556 65 60FJG ' S* 63Y: o.oi4+3.4704 +3.9378 43 89 31 g ,] ",gf7f -J ,106

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v

Ss.oo65+J.00582

SAT |MPEDAMCE DIAGRAMCIRCULATIMQ WATER PUMP START

SITE TEST VOLTAGE. STUDY'

TEST DATAFIG. A2.BEM 3

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230 KV SYD @

Z J.O377@

;; : '

2 = 0 . 0 2 |t.o*

tt.4596

-@ 2B-

Z: 0.0221 '

+ 3 . 4 821 g, ,44

+J 2.'59l5

h 2C.2D, CoMMoM B cwP 26,e , ,,o_ __ <> :;- ,, ,,

2 = .9159 Er.BtGT 2 .8978 Z=.9325 e+U 4 683+J 4.693 g g + j 4.75 @ hi 4.657 g , i3,4 3

-o- c.7 ---o--2E --ar2F --o- EB tj 5.16 046 396y y e !

S = . 54 9 s = . 4696 S=.63 * ''

+d . 5 372 +J 9378 +s.9874 h Ji 2. BM1. 2-2.3273

,,

vS m .0077.

+3.co4(

SAT IMPEDANCE DIM, RAMclRCULATINf3 WATER POMP RUN

SITE TEST VOLTAGE STODYTEST DATA FIG. A3

BEN 4

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||

230 KV SYD:,

Z=do.o377

a c"

| E = 0. 0 2.21 E, .o 116l 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=.9326tJ 4.693 td 4.663 +j 4.75 +3 4. 659 4

Sr 13.37HH E7 -o-. 2 E -<r 2F EB +3 7.2.534

,

" P P S=.5976S = . 5 4 ?> s = . GG9 6 s. 43 +d 1.3316+3 52B3 +3 .904 5 +j . 859B E=2.B173

2PB +31. 8571S .o4s6o

N o.osol

z = 1.9094scWP 2B +J i.4 ol'1

PSAT MPEDAMCE DIACRAM1Y=.OO29SCREEN WASH PUMP 2B START

FIG A4,

SITE TEST VOLTACiE STupy -J.0117 i

TEST DATA BEN 2.

.

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b , 23oXV SYD

Z 3.0377AlbO V

,,. , .

,, , ,

2 = . o 2 2.1 7'- l'b.

+3.4821 *d**

b 28 4l60V,.,

V

5 = 3.%+3 ?. 3917

c.W.P. to@ 2C * 2 D, Cot 4 Mod 6b 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 ES,

+ 6525=.5364" " Y.

+3 . 2927$ = . Ec)4 S = .% 67. Er.63+3 . 4 872. +3.B604 +J . B >31 gg [f2.sds

'

e

S= . lob+3.o762

SAT iM PE D AMCE DIAQRAMCWP + SCREENWASH PUMP 2B ROMSITE . TEST VOLTAGE STUDY

TEST DATA FlQ.A5BEN |

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APPENDIX

SAT STEADY STATE

INSTRUMEtrfATION ERROR CAIEULATIONS

4160V BUS 2B (Ref. Fig. A6)

lINSTRUMENI MAXIMUM ML N

NAMES VOLTAGE 7. ERROR VOLTAGE VOLTAGE

Potential + 0.6 4154.78Transformer - 0.6 4105.22

RMS Level + 1.0 4196.324154.78

Converter - 1.0 4113.23

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+ 1.0 4146.274105.22 - 1.0 4064.17

2800 Brush + 0.35 4211 *4196.32Recorder - 0.35 4181.63

+ 0.35 4127.624113.23 - 0.35 4098.83

+ 0.35 4160.784146.27 - 0.35 4131.76

+ 0.35 4078.394064.17 - 0.35 4049.95 *

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*The maximum and minimum voltages which could be recorded taking into account

instrumentation error

A12 |

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

RMS LEVEL>: : CoMVERTER 2.800 BROSHt; VOLTAGE

f 120VAc 5V Dc RECORDERINPOT 41&ovAC roll SCALE

ouT PUT

SITE TLST VOLTA 4E STOPYS AT STE ADY STATE.

TEST DATA

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FlG. A G

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Documents

UNIT NO. 2 · t. s index page no. 1.0 purpose 1 2.0 summary of results 2 2.1 sat steady state 2 2.2 circulating water pump start 3 2.3 circulating water pump run 4 2.4 screen wash