ML17342A924

Summary of Util 870902 Presentation Entitled, Florida Power & Light Transmission Sys Reliability Review, in Bethesda,Md.List of Attendees & Viewgraphs Encl

ML17342A924
Person / Time
Site:	Saint Lucie, Turkey Point, 05000000
Issue date:	09/18/1987
From:	Tourigny E Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8709290527
Download: ML17342A924 (35)

Text

eptember 18, 1987 Docket Nos. 50-250, 50-251, 50-335 and 50-389 INTRODUCTION DISTRIBUTION NRC 5 Local PDRs PD22 Reading LICENSEE:

Florida Power and Light Company (FP8L) H. Berkow E. Tourigny FACILITY: Turkey Point and St. Lucie Plants D. Miller OGC-Bethesda

SUMMARY

OF SEPTEMBER 2, 1987 PRESENTATION BY FPImtL COMPANY ENTITLED, "FPSL TRANSMISSION SYSTEM RELIABILITYREYIEM" E. Jordan J. Partlow ACRS (10)

B. Troskoski D. McDonald D. Tondi F.

Rosa J. Knight S.

Saba The licensee was requested by the NRC St. Lucie Plant Project Manager to update the staff as to the current status of FPSL's bulk electrical transmission system.

The licensee agreed and gave a presentation on September 2,

1987 in

Bethesda, MD.

Enclosure I contains the list of attendees.

Enclosure 2

illustrates an overview of topics covered.

'I

SUMMARY

Mr. R. L. Taylor, Director of Power Supply, FP8L Company, gave the presentation.

A copy of his view-graphs is contained in Enclosure 3.

The reliability of the bulk power electric system has significantly. improved over the last few years.

This can be attributed to the addition of 500kv transmission lines throughout most of the state, interconnection of the 500kv transmission lines with the eastern U.S. grid, the adoption of special protection schemes to deal with in-stability conditions and stable but overloaded conditions, and the utilization of long-scale computer facilities that, among other things, analyze real time power flow.

The staff expressed its appreciation for the special presentation.

E.

G. Tourigny, Project Manager Project Directorate II-2 Division of Reactor Projects-I/II

Enclosures:

As stated CC w/enclosures:

See next page L

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Mr. C. 0.

Woody Florida Power

& Light Company St. Lucie Plant CC:

Mr. Jack Shreve Office of the Public Counsel Room 4, Holland Building Tallahassee, Florida 32304 Resident Inspector c/o U.S.

NRC 7585 S.

Hwy A1A Jensen Beach, Florida 34957 State Planning

& Development Clearinghouse Office of Planning

& Budget Executive Office of the Governor The Capitol Building Tallahassee, Florida 32301 Harold F. Reis, Esq.

Newman

& Holtzinger 1615 L Street, N.W.

Washington, DC 20036'orman A. Coll, Esq.

McCarthy, Steel, Hector and Davis 14th Floor, First National Bank Building Miami, Florida 33131 Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Mr. Weldon B. Lewis, County Administrator St. Lucie County 2300 Yirginia Avenue, Room 104 Fort Pierce, Florida 33450 Mr. Char les B. Brinkman, Manager Washington - Nuclear Operations Combustion Engineering, Inc.

7910 Woodmont Avenue

Bethesda, Maryland 20814 Jacob Daniel Nash Office of Radiation Control Department of'ealth and Rehabilitative Services 1317 Winewood Blvd.

Tallahassee, Florida 32399-0700 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Executive Director for Operations 101 Marietta Street N.W., Suite 2900 Atlanta, Georgia 30323

Mr. C. 0.

Woody Florida Power and Light Company Turkey Point Plant cc:.

Harold F. Reis, Esquire Newman and Holtzinger, P.C.

1615 L Street, N.W.

Washington, DC 20036 Mr. Jack Shreve Office of the Public Counsel Room 4, Holland Building Tallahassee, Florida 32304 Norman A. Coll, Esquire

Steel, Hector and Davis 4000 Southeast Financial Center Miami, Florida 33131-2398 Mr. C.

M. Wethy, Vice President Turkey Point Nuclear Plant Florida Power and Light Company P.O.

Box 029100 Miami, Florida 33102 Mr. M. R. Stierheim County Manager of Metropolitan Dade County Miami, Florida 33130 Resident Inspector U.S. Nuclear Regulatory Commission Turkey Point Nuclear Generating Station Post Office Box 57-1185 Miami, Florida 33257-1l85 Jacob Daniel Nash Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.

Tallahassee, Florida 32399-0700 Intergovernmental Coordination and Review Office of Planning 5 Budget Executive Office of the Governor The Capitol Building Tallahassee, Florida 32301 Administrator Department of Environmental Regul ation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Regional Administrator, Region II U.S. Nuclear Regulatory Coamission Suite 2900 101 Marietta Street Atlanta, Georgia 30323 Martin H. Hodder, Esquire 1131 NE, 86th Street Miami, Florida 33138 Joette Lorion 7269 SW, 54 Avenue Miami, Florida 33143 Mr. Chris J. Baker, Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company P.O.

Box 029100 Miami, Florida 33102 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304

ENCLOSURE 1

FPAL TRANSMISSION SYSTEM RELIABILITYREVIEW September 2,

1987 NAME E. Tourigny H. Berkow D. Tondi F.

Rosa J. Knight D. McDonald S.

N. Saba G. J. Kelker E. J.

Weinkam R. L. Taylor AFFILIATION NRC/PM St.. Lucie Prospect Director PDII-2 NRR/DEST:SELB NRR/DEST:SELB NRR/DEST:SELB NRC/PM Turkey Point NRC/DEST:SELB FPAL/Engineering FP8L/Nuclear Licensing FP&L/Director of Power Supply

"'(, 27 '87 88I5P 881 FPL-GO T

TR P.82 ENCLOSURE 2

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~ I FPL TRANQGSSZON BYSTEM RELZABZLZTY REVZEM 3 ~

4, 5 ~

Description of FPL System Definitions a.

Reliability b.

Adequacy c.

Security Interconnection Systems Security Transmission Re 1 iab 1i1ity a.

Security hnalysis Special Protection Schemes a.

Instability b.

Stable But Overloaded'.

Overload Curves - 1431 KCHIL 7.

Voltage Collapse 8.

Electrical Disturbance Nuclear Plant 9.

Instability Protection lb.

Stable But Overloaded Protection 11.

Computer Operated Load-Shedding Scheme 12.

Poinsett-North Corridor 1055 13.

Action Following Initiation of Trip 14.

Loss of Generation Matrix 15.

Special Case Analysis 16.

Expected Peak 17.

Broward-Dade County Transmission 18.

Transmission Lines Loading 19.

Minimum brea Generation Table 20 Summary By R. L. Taylor - Director of Power Supply Florida Power 6 Light Company

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ENCLOSURE 3

FPL TRANSMISSION SYSTEM RELIABILITYREVIEW by R. L. TAYLOR DIRECTOR -

POWER SUPPLY September 2,

1987

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DUVAL FT. p WHITE RICE CRYSTAL

/IVER bROOKRIDGE LAQE TARH CEHTRAL FLORIDA

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fOINSETT fp/75/87 KATHLEEN

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Crewel MIDWAY MARTIN 1987

'TATE OF FLORIQA 500 kV TRANSMISSION SYSTEM

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ORANOE RIVER ANDYTOWH LEVEE Vlya

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RELIABILITY, in a

bulk power electric

system, is the degree to which the performance of the elements of that system results in power being delivered to consumers within accepted-standards and in the amount desired.

ADE(DUACY is the ability of.

the bulk power electric system to supply the aggregate electric power and energy requirements of the consumers at all times, taking into account scheduled and unscheduled outages of system components.

SECURITY is the ability of the bulk power electric system to withstand sudden disturbances such as electric short circuits or unanticipated loss of system components.

INTERCONNECTED SYSTEMS SECURITY The interconnected systems shall be operated at all times so that instability, uncontrolled separation, or cascading outages will not occur as a result of the most severe single contingency.

Multiple outages of a

credible nature shall also be examined

and, when practical, the systems shall be operated to protect against instability, uncontrolled separation or cascading outages resulting from these multiple outages.

TRANSMISSION RELIABILITY Assure that recovery from the more probable contingencies can be achieved without significant effect on customer service.

Assure that the more

severe, less probable contingencies (which include combinations of components outages) will not result in loss of synchronous operation, cascading outages or the unintentional interruption of a

large amount of customer load.

- Provide sufficient flexibility to allow for reliable operation during maintenance or repair.

Insure prompt restoration to normal operation following more

severe, less probable disturbances.

Securi ty Dispatch SD Period ic Trigger (every minutes)

Bus Load Forecast BF Event Trigger Network Configuratlo ll I

II'uAD I

(COC 1734)

I I'tate Estlnator SE External.

Node 1 EX Real Tim s sequence (RTS)

Security Analysis Sequence

)le tvark Sens l tivity NS Penal ty Factors PF I

I I

nL'AD (COC 1734)

I Security Analysis I

I I

I I

I I

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Figure 3.

Advance Applications and Security Anolysis Sequence

SPECIAL PROTECTION SCHEMES INSTABILITY RESULTS IN GENERATION UNITS PULLING OUT-OF-STEP WITH THE POWER SYSTEM STABLE BUT OVERLOADED RESULTS IN EXTREMELY LOW VOLTAGE THAT EVENTUALLY CAUSES COLLAPSE OF THE SYSTEM

2300 OVERLOAD CURVES FOR:

1431 KCMIL45/7 ACSR/AZ 5 rnlnufe curve 2200 2100 2000 1900 1800 1700 U

C5 C) 1600 1500 15 minute curve 10 minufe curve WO0 1300 onfinuous Ampacify=1285 Arnperes 1200 300 400 500 600 700 800 900 1000 1100 1200 PRE DlSTURBANCE LOAD !N AMPERES TRANSMISSION CONDUCTOR DATA SECTION SHEET OF A-

1

VOLTAGE COLLAPSE 100 90 VOLTAGE X OF NORMAL 0

LOADING

Crid Slectrical DI~ tuxhance Pover Cen ~ xatin9 S iten Plant/Crid Interrace Plant Slectrical Avail i ~ r 1 ~ s Protective Re layin9 I'rotective Re layxn9 Tuxhine Trips Ceneratin9 Trips Vital Dus Trips Non Vital hus Trips Nech. t Slee.

Linits on Operation Turhine C Shalt Cenerator s Reciter Control Systens Instrunent Rover Sul plies

'Iur ine Neactor Xscitst1on Induction Notors Fertornance Nydraulic finite protect io Reactor Trips Feedvater/

Circulatin9 Turhine/Cenerator Condensate Nater Ruxiiiary Trip\\

Trips Trips Figure 3-l.

DePiction of Paths by Which a Grid Electrical Disturbance Hay Affect a Nuclear Power Plant

SPECIAL PROTECTION SCHEMES INSTABILITYPROTECTION k

Scheme A:

Loss of Generation Open the 500 kV and 230 kV interconnection near the state line.

Allow underfrequency relays to shed load.

Uses out-of-step relays on the 500 kV lines at Duval.

Scheme B:

Loss of Duval-Rice 500 kV Corridor Open the 230 kV lines in the Palatka area.

Allow underfrequency relays to shed load.

Uses out"of-step relays on the 230 kV lines near separation points.

Scheme C:

Loss of Rice-Midway 500 kV Corridor Open the 230 kV lines near Palatka area Allo~ underfrequency relays to shed load.

Uses out-of-step relay on the 230 kV lines near separation points.

C Scheme D:

Loss of Poinsett-Martin and Midway-Martin or Martin-Andytown corridors Open 230 kV lines south of Ranch.

Drop load lines in Broward County.

Allow remaining area to utilize underfrequency 'relays to shed load.

Uses out"of-step relay at Ranch and Broward.

SPECIAL PROTECTION SCHEMES STABLE BUT OVERLOADED PROTECTION PALS (Past Acting Load Shedding)

Loss of major 'generation or transmission lines.

Computer programs detect overloads on a number of lines.

Set up substations and transmission line tripping sequence based on magnitude of overload.

No underfrequency occurs.

CPALS (Corridor Pact Acting Load Shedding)

Loss of 500 kV corridor that may not cause instability Computer program detects overloads.

Computer tripping sequence initiated.

No underfrequency occurs.

LOSS OF A SUOKV TRANSMISSION CORRIDOR PROTECTION AGAINST 'STABLE BUT OVERLOAD CONDITIONS'ITH A COMPUTER OPERATED LOAD-SHEDDINGSCHEME

SCC CO ER OPERATED LOAD SHEDDING SCH FOR POINSETT-NORTH CORRIDOR LOSS LEVEL 1 (CORRIDOR STATUS)

POINS PO I NS-DUVAL POINS-RICE MW ( 100 ENTER monitoring stations

'DUVAL RICE DUVAL-POI NS R I CE-POI NS SNF VOL SNF VOL LEVEL 2 (CHECK ON 230kv NETWORK)

VOLTS VOL (230kV) ( 0.85 OR SNF (230kv) 4, 0.87 PUT LINE HW PUT-'VOL ¹1 0'25 OR VOL-PUT ¹2 > 490 AHP 0/L

> 115%

VOLTS VOL (230kV)(0.90 OR SNF (230kV) (0.92 LINE HW PUT"VOL ¹1 0 575 OR VOL-PUT ¹2 ~ 535 AMP 0/L 0'20%

LEVEL 3 (SERIOUS OVE RLOADS )

PUT SEH NET HVAR PN ¹1 OR 2 0'80 OR CC ¹1 OR 2 0'80 OR SH ¹1 OR 2 0'40 VOL LINE AHPS PUT-VOL ¹1Q 1765 OR VOL-PUT ¹2 0'765 OR SEM" PUT

~ 2240 OR RICE-PUT 0'414 r

FE SEH RICE CT ION

DESCRIPTION OF ACTION ON LOSS OF LARGE GENERATION OR A TRANSMISSION CORRIDOR, FREQUENCY EXCURSION BELOW 59.82 HZ FOR 8 CYCLES OR MORE VfLL INITIATETRIPPING OF THE SELECTED FEEDERS.

THIS VILLDECREASE THE SOUTHBOUND POWER FLOV IN THE SYSTEM AND REDUCE LOADINGS ON LINES AND VAR BURDEN ON UNITS.

TOTALTIME OF LOADSHEDDING ACTION RELAYDELAY(8 CY) + AUX.RELAYINGTIME (1 CY) +

BREAKER OPENING TIME (0 CY).

13 CY (AFTER FREQUENCY REACHES 59.82 HZ, WHICH MAYTAKE 1 - 2 SECOND FOLLOWINGTHE EVENT).

INTERIM F. A. l. S. MATRIX FOR EXCESSIVE GENERATION lOSS LEVEL HOLD NO.

TIHE DETECTION OF EXCESSIYE GEN.

LOSS<

1HIN TP83

>HW

>400 (-)

SL81

~w

>400 (-) L MRS 1 MW 0 (-)

FPL"SCNI MM >3450 FLA NI W >4200 DUV-POIN ICE-POI MM >2450 OUV POIN 2

IMIN TP84 Lw

>400 (-)

SL82 LW

>400 (-)

HRA2

> MW

>30D (-)

DITTO DITTO DITTO VERIFICATION OF REACTIVE PROBLEHS 3

NONE DUV 500

<460 KY RICE 50

<475 KV RICE POIN 50

<460 KV POIN MR 5~00

<470 KV ANDY 50 c460 KV 4 Mlf(+)

OUV-POIN

> 325 4

NONE DUV 500

<<44D KV POIN 50

<440 KY POIN ANDY 5 c440 KV HR81 N. MYAR

>530 SL81 N. MVAR

>470 SL82 N. HVAR

>470 monitoring stations 8/7/87

SPECIAL CASE ANALYSIS Event:

August 1986 Loss of Martin Units 1 and 2

(800 MW Each)

Aux. Po~er Modification Turkey Point Unit 4 Concern:

Serving Dade County Load During High System Load Period If.

Andytown-Levee 500KV Was Lost

EXPECTED PEAK WEEK LOAD DURATION 11,000 10,900 10,800 10,700 101600 10,500 10,400

. rn 10,300 10,200 10,100 4J 10,000 9i900 91800 91700 91600 9)500 91400 9i300 10 20 HOURS 30 40 h

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BROWARD " DADE COUNTY TRANSMISSION Andytown Port Everglades Lauderdale Broward Dade A.

Ol O i i

C Gratigny 1381GV A

CO 13810 v 2301cv Dade Miami Shores 2301%V Levee Flagami Little River

5A 130 TRANSMISSION LINES INTO DADE CTY SYSTEM LOAD OF 11,000 MW 120 110 100 90 80 70 60 50 40 20 10 AndytoMnl Levee 500kV Andytownl Fisasmi 230kv Andytownl Osde 230kv Port Evsrglsdasl Lsuderdslel Osde Oretiony 230kv 138kV Lsuderdsiel Littie River 138kv Lsuderde 1 el Hietlli Shores 138kV TRANSMISSION LINE NORMAL 500KV OUT

'TABLE 1 HINDEH REQUIRED AREA GENERATION(HN)

(HARTIN PROBL.

ONLY)

URKEY POlNT SYSTf21 LOAD LEVEL MtlCE (1%)

STATUS 2 (AVAILABLE

)ITS Below 6,500 6f500 7f500 7f500 8f500 8,500 - 10,000 10f500-11,000 2 Fossil 1 Nuclear

~

2 Nuclear 1 Nuclear +

2 Fossil 1 Nuclear +

1 Fossil 750>>

1200>>

500>>

500>>

800>>

1350>>

1800>>

800>>

900>>

1300>>

1850 2000 1&50*

1350*

1450*

1650*

2400 N.A.3 1650 1600 1950 I

Area Generation refers to: FL, PE R RV excluding the generation at T.P.

Assumes TP units at fullcapability.

3 H.A.

NOT acceptable Based on economics there is no generation at MR plant in these cases.

1f generation at Martin is increased by 350 MW the required area generation at (PE + FL + RV) decreases by 100 MW.

4 Ifith 2 Fossil Units at Turkey Point and load level of llBCOOAIiV, loss of Andytovn-Levee 5001:V line vill cause overloads on the order of 40K on certain 138 IcV and 2301:V lines.

SOUTHEAST FLORIDA RELIABILITYSTUDY RECOMMENDATION

~ INITIATEUCENSING OF A NBV 500 kV CORRIDOR MIDWAY-CORBETTCONSERVATION-LEVEE MIDVfAY RTIN CONSERVATlOH AMDYTOVVN

SUMMARY

OPERATIONAL PLANNING Assessment of Next Season

• Special Cases Emergency CURRENT SYSTEM OPERATION

• 'perator Load Plow Studies

• Security Analysis Continuous Monitoring

• Restoration Plan TRAINING

• Simulator "Round Table" Testing

• Certification

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