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SCENARIO 2 PRESENTATION 345KV ALTERNATIVES

SCENARIO 2 PRESENTATION 345KV ALTERNATIVES. ROBERT LONA SENIOR CONSULTANT ERCOT SYSTEM PLANNING. OBJECTIVES. REDUCE OVERALL WIND CURTAILMENT (NEW /EXISTING) TO 2% OR BELOW DEVELOP 345KV TRANSMISSION ALTERNATIVES ONLY

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SCENARIO 2 PRESENTATION 345KV ALTERNATIVES

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  1. SCENARIO 2 PRESENTATION345KV ALTERNATIVES ROBERT LONA SENIOR CONSULTANT ERCOT SYSTEM PLANNING

  2. OBJECTIVES • REDUCE OVERALL WIND CURTAILMENT (NEW /EXISTING) TO 2% OR BELOW • DEVELOP 345KV TRANSMISSION ALTERNATIVES ONLY • ALTERNATIVES INCLUDE NEW 345KV TRANSMISSION AND UTILIZATON OF EXISTING TRANSMISSION • UTILIZE SUGGESTED ALTERNATIVES PROVIDED BY TDSP’S

  3. PARAMETER ASSUMPTIONS • UTILIZE LINE PARAMETERS AGREED UPON BY TDSP’S • UTILIZE 3000 MVA LINES RATE A, RATE B • STANDARD 3000 MVA PER MILE LINE IMPEDANCES • SERIES LINE COMPENSATION FOR 345KV LINES > 100 MILES • UTILIZED 800 MVA 345KV AUTOS

  4. PARAMETER ASSUMPTIONS(continued) N-1 SECURE $ 7.0 GAS PRICE 6,903 MW OF BASE WIND WIND 11,552 MW NEW WIND PANHANDLE A , B 5,584 MW NEW WIND CENTRAL 4,110 MW NEW WIND MCCAMEY 1,858 MW NEW WIND ECONOMICS OF NEW TRANSMISSION NOT ANALYZED AT THIS TIME UPLAN DC ANALYSIS ONLY AC ANALYSIS TO FOLLOW

  5. INITIAL PROBLEMS ENCOUNTERED WATER ANALOGY LINE CONGESTION IN DFW AREA DUE TO LARGE AMOUNT OF WIND POWER IN PANHANDLE AREA NEED MULTIPLE DROP POINTS INTODFW AREA DFW AREA CONGESTION REDUCED WITH ADDITIONAL DROP POINTS INTO CENTERPOINT AREA MAJORITY OF WIND CURTAILMENT IN CENTRAL CREZ AREA

  6. PANHANDLE CREZ ZONE NEW TRANSMISSION PAMPA AMARILLO CHILDRESS LK PAUL OKLAUNION TUCO MATADOR SPUR CLEAR CROSSING TO CEDAR BAYOU

  7. DFW AREA NEW TRANSMISSION TO MATADOR TO CEDAR BAYOU TO OKLAUNION SPRING TO BOWMAN JAXSBRO KRUM ARGYLE PERCH HILL LEWISVL W.DENTN WILLOW CRK ROANOKE PARKER HICKS CRLTN NW EAGLEMT ALLIANCE

  8. MCCAMEY / CENTRAL CREZ ZONE NEW TRANSMISSION SNYDER LAMESA LEON STEVNVL BIG SP MRGN CRK COMPK BOSQUE BLUFF CRK MIDLAND COMSW ODESSA SARDCRK TEMPPC BIG LK CRANE KILLEEN MCCAMEY LAMPASAS TWIN BUTTES RIO PECOS WESTGATE FT.LAN SONORA GILLESPIE KENDALL ROCK SPRNGS

  9. TOTAL NEW CREZ TRANSMISSION

  10. TOP 20 CONGESTED CIRCUIT ELEMENTS

  11. NEW TRANSMISSION BY CREZ ZONES • PANHANDLE 24 – 345KV LINES 5 – 345/138KV AUTOS • MCCAMEY 20 – 345KV CIRCUITS 7 – 345/138KV AUTOS • CENTRAL 9 – 345KV CIRCUITS 0 – 345/138KV AUTOS TOTAL 345KV LINES = 53 TOTAL 345/138KV AUTOS = 12 TOTAL CIRCUIT MILES = 2,936

  12. ALTERNATIVES TO REDUCING WIND CURTAILMENT RECONFIGURE EXISTING WIND TO HIGHER VOLTAGE LEVEL BUILD NEW TRANSMMISION TO RELIEVE CONGESTED ELEMENT/S MODIFY EXISTING TRANSMISSION TO RELIEVE CONGESTED ELEMENT/S MINIMIZE DROP POINTS OF NEW WIND POWER

  13. NEXT STEPS FINALIZE 345KV SOLUTION OR SOLUTIONS FOR SCENARIO 2 DEVELOP TRANSMISSION ALTERNATIVES TO LOWER CURTAILMENT FOR CENTRAL WIND UNITS

  14. QUESTIONS?

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