nepool reliability committee meeting westborough, ma september 10, 2002 agenda item #3

NEPOOL Reliability Committee Meeting

Westborough, MA

September 10, 2002

Agenda Item #3RC Mtg. 9/10/02

Stephen G. WhitleySenior Vice President & COO

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• System Operations

• Energy & Congestion Uplift

• Load Response Update

• SW CT Update

• RTEP Projects Update

• Back-up Detail

Discussion Points

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ISO Summer Operations

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Summer Operations Highlights

• Boston & Hartford Weather Pattern: – June temperatures were average with

above normal precipitation– July & August temperatures were above

normal with below normal precipitation. • Twenty-six week days during the period with

temperatures 90 degrees or above

• Peak Load – June - 23,152 MW, 6/27/02, HE 16– July - 25,008 MW, 7/23/02, HE 15– August - 25,715 MW, 8/14/02, HE 15

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Summer Operations Highlights

• M/S#2 Implementation: -- June - 1 day– July - 5 days– August - 7 days

• OP #4 Implementation– June - 6/26, Actions 1 & 11– July - 7/23, Actions 1 & 11– August - 8/5, 8/13, Actions 1 &11

8/14, 8/19 Actions 1 thru 11

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Summer Operations Highlights

• Provided shared activation of reserves (SAR) -- June - 3 times– July - 9 times – August - 0 times

• Called for shared activation of reserves (SAR) -- June - 2 times– July - 2 times– August - 0 times

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August 14, 2002 – OP# 4 day

Forecast 24,575 MW, HE 17 Reserve sharing available Morning Report Surplus 700

MW OP #4 actions not forecasted

Actual peak 25,715 MW, HE 15 New all time peak

OP #4 implemented (except in Maine)

Actions 1 & 11 13:37 to 16:30

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REMVEC SummerOperations

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•Peak load of 13604 MW on August 14, 3.15% increase over 2001.

•Load exceeded 12000 MW on 18 days.

•REMVEC declared M/S#2 for eastern Massachusetts on 3 occasions.

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•Fire hoses used to lower operating temperatures on transformers at Ward Hill and Sandy Pond.

•Voltage improvements over past year paid off as only problems were in NE Massachusetts.

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•August 21 loss of 339, 349 and Golden Hills bus due to a transformer fault resulted in M/S#2 in Eastern Massachusetts.

•August 27 loss of 339, 349 and Golden Hills bus due to a ground on 349X M/S#2 in Eastern Massachusetts.

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Generation changes

• New Boston 1 retired July1

• Block 8 at Mystic delayed until September.

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New Hampshire SummerOperations

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•Set new load peak twice in July, 3 times in August.

•Peak load on August 14th of 1953 MW was 126 MW higher than 2001.

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•High temperatures on Scobie Pond Transformer August 13-15th for the first time eve.

•Special measures implemented to cool transformer.

•PSNH prepared to shed up to 150MW on loss of Scobie Transformer to protect Deerfield auto.

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August 19th Scobie Auto event

•Trip caused by bird on 13.8kv terminal.

•OOS 0713-1810

•Caused temporary load interruption.

•PSNH opened 115kv to Mass & Western NH.

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Generation Changes

• CONED Newington testing aggravates Seabrook South interface.

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Maine SummerOperations

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•August 14 Maine Peak load of 1541 MW.

• All instances of OP#4 in New England exclude Maine due to congestion.

• Congestion an everyday occurrence in Maine.

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Significant Events• June 5 – Bucksport over current SPS operation opened 115kv lines & tripped Bucksport & Independence generators.• July 1 – Mason Cap bank lightning arrestor failure.

No major voltage problems experienced.

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CONVEX SummerOperations

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• CONVEX peak load of 8028 MW & Connecticut peak load of 6861 MW occurred on July 3. These are both slightly less than the 2001 peaks.

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NPCC Summer Operations

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Level 1 EEAs for July & August

• IMO 13

• PJM 15

• NYISO 2

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Level 2 EEAs for July & August

• IMO 7

• PJM 2

• NYISO 1

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Hydro Quebec & Maritimes experienced no significant problems.