The PJM Interconnection Board of Managers has authorized $1.2bn in upgrades and improvements to the region’s high-voltage electric transmission system including in the transmission zones of Baltimore Gas and Electric (BGE), Delmarva Power, Potomac Electric Power Company (Pepco), PPL (NYSE:PPL) , Public Service Enterprise Group (NYSE:PEG; PSEG), American Electric Power (NYSE:AEP), Dominion (NYSE:D) and FirstEnergy (NYSE:FE) subsidiary Allegheny Power System.
In BGE’s zone, that includes installing a new 230/115-kV transformer at Raphael Road and building a 115-kV line from Raphael Road to Joppatowne at a total cost of $35m, a PJM spokesperson told TransmissionHub on Oct. 3. Another project entails building a new 115-kV underground line between Waugh Chapel and Bestgate at a cost of $27.2m.
BGE is a subsidiary of Exelon (NYSE:EXC).
As for the Pepco Holdings (NYSE:POM) subsidiaries, the board authorized building a new 138-kV line from Piney Grove to Wattsville at a cost of $16.3m in Delmarva Power’s zone, and adding two MVAR reactors at the Dickerson Station H and two 100 MVAR reactors at Brighton 230-kV in Pepco’s zone at a cost of $16m.
The spokesperson also noted that in PPL’s zone, the board authorized rebuilding the Susquehanna – Jenkins 230-kV circuit for $109.5m and rebuilding the Siegfried – Frackville 230-kV circuit at a cost of $84.5m.
In PSEG’s zone, projects include rebuilding four miles of overhead line from Edison – Meadow Rd – Metuchen (Q-1317) for a cost of $46m; installing two 50 MVAR shunt reactors at Stanley Terrace 230-kV for a cost of $15.7m; reconfiguring the Sewaren 230-kV; converting the two 138-kV circuits from Sewaren – Metuchen to 230-kV circuits including Lafayette and the Woodbridge substation; and reconfiguring the Metuchen 230-kV station to accommodate the two converted circuits for a cost of $101m.
In AEP’s zone, projects authorized include reconductoring the AEP portion of the Cloverdale – Lexington 500-kV line for $40m; upgrading the 138-kV line between Harrison and Ross for $40.5m; building a new 69-kV line from Hartford to Keeler; and rebuilding the 34.5-kV lines between Keeler – Sister Lakes and the Glenwood tap switch to 69 kV – about 12 miles.
Other projects include retiring the Glenwood tap switch and building a new Rothadew station; rebuilding the North Delphos to S073 138-kV line and upgrading terminal equipment at a cost of $22.4m; and building a new 138-kV line from the Richlands station to the intersection of the Hales Branch to Grassy Creek 138-kV line for $28m.
In APS’ zone, the projects authorized by the board include installing a 250 MVAR SVC at Squab Hollow 230-kV for $33.5m; reconfiguring the Lake Lynn – Lardin 138-kV circuits for $22.9m; and installing a 230/138-kV transformer at Squab Hollow and looping the Forest – Elko 230-kV line into Squab Hollow and looping the Brookville – Elko 138-kV line into Squab Hollow at a cost of $16.8m.
The spokesperson also said that in Dominion’s zone, projects include building a new 230-kV line from Dooms to Lexington on existing right of way at a cost of $35m, and building a new 230-kV line from Idylwood to Dulles Toll Road for $32m.
PJM said on Oct. 3 that the upgrades and improvements were identified as part of its continuous regional planning process.
“PJM and our members know firsthand that a strong, resilient grid is important to meet the challenging impacts of Mother Nature, such as [Superstorm] Sandy last year, and the ongoing, dramatic shift of generation from coal to natural gas that’s resulted in the closure of many older coal plants,” Terry Boston, PJM’s President and CEO, said in the statement. “PJM’s transmission improvement plan and these new upgrades address these challenges.”
PJM said that with those changes, its regional transmission plan includes more than $24.2bn of transmission additions and upgrades since the board approved the first plan in 2000.
PJM receives proposals for additional black start resources
PJM said on Oct. 4 that it has received responses for more than 50 generating units across its footprint from a request for proposals for generators that can start up without an outside power source and deliver electricity to the grid, or what is known as black start service.
Those resources provide the initial power to the transmission system to restart other generators.
A months-long process of evaluating the proposals is underway as part of PJM’s recently approved system restoration strategy, PJM said, adding that it will compare new proposals with existing resources to determine the best, most cost-effective solutions to ensure the ability to restart the grid.
PJM also said that it will examine the proposals and make selections based on needs, capability of units, location of units and cost. Existing black start generators are expected to continue providing black start service under their current commitment terms unless otherwise notified, PJM said.
“There appears to be a large pool of viable units, both proposed and existing, from which to achieve the most effective balance of black start resources,” Michael Kormos, PJM executive vice president of operations, said in the statement.