PJM presented a number of reliability and market efficiency projects to the Transmission Expansion Advisory Committee on Oct. 12, as well as an update to stakeholders on activities with MISO.
PJM reviewed reliability projects, including end-of-life and immediate need, in detail.
Members peppered Mark Sims, manager – Transmission Planning, with questions about the various projects. PJM addressed questions at the meeting and will also route additional questions and responses and information through the online Planning Community and discuss the projects in that forum, as needed.
One of the projects, a baseline project in Dominion, requires scope and cost modifications. Originally, the project in the heavily populated Washington, D.C., suburbs of northern Virginia was a $32 million project involving a 230-kV overhead line along an existing and new right-of-way and new substation.
Problems related to siting difficulty to the degree of rendering the original scope probably infeasible – including proximity to interstate highways and the lack of room for expansion – resulted in PJM’s need to rethink the project (pages 4-6). A possible solution includes a new four-mile 230-kV underground line and a rebuild of the Tysons Substation within its existing footprint. This increases the costs to an estimated $111.7 million. The projected completion time for the new potential scope has been moved to June of 2022.
PJM introduced an equipment assessment in PSE&G under Federal Energy Regulatory Commission Order 715 local criteria. PSE&G assessed the condition of the Roseland to Branchburg to Pleasant Valley 230-kV circuits through visually and physical inspection.
PJM presented three possible solutions, including replacing the existing 230-kV corridor with new structures. The project also supports the load and demand of a neighboring transmission owner. Due to a number of factors, removal without replacement is not a viable option.
PJM presented updates to its interregional projects with MISO.
PJM and MISO are looking at current modeling scope and activities. PJM and MISO in December of 2016 filed joint changes at the Federal Energy Regulatory Commission to create the Targeted Market Efficiency Project.
On October 3, the FERC accepted revisions to the joint operating agreement to create the project. PJM and MISO must make their compliance filings by Nov. 2.
The project analysis found 50 member-to-member flowgates. PJM and MISO looked at 13 upgrades and recommended five, with $59 million in historical congestion (years examined were 2014 and 2015). PJM and MISO anticipate a $99.6 million benefit with a $17.25 million total cost.
PJM gave a presentation on the recently closed 2016-2017 long-term proposal window addendum window, which covered a narrow scope, soliciting proposals to address the Tanners Creek-Dearborn 345-kV thermal constraint, which is a Reliability Pricing Model constraint.
PJM is also conducting an acceleration analysis, which will determine which reliability upgrades, if any, have an economic benefit if accelerated or modified. PJM will look at the 2018 and 2022 set of economic input assumptions used to study impacts of approved RTEP projects.
PJM also presented a generation deactivation update for the Dayton area.