变速抽蓄参与电能量-调频-爬坡联合市场博弈出清方法OA

As a future trend in developing pumped storage,its variable speed operation features fast two-way responses and betters its regulation performance.However,under the current market arrangements,fragmented pricing signals and decoupled bidding decisions across the power markets constrain the revenue potential of a variable-speed pumped storage plant(VSPS).This paper describes a game-based approach for the clearing of a VSPS plant that participates in the coupled electricity-frequency regulation-ramping markets.A Stackelberg bi-level model is formulated,where,at the upper level,the VSPS plant acts as the leader and maximizes its profit by submitting its price-quantity offers to each market,while at the lower level,the joint market operator minimizes the total system operating cost and clears market prices and awarded quantities.The bi-level model is reformulated as a single-level optimization model via the Karush-Kuhn-Tucker conditions,using the McCormick envelopes to linearize the bilinear revenue terms.Case studies show that,in multi-product trading settings,our new approach reduces system operating costs effectively,and reveals and quantifies the flexibility value of VSPS in ancillary services,increasing the plant revenues significantly.