电转气设备与燃气机组的联合竞价策略

Power to gas (P2G) facilities and natural gas generating units (NGGU) provide an alternative for the conversion of energy between a power system and a related natural gas system, hence serving as important components in future multi-energy systems. In the competitive energy markets, bidding strategies of P2G facilities and NGGU are crucial issues to address. For P2G facilities and NGGU, uncertain clearing prices in the electricity market and natural gas market can be modeled by probabilistic distributions or handled by other methods. Given this background, a scenario analysis based method for determining optimal coordinated bidding strategies between P2G facilities and NGGU is developed. First, numerous scenarios are generated based on the probabilistic distribution of market prices employing the well-established Latin hypercube sampling and the number of such generated scenarios is then reduced. Afterwards, the problems of developing optimal bidding strategies for P2G facilities only and optimal coordinated bidding strategies for both P2G facilities and NGGU in the electrical energy and ancillary service markets as well as the natural gas market are addressed. As the coordination of P2G facilities and NGGU is supposed to provide extra profits for both parties than their individual participation, the Sharply value method is employed to reasonably allocate the overall profits of the P2G-NGGU union between both parties. Finally, an example is employed to illustrate the models developed and the solving method used, with the characteristics of the bidding strategies for both P2G facilities and NGGU analyzed. © 2017 Automation of Electric Power Systems Press.