Abstract:
In order to solve the problems of weak bidding ability and difficult market accommodation in high proportion wind power market,a bi-level Stackelberg game model of high proportion wind power coupled hydrogen energy storage system participating in spot market bidding is proposed. Firstly,the internal energy conversion relationship of the wind-hydrogen coupling system is studied,and the energy“time-space translation”mechanism of the wind-hydrogen coupling system is revealed. Considering the benefits of the windhydrogen coupling system and the cost of wind curtailment,the wind power bidding and hydrogen energy storage charging and discharging decision models are established. Secondly,taking into account the interests of wind-hydrogen coupling system and independent system operators,a market clearing model with thermal power units and wind-hydrogen coupling system as the main body is established based on Stackelberg game. Finally,aiming at the difficulty of solving the two-layer model,the KKT(Karush-Kuhu-Tucker)condition and strong duality theory are used to transform the bi-level model into a single-level mixed integer programming model which is easy to be solved. The simulation results show that the proposed strategy has played a positive role in the market consumption of high proportion of wind power.