为评估水电厂参与市场竞价时的市场势力问题,建立了多时段市场模拟模型,模型由动态规划法求解,各时段各状态下的决策为多厂商博弈的均衡点,各均衡点由迭代算法求解。通过比较分散调度与统一调度下计算结果的方法评估市场势力。算例表明,从中长期看,水电厂分散调度比统一调度电价更高且波动性大,采取双边合同可明显降低实时电价、减弱水电厂的市场势力。 To evaluate the market power of hydropower plants participating in market bidding, a multi-period market simulation model is established. The model is solved by the dynamic programming method. The decision-making under each state in each period is the equilibrium point of the multivariate game. The equilibrium points are solved by the iterative algorithm . Evaluate market power by comparing the results of decentralized and unified operations. The example shows that in the medium and long term, decentralized hydropower plants have higher and more volatile prices than the unified dispatch tariffs, and bilateral contracts can significantly reduce the real-time electricity prices and weaken the market power of hydropower plants.