发电商不同策略的供应函数均衡分析

电力市场是一个接近寡头垄断的市场,因而市场中的发电商往往会采用策略性投标来获得最大收益.根据联营模式下电力市场的特点,利用供应函数模型来模拟发电商的策略行为,给出了各发电商选择改变不同投标参数报价时的反应函数,通过算例比较研究了多个发电商在改变不同投标参数报价时的纳什均衡策略,结果表明选择改变不同投标参数报价会影响均衡结果.此外,还分析了需求弹性等因素对发电商均衡策略的影响.

Analysis of Supply Function Equilibrium with Different Bidding Strategy of Suppliers

The electricity market is an oligopolistic electricity market. Consequently, the suppliers usually try to gain great profit by developing their best bidding strategy in the electricity market. In this paper, supply function model is employed to simulate bidding strategy of suppliers in power pool. The reaction function of every supplier is achieved when different bidding parameters are selected to maximize profits of suppliers. Some examples are used to study the strategies of Nash equilibrium of suppliers under different bidding parameter. The results show the equilibrium will be affected if different bidding parameter is selected to be the strategy of supplier. The equilibrium strategies of different models under various demand elasticity are also analyzed.