考虑需求侧竞价的发电公司竞价策略分析

采用微观经济学理论研究了单边开放的电力市场模式中考虑需求侧竞价的发电公司竞价策略问题。运用经济学理论中的供给函数均衡模型建立考虑需求侧竞价的发电侧竞价策略模型,运用连续函数极值原理分析得到发电公司的优化报价策略,结果表明发电公司的优化报价策略是报价高于边际成本,需求侧竞价的存在可有效地降低发电公司的报价;论证了需求侧竞价情况下市场均衡解存在且唯一,并得到了均衡解和市场力之间的函数表达式;最后分析了长期和约对均衡解的影响,发现长期和约可降低发电公司的市场力。

Analysis of power generation enterprise bidding strategies considering demand-side bidding

With the microeconomics theory and the consideration of DSB(Demand-Side Bidding),the bidding strategies for power generation enterprise in unilateral open electricity market are studied.With supply function equilibrium model,the bidding strategy model for power generation enterprise is presented.With the continuous function maximum principle,the optimal bidding strategies for power generation enterprises can be found and results show that,the optimal bidding strategy is giving higher price than marginal cost,while DSB may lower the price.It is proved that,the market equilibrium solution exists uniquely when DSB is considered,and the relationship between equilibrium solution and market power is presented.The influence of long-term contract on equilibrium solution is analyzed,which shows that long-term contract may reduce its market power.