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电力市场改革过程中,市场力和市场效率问题是影响改革效果的两个重要方面。输电阻塞的存在阻碍了区域间电能的有效传输,使得电力资源无法得到最优化配置,进一步影响发电商的市场力和电力市场效率。本文运用节点价格偏移指数和利润偏移指数指标,研究了输电阻塞对发电商市场力的影响,以及发电商基于输电阻塞的策略性竞价;运用福利损失率等经济学指标对输电阻塞下的电力市场效率进行了分析。采用MATPOWER软件包在MATLAB平台上对IEEE30节点系统进行了模拟,定量分析了输电阻塞和发电商策略性竞价对市场效率和市场力造成的影响。
In the electricity market reform process, the issue of market power and market efficiency are two important aspects that affect the effectiveness of the reform. The existence of transmission congestion hinders the effective transmission of electric energy between regions, so that the optimal allocation of power resources can not be obtained, which further affects the market power and the electricity market efficiency of power suppliers. In this paper, the influence of transmission congestion on the market power of generators and the bidding of generators based on transmission congestion are studied by using the index of node price deviation and profit deviation index, and the economic performance of power suppliers, such as transmission congestion, Power market efficiency is analyzed. The MAT30OWER software package is used to simulate the IEEE30 node system on the MATLAB platform to quantitatively analyze the impact of transmission congestion and the bidding strategy of power suppliers on market efficiency and market power.