Electricity Market Economic Efficiency Evaluation Theory And Its Application

The significance of the research on economic efficiency of power market lies in providing economic assessment for market operation, providing reference for the market regulation system, thus further improving power market design, achieving the goal of market-oriented reform. This paper bases on the principles of economics and the properties of power system, considers the impact of transmission congestion and expansion and power generation market power and power market regulation for market operation efficiency, uses supply function equilibrium theory to research economic efficiency of power market.First, the paper takes one or two region power system as an example, studies when under the condition of perfect competition and the existence of transmission congestion, the generating set of lower cost can't be dispatched, which has resulted in the loss of market efficiency. At the same time, the paper also studies and produces the question that transmission expansion influences power market efficiency. The adoption of appropriate management tools can encourage Transmission Company to expand effectively, ease congestion, and thereby improve power market efficiency.Second, according to comparing many kinds of equilibrium model, the paper proposes a nonparametric estimate method to estimate the bidding behavior of Generation Company, to verify the validity of power market model.Third, bases on perfect competitive market, the paper studies the influence on power market efficiency for he bidding behavior of Generation Company in concentrated trade model under the circumstances of transmission congestion. This paper establishes the influence model on power market efficiency for transmission congestion, and bases on optimal power flow model, gives a way of searching for congestion lines and Generation Company node which effect market efficiency.Bases on ant colony algorithms, this paper studies and proposes a method of evaluating power market efficiency. Bases on artificial intelligence algorithms, the paper realizes the choice of the bidding strategy of Generation Company, then according to the actual quotation and ideals quotation of Generation Company, uses price-cost margin coefficient to evaluate economic efficiency of power market.Finally, after the study of effect estimation theory of power market, according to SCP theory of industrial economics, the paper studies optimum structure problem of power marketin China, gives a framework of power market standardization in China. Through establishing appropriate power market structure, ensure adequate generating capacity, induct transmission and distribution investment, and improve operating efficiency of power market.The research results of this paper shows that, through objectively and thoroughly researching for theory method and application of economic efficiency evaluation of power market, which is in the environment that power grid and power plants separated and generation and grid companies as independent economic entities participate in power market, uses reasonable evaluation method to evaluate the influence on power market efficiency for market behavior and structure, thus provides reference for market design, improve operating efficiency of power market. These research results have important theoretical and practical value on electric power system reform.