Supporting Mechanism For Wind Power Marketization And Corresponding Bidding Model

In 2006,Renewable Energy Law was executed officially.With support of all-round favorable policies such as price,tax,investment,etc.,wind power has developed extensively.Up to the end of 2020,installed capacity of wind power has reached 280 million kW in China.With the rapid progress of wind power generation technology,cost of wind power tends to decline gradually,feed-in tariff for wind power generation has converged to which for thermal power in regions with excellent wind resources,low construction costs and good investment and market condition.With the continuous advancement of power market reform,in order to promote wind power industry to get rid of its swaddling cradle,develop healthfully and compete fairly,cancel government subsidies gradually,it has become an inevitable trend to promote wind power into the market.Marketization of wind power will promote the industry to speed up the survival of the fittest and industrial upgrading driven by interests.The enthusiasm of wind power enterprises will be fully mobilized,and the current situation of wind power consumption completely dominated by the power grid.Explicit subsidies will be converted into market premium to effectively relieve the financial pressure of the government.However,the volatility and randomness of wind power has weakened its market competitiveness naturally,therefore,more complete supporting mechanism is in need for pushing wind power into the market.According to this,firstly,a set of market-based supporting mechanism for wind power has been designed in this paper.It takes bilateral quota system as policy guarantee,green certificates trading as premium channel,coordinates medium-and-long-term and spot trading,as well as physical and financial tools.Secondly,under the supporting mechanism,type and time sequence of markets which wind power enterprises participate in is studied,and interaction between wind power enterprises and other participants is sorted out.Based on which,a multi-market transaction model of wind power enterprises is established.Thirdly,considering of market conditions,forecasting error and risk preference of wind power enterprises,a market competition model of wind power enterprises under supporting mechanism proposed.For this model,Monte Carlo simulation method is used to deal with the continuous probability density function in which,and the discrete form of the competition model is derived.Finally,combining with a study case,this paper also makes a quantitative analysis on the influence of factors on the competitive strategy of wind power enterprises in different time period,such as markets’ historical price,risk aversion of wind power enterprise,precision of forecasting and stock contracts.At the same time,income of wind power enterprises under supporting market mechanism and guarantee mechanism is compared,and it proves that wind power enterprises under the supporting market mechanism can obtain higher income level than which under the guarantee acquisition conditions through strategy.