Research On Frequency Modulation Market Trading Mechanism Of Shanxi Electric Power

With the transformation and upgrading of power system,its internal access to a large scale of renewable energy,which is an opportunity and challenge for our installed capacity of renewable energy and the market share of the present situation.Therefore,it is an important task for the power energy system transformation and upgrading to adjust the development direction and strategy of auxiliary service market of power frequency modulation.As the core of power market construction,power frequency modulation auxiliary service advocates the multi-entities of electric energy to participate in the track of frequency modulation auxiliary service,and realizes the diversification of power market entities on the basis of ensuring that the cost of frequency modulation is under control.Firstly,a rolling optimization method for reserve capacity of FM is designed.Based on the analysis of the operation mode of Shanxi FM auxiliary service market,the optimization method of capacity allocation based on full consideration of wind power FM is designed on the basis of clarifying the demand of Shanxi FM market.This method is compatible with the centralized control mode of wind farm,and improves its participation in frequence-modulation assisted market trading of power system.Economy and stability are taken as qualitative objectives of quantifying multi-objective constraint mechanism,and the probability parameter values related to wind power prediction deviation and load prediction deviation are constantly modified according to actual requirements.At the same time,a hybrid intelligent algorithm is introduced.According to the confidence difference,the optimal allocation scheme of the corresponding reserve capacity is made.Secondly,based on the perspective of market operators,a power-frequency modulation joint trading model is designed.This model fully considers the frequency modulation resource fluctuations and frequency modulation performance indicators,and substitutes the rolling optimization model of reserve capacity to obtain a clearing model.On this basis,we continue to deepen the new model of node electricity price and frequency modulation price,compare the node price compensation model and the marginal price compensation model of PJM market in the United States,and summarize the effects of clearing mode and compensation mode on the market players taking frequency modulation measures respectively.Finally,the trading mechanism of load aggregators replacing traditional FM units to participate in the FM auxiliary service market is constructed.Under the constraints of network,unit and load aggregator,the clearing model is improved.The FM quotation model is modified by considering the performance index and profit factor of market participants.Through the analysis of examples,it is verified that this model can increase the bidding capacity of traditional units,reduce the purchase cost of auxiliary services,improve the initiative of load aggregators to participate in market transactions,and promote the power system to run more stable.