Power System Trading Mechanism Research Based On The Blocking Of Wind Power

Because of the wind power output essentially subject to the fast of wind speed,wind power has significant volatility compared with the traditional way of generating.Therefore,it brings to the conventional power much additional costs after the large-scale wind power integrating to the grid.The early research of authors analyzed the calculation method of volatility cost.This paper makes some further studies based on this,mainly include the analysis of variation smoothing effect based on multi-wind power scenarios and wind power trading mechanism based on the analysis of volatility cost of wind power.1.The variation smoothing effect based on multi-wind power scenarios and the benefit allocation methods are studied.First,this paper proposes two kinds of method to calculate the single-wind power's volatility cost under the multi-wind power scenario.Second,due to the different geographical location and weather factors between the wind farms,there are Space Complementary Effect between the wind farms when the geographical position are far away.This effect will lead to the overall output be more smoothly,the volatility cost of system can be lower.This phenomenon is named as "volatility smooth effect" in this paper.At the same time,for the benefit allocation caused by this effect,this paper,based on the research of cooperative game theory,use EANS and Shapley allocation method to make a distribution on this benefit.2.The unilateral bidding mechanism based on the block trading is studied.The characteristic of the block trading is that it divides the load by direction of the horizontal,and the working unit of power producers would uninterrupted operate,hence it reduces the cost of unit caused by unit commitment.Secondly,based on the calculation method of wind power volatility cost,this paper designed a unilateral block power market transaction mechanism.Among them,the load is divided by the way of "following load",each load segment is sold by bidding.And the output curve of power producers are "following load",then the superposition of the outputs eventually meet the overall load demand.For wind power,this paper designed two bidding modes:the way by cooperating with regular power operation,and the way of working alone by wind power to participate in bidding.Finally,this paper gives the simulation of the process of wind power participating in the bidding.3.The wind bilateral negotiation trading mechanism is studied.Bilateral negotiation trading is based on the negotiations between the power producers and buyers.This negotiation process is based on the prices provided by both sides.At the same time,this paper introduce the demand response to bilateral negotiation transactions,the buyers can partly change their load to reduce the cost of wind power.It includes two demand response strategies,load translation and load correction.And this paper analyses the effect of demand response to promote bilateral negotiations.