Direct transaction model for wind-solar-storage combined power station and power users
With the continuous improvement of the accuracy of renewable energy and load forecasting,the direct transaction of electric energy between wind-solar-storage combined power station and power users has become feasible.Considering the impacts of direct transaction of electric energy on the system operation,a consumption model with direct transaction of electric energy between wind-solar-storage system and power users is established.The model aims to maximize the total social benefits.The power output constraints of direct power purchase contracts and the related operation constraints of the energy storage are introduced to the traditional model.At the same time,it makes adjustments to the constraints of total power purchase contracts,and adds the wheeling cost and contracts reduction penalties to weigh the comprehensive benefits brought by direct-power-purchasing to the system.Combined with the generated clustering scenario,the day-ahead optimization results of the wind-solar-storage power station are analyzed through a numerical example,and the influence of the contract power limit factor and penalty factor on the quantity of direct purchase power and the total social benefits is studied.The impact of electricity price on the profit balance is analyzed with the Nash bargaining model,which verifies the feasibility and rationality of the proposed model.
direct transaction of electric energyscene clusteringday-ahead dispatchingcontract power limit factorpenalty factor
国家科技期刊平台
NSTL
万方数据
