A Calculation Method for Levied Peak Electricity Price Dealing with Virtual Power Plant Peak Shaving Subsidy

The power grid is currently challenged by the ever increasing peak load and widening peak-to-valley difference, and the pressure to maintain the balance of power supply and demand is increasing. As a new generation of intelligent load aggregation and control technology, virtual power plant (VPP) can effectively guide users to participate in load demand response, thus promote the optimization of power grid and alleviate its operation burden. However, the success of VPP depends on the active participation of users, which is indispensable from sufficient subsidy funds. At present, an effective way to obtain VPP subsidy is to levy peak electricity price of large industrial loads. For existing levied peak electricity price method, the incremental value of peak electricity price is normally determined by artificial experience, while the actual load characteristics and VPP operation conditions have not been comprehensively considered. Therefore, it is unable to scientifically evaluate the peak electricity price increase required for the implementation of VPP. In this work, a method for assessing the levied peak electricity price to deal with VPP peak shaving subsidy is proposed. It comprehensively considers the actual power grid load, the VPP application demand as well as the condition of large industrial load. A simulation case presents the application of this method. In addition, the method is convenient to be deployed, thus provide an effective means for VPP levied price evaluations.