Single-time power frequency modulation and peak -modulation market combined clearing method considering new energy absorption capacity

Abstract

In order to support the transaction clearing business of power frequency modulation and peak load modulation market in China and improve the absorption capacity of new energy, the coupling relationship between power frequency modulation and peak load modulation auxiliary service is studied, and the combined clearing method of single time period power frequency modulation and peak load modulation market considering the absorption of new energy is proposed. The coupling relationship between power frequency modulation and power peak modulation auxiliary services is reflected in that the two auxiliary services are mutually exclusive. Considering the important promoting effect of peak regulation capacity on new energy consumption, the index of residual depth peak regulation capacity was proposed as the evaluation basis of the clearance result on new energy consumption capacity. On this basis, a single time combined clearing model of power frequency modulation and peak-shaving market is constructed, which takes the minimum clearing cost as the main optimization objective and the maximum remaining peak-shaving capacity as the secondary optimization objective. Numerical examples show that the proposed method has significant advantages over the current sequential cleaning method and the combined cleaning method without considering the consumption of new energy in terms of transaction cost and residual depth peak-shaving capacity. The results show that the method proposed in this paper meets the requirements of promoting the construction of new power system with new energy as the main body in China, and has significant benefits in promoting the reform of power market and improving the consumption of new energy.