Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (11): 3594-3602.doi: 10.19799/j.cnki.2095-4239.2022.0331

• Energy Storage System and Engineering • Previous Articles     Next Articles

Optimal allocation of energy storage in renewable energy grid considering the demand of peak and frequency regulation

Xiuhui LI(), Yan CUI()   

  1. State Grid Gansu Electric Power Company, Lanzhou 730030, Gansu, China
  • Received:2022-06-16 Revised:2022-07-07 Online:2022-11-05 Published:2022-11-09
  • Contact: Yan CUI E-mail:lixiuhui2686@126.com;27604056@qq.com

Abstract:

The issue of power imbalance is brought on by the large-scale access to wind power, photovoltaic and other renewable energy sources in the system. In this paper, we suggested a method to optimize energy storage allocation considering peak and frequency regulation demands. In order to quantify the contribution of energy storage to system peaking and frequency response, i.e., intra-day frequency regulation with contact line deviation control and day-ahead peaking with carbon footprint constraints, a typical daily multi-timescale operation simulation model is first established. Then, a two-layer energy storage configuration-operation optimization model is established. The lower model is a simulation of different typical day operations, solved by a hybrid algorithm of differential evolutionary algorithm & Gurobi solver. The upper model aims to minimize the sum of typical day-set operation cost and energy storage investment cost to determine the energy storage capacity. Finally, the calculation example demonstrates that the configuration results taking into account the dual application scenarios with energy storage participation are more reasonable, the overall system operation cost is lower, and the carbon emission is less.

Key words: energy storage configuration, renewable energy grid, two-stage operation simulation of peak-frequency regulation, two-layer optimization

CLC Number: