Title: Optimal configuration of new energy grid connected energy storage capacity from the perspective of dual carbon

Authors: Mengdi Zeng; Yu Cai; Kaihui Shen

Addresses: China Southern Power Grid Electrical Technology Co., Ltd., Guangzhou, 510080, China; Guangdong Provincial Key Laboratory of New Technology for Smart Grid, Guangzhou, 510080, China ' China Southern Power Grid Electrical Technology Co., Ltd., Guangzhou, 510080, China; Guangdong Provincial Key Laboratory of New Technology for Smart Grid, Guangzhou, 510080, China ' China Southern Power Grid Electrical Technology Co., Ltd., Guangzhou, 510080, China; Guangdong Provincial Key Laboratory of New Technology for Smart Grid, Guangzhou, 510080, China

Abstract: To reduce the load shortage rate of new energy grid connection and suppress grid connection fluctuations, an optimised configuration method for energy storage capacity is proposed. After constructing a new energy grid connected energy storage model, establish an objective function based on the dual carbon perspective. Following the principle of electricity balance, ensure that the electricity demand of the grid connected load is equivalent to the output of the power generation module, and calculate the energy storage capacity. Finally, based on power fluctuations, advanced control methods are used to reasonably regulate energy storage capacity. The experiment shows that after applying this method, the power fluctuation of new energy grid connection is between 30-40 kW, the state of charge of energy storage is between 80-90%, the load shortage rate is between 0.012-0.014%, and the service life of the battery can reach eight years, indicating the feasibility of this method.

Keywords: new energy power generation; dual carbon theory; power grid connection; advance control; energy storage capacity configuration.

DOI: 10.1504/IJETP.2023.134165

International Journal of Energy Technology and Policy, 2023 Vol.18 No.3/4/5, pp.326 - 342

Received: 25 Apr 2023
Accepted: 04 Jul 2023
Published online: 12 Oct 2023 *

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