Energy Storage Science and Technology ›› 2025, Vol. 14 ›› Issue (1): 162-171.doi: 10.19799/j.cnki.2095-4239.2024.0762

• Energy Storage System and Engineering • Previous Articles     Next Articles

Research on the optimal configuration of grid-forming energy storage connected to power systems with high proportional renewable energy based on CMMOPSO

Mosi LIU(), Zhiyuan SUN(), Jinzhao LI, Kun ZHENG, Lichun CHEN   

  1. Electric Power Research Institute, Guangxi Power Grid Co. , Ltd. , Nanning 530013, Guangxi, China
  • Received:2024-08-13 Revised:2024-09-05 Online:2025-01-28 Published:2025-02-25
  • Contact: Zhiyuan SUN E-mail:liums@qq.com;77569646@qq.com

Abstract:

Grid-forming energy storage plays an important role in new power systems; for instance, such storage participates in the frequency modulation and inertia control of power systems. However, whether such grid-forming energy storage can fully function in a regulatory role depends on the correct configuration of its capacity and location. To solve the problem of optimal allocation of grid-forming energy storage access to the power grid, this work examined the optimal allocation method of fixed volume location of grid-forming energy storage participating in the primary frequency modulation of a power system with a high proportion of new energy. First, the control strategy of the storage, including its active power frequency droop control strategy and the virtual synchronous machine control strategy, was examined. A comprehensive frequency regulation method combining the two control strategies was proposed. The primary frequency regulation effect index, power grid vulnerability index, and energy storage economy were considered as multiple objectives. Accordingly, a combination of the cross-mutation multi-objective particle swarm optimization algorithm with the TOPSIS algorithm was adopted. Based on the information entropy method weight from the Pareto solution set, an optimization plan was devised for determining the location and capacity of the grid-forming energy storage power stations. Finally, validation and optimization analyses were conducted for an actual calculation example of a regional power grid.

Key words: grid-forming energy storage, fixed capacity site selection, high proportional renewable energy

CLC Number: