Application Analysis of Grid-Forming Energy Storage in Xizang Power Grid

doi:10.16628/j.cnki.2095-8188.2025.10.002

Abstract

Abstract:

The main power grid framework of Xizang is a long-chain weakly interconnected structure with insufficient system regulation capacity.Enhancing the active support capability has become an urgent issue for the Xizang power grid.Deploying the grid-forming energy storage is proposed to enhance grid voltage and frequency support capabilities.First, through simulation methods, the inertia response and voltage support capabilities of the grid-forming energy storage are focused on analyzing, and compared with those of synchronous generators.Then, by combining an operational case of a grid-forming energy storage power station in the Xizang power grid, the voltage and frequency support functions of the grid-forming energy storage in weak grids are demonstrated, proving that the grid-forming energy storage is the primary solution for supporting the Xizang power grid.Finally, the opportunities and challenges facing the development of the grid-forming energy storage are presented.

Key words: grid-forming, grid-forming energy storage, active support, weak grid

CLC Number:

TM912

XU Jiangbo, LI Jun, MAO Haibo, QIN Jiali, XU Shouping. Application Analysis of Grid-Forming Energy Storage in Xizang Power Grid[J]. LOW VOLTAGE APPARATUS, 2025, 0(10): 8-15.

Figures/Tables 19

References 15

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电源种类	惯量常数/s	一次调频	功率因数	故障支撑能力	短时过流能力	一次调压/ms	阻尼控制
抽水蓄能	3~6	10%~50%P_n/min	-0.85~0.85	1.3U_n/1 min	6.0~7.0I_n/10 s	100	是
同步调相机	≥3	—	—	1.3U_n/1 s	3.5I_n/15 s	20	是
构网型储能	2~14	100%P_n/100 ms	-0.90~0.90	1.3U_n/0.5 s、 0U_n/10 s	1.5~3.0I_n/10 s	20	是