储能系统并网点过电压及绝缘特性分析

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Abstract Many factors will affect the regulation of energy storage system (ESS), such as system constraints, installation site, capacity, especially the self-reliability of the ESS. To ensure the reliable operation of the ESS and provide effective power support during voltage regulation, the voltage fluctuation of the connection point is analyzed and calculated based on the IEEE 14 node system for the insulation damage of the ESS step-up transformer. According to the overvoltage calculation results of the connection point caused by variation of photovoltaic (PV) output, charge-discharge of ESS, faults and switching impulse, the design method for the ESS transformer is studied. The transformer should be selected according to the actual voltage of the connection point to adapt all the conditions.

Key words： energy storage system (ESS) connection point step-up transformer overvoltage insulation characteristics

Received: 30 June 2025

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	Articles by authors
	ZHENG Yi
	WU Jiping
	ZHANG Keqian
	HUANG Xiaocheng
	GE Binxin

Cite this article:

ZHENG Yi,WU Jiping,ZHANG Keqian等. Overvoltage of the energy storage system connection point and insulation characteristic analysis[J]. Electrical Engineering, 2026, 27(1): 42-48.

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https://dqjs.cesmedia.cn/EN/Y2026/V27/I1/42

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