锂电池和超级电容混合储能助力自动发电控制调频技术

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Abstract The participation of thermal power units in automatic generation control (AGC) frequency regulation is fundamental to maintaining the frequency safety of the power grid and requires assessment. Currently, thermal power units have a relatively high rate of AGC frequency regulation non-compliance, facing severe assessment pressure. In response to this issue, research on the joint participation of thermal power units and energy storage in AGC frequency regulation is conducted, and a joint frequency regulation control strategy is designed to ensure that the operation of thermal power units meets the assessment requirements. This paper, in combination with the Two Detailed Rules issued by the regional regulatory bureaus of the National Energy Administration, introduces the characteristics of hybrid energy storage and analyzes the essence of the assessment requirements for AGC frequency regulation of thermal power units. With the goal of meeting the assessment requirements, a joint AGC frequency regulation scheme and a control strategy for thermal power units equipped with fast-response energy storage are proposed, besides, the response and coordination mode between hybrid energy storage and lithium batteries is discussed. The case study shows that by implementing this control strategy, the comprehensive performance index of AGC frequency regulation of thermal power units can be significantly improved. Besides, the response and coordination methods between different hybrid energy storage and lithium batteries lead to different service lives of each.

Key words： automatic generation control (AGC) frequency regulation hybrid energy storage lithium battery

Received: 18 June 2025

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	Articles by authors
	HUANG Tiangang
	LI Gang
	JIANG Nan
	MIN Xiangbin
	LI Xiaobing

Cite this article:

HUANG Tiangang,LI Gang,JIANG Nan等. Hybrid energy storage combining lithium batteries and supercapacitors for automatic generation control frequency regulation technology[J]. Electrical Engineering, 2026, 27(3): 63-69.

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https://dqjs.cesmedia.cn/EN/Y2026/V27/I3/63

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