基于虚拟同步发电机双模式切换的柴储微电网无差调频控制策略

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Abstract In recent years, the penetration rate of new energy sources in microgrids has gradually increased, while some systems still retain diesel generators to guarantee power supply. In an isolated AC microgrid containing both energy storage inverters and diesel generators, the differences in control strategies and response characteristics of the two make the system frequency and power prone to excessive oscillations and even overruns after load fluctuations and power throwing. Taking the underground protection project as the application scenario, this paper studies the diesel storage isolated microgrid under the condition of emergency power supply. An outer-loop control strategy for the energy storage inverter is designed and simulated on the PSCAD software to realize the zero-error frequency regulation and power stabilization of the system under various power supply modes and to distribute the active power between the two in a target proportion when the diesel storage is jointly supplied.

Key words： isolated microgrid energy storage diesel generators zero-error frequency modulation

Received: 31 May 2022

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	Articles by authors
	WEI Yifan
	XING Jianchun

Cite this article:

WEI Yifan,XING Jianchun. Zero-error frequency modulation strategy for diesel storage microgrid based on virtual synchronous generator dual-mode switching[J]. Electrical Engineering, 2022, 23(11): 13-20.

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http://dqjs.cesmedia.cn/EN/Y2022/V23/I11/13

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