提高分接开关可靠性的直流输电控制策略优化

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Abstract To solve the problem of reliability reduction caused by frequent regulation of tap changers and achieve the purpose of less regulation or no regulation of OLTC, an optimized method of control strategy for different HVDC technology routes is proposed. For the inverter predictive Gamma control strategy, U_di0 control mode is chosen and boundary control conditions are given; for the inverter constant DC voltage control strategy, it is improved to the dynamic DC voltage control strategy and the OLTC control is also changed to U_di0 mode. In the RTDS simulation environment, Binjin and Chusui ±800kV UHVDC transmission projects are modeled and tested. The simulation results show that the proposed improved control strategy can significantly reduce the OLTC ation times, improve the reliability of the OLTC lifespan, and has good engineering practicability.

Key words： ultra high voltage direct current (UHVDC) on-load tap changer (OLTC) operation reliability control optimization real-time digital simulation (RTDS)

Received: 09 March 2020

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	Articles by authors
	Zhou Xiaofeng
	Fu Yan
	Cui Chen
	Kang Jianshuang
	Dai Guoan

Cite this article:

Zhou Xiaofeng,Fu Yan,Cui Chen等. The optimization of high voltage direct current control strategy to improve on-load tap changer reliability[J]. Electrical Engineering, 2020, 21(9): 54-58.

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http://dqjs.cesmedia.cn/EN/Y2020/V21/I9/54

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