结合储能后发电机转子角控制的特性分析

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Abstract The generator rotor angle control can not only regulate active power to restore the frequency without intervention of the dispatching center, but also provide damping torque to suppress the inter-area low-frequency oscillation. However, the existing rotor angle control strategy uses the steam turbine to provide damping torque, which leads to the excess governing valve adjustment and reducing the life of the steam turbine. This paper uses the principle that the parallel energy storage can change the output of a generator through charging/discharging. And a mode of the generator rotor angle control that simultaneously control steam turbine and energy storage is given. The steam turbine is responsible for load following, and the energy storage is for providing damping torque and following small load disturbance. The simulations show that this mode has the advantages of the existing rotor angle control, and it can also significantly reduce the actions of the steam turbine valve during load disturbances.

Key words： automatic generation control (AGC) small-signal stability energy storage rotor angle control

Received: 16 October 2020

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	ZHANG Zhibin
	WEI Qiang

Cite this article:

ZHANG Zhibin,WEI Qiang. Analysis of the characteristics of generator rotor angle control combined with energy storage[J]. Electrical Engineering, 2021, 22(6): 60-65.

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http://dqjs.cesmedia.cn/EN/Y2021/V22/I6/60

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