高压侧电压控制对电力系统小扰动稳定性的影响

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Abstract This paper studies the impact of high side voltage control (HSVC) on the small signal stability of power systems. The study reveals that HSVC changes two coefficients of the Heffron-Philips model. Accordingly the damping torque coefficient is different from that of the ordinary automatic voltage regulator (AVR). The damping ratio of the rotor angle mode is also affected as the damping among eigenvalues is redistributed. Furthermore HSVC influences the phase lag angle of the excitation system. Then, time domain simulations are performed based on power system simulation for engineering (PSS/E). One is to verify the damping ratios of the rotor angle mode of three types of excitation system, and the other is to examine the impact of HSVC on the effectiveness of PSS whose parameters have been set before HSVC is in service. The result of the latter is used to decide whether or not the PSS parameters should be reset. The simulations are in consistent with the theoretical analysis.

Key words： High side voltage control Heffron-Philips model damping torque coefficient eigenvalue phase lag angle parameter setting of PSS

Received: 16 October 2007 Published: 11 February 2014

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TM712

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	Wu Cheng Xu Zheng Chang Yong

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Wu Cheng Xu Zheng Chang Yong. Effects of High Side Voltage Control on the Small Signal Stability of Power Systems[J]. Transactions of China Electrotechnical Society, 2009, 24(1): 146-152.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I1/146

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