The Key Factors in Turbine Governor System Influencing the Low Frequency Oscillations in Power System

doi:10.11930/j.issn.1004-9649.2017.01.105.06

Abstract

Abstract: The steam turbine governing system is closely related to the power grid security, of which there are several factors that can specifically affect the low frequency oscillation of power systems. In combination with detailed case studies, the mechanism of the impacts from these factors are presented in the aspects of the steam turbine control function, the PID parameters, the DEH side power control loop, the frequency modulation circuit, the time delay of the control system, the valve opening shaking and the signal fluctuation, etc. In addition, the operation procedures and equipment defects which possibly cause the low-frequency oscillation are put forward for improving the operation stability level of power grids.

Key words: steam turbine, turbine governor, power system, low frequency oscillation, steam turbine control function, primary frequency regulation

CLC Number:

TM712

ZHANG Bao, FAN Yinlong, GU Zhenghao, WU Wenjian. The Key Factors in Turbine Governor System Influencing the Low Frequency Oscillations in Power System[J]. Electric Power, 2017, 50(1): 105-110.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.01.105.06

https://www.electricpower.com.cn/EN/Y2017/V50/I1/105

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