超低频振荡阻尼控制中的水轮机调速系统参数双层优化策略

doi:10.19595/j.cnki.1000-6753.tces.210104

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Abstract Aiming at the tricky problem of ultra-low frequency oscillation in the centralized hydropower delivery system, this paper proposes a parameter optimization strategy of hydro turbine governing system that takes into account both damping oscillation and frequency response dynamic performance. Firstly, this paper analyzes the mechanism and influencing factors of ultra-low frequency oscillation based on complex torque method. Secondly, it employs information entropy to develop a comprehensive performance index for suppressing ultra-low frequency oscillation and ensure the regulating ability of governing system. Thirdly, this paper builds a robust optimization model according to the above comprehensive performance index to achieve robust optimization of the governing parameters under complex operation conditions. Finally, the analysis of hydropower delivery real grid in Sichuan shows that the optimized parameters of the speed control system have good abilities to suppress ultra-low frequency oscillation and adjust the frequency under different working conditions.

Key words： Ultra-low frequency oscillation hydraulic turbine governor complex torque analysis method information entropy double-layer robust optimization

Received: 21 January 2021

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TM712

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	Yi Jianbo
	Zhang Guozhou
	Zhang Peng
	Liu Min
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Yi Jianbo,Zhang Guozhou,Zhang Peng等. Two-Layer Optimization Strategy of Hydraulic Turbine Governing System Parameters in Ultra-Low Frequency Oscillation Damping Control[J]. Transactions of China Electrotechnical Society, 2022, 37(5): 1219-1228.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210104 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I5/1219

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