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  

Two-Layer Optimization Strategy of Hydraulic Turbine Governing System Parameters in Ultra-Low Frequency Oscillation Damping Control

作　　者：易建波[1] 张国洲 张鹏 刘敏 张星 Yi Jianbo;Zhang Guozhou;Zhang Peng;Liu Min;Zhang Xing(Key Laboratory of Wide-area Measurement and Control on Power System of Sichuan Province University of Electronic Science and Technology of China,Chengdu 611731 China;State Grid Sichuan Electric Power Research Institute,Chengdu 610072 China;China Electric Power Research Institute Co.Ltd,Beijing 100192 China)

机构地区：[1]电子科技大学电力系统广域测量与控制四川省重点实验室,成都611731 [2]国网四川省电力公司电力科学研究院,成都610072 [3]中国电力科学研究院有限公司,北京100192

出　　处：《电工技术学报》2022年第5期1219-1228,共10页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划(2017YFB0902000);国家电网公司重点科技项目(521999180001)资助。

摘　　要：该文针对水电集中外送系统中的超低频振荡问题,提出兼顾阻尼振荡和频响动态性能的水轮机调速系统参数优化策略。首先,基于复转矩法分析超低频振荡的机理及影响因素,验证了通过调整调速系统参数来抑制超低频振荡的可行性;其次,基于信息熵制定了抑制超低频振荡并确保调速系统调节能力的综合性能指标;然后,构建基于综合性能指标的鲁棒优化模型,实现了复杂工况情形下的调速参数鲁棒优化;最后,经四川某水电外送系统应用测试表明,调速系统优化参数具备良好的抑制超低频振荡能力以及适应多种工况的快速调频能力。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.

关 键 词：超低频振荡 水轮机调速器 复转矩分析法 信息熵 双层鲁棒优化 

分 类 号：TM712[电气工程—电力系统及自动化]