全功率变速抽蓄机组调速系统稳定性分析及参数优化  

Stability Analysis and Parameter Optimization of the Governor System for Full-power Variable Speed Pumped Storage Units

作　　者：栾一航 孙建军 庄凯勋[1,2] 张远志 查晓明 丁理杰 LUAN Yihang;SUN Jianjun;CHUANG Kaihsun;ZHANG Yuanzhi;ZHA Xiaoming;DING Lijie(Hubei Key Laboratory of Power Equipment&System Security for Integrated Energy,Wuhan 430072,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;State Grid Sichuan Electric Power Company Electric Power Research Institute,Chengdu 610041,China;Power Internet of Things Key Laboratory of Sichuan Province,Chengdu 610041,China)

机构地区：[1]综合能源电力装备与系统安全湖北省重点实验室,武汉430072 [2]武汉大学电气与自动化学院,武汉430072 [3]国网四川省电力公司电力科学研究院,成都610041 [4]电力物联网四川省重点实验室,成都610041

出　　处：《高电压技术》2025年第4期1599-1608,I0009,I0010,共12页High Voltage Engineering

基　　金：中国博士后科学基金(2024T170676);国网四川省电力公司科技项目(521997230004)。

摘　　要：功率优先控制下全功率变速抽蓄机组调速器与变流器响应速度的较大差异使其面临转速反调、振荡乃至失稳的潜在风险。为此,建立了功率优先控制下全功率变速抽蓄机组线性化模型,提取了机组转速稳定性的关键影响因素,并据此推导了机组出力调节过程中以调速器控制参数为自变量的转速稳定域解析表达式,相较常规稳定域计算方法,该表达式在保证准确性的同时极大降低了计算量。基于所提稳定判据,分析了机组工作水头对机组稳定域的影响及调速器参数对机组转速特性的影响,并提出了实时计算调速器控制参数较优取值的简便方法,仿真结果表明,该方法能有效抑制机组出力调节过程中的转速振荡现象。The large difference in response speed between the governor and the converter of the full-power variable-speed pumped storage unit(full-power VSPS)under power priority control brings about the potential risks of speed undershoot,oscillation and even instability.Therefore,a linearized model of the full-power VSPS under power priority control is established,and the key influencing factors of the unit speed stability are extracted.Accordingly,an analytical expression of the speed stability domain with the governor control parameters as the independent variable during the unit output regulation is derived.Compared with the conventional stability domain calculation method,this expression greatly reduces the amount of calculation while ensuring the accuracy.Based on the proposed stability criterion,the influence of the unit working head on its stability domain and the influence of the governor parameters on the unit speed characteristics are analyzed,and a simple method for real-time calculation of the optimal value of the governor control parameters is proposed.Simulation results show that this method can be adopted to effectively suppress the speed oscillation phenomenon during the output regulation of the full-power VSPS.

关 键 词：全功率变速抽蓄机组 功率优先控制 小信号建模 稳定性分析 调速系统 控制参数优化 

分 类 号：TV734[水利工程—水利水电工程]