考虑SCE-TOG的水电机组调节系统协同控制器设计  

Synergetic Controller Design for Hydroelectric Unit Governing System Considering SCE-TOG

作　　者：徐潘 张仕海 XU Pan;ZHANG Shihai(College of Electrical Engineering&New Energy,China Three Gorges University,Hubei Yichang 443002,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电工材料》2023年第1期39-45,共7页Electrical Engineering Materials

摘　　要：水电机组调节系统对维持电力系统的稳定起着不可或缺的作用。为了同时提高水电机组调节系统各状态变量的跟踪性能,改善调节质量,引入协同控制理论,设计了水电机组调节系统调速、励磁协同控制器。首先建立了考虑调压井效应(SCE)及三阶发电机(TOG)的水电机组调节系统非线性数学模型,并推导出上述两种控制器的控制规律;在此基础上,针对水电站并入电网的单机无穷大系统,进行负荷扰动和三相短路故障两种情况下的仿真试验,比较协同调速励磁控制策略、协同调速控制策略和经典PID控制策略的跟踪性能。结果表明,所设计的调速、励磁协同控制器在两种工况下都体现了优越的控制性能。Hydroelectric unit governing system possesses irreplaceable status in maintaining the stability of electrical power system. In order to simultaneously improve the tracking performance of each state variable of hydroelectric unit governing system to enhance the regulation quality, synergetic control theory is introduced in this paper as well as speed regulation and excitation synergetic controller for hydroelectric unit governing system is designed. Firstly, the nonlinear mathematical model of hydroelectric unit governing system considering surge chamber effect(SCE) and third-order generator(TOG) is established,and control rule of the above two controllers is deduced. On this basis, simulation experiments are carried out under two conditions of load disturbance and three-phase short circuit fault for the single-machine infinite system of the hydropower station integrated into the power grid, so as to compare the tracking performance of synergetic speed regulation and excitation control strategy, synergetic speed regulation control strategy and classical PID control strategy. The results show that the designed speed regulation and excitation synergetic controller exhibits excellent control performance under both conditions.

关 键 词：水电机组调节系统 调压井效应 协同控制理论 调速励磁协同控制 非线性数学模型 

分 类 号：TK730.7[交通运输工程—轮机工程]