基于在线辨识的实时最优励磁控制器  

OPTIMAL EXCITATION CONTROLLER BASED ON ON-LINE SYSTEM IDENTIFICATION

作　　者：范澍[1] 毛承雄[1] 陆继明[1] 

机构地区：[1]华中科技大学电力工程系,武汉430074

出　　处：《电力系统自动化》2001年第13期16-20,53,共6页Automation of Electric Power Systems

基　　金：国家重大科技项目 (攻关 )计划 (97- 312 - 0 1- 11- 1b)

摘　　要：设计了一种在线实时最优励磁控制器 (RTOEC) ,其辨识器能够由发电机运行状态的变化采用非线性最小二乘法辨识法准确辨识出单机无穷大模型中的系统参数 ,从而可根据辨识结果及其系统所遭受的扰动 ,通过线性最优控制理论实时计算出线性最优励磁控制的反馈增益矩阵 ,以适应系统当前的运行点和所遭受的干扰。仿真结果表明 ,所设计的 RTOEC能够适应系统运行状态的大范围变化 ,在大小扰动下均表现出良好的控制性能 。A real-time optimal excitation controller (RTOEC) is proposed according to the operation status of the generator, in which the identifier of the RTOEC can properly identify the on-line system parameters in a single machine infinite-bus power system through the nonlinear least square method. Thus a new optimal feedback matrix can be calculated in real-time from the identification results and the disturbances in the system. Simulation results show that the RTOEC can provide good control performances over a wide range of operating conditions and improve the static and transient stability of the power system effectively. This project is supported by National Science and Technology Key Project (No. 97-312-01-11-1b).

关 键 词：电力系统 系统辨识 最优控制 励磁控制器 稳定性 

分 类 号：TM761[电气工程—电力系统及自动化]