用PMU量测设置V-θ节点的混合动态仿真验证策略

A Hybrid Dynamic Simulation Validation Strategy by Setting V-θ Buses with PMU Data

利用相量测量单元(PMU)量测数据,通过混合动态仿真校核并改进能量管理系统(EMS)中动态安全分析模型的正确性,是电网控制中心基于PMU的高级应用的重要内容。文中提出一种用PMU量测设置V-θ节点的混合动态仿真验证策略,将PMU实测的V值和θ值不经任何转换直接作为边界节点的给定量,使注入量测信号更直接、更精确。V和θ更能反映系统的动态变化,因此,应用该方法可以更灵敏地发现模型参数误差。以4机双区域系统和某省级电网为例,验证了该方法的有效性,用该方法开发的程序已作为校核工具嵌入电网动态安全稳定预警系统。

The hybrid dynamic simulation method, which combines PMU data with simulation models,can be used for power system simulation validation and parameter calibration purpose. This paper proposes a hybrid dynamic simulation validation strategy by setting V-θ buses with PMU data. It can incorporate field PMU data into simulation system more directly and accurately without any additional models. This method has high sensitivity of boundary power injection to the model parameters. The numerical tests on a four-machine two-area test system and a real provincial power grid demonstrate the validity of the proposed method. A hybrid dynamic simulation program is developed based on the proposed method and has been imbedded into EMS.