基于电力系统混合仿真的低频振荡误差校正策略

In recent years, the connection of large power grid led to frequent occurrence of low-frequency oscillation, while the conclusions of analyzing low-frequency oscillations is totally dependent on the accuracy of power system dynamic simulation. According to the dynamic simulation status of inaccurate model and parameter, Due to the secondary development program controlling language IPLAN, this paper presents a strategy to reduce the errors of analyzing low-frequency oscillations, that is, implement hybrid simulation in PSS/E and Prony analysis of transmitting power in tie-line, then emendate errors with relevant technologies of parameter identification and eigenvalue sensitivity. It is showed that the proposed strategy is feasible and correct by the example.