最小二乘估计法优化电力系统网络等值参数

Optimizing of Equivalent Network Parameters of Power Systems Based on Least squares Estimation

分析了传统的REI网络等值方法产生误差的原因,而最小二乘法能通过估算得到一个在最小方差意义上与实验数据最好拟合的数学模型,因此采用最小二乘估计法对等值结果进行了优化和改进,使之能得出在不同网络拓扑结构下较准确的等值网络参数,最后通过实例说明了改进后的方法具有更好的收敛性和准确性。

The errors of traditional REI equivalence method are analyzed. The leastsquares estimation to improve the equivalent network parameters in the different topology configuration of network is used. It is shown by an example that the improved method has better convergence and high accuracy.