考虑L的三个不同值 各自的谱估计图如上图所,源码不错的-Consider each of the three different values of L spectrum estimation figure as above, good source

输电网潮流及状态估计计算程序牛拉,高塞,PQ,直流等各种程序(The cow pull grid trend and state estimation calculation program, high plug, PQ, dc and other procedures)