The location result is not influenced by fault resistance and inception Angle when wavelet transform coefficient of aerial modecurrent is used in fault location.
利用线模电流的小波变换系数进行测距，不仅不受故障电阻的影响，也不受故障起始角的影响。
2
As shown in Figure 3-12, common - modecurrent (ICM) is caused by capacitive coupling (CCOUPLING) from the power line through the power transformer.
Any common-modecurrent (ICM) that may be present flows from the voltmeter input lo to instrument chassis common, through earth ground to voltage source ground.