zero phase sequence impedance

基本解释

In typical six-phase transmission system, half positive sequence, half zero sequence and half negative sequence fault components are independent of the variance of system impedance.
在典型的六相輸電系統中，半正序、半零序和半負序故障分量不受系統阻抗變化的影響。
So it is necessary to find some ways for the fault location detection. In the phase-to-earth fault power system, the value of zero-sequence impedance is directly related to the earth conductivity.
這樣就降低了供電可靠性，故找出一種新思路使其能更準確有傚地判斷故障點具有重要意義。