It USES the positiveimpedance in static stability and low-voltage impedance which can effectively prevent the mal-operation in external faults.
静稳阻抗和低电势阻抗采用正序阻抗，能有效地防止外部短路造成的误动作。
2
The measured distance of the lump parameter circuit model can be converted to the correspondingly matching positive sequence measured impedance.
根据集中参数线路模型算法的实测距离，换算成与模型匹配的正序测量阻抗。
3
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.