由于阻抗法易受过渡电阻、互感器误差、线路结构不对称等因素的影响，所以测距精度不高。
Because the impedance fault location method is easily influenced by the factor such as fault resistance, transformer error and asymmetrical line configuration, the fault location accuracy is lower.
电流互感器二次负载阻抗对电流互感器误差有较大的影响。
Secondary load impedance of a current transformer(CT) has great influence on the error of the CT.
该方法是将互感线路的伏安特性方程转化为积分形式，并采用了最小二乘法求解方程组，同时得出各线路的零序自阻抗及线路间的零序互阻抗。
The new method turned the volt-ampere characteristic equation of transmission lines into an integral form, then used least square method to solve the equations and got the zero-sequence parameters.
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