In this paper, the influence of the sectional insulation earth wire on the zero sequence parameters is analyzed in theory.
结合实际分析了分段绝缘地线对线路零序参数的影响以及在线路参数测量时要注意的问题。
The earthing method of the metal sheath varies somewhat in different cable lengths, which affects greatly line parameters, especially zero sequence impedance.
对于不同长度的电缆线路其金属护套的接地方式亦不尽相同，从而对电缆线路参数，尤其是对零序阻抗将产生较大的影响。
Not only the zero-sequence lumped parameters of the transmission lines but also the distributed ones are needed to measure.
电力工程上不但需要知道互感线路的零序集总参数+， 有时还需要知道分布参数。
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.
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。
Three examples show that it's impossible to solve zero-sequence parameters just using transient measurement data in one operation mode.
三个算例表明：仅用一种运行方式下的暂态数据不能求解出零序参数。
The incremental method, differential equation method and integral equation method are three main methods in zero-sequence parameters on-line measurement of transmission lines with mutual inductance.
输电线路的零序参数尤其是多回互感线路的零序参数是电力系统继电保护整定计算需要的重要参数，所以其准确测量具有重要意义。
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.
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.
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。
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