Autotransformers with all windings in Y-connection result in a Peculiar Zero-Sequence impedance.
全星形自耦变压器结构特殊。造成零序阻抗的特殊性。
Low and even forward (backward) and zero sequence impedance improves the quality of power supply.
电缆具有较低且均匀的正(逆)序和零序工作阻抗，有利于改善供电品质。
In the meanwhile it is pointed out that the quantity change of the parallel line and zero-sequence impedance must be retested.
同时还指出平行线路条数变化，零序阻抗均需重新测试。
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。
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.
这样就降低了供电可靠性，故找出一种新思路使其能更准确有效地判断故障点具有重要意义。
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。
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.
在典型的六相输电系统中，半正序、半零序和半负序故障分量不受系统阻抗变化的影响。
An adaptive impedance relay based on negative sequence voltage polarization is proposed, and its operating characteristic is analyzed.
提出了一种基于负序电压极化的自适应接地阻抗继电器方案，并对其动作特性进行了分析。
The analyzer is flexible and has wide measurement capabilities in both impedance and transmission measurements. It is also fully programmable using Auto Sequence Programming (ASP).
分析器是灵活的，而且具有广泛的测量功能，在这两个阻抗和传输测量，它也充分利用可编程序自动编程商(asp)。
The analyzer is flexible and has wide measurement capabilities in both impedance and transmission measurements. It is also fully programmable using Auto Sequence Programming (ASP).
分析器是灵活的，而且具有广泛的测量功能，在这两个阻抗和传输测量，它也充分利用可编程序自动编程商(asp)。
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