Some new models and algorithms are used, they are: zero impedance branch, orthogonal transformations, and measurement error estimation etc.
采用的新模型与算法有：零阻抗支路处理、正交化算法和量测误差估计等。
The EMTDC simulations indicate that the method can find out the faulty line correctly and prove that the analysis of the angle-frequency characteristic of zero impedance of the line is correct.
EMTDC仿真试验结果表明该方法可以准确地实现单相故障选线，并验证了文章对输电线路零序输入阻抗相频特性分析的正确性。
When measuring the charge on a device such as a capacitor, it's important to disable the zero check of the electrometer first, and then connect the capacitor to the high impedance input terminal.
在测量一个器件，如电容器上的电荷时，重要之点是要首先关闭静电计的零点检查功能，然后再将电容器连到高阻抗输入端。
Ideally, when a voltmeter is connected to a relatively low impedance circuit in which no voltages are present, it should read zero.
在理想的情况下，当把电压表连接到一个没有电压的、阻抗比较低的电路时，电压表的读数应当为零。
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。
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。
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。
Such a theoretical device would have a zero ohm output impedance in series with the source.
这种理论的设备将有一个与源系列零欧姆的输出阻抗。
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。
A real-world voltage source has a very low, but non-zero output impedance: often much less than 1 ohm.
一个真正的世界电压源具有非常低的，但不为零输出阻抗：通常远小于1欧姆。
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。
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。
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