小电流接地系统发生单相接地故障时，故障线路与健全线路在特征频段内零序电流的相位差别是接地选线判据的重要依据之一。
The phase comparison between fault feeder and healthy feeder is one of important criteria in fault line selection for neutral non-effective grounding systems.
接线绕组的超高压变压器应增设零序差动保护。
The zero-sequence differential protection ought to be added at the star winding of extra-high voltage transformer.
重点介绍零序功率方向继电器的分析及判定方法。
It mainly focuses on analysis and determining method of zero sequence power direction relay.
由于无零序电流，对电话线路干扰的影响也降低。
Also interference with telephone circuit is reduced because of the absence of zero-sequence currents.
零序功率方向继电器是线路保护中的一个重要元件。
The zero sequence directional relay is an important relay component for transmission line.
提出了适用于平行双回线路的零序距离继电器新判据。
A double lines distance relay based on the zero sequence components is presented.
而保护装置针对自耦变压器，还配置了零序差动保护。
Protection devices is equipped with zero-sequence differential protection for the auto-transformer.
同时还指出平行线路条数变化，零序阻抗均需重新测试。
In the meanwhile it is pointed out that the quantity change of the parallel line and zero-sequence impedance must be retested.
无零序设计方案的效果与最大相电流最小化设计方案接近。
Similar performance can be obtained to some extent with the simpler scheme of no zero sequence component design.
信号报警显示部分由零序电压检测、报警、显示等电路构成。
The latter makes use of zero sequence voltage detection, alarm and display circuit.
其基本保护采用零序过电压保护，动作时间采用反时限特性；
The inverse time delay characteristic is adopted by the basic zero-sequence over-voltage protection.
分析自动跟踪补偿消弧线圈接地电网的零序测量电流分布规律。
The zero-sequence measurement current's distribution in the automatic arc-suppressing coil earthed power system is analyzed.
介绍了湖北电网零序电流保护整定计算程序的主要功能和特点。
The major function and features of the calculating program for Settings of zero sequence current protection of Hubei power system were described.
分析了瞬时电压补偿装置(DVR)产生零序电压及其放大机理。
This paper analyzes the mechanism of zero sequence voltage generating and its magnification by DVR.
笔者研究了换流阀三角形侧零序环流对阀短路保护误动作的影响。
This paper studies the influence of converter transformer D-bridge zero sequence circulating current on valve short circuit protection.
另外还需要进行变压器零序方向过电流保护动作方向正确性的检查。
The validity check of zero-sequence operating direction for transformer directional over-current protection is also essential.
文中用六序分量法分析了同杆双回线上零序功率方向继电器的性能。
Based on the method of six sequence fault component, this paper analyses the performance of zero sequence directional relay on double circuit line on the same pole (DLSP).
该文提出一种新的基于负序电流补偿的自适应零序过电压保护原理。
A novel principle of negative-sequence current compensation based adaptive zero-sequence over-voltage protection is therefore proposed.
运用电报方程推导出三线-地耦合传输线零序分量和正序分量传输线方程。
The zero sequence component and the positive sequence component equations of transmission lines are derived on the basis of telegraph equations.
提出了零序电流有功增量和零序电流幅值增量作为判据的故障点定位方法。
This paper also proposed a new fault locating method based on either the active component increment or the amplitude increment of zero-sequence current.
分析了电抗器保护匝间短路灵敏度，提出了自适应补偿零序功率方向的方法。
Moreover, the sensitivity of turn-to-turn fault of shunt reactor protection was analyzed and a method of adaptive compensated zero sequence direction was presented.
尤其是第三个谐波，这将导致零序电流急剧增加，从而增加了中性线的电流。
This is particularly the case for the third harmonic, which causes a sharp increase in the zero sequence current, and therefore increases the current in the neutral conductor.
最后总结出一般性的结论，其中关于零序电流的分布与经典理论有较大的区别。
General conclusions are extracted and the difference of zero sequence current distribution from classical theory is found.
详细叙述了漏电开关零序电流互感器及其铁芯，脱扣器的工作特性、材料选用。
The properties and selection of the zero-phase sequence current transformer core and tripper for GFCI are in detail described.
提出一种用零序分量做动作量，负序分量做制动量的综合序分量接地距离继电器。
An earth fault distance relay based on the combined sequence components is presented.
然后对小电流接地系统单相接地时零序电容电流的暂态过程及特点做了介绍和分析。
Subsequently, the transient course and characteristics of zero sequence capacitive current are introduced and analyzed.
从保护方案设计和保护逻辑两方面详细论述了一种新型的变压器零序差动保护方案。
A zero-sequence differential protection for transformer is discussed in scheme design and protective logic.
经研究发现，零序变压器输出电压与断相点间电压u _ (A ' A)成正比。
It is found that output voltage of zero-sequence transformer is proportional to voltage UA 'a between phase-failure points.
首先对采样的零序暂态电流信号做增强处理，然后利用小波包分析方法进行故障选线。
First the zero sequence transient current signal sampled is enhanced, and then the signal enhanced is decomposed by using wavelet packet analysis to realize faulty line detection.
基于对称分量法理论，提出了基于检测正序、负序、零序电流分量的电动机保护方法。
Based on the symmetry component theory, a method of the motor protection is presented by measuring positive, negative and zero sequence current component.
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