零序电流保护是一种重要的接地保护方法。
The zero-sequence current protection is an important means of power system ground protection.
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.
全星形自耦变压器结构特殊。造成零序阻抗的特殊性。
Autotransformers with all windings in Y-connection result in a Peculiar Zero-Sequence impedance.
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.
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.
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.
这种新方法的基础是零序变压器在三相异步电动机断相时输出一个电压信号。
Use is made of that zero-sequence transformer outputs a voltage signal when phase-failure occurs in three-phase induction motor.
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.
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。
Not only the zero-sequence lumped parameters of the transmission lines but also the distributed ones are needed to measure.
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.
在故障时刻，无论故障相电压的相位处在何种初始状态下，都有零序电流反向的特征。
At the time of failure, no matter what kind of start state of voltage phase, the zero-sequence transient current has the characteristic of inverse phase.
本装置配有过流保护、负序电流保护、零序电路保护、起动时间过长保护、低电压保护。
Over current protection, negative current protection, zero sequence current protection, over time of start protection and low voltage protection is configured in the device.
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。
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.
对于零序差动保护的CT极性检测和校对问题，文中提出了两种自适应参考方案以供探讨。
And two draft resolutions were proposed trying to solve the problem of ct polarity checking in transformer zero-sequence differential protection.
该方法不受零序电流大小、线路补偿情况、谐波强弱等影响，具有较高的理论和实用价值。
The method is independent of zero-sequence current's value, inductance compensation situation and harmonics components, so it is effective and robust.
为确保外部接线的正确性，在零序方向保护投入运行时，我们将进行大量的现场带电测试。
For ensuring correct wiring, a great of active tests on site should be done before the protection is put into operation.
②检漏继电器采用零序电抗器并不影响选择性漏电保护的实现，而对其可靠工作作用明显；
A feeding switch with a leakage protection function to replace a leakage check relay should not be adopted for practices.
对近期提出的克服电网分布电容影响小电流接地选线的零序直流选择性保护原理作了理论分析。
This paper analyses the existing zero sequence directive current selective leakage protection principle which is to surmount the effect of distributed capacitance on it.
应用推荐