阐述了中压电网中性点接地方式的近况，国家有关标准的变化，企业应从中吸取有益的东西。
The recent developments of neutral point ground modes of medium-voltage power network and variety of national related standards are presented.
在中性点不接地电网中，频繁发生由电磁式电压互感器引起的铁磁谐振现象。
In the neutral ungrounded power system, ferroresonance over-voltage due to electromagnetic transformer takes place frequently.
为减少产生谐振，降低内过电压，中性点接地电阻器在中压电网的应用越来越多。
For decrease of harmonics and switching overvoltages the application of neutral grounding resistors is spreed.
对于中性点接地方式不同的配电网，按照能量的观点，选择不同的频带来实现故障选线。
In view of energy, the different frequency band is chosen corresponding to the distribution system with the different neutral grounding mode.
城市配电网因为其电压等级较低，为了提高系统供电的可靠性，曾广泛采用中性点不接地系统方式。
In distributions, because of its low-level voltage, its neutral point used to disconnect to the ground in order to improve its reliability.
对于中性点接地方式不同的配电网，按照能量的观点，在SFB频段内选择不同的频带利用波形识别技术来实现故障选线。
In view of energy, using waveform recognition, the different frequency band is chosen corresponding to the distribution system with the different neutral grounding mode in SFB.
介绍了我们研制的一种新型智能配电设备用于配电网中性点谐振接地系统中快速消弧并对故障线路选线。
In this paper a novel intelligent distribution equipment we developed is presented, mainly for suppressing arc in the resonant grounding distribution networks and detecting the earth fault line.
我国配电网一般采用中性点不直接接地方式。
The neutral of system is generally indirectly grounded in power distribution network in China.
在中性点非直接接地电网中，单相接地及由电压互感器(PT)引起的谐振过电压均是多发性的事故。
In ungrounded distribution system the single-phase-grounding and the ferro-resonance caused by the PT (Potential Transformer) are of the frequent accidents.
本文就城网改造中，配电网中性点运行方式问题进行了分析、探讨，强调采用中性点经电阻和自动跟踪补偿消弧线圈接地方式。
In the article the author analysises and discusses earthed neutral system. Methods of electric resistance and autotracking arcextinguishing coil in neutral point are discussed.
EDF通过总结和研究中压电网30多年的运行经验，决定将中性点低阻抗接地方式，全部改为谐振接地方式。
Summarizing the operating experience over 30 years, EDF determines to change low resistance grounding into resonance grounding in MV network.
通过对中性点不接地配电网单相接地故障时零序全电流的分析，得出了利用零序全电流的大小和方向进行故障选线的新方法。
By analyzing the zero-sequence full current for single-phase grounding fault in isolated neutral distribution network, a new approach to determine the faulty transmission line is obtained.
中性点非有效接地配电网发生单相接地故障时，尽快选出故障线路对提高电网的供电可靠性有重要意义。
When single-phase-to-earth fault occurs on a neutral non-direct grounded power system, it is nexessary for improving the reliability of power supplying to select the faulted line quickly.
随着配电网容量的不断增大和新型电气设备的大量使用，选择一种合适的中性点接地方式对电网的安全运行越来越重要。
With the increasing capacity of distribution network and new large-scale use of electrical equipment, a suitable neutral grounding more and more important for the safe operation of the power grid.
配电网中性点采用小电流接地在世界范围内是一种较流行的接地方式，并在我国配电网中得到了广泛应用。
This paper gives a general overview of various neutral grounding modes. Some existing theories schemes on the fault line selection have been summarized systematically.
配电网中性点采用小电流接地在世界范围内是一种较流行的接地方式，并在我国配电网中得到了广泛应用。
This paper gives a general overview of various neutral grounding modes. Some existing theories schemes on the fault line selection have been summarized systematically.
应用推荐