探讨了中性点接地三相桥式固态限流器桥路故障诊断方法。
This paper presents a fault diagnosis method for neutral grounding three-phase bridge type solid-state fault current limiter (SSFCL).
对中性点接地变压器的影响因素包括多个,其中最主要的是地电位升。
There are several factors affecting neutral grounded transformers, among then, ground potential rise is most important.
提出了常值脉冲法对中性点接地系统所发生的铁磁谐振混沌状态进行抑制。
The authors propose a constant pulse method to control the chaos of ferroresonance in neutral grounded system.
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.
由于母线PT励磁特性的非线性,铁磁谐振频繁发生在中性点接地变电站的空母线上。
Ferroresonance due to the saturation of PT magnetizing characteristics is frequently reported to happen on the busbars of neutral grounded substations.
本文主要对目前大电流中性点接地变压器中性点保护普遍采用的保护方式进行了探讨;
In this paper, the current-current neutral grounding transformer neutral point commonly used to protect the way of protection was discussed;
本文从接地、接零的一些基本概念开始,分析了电力系统中性点接地的一些典型方式。
This article met the zero from the earth some basic concepts to start, to analyze electrical power system neutral point earth some typical ways.
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.
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.
分析了中性点接地电容器组内部故障时的内部过电压和相电流变化,并给出了相应计算公式。
This paper analyses the internal overvoltage and the phase current of grounded wye shunt capacitor bank when there are failures in it, and gives corresponding equations.
分析了直流接地极电流对中性点接地变压器的影响,介绍了减小流入该变压器绕组直流电流的措施。
The effect of DC earthed pol current on the neutral earthed transformer is analysed. The methods of reducing THD DC current which flows into transformer windings are introduced.
目前对大容量发电机中性点接地方式有两种不同观点,即中性点经配电变高阻接地和经消弧线圈谐振接地。
Two different viewpoints about neutral ground way of large-capacity generators at present, neutral grounding by distribution transformer or resonant.
阐述了变压器中性点接地方式中的消弧线圈接地方式的工作原理和使用特点,为供电系统的安全运行提供了保障。
Working principle and application features of anti-arc coil in transformer neutral-point earthing mode are introduced, which provides safety running for electricity supply system.
研究结果显示,主变压器的中性点接地与否及电缆遮蔽导体与互連导体对整体的接地系统故障特性有关键性的影响。
The study results reveal shown that the ground fault current will increase with the number of main transformer with neutral to be solidly grounded.
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.
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.
针对变电所消弧线圈接地系统在正常运行情况下中性点位移电压长时间偏高现象,进行了分析。
The abnormal phenomenon of long time higher neutral voltage shift in a substation is analyzed, which is grounded through arc suppression coil.
选择了高抗中性点小电抗和线路接地刀闸的参数。
The parameters of neutral reactor for HV shunt reactors and the line ground switch are selected.
本文针对中性点有效接地系统的送电线路的绝大部分故障类型提出了有效的检测手段。
This paper proposes effective methods to detect most kinds of faults occurred in transmission lines which are in effectively neutral grounded system.
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.
本文介绍了380V低压配电系统中性点的接地方式,分析了接地与不接地系统特性。
The way of neutral grounding in 380V LV distribution system was introduced and the characteristics of grounded and non grounded systems were analyzed.
发电机中性点运行方式有中性点不接地、小阻抗接地、高阻抗接地、消弧线圈接地。
Generator neutral ground methods include non-ground, low impedance ground, high impedance ground and arc-suppression coil ground.
为了解决这一问题,我国现在普遍采用中性点经消弧线圈接地的补偿方式。
To solve these problems, the compensating method of neutral point grounding through Peterson coil is commonly used in our country.
相对于中性点非直接接地系统而言,发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点,而且对它的研究相对较少。
Compared with neutral ungrounded power system, ferroresonance overvoltage occurred in neutral grounded power system has more new features, and the research about it is much.
介绍了中性点不接地系统的几种电压不平衡现象,分析了不平衡现象产生的原因,对于运行中的故障分析具有一定的指导意义。
The article introduces voltage unbalance of neutral non-grounding system, analyzes the cause of voltage unbalance. It is valuable on fault analysis in practice.
并通过对比,找出井下变压器中性点不允许直接接地的原因。
Through contrast analysis, finds the reason of not allowed direct ground connection for transformer under the shaft.
因此,对中性点不接地系统加深认识十分重要。
Therefore, deepening the knowledge of isolated neutral system is very important.
因此,对中性点不接地系统加深认识十分重要。
Therefore, deepening the knowledge of isolated neutral system is very important.
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