电弧接地故障,arcing fault
1)arcing fault电弧接地故障
1.The authors analyze a lot of experimental data from the simulation of 6kV power network; obtain the features of zero-sequence transient currents in faulty feederarcing fault and healthy feeders whilearcing fault occurs.作者分析了6kV模拟电网的大量实验数据,得到电弧接地故障时故障线路与非故障线路零序暂态电流的特征。
2.To solve above problems,the paper proposed a single-phase grounding protection method that needs not zero-sequence voltage transient component and needs not calculate frequency and phase of transient component combing with lots of experiment data of simulatedarcing fault of 6 kV power networks and analyzed implementation principle of the method in details.针对上述问题,文章结合大量的6 kV电网模拟电弧接地故障实验数据,提出了一种不需要零序电压暂态分量、不需计算暂态分量频率和相位的单相接地保护方法,详细分析了该方法的实现原理。
英文短句/例句
1.Key words: low current earth electrical network, transient earth fault, zero-sequence energy, energy variation.关键词：小电流接地电网，间歇性电弧接地故障，零序能量，能量变化。
2.Modeling and Simulating of Single-phase Arc Grounding Fault in Non-effective Earthed Networks非有效接地电网单相电弧接地故障的建模及仿真
3.However, in this system serious over voltage may occur due to arc grounding fault.然而,在此系统中可能由于电弧接地故障而出现严重过电压。
4.Intermittent grounding faults and overvoltages due to arcing faults3 are eliminated.可消除间歇性接地故障以及由电弧故障引起的过电压：
5.Research on Integration Control System in Arc-Suppressing and Fault-Line Selection of Single-Phase-to-Ground Fault in Resonant Grounded Systems;谐振接地电网单相接地故障消弧及选线技术一体化研究
6.A Fault Line Selection Method for Small Current Neutral Grounded System by Arc Suppression Coil with Parallel Medium Resistance采用消弧线圈并联中电阻的小电流接地系统故障选线方式
7.Study on fault line detection for distribution network with arc suppression coil based on HHT neutral point grounding system基于HHT的中性点经消弧线圈接地配电网故障选线研究
8.Fault Line Selection for the Distribution System with the Adjustable Arc Suppression Coil可调节消弧线圈接地系统单相接地故障选线
9.A Singal-phase Fault-line Selection Research Used in the Newtral Point Indirection Grounding System through Compensation Winding消弧线圈接地系统单相故障选线的研究
10.Research on Fault Line Selection in Arc Suppression Coils System by Using Transient Energy消弧线圈接地系统暂态能量故障选线研究
11.The Analysis & Handing of Single-Phase Ground Fault in the System with Non-Effectively Earthed Neutral小电流接地系统单相接地故障及处理
12.A New Technique and a Comprehensive Intelligence Device for Eliminating Electric Arc and Resonance, and for Interrupting Single-Phase Ground Fault;中压电网系统消弧、消谐、单相接地故障综合保护新方法及智能综合保护装置
13.Fault line detecting with zero sequence active power and optimization of single phase grounding fault disposing process with neutral grounding via arc extinguishing coil system零序有功选线与消弧线圈接地系统单相接地故障处理过程优化
14.SINGLE PHASE GROUNDED LINE DETECTION FOR POWER NETWORK WITH ARC SUPPRESSION COIL GROUNDING中性点经消弧线圈接地系统的单相接地故障选线
15.Research of fault diagnosis of grounding grid of electric power plants and substations发电厂、变电站接地网故障诊断研究
16.Experimental Study on Fault Line Selection in Network Grounded with Arc Extinguishing Coil消弧线圈接地系统故障选线装置的现场试验研究
17.Neural Network Based Faulty Line Detection Method for Power System with Neutral Grounding via Arc Suppression Coil基于神经网络的中性点经消弧线圈接地系统故障选线方法
18.Analysis of Orthogonal Arc Suppression Coil and Application in Dynamic Compensation System of Earth Faults正交消弧线圈的分析以及在动态接地故障补偿系统中的应用
相关短句/例句
intermittent arc-earth fault间歇性电弧接地故障
1.To the complicatedintermittent arc-earth fault, the proposed method also works well.该方法不受电网平衡情况和接地电阻大小的影响,对复杂的间歇性电弧接地故障同样有效。
3)fault arc故障电弧
1.Design offault arc on-line detecting system based on labwindows/CVI;基于LabWindows/CVI的故障电弧在线检测系统的设计
2.In order to avoid or reduce arc fault hazard,the authors established an arc fault detecting test system with the method of power spectral analysis to study the early acoustic characteristics offault arc,and extracted the sound signature of earlyfault arc by using power spectrum analysis.为了避免或减少故障电弧的危害,笔者建立了故障电弧探测试验系统,采用功率谱分析的方法对故障电弧的早期弧声特性进行了试验研究,提取出故障电弧的早期弧声特征信息。
3.This paper introduces the dangers caused by internalfault arc in GIS and discusses the mechanism of metal tank burning through and exploding, then proposes the improvement in design.介绍了SF6气体绝缘金属封闭开关设备发生内部故障电弧的危害 ,分析了发生故障时电弧使壳体烧穿及气压升高使壳体爆裂的产生机理 ,从而提出了在设计上应采取的措施。
4)fault arcs故障电弧
1.Early detecting offault arcs using Lyapunov exponents;Lyapunov指数法在故障电弧早期探测中的应用
2.Exact digital simulation and calculation offault arcs;接地故障电弧的精确数字仿真及其计算
3.In switch tank,fault arcs are constant and disastrous trouble.开关柜内部的故障电弧是一种频发性、灾难性的严重故障,传统的故障电弧保护方案都是在发生燃弧之后开始报警并切断断路器,会造成一定的经济损失。
5)faults arc故障电弧
1.The present status of research and development offaults arc detection methods in switch cabinet were analyzed synthetically.鉴于故障电弧是电力系统开关柜内部的灾难性故障之一,综合分析了国内外对故障电弧探测方法的研究及应用现状,在对现有各种故障电弧探测方法进行介绍和分析,指出各种探测方法的技术特点、局限性和适用范围的基础上,提出了故障电弧的早期预测预警探测方法及故障电弧探测算法智能化的发展趋势。
2.In order to reveal the inherent relation and regularity of early time arc sound and arcing faults,an all-purpose test system for detectingfaults arc has been set up.在故障电弧伴生早期弧声频谱特性研究的基础上,提出基于小波包分解的早期弧声频带局部能量特征参数的快速提取方法。
6)arcing fault故障电弧
1.This paper mentioned a new method for the monitor system ofarcing fault based on the characterization information of sound arc,arc and short-circuit current.在以故障电弧弧声、弧光、短路电流为表征信息的基础上,提出了一种新的电弧保护方案。
2.A new method for the monitoring system ofarcing fault is therefore proposed.基于Duffing振子信号检测技术提出一种新型的故障电弧监测方法。
延伸阅读
电力系统中性点接地变压器接地电力系统中性点接地变压器接地earthing transformer for neutral groundingd旧n]一x .tong之hongx旧gd一onj旧d一b旧nyoq一j旧d-电力系统中性点接地变压器接地(earthingtransformer for neutral grounding)电力系统中利用接地变压器获得中性点与大地连接，也称中性点辅助变压器接地。当系统中的变压器不具备接人电阻器或接地故障消除器的条件(例如变压器三相绕组为△接线或虽为Y接线但容量不符合要求)时，要利用辅助的变压器提供一个用于接地的中性点。这种变压器应具备零序阻抗低、激磁阻抗大、功率损耗小的特性。绕组为曲折(Z)接线的变压器符合要求，如图1(a)所示。它可以带二次侧绕组，也可以只有一次侧绕组。这种变压器每相由匝数相等的两个串联分绕组组成，每个磁芯上的两个分绕组间以及它们对二次侧绕组的零序互磁为零。很明显，这种变压器的零序电抗XTo只为变压器一次侧绕组的漏电抗Xs，，即XTo-Xs;，而系统中性点与地之间的计算阻抗Z。为Z。一25，+Z。，其中Z。为中性点电阻器或电抗器的阻抗。见图1(b)。2.为激磁阻抗。见图2，YN，d接线的变压器二次侧绕组可以带一定负荷。从过负荷能力考虑已经知道.接YN，d接线的双绕组变压器中性点的接地设备的容t不应超过变压器额定容t的50%.由此可认为，当变压器额定容t按中性点接地设备的容t设计时，允许二次侧绕组带50%额定容t的负荷.还有一种特殊接线的接地变压器和接地设备的组合，是19鲍赫(R.Bauch)发明的，故也称饱鹅变压器，见图3。变压器一次侧中性点直接接地，开口三角形接线的二次侧连接接地设备，这与一次侧中性点接有接地设备是等效的。单相接地时，不对称的电压可分解为对称的正序和零序，磁通也可分解为对应的分量。磁通人m、人。、人.需要极小的激磁电流，并对应于正序电压U.。、U、。、U。。，零序电压UO.对各相是一样的，故三个磁柱中有相同的磁通式，对零序磁通来说，变压器相当一个单相变压器，只不过分裂为3个磁柱和3个绕组，见图3(c)。单相接地时，这种变压器每个分绕组上的电压为少尹z‘一.哟.!|||一下咖l!补丰气l一!{屯犷!{屯享!孟=zl息)一刃川l|拍--l--﹄·图1绕组为曲折(Z)接线的变压器 (a)接线图.(b)零序阻抗图会‘价“相“压，·““”的““是中”点接地“备电流的1/3，即夸。因而变压器的额定功率为3x2‘会‘争即中性点接地设备“率”1.15倍。
