电弧故障,arc fault
1)arc fault电弧故障
1.Single terminalarc fault location for two parallel transmission lines on same tower;同塔双回线电弧故障单端测距算法
2.In this paper, the multiwavelet and wavelet neural network theories are first introduced intoarc fault signal processing, including time-frequency analysis, signal de-noising and data compression and fault classification, and new application algorithms are proposed.本文提出了多小波和小波神经网络构造方法及新的应用算法,首次将其应用于电弧故障信号分的时频分析、去噪、压缩及故障分类。
3.A new type of intelligent control device—arc fault circuit interruputer was introduced.电弧故障是引起电气火灾的原因之一,介绍了一种新型智能控制电弧故障断路装置。
英文短句/例句
1.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:
2.Arc Fault Management Using Solid State Switch in Aviation电弧故障检测在航空固态开关中的应用
3.A new low-voltage arc-fault circuit interupter device一种新型低压电弧故障断路装置的研究
4.Locating Arc Faults on Coupling Two Parallel Transmission Lines Using the Novel Phase-model Transformation耦合双回线路电弧故障测距的新相模变换方法
5.Study and Application on Multiwavelet and Wavelet Neural Network Constructing for Arc Fault Diagnosis;多小波和小波神经网络构造及其在电弧故障诊断中的应用研究
6.Fire accident can arise from low-voltage arc fault, and so it is necessary to detect arc fault.低压故障电弧有引发火灾的危险,所以检测故障电弧是必要的。
7.Researching on Designing the Arc Fault Circuit Interrupters(AFCI);AFCI(故障电弧断路器)的研制
8.The arc structure design for internal malfunction of KYN28AKYN28A型开关柜内部故障的电弧结构设计
9.On-line Detecting for Switchbox Failure Arc Based on Information Fusion基于信息融合的配电箱故障电弧在线检测
10.Research on Monitoring and Controlling of Arc-suppression and Fault Location in Distribution System;配电网消弧与故障定位控制技术的研究
11.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。
12.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。
13.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
14.Fractal Techniques in Arcing Fault Analysis and Online Power Cable Diagnostic Method;分形在弧光故障分析和电力电缆在线检测中的应用
15.Arc Current-transferring Type Fault Current Limiter Based on High Speed Vacuum Switch基于快速真空开关的电弧电流转移型故障限流器
16.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
17.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
18.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
相关短句/例句
Arcing Fault电弧故障
1.In this paper, after detailed study of the variation of zero-sequence currents during arcing fault, the disadvantageous effects of arcing on the accuracy of fault line selection are listed.文中在充分研究电弧故障暂态零序电流变化的基础上 ,指出电弧因素对故障选线准确性的影响。
2.Based on the previous achievements in arc modeling,this paper describes an ideal long arc volt- ampere characteristic and its equivalent circuit and presents a new method for locating arcing faults on HV long transmission lines with single- terminal voltage and current signals.电弧故障是高压输电线路的多发故障 ,目前众多故障定位算法大多数把故障过渡电阻视为线性定常电阻。
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
DCS—50型电子定量包装秤常见故障检修DCS—50型电子定量包装秤计量准确度高,稳定性好,包装速度快,广泛应用于制糖及化工行业。现把该秤常见故障的检修介绍如下:一、部件组成该秤主要由电气和气动两部分组成。电气部分采用MCS—51单片机系统和XK3113数字显示件相结合,以P8031为中心,该系统的故障率很低;气动部分由加料主气缸、放料气缸、夹袋气缸和电气换向阀组成,由于连续运行,其故障率占到80%左右。二、常见故障检修1夹袋机构不动作。说明电气转换阀没有正常工作,在气源气压正常情况下,首先检查换向阀线圈电压(24伏)是否能被控制,若电气转换正常则为换向阀故障,应更换,如果不能切换,对应的检修流程为夹袋开关、换向阀控制三极管、双向触发器(CD4013)光电耦合器。2重量显示不稳定,时好时坏。首先应该排除秤体震动现象,检查+5V系统供电电压是否稳定,秤体接地电阻是否符合要求。3料斗漏糖。料斗漏糖与放料机构故障有直接关系,清除斗内积糖,观察放料气缸是否到位,关门阀是否有积糖。如以上均正常,则应检查放料气缸密封性是否良好。在此气缸下部有一阻尼调整螺丝,当调整螺钉气孔堵塞时,会出现关门延时,而出现漏糖。疏通气孔后,最佳的调整方法是:及时关门,响应时间要短,又要保证具有良好的阻尼,否则,关门机构过量冲击料斗,造成数字显示不稳定,且机械手磨损快。4下料重量不稳,超差现象严重。该秤三联件中有一储油杯,气源通过油杯,带动润滑油进入各气缸及换向阀,主要作用一是润滑缸体,二是加强密封性能。当油路堵塞时,会造成气缸密封橡胶垫圈与缸体干磨,而出现破损,造成串气,影响气缸各级加料行程,通过更换主气缸两级橡胶垫圈,一般都能奏效,但同时应疏通油路。另外,该三联件上还设有一油量调整螺钉,如调整过大,也会造成润滑油直接外排而浪费;过小则起不到作用。具体调整应为每7天左右一杯油。5放料过程中缺少某一级加料过程。下料过程中缺少某级加料过程时,应仔细观察主气缸的到位情况,Q1,Q2,Q3,电气换向阀分别控制气源至主气缸电位的高低,应根据故障现象检查其对应的换向阀,Q1,Q2,Q3,分别负责一、二、三级加料过程气源的供给。在更换换向阀时,应将它的两种工作状态旋至“0”位。在排除了换向阀的原因后,进一部检查信号接口电路,各自的信号由光电耦合器输出至控制三极管,参数为BV>60V,Zcm>3A,Pcm>40W的达林顿管。6不能启动自动程序。首先检查放料气缸是否关闭,在气缸关闭的情况下,位置传感器是否松动、到位。位置传感器实际上就是一干簧开关,靠气缸内环形永磁体来实现关与开。当传感器位置不正确,气缸内永磁体磁性减弱都会引起信号失控,而出现自动程序不启动。在调整传感器位置无效时,可做应急处理:将传感器输出线短接,实际并不影响使用。