小电流接地,small current grounding
1)small current grounding小电流接地
1.Integrated fault line selection device forsmall current grounding network;一种新型小电流接地综合选线装置
2.Design of programmable sampling system in fault line selectiondevice forsmall current grounding system;小电流接地选线装置可编程采样系统设计
3.Line selection technology forsmall current grounding systems;小电流接地选线技术的分析
英文短句/例句
1.The monitoring of small current grounding single-phase power supply system小电流接地供电系统单相接地的监测
2.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
3.The Reaserch of the Line-Selection of Singel-phase Fault of Trickle Earthed System;小电流接地系统单相接地故障选线的研究
4.The Research on Fault Line Selection Non-Solid Earthed Networks;小电流接地系统单相接地故障选线研究
5.Design of the Protection Device of Ground Fault Line Detection for Neutral Low Current Grounded System;小电流接地系统接地选线装置设计与开发
6.An Intelligent Line Selection Instrument of Single Phase to Ground in Small Current Neutral Grounding System;小电流接地系统单相接地智能选线装置
7.Fault Circuit Selection and Fault Location for a Single Phase Fault of Non-Direct-Ground System;小电流接地系统单相接地故障的选线与定位
8.The Studies on the Novel Method of Non-direct-ground System Single Line-to-earth Fault Location;小电流接地系统单相接地故障选线新方法研究
9.Study on Fault Location Method for Single-Phase-to-Ground Fault of Small Current Grounding System;小电流接地系统单相接地故障测距方法的研究
10.Single Phase-to-earth Fault Selection and Location of Small Current Grounded System;小电流接地系统单相接地故障选线与测距
11.Research on Integrated Fault Line Detection in Non-Effectively Grounded Neutral System;小电流接地系统单相接地故障综合选线研究
12.Development of Single-Phase-to-Ground Fault Line Selection Device in Neutral Un-effectual Grounded Systems小电流接地系统单相接地故障选线装置的研制
13.A Survey on Faulty Line Selection Technology for Single-Phase Grounded Transmission Line in Small Current Neutral Grounded System小电流接地系统单相接地选线技术综述
14.Development of Protect Device of Single-phase Earth in Non-solid Earthed System小电流接地系统单相接地保护装置的研制
15.A New Fault Location Method for Single Phase to Ground Faults in the Small Current Neutral Grounding System一种小电流接地系统单相接地故障测距新方法
16.Selection methods of single phase grounding fault line in small current neutral grounding system小电流接地系统单相接地故障选线方法分析
17.Project of Fault Line Detection for Single-phase-to-earth in Small Current Neutral Grounding System小电流接地系统单相接地故障选线的方案研究
18.A method of single-phase grounded feeder detection in indirectly earthed power system based on judging the change of zero-sequence current ratios基于零序电流比值变化的小电流接地选线方法
相关短句/例句
small current neutral grounding小电流接地
1.A complex ground fault line selection device insmall current neutral grounding network;一种复合型微机小电流接地选线装置研制
2.The single-phase grounding fault frequently occurs insmall current neutral grounding power systems,it is necessary to select the faulted circuit as soon as possible.单相接地故障在小电流接地系统中出现比较频繁,尽快地选出故障线路对电网运行有重要意义。
3)non-solidly earthed network小电流接地
1.A new approach to single phase to ground fault section location based on transient signals in anon-solidly earthed network is presented.提出一种适用于配电系统架空线路的小电流接地故障区段定位新方法。
2.The structure, work principle and field application of a monitoring system for earth fault innon-solidly earthed network are presented.介绍一种小电流接地故障监测系统的构成、工作原理及现场应用情况。
4)small current grounding system小电流接地
1.Review of fault line detection ofsmall current grounding system;小电流接地系统故障选线方法综述
5)indirectly grounding power system小电流接地电网
6)non-direct-ground system小接地电流电网
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。
