接地选线,Fault Line Selection
1)Fault Line Selection接地选线
1.Research on fault line selection in network grounded with arc extinguishing coil消弧线圈接地系统的单相接地选线研究
2.The phase comparison between fault feeder and healthy feeder is one of important criteria in fault line selection for neutral non-effective grounding systems.小电流接地系统发生单相接地故障时,故障线路与健全线路在特征频段内零序电流的相位差别是接地选线判据的重要依据之一。
3.A microcomputer fault line selection device using Intel 80296 and CPLD is designed.该装置采用了一种新的接地选线的算法——电流融合算法,该算法将补偿电流与故障零序电流矢量求和,根据故障与非故障线路矢量和分布在不同区间作为选线判据。
英文短句/例句
1.Research on fault line selection in network grounded with arc extinguishing coil消弧线圈接地系统的单相接地选线研究
2.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
3.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
4.Research and Constitution of Simulative Experimental System for Small Current Fault Detection;小电流接地选线模拟实验系统的研制
5.The Disquisition on Inspection to DC System and Device to Earthing Fault;直流系统监控和接地选线装置的研究
6.Study of Earth Fault Detection in Small Current Grounding Network Based on Evidence Theory;基于证据理论的小电流接地选线研究
7.Fault line detection for single-phase-to-earth faults based on improved grey relation analysis基于灰色关联的小电流接地选线研究
8.Study on Single Phase Ground Fault Detection in Neutral Resonant Grounded Distribution Networks;谐振接地系统单相接地故障选线研究
9.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
10.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
11.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
12.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
13.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
14.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
15.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
16.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
17.Single-phase-to-ground Fault Line Detection in Non-effectively Earthed Neutral System Based on Agent;基于Agent的小接地电流系统单相接地故障选线
18.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
相关短句/例句
line selection for grounding接地选线
3)fault detection接地选线
1.Because of the faint fault current,it’s a problem forfault detection.本文针对小电流接地系统单相接地选线的问题,提出了一套分布式选线的实现方式,主要内容如下: 针对小电流接地系统发生单相接地时,系统的故障特征进行了分析,分别分析了中性点不接地和经消弧线圈接地系统发生单相接地故障时的情况。
4)earthing line selection接地选线
1.Single-phaseearthing line selection based on first-harmonic current injection;基波电流注入法实现的单相接地选线
5)grounding fault line selection接地选线
1.A new incorporate device of automatic arc-suppression coil andgrounding fault line selection based on module structure is developed to improve its application flexibility and reliability.研制了基于模块化结构的消弧接地一体化装置,将消弧线圈和接地选线做成完全独立的两个模块,以提高应用的灵活性和可靠性,模块之间无需相互通信,以零序电压作为同步信号,消弧线圈配合接地选线协调动作,使选线的准确率得到大幅度的提高。
2.An incorporate device of automatic arc-suppression coil andgrounding fault line selection based on modularity structure was developed to improve its reliability and flexibility.为提高可靠性和使用的灵活性,开发了一种模块化结构的自动消弧线圈及接地选线成套装置,给出了二者的硬件设计和接地故障子程序设计。
6)grounding line selection接地选线
1.the paper expounds the principle of the traveling wave line selection and its application in single phasegrounding line selection for distribution network by the example.介绍了故障行波概念和行波理论,分析了行波测距以及行波选线的基本原理,比较了传统工频电气量技术与行波技术在故障测距与接地选线方面的优缺点。
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。
