EARTH LINE

So we chose earth line current for trend management .

故本文通过对具体的电缆线路进行分析，采用接地线电流法作为趋势管理的手段。

Vibration analysis and rotor design of large line start permanent magnet synchronous motor Accurate calculation of rare earth line start PMSM d , q reactance parameter

永磁同步电动机振动分析及转子设计异步起动稀土永磁同步电机电抗参数准确计算

Next , the designing program which takes the DC component method as the main point , and the earth line current method as the supplementary aspect through research of the above different kinds of on line monitoring method and analysis the theory .

其次通过对以上各种在线测量方法的研究、理论分析，提出了以直流分量法为主，接地线流法为辅的设计方案。

An electronic management display system of grounding status in substation is studied , which is to prevent two kinds of mal-operation of closing grounding-switch and articulating earth-line , sending the electricity by taking electricity with grounding switch and closing earth line .

为防止在变电站中带电合接地刀闸、挂接地线与带电接地刀闸、接地线合闸送电2类误操作事故，研制了一种变电站接地状态电子管理显示系统。

Distribution Grid Earth Fault Line Detection Study by Traveling Wave Wavelets Coefficient Maximum Polarities

行波小波系数极大值极性法接地故障选线研究

Protection for single phase to earth fault line selection for Ungrounded Power System by injecting signal

用注入法实现小电流接地系统单相接地选线保护

The S Signal Injection Method and Its Application in Single Phase to Earth Fault Line Identification and Fault Point Location

S注入法与选线定位

Scheme for Earth Fault Line Selection in Neutral Point Non-effectively Grounded System Based on Digital Substation Technology

基于数字化变电站的小电流接地故障选线实现方案

The protection for earth fault line selection and fault point location by S injecting current in neutral isolated power system is presented .

介绍了基于S注入法的小电流接地系统单相接地故障选线定位保护。

A digital substation has more advantages than a traditional substation so that higher correctness rat for earth fault line selection can be achieved more easily .

数字化变电站具备很多传统变电站自动化无法实现的优势，在此基础上，新型的小电流接地选线装置将更容易达到实现更高的选线正确率。

The patent arc-suppression coil has been adopted in this system , whose control has two basic functions : controlling arc-suppression and detecting earth fault line .

该系统装置采用新型专利双分裂大漏抗可控调节消弧线圈作为消弧补偿部件，控制器集成有消弧控制和接地故障选线两大功能。

In order to correctly indentify single phase to earth fault line and locate fault point as soon as possible , different protections based on different principles have been running in power system in our country .

迅速准确地查找小电流接地系统单相接地故障线路和故障点的位置，已有不同原理的选线定位保护应用于我国电力系统中。

Then the idea of integral control of automatic resonance and single-phase earth faulted line selection was put forward . A Faulted Line Selection Method of Parallel Transmission Teed Line on the Basis of Differential Current

并在此基础上给出了补偿电网中消弧线圈自动调谐与单相接地故障选线一体化的综合控制思路。同杆双回线反序电流特点及其在T形线路测距中的应用

The potential distribution of conductor with respect to earth along telecommunication line provided with neutralizing transformer

加装中和变压器后通信导线沿线对地电位的分布

The sampling data of arcing fault of earth of transmission line is analyzed with R / S discussed .

利用R/S方法研究了输电线路弧光接地故障采样信号的频谱分布规律及分形维数的特点。

Finite difference calculations of transient time domain electromagnetic field of a two dimensional earth for a line source of current excitation

线源二维时间域电磁响应的有限差分解

In order to evaluate the protection effect of NT , it is paramount to study and analyze the potential distribution of conductor with respect to earth along telecommunication line with NT .

为了评定中和变压器的保护效果，必须分析研究加装中和变压器后通信导线对地电位分布的问题。

The paper analyzes the current problems of electrification on the metallic shell surfaces of electric equipment in actual Low Voltage Distribution System , and then regards no grounding protection and larger grounding resistance as the main causes for these problems in the earth free main line .

对现行的低压配电系统中的电气设备外壳带电原因进行了分析，认为在不接地的配电网中，没有采取保护接地措施和设备接地电阻过大是设备带电的主要原因；

Venus , the Sun and Earth all moved into line .

金星、太阳和地球都到了一条直线上。

The axis of the earth is an imaginary line through the north pole and the South pole .

地球的自转轴是一条贯穿北极和南极的假想轴。

Automatic location for earth fault of transmission line of converting station

35kV变电站接地故障线路的自动查找

A New Method of Small-attenuation Measurement on the Earth Station Waveguide Feed Line

地球站波导馈线小衰减测量的一种新方法

Latitude is the angle from the center of the Earth to some east-west line on the Earth 's surface .

纬度表示从地球中心到地球表面东西方向线之间的角度。

Application of Vibration Absorbing Blasting Technology During The Excavation of Transition Section of Tunnel from Rock to Earth in North Main Line of Yellow River Diversion Project in Shanxi Province

减振爆破技术在山西引黄北干岩土过渡段隧洞开挖中的应用

Human participation was involved in the various task procedures from power-off , earth lines grounding , line detection to earth lines removing and it led to low work efficiency .

在从停电、挂接地线、检修到完工、接地线拆除等多项任务流程中都采用人工直接参与方式，工作效率很低；

The results show that the factors , such as ground conditions , construction techniques and the degree of site control , all affect soil disturbance , especially the degree of site control including jacking force , earth pressure , pipe line alignment , and slurry pressure .

测试结果表明土体扰动受土质条件、施工技术和现场控制程度的影响，其中现场控制程度（包括顶力、土压力、管线纠偏和注浆压力）的影响最大。

Automatic tuning extinction coil realizes automatic measurement for capacitance current of power network and automatic tracking compensation for single-phase earth fault , which enhances the security of network operation and the reliability of power supply , but brings much difficulty to single-phase earth fault line selection .

自动调谐消弧线圈实现了电网电容电流测量的自动化以及单相接地故障的自动跟踪补偿，提高了电网运行的安全性和供电可靠性，却给电网的单相接地故障选线带来很大的困难。