1) phase-to-ground fault detection
单相接地故障检测
1.
It is used in phase-to-ground fault detection for neutral ungrounded system.
小波变换克服了傅里叶分析的缺陷,能同时对时频局部化,具有很强的信号特征提取功能,可将其应用到小电流接地电网单相接地故障检测中。
2) the single-phase breakdown earth phase
单相故障接地相
1.
In the three-phase power supply system in mining wells,the method to detect the single-phase breakdown earth phase in the system of neutral point unconnected to earth is the next to the phase with the highest voltage in the three-phase voltage is the breakdown phase.
在矿井三相供电系统中,中性点不接地系统中单相故障接地相的判断法:三相电压中以指示值最高相为依据,按相序顺序往下推移一相才是故障相。
3) grounding fault detection
接地故障检测
1.
Loop net of DC system is an important factor in the grounding fault detection.
直流系统环网是接地故障检测中的一个关键因素。
4) Single-phase earth fault
单相接地故障
1.
Study on line-selection of zero sequence full current for single-phase earth fault in 6～10kV lines;
6～10kV线路单相接地故障零序全电流选线研究
2.
A simulation test circuit with lumped parameters is designed for the research on the characteristic of arc self-extinction caused by single-phase earth fault occurred in 10kV distribution network.
设计了研究10kV配电网单相接地故障电弧自熄特性的集中参数模拟试验回路,针对集中参数模拟回路和分布参数实际系统,对单相接地故障下的恢复电压峰值及其上升速度进行了数值仿真,分析了模拟回路与实际系统的等效性。
3.
The principles of using signal injection method to detect single-phase earth fault of distribution network at present are compared and analyzed.
对目前配网采用信号注入法检测单相接地故障的原理进行比较分析。
5) single-phase grounding fault
单相接地故障
1.
A virtual value method of locating single-phase grounding fault section of 10kV feeders in power distribution system;
配电网10kV线路单相接地故障区段定位的有效值法
2.
A more accurate fault model based on the distributed parameters of non-solidly grounded system is presented to analyze the transient characteristics of single-phase grounding fault and to improve the faulty feeder selection criterion based on transient signals.
提出了一种基于线路分布参数的小电流接地系统的高精度故障模型,用于分析单相接地故障产生的暂态信号特征及进一步完善基于暂态信息的小电流接地故障选线判据。
3.
The self-extinguishing of the arc caused by a single-phase grounding fault depends mainly on the amplitude of the residual current at grounding point.
可自恢复性单相接地故障点的电弧是否能自然熄灭的决定因素是接地故障残流的大小。
6) single-phase-to-ground fault
单相接地故障
1.
Detecting single-phase-to-ground fault feeder in Compensation Networks;
补偿电网单相接地故障选线
2.
Application of fuzzy set theory to single-phase-to-ground fault line detection;
应用模糊理论实现配电网单相接地故障判别
3.
In order to obtain a better application of low resistance grounding system to improve the safety and reliability of distribution network, the author investigated different characteristics of the power distribution network with neutral grounding through small resistors or petersen coil in the event of single-phase-to-ground fault, as well as the difference between the protecting methods.
为了更好地应用小电阻接地方式来提高配电网系统的安全性、可靠性,笔者研究了中性点采用小电阻接地和消弧线圈接地的配电网在发生单相接地故障时的不同特点以及保护方式的差异。
补充资料：故障检测
分子式：
CAS号：
性质：对故障诊断中所需的各种信号进行检测的过程。是一门应用型的边缘学科，它的理论基础是现代控制理论、计算机工程、数理统计、信号处理、模式识别、人工智能以及相应的应用学科。主要方法分基于系统动态模型的方法和不依赖于动态模型的方法。其中后者又分为：(1)直接测量系统的输入输出；(2)基于因果关系的信号处理方法；(3)基于专家系统的方法；(4)基于故障树的诊断方法；(5)基于模式识别的诊断方法；(6)基于模糊数学的诊断方法；(7)基于人工神经元网络的方法。
CAS号：
性质：对故障诊断中所需的各种信号进行检测的过程。是一门应用型的边缘学科，它的理论基础是现代控制理论、计算机工程、数理统计、信号处理、模式识别、人工智能以及相应的应用学科。主要方法分基于系统动态模型的方法和不依赖于动态模型的方法。其中后者又分为：(1)直接测量系统的输入输出；(2)基于因果关系的信号处理方法；(3)基于专家系统的方法；(4)基于故障树的诊断方法；(5)基于模式识别的诊断方法；(6)基于模糊数学的诊断方法；(7)基于人工神经元网络的方法。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条