理论分析和仿真计算表明，使用电压量的选相元件能够正确地判别各种故障类型，满足高压线路保护的需要。
Theory analysis and simulation results show that the new phase selector can determine fault types properly and be used in transmission line protective relay.
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
构造了新型的用于高压输电线路保护的故障选相元件。
A new faulty phase selector for high voltage power transmission system is presented.
论文根据上述分析设计了基于故障分量采样值差动保护、故障分量相量差动保护、常规电流差动保护和零序电流差动保护自适应的保护方案。
The setting schemes of the resistance coefficient and the least trip differential current for the current differential protection based on sampled values using fault component are discussed.
在简要介绍直流接地过流保护原理的基础上，分析了换流变阀侧接地故障的故障特征以及换流阀换相过程对故障电流的影响。
By employing the DC earthed protection theory, this paper analyzes the characteristics of the converter transformer earth fault and the influence of converter commutation.
该保护器以单片机为核心，具有漏电、过载、断相、短路等多种故障自动诊断及串行通信等功能。
It takes microprocessor as a core functions at automatic diagnosis of failures, such as overload, short phase and short circuit, and serial communications.
WJJL1智能过流继电器是典型的电子、电器技术相结合的产品。具有过电流、短路、缺相、过欠压、欠电流、相失衡及启动故障等保护功能。
WJJL1 intelligence over current relay is a typical electronic apparatus which has over current, short circuit, over voltage, under curent, phase faults and starting failure protective functions.
仿真结果表明，对于两端供电超高压长线，带电容补偿的故障分量相量差动保护具有明显地高灵敏度和选择性；
The result of simulation indicates that fault componentdifferential protection with capacitive current compensation has high sensitivity and good selectivity on al…
此断相保护装置可广泛应用于无缺相保护的电气设备中，使设备控制部件免于遭受断路故障的不必要的损坏。
The phase-failure protection can be widely used in the electrical equipment without open-phase protection to make the control part free of the unnecessary damage of the open circuit failure.
针对三相异步缺相而烧毁的现象，分析了故障的原因，并提出一种新的缺相保护电路。
The paper points out the unconventionality phenomena of three-phase asynchronism electro motor when it goes wrong and analyzes the reasons...
针对三相异步缺相而烧毁的现象，分析了故障的原因，并提出一种新的缺相保护电路。
The paper points out the unconventionality phenomena of three-phase asynchronism electro motor when it goes wrong and analyzes the reasons...
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