1) high-impedance earth faults
线路高阻接地
1.
Based on the DC line protection and VDCL(voltage dependent current limit) function and combined with examples occurred in Tian-Guang HVDC transmission project, high-impedance earth faults of different impedance are analyzed.
基于天广直流输电工程直流线路保护和低压限流功能,结合事故实例,对不同接地阻抗值的线路高阻接地故障的过程和保护动作情况进行了分析;最后,针对某些情况下,后备保护会先于线路高阻接地主保护——线路差动保护动作、直接闭锁直流系统的缺陷,提出了改进建议。
2) high-resistance grounding
高阻接地
1.
Aiming at high-resistance grounding faults,the operating characteristics of phase current differential protection and zero-sequence current differential protection are analyzed,and a conclusion is obtained that when high-resistance grounding,zero-sequence current differential protection is more sensitive than phase current differential protection.
针对高阻接地的特殊故障,仔细分析了分相电流差动保护和零序电流差动保护的动作特性,并得出结论:高阻接地时,零序差动比相电流差动更灵敏。
3) grounding with high resistance
高阻接地
1.
Based on probability analysis,a new method of fault detection and location in distribution network grounding with high resistance is proposed in this paper.
针对配电网系统的单相高阻接地故障,提出了一种基于概率分析的故障检测与定位方法。
4) high resistance grounding
高阻接地
1.
With comparing different methods of grounding and considering different factors, high resistance grounding was selected.
经过对各种接地方式的比较,综合考虑了各方面的因素之后,选择了高阻接地这一适合于船舶电力系统的接地方式。
2.
The design features of service power system in Huizhou Gas Turbine Power Plant are as follows:to adopt two-winding transformer for high voltage service power,the bus section for medium voltage service power is designed as one section;to adopt high resistance grounding for the neutral point of high voltage service power .
惠州燃机电厂厂用电系统的高压厂变选用双卷变压器、中压厂用母线段设计为一段、高压厂用电系统中性点采用高阻接地方式、不设高压公用母线、每台机组均设置一段交流保安电源,这种厂用电系统设计合理、操作维护方便。
3.
Taking the faults of high resistance grounding before and after the capacity expansion of Datong-Qinhuangdao Line,and starting from the introduction of current increment protection principles,this paper analyzes the problem of high resistance grounding in tractive power supply system,and probes into the significance of current increment protection.
以大秦线扩能改造前后发生的高阻接地故障为例,从介绍电流增量保护原理入手,分析了牵引供电系统高阻接地问题,探讨了电流增量保护的意义。
5) high impedance grounding
高阻接地
1.
A new algorithm of fault allocation for high impedance grounding is presented,which is based on the math model of power line described by differential equation and uses the information of single terminal to allocate the fault of HV power transmission line.
提出了一种适用于高阻接地故障的故障测距新算法。
补充资料：线路
1.亦作"线路"。 2.细小狭窄的道路。 3.门路;途径。 4.电流﹑运动物体等所经过的路线。
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