1) Object or obstacle marking
路障标线
2) obstruction approach marking
接近障碍物路面标线
3) line fault
线路故障
1.
The problems of frequency modulation were studied,including over modulation and long transition time after line faults.
对某电网两起线路故障后引起电网频率的超调量明显偏大、过渡时间过长而暴露的机组调频方面的问题进行了全面分析,说明了完善DEH机组调频控制功能、改善调节特性对保证供电质量、提高电网调频品质有很大的作用。
2.
Based on the characteristics of line protection of HVDC power transmission, the paper describes the characteristics and disposition principles of DC line fault as well as the action sequence of DC line protection.
针对高压直流输电线路保护的特点,较全面的概述了直流线路故障特征以及直流线路故障的配置原理和直流线路保护动作顺序,比较分析了ABB公司和Siemens公司的行波保护判据,结合天广直流输电工程,采用MATLAB对天广直流输电工程中Siemens公司的行波保护进行仿真分析。
3.
In this paper,the characteristic of the main parameters during the process of the line fault in metallic return operation is discussed and confirmed on RTDS first;then,based on the DC protection system of Tian-Guang,Gao-Zhao and Xing-An HVDC transmission projects,the correlative protection is introduced.
首先从理论上分析了直流输电系统单极金属回线运行方式下发生线路接地故障时各特征量的变化情况,并借助RTDS实时仿真系统进行了验证;接着以此为依据,以天广、高肇、兴安等由德国Siemens公司设计的直流保护系统为例,介绍了针对这一故障设置的相关保护;然后结合运行实例和仿真,分析了这些保护存在的缺陷如线路后备保护配合不当和无法快速、准确地检测金属回线线路故障等,最后还提出了一些改进建议,并讨论了各种方案的优缺点。
4) line failure
线路故障
1.
Analyzes 35kV line failure in Hanqiao power transformer substation and the cause of 10kV capacitor protecting action.
分析了韩桥变电站由于35kV线路故障,导致10kV电容器保护动作的原因,并根据分析的结果提出了相应的解决办法。
5) DC line fault
线路故障
1.
Based on the arithmetic of wave front protection which is used as the main protection of DC line fault in Tian-Guang HVDC transmission system,and combined with the transient recorder and data in DC line fault,the action process of wave front protection is discussed in this paper.
行波保护是天广直流输电系统的线路主保护,首先介绍了行波保护的算法以及根据运行实际情况对其所做的改进,然后根据故障暂态录波和数据分析了行波保护的动作过程,计算结果表明,天广直流保护系统采用的行波保护能够快速准确地检测直流线路故障。
2.
Based on the operation of HVDC projects in China Southern Grid and State Power Grid, DC line fault recovery (forced retard) is analyzed.
结合南方电网公司和国家电网公司直流工程的运行情况,分析了目前直流线路故障再启动功能现状,发现存在正常双极运行时负极再启动功能退出、可重启的故障范围小等问题。
6) faulty line
故障线路
补充资料：路障
1.路上设置的障碍物。
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