直流输电接地极线路故障测距系统原理及工程实现

Principle and Engineering Implementation of Fault Location System for HVDC Grounding Electrode Line

接地极线路故障会对直流输电系统的运行造成严重影响,接地极线路故障后,精确的故障点测距对系统安全稳定运行具有重要意义。与常规交直流线路故障相比,直流接地极故障电压/电流行波波形特征具有较大差异,针对上述问题,本文提出了基于故障暂态行波和附加脉冲源故障测距方法相结合的接地极引线故障测距方法,并提出接地极引线故障测距系统实现方案。

Grounding electrode line fault will seriously affect the operation of HVDC system.After grounding electrode line fault,accurate fault location is of great significance to the safe and stable operation of the system.Compared with the conventional AC/DC line fault,the characteristics of DC grounding electrode fault voltage/current waveform are quite different.In view of the above problems,this paper proposes a grounding electrode lead fault location method based on the combination of fault transient traveling wave and additional pulse source fault location method,and proposes the implementation scheme of grounding electrode lead fault location system.