CAJ | 학술논문

正确判断故障类型是正确进行接地选线的前提和关键.以往国内多侧重于对接地选线方法的研究,而对选线的研究比较少.单相电弧接地故障是中压配电网中的主要故障形式.由于电弧的复杂性,以往的研究分析中,还没有很有效的方法可以辨识.为了进行故障辨识方面的研究.提出一种依据故障相电压稳态波形中基波含量大小来区分电弧故障的方法,与现有的比较中性点电压与故障前相电压相角差的方法相配合,就能有效地区分出不同类型的接地故障.通过PSCAD仿真验证,结论符合实际,表明辨识方法是有效的.
정학판단고장류형시정학진행접지선선적전제화관건.이왕국내다측중우대접지선선방법적연구,이대선선적연구비교소.단상전호접지고장시중압배전망중적주요고장형식.유우전호적복잡성,이왕적연구분석중,환몰유흔유효적방법가이변식.위료진행고장변식방면적연구.제출일충의거고장상전압은태파형중기파함량대소래구분전호고장적방법,여현유적비교중성점전압여고장전상전압상각차적방법상배합,취능유효지구분출불동류형적접지고장.통과PSCAD방진험증,결론부합실제,표명변식방법시유효적.
Correctly judge the type of fault is the premise and the key of correct fault line selection. In the past, few research has been done in this area. People paid more attention to the research on the method of fault line selec-tion. The single-phase arcing fault is the main fault form in medium voltage distribution networks. For its complexi-ty, there is no effective method to identify this fault. This paper proposed a new method to distinguish the arcing fault based on the fundamental component of the fault voltage steady waveform. Combining with the method based on the phase angle difference between the neutral voltage and the phase voltage, different types of grounding fault can be I-dentified. At last, the effect of this identification method was validated by simulation on PSCAD.