CAJ | 학술논문

对配电网采用什么接地方式，目前业界还没有完全形成共识。讨论了中性点接地方式与分类问题、接地方式对供电质量与人身安全的影响、小电流接地故障选线与定位以及利用瞬时性接地故障信息实现在线监测等问题，指出小电流接地方式能够减少50%以上的故障停电次数，小电阻接地方式在人身安全方面并没有优势，长期以来制约小电流接地故障选线技术的难题已经得到解决，因此，配电网优先考虑采用小电流接地方式，特别要杜绝将已经采用小电流接地的架空网络或架空线路与电缆混合网络改为小电阻接地方式。
대배전망채용십요접지방식，목전업계환몰유완전형성공식。토론료중성점접지방식여분류문제、접지방식대공전질량여인신안전적영향、소전류접지고장선선여정위이급이용순시성접지고장신식실현재선감측등문제，지출소전류접지방식능구감소50%이상적고장정전차수，소전조접지방식재인신안전방면병몰유우세，장기이래제약소전류접지고장선선기술적난제이경득도해결，인차，배전망우선고필채용소전류접지방식，특별요두절장이경채용소전류접지적가공망락혹가공선로여전람혼합망락개위소전조접지방식。
A consensus has not been reached on the adaption of the natural neutral grounding modes of distribution networks.The classification of grounding modes,the impacts of grounding modes on power quality and human safety,the faulty feeder identification and fault location techniques,and the online monitoring using transient fault information are discussed.It is pointed out that the small current grounding can reduce more than 50% fault interruptions; the low resistance grounding does not have significant advantages on human safety due to significant breakthroughs of the faulty feeder identification and fault location techniques in recent years.The small current grounding shall be considered as the preferable option for distribution networks.The switching over for small current grounding to low resistance grounding for networks containing overhead lines must always be avoided. This paper is supported by National Natural Science Foundation of China(No.51177096).