中性点非有效接地系统 meaning in Chinese

system with non-effectively earthed neutral

Distribution power systems in our country are almost ineffective grounded systems , it is called small current neutral system ( scns ) . but the unique characteristics of ground - faults of the scns make it difficult to locate exactly the fault point of transmission lines
我国大多数配电网均采用中性点非有效接地系统,即小电流接地系统,但由于该系统自身的特点,其单相接地故障的检测定位成为长期困扰电力工作者的一个棘手问题。