赣州电网主变中性点取消独立间隙电流互感器可行性分析

Feasibility of abandoning gap current transformer in Ganzhou Power Grid neutral point main transformer

在110kV电网中,主变中性点保护广泛采用由零序电流互感器与间隙电流互感器为基础构成的中性点零序保护和间隙电流保护。本文在分析这两种保护的原理和实现过程以及可能产生故障的前提下,探讨取消独立间隙电流互感器的可行性。

In 110 kV power grid, neutral zero-sequence protection and clearance current protection based on zerosequence current and gap current transformer were popularly applied in neutral point main transformer. The feasibility of abandoning gap current transformer was analyzed according to the principle and operation of protection.