二次电压回路检查方法的探讨  

Discussion on detection of secondary voltage circuit

作　　者：周建军[1] 樊高瑞[1] 樊庆玲[1] 魏丽君[1] 

机构地区：[1]南阳供电公司,河南南阳473009

出　　处：《电力系统保护与控制》2010年第3期133-135,共3页Power System Protection and Control

摘　　要：二次电压回路接线复杂多变,由于现场条件限制,无法进行加压模拟实验,一旦接线出现错误,会出现电压互感器不能正确反映系统运行电压,甚至可能导致高压保险熔断、烧毁互感器等严重后果。探讨了目前电压互感器二次回路中存在的各类典型问题,并对其可能产生的各种后果进行了分析。指出了各类电压互感器在设计和运行过程中应注意的事项,提出了对电压互感器进行极性试验和二次回路加压检查的方法,实现了对二次电压回路全面有效的检查,确保了接线正确性。Secondary voltage circuit is complicated, restricted by site condition, simulation test is diffcult to be carried out,consequences suchas fuse blow, burning upoftransformer arise. Thispaper discusses typical problems of secondary voltage circuit and analyzes the reasons. Proceedings in design and operation are presented as well. A method of polarity test and electrifying is introduced to check-up secondary voltage circuit, inspection ofsecondary voltage circuit is achieved, and correctness is assured.

关 键 词：电压互感器 二次回路 电压切换继电器 断线监测 

分 类 号：TM451[电气工程—电器]