110kV分级绝缘变压器中性点过电压保护探讨  

On over-voltage protection for neutral of 110 kV graded insulated transformers

作　　者：张文峰[1] 

机构地区：[1]中山电力工业局,广东中山528400

出　　处：《广东电力》2000年第1期5-7,共3页Guangdong Electric Power

摘　　要：传统的分级绝缘变压器中性点过电压保护按氧化锌避雷器加水平棒间隙配置，在运行中未能达到满意效果。对此，结合实例进行了分析，并提出了根据实际综合考虑的分级绝缘变压器中性声、过电压保护的有效方式。ZnO arresters are usually used together with horizontal rod gaps to provide over-voltage protection for neutral of 110 kV graded insulated transformers. However, the performance of this protective mode is not satisfactory. Based on operational examples, analysis on such mode is conducted and suggestions in view of different conditions are presented.

关 键 词：变压器 中性点 过电压保护 分级绝缘结构 

分 类 号：TM403.3[电气工程—电器] TM862