110kV变压器中性点零序保护配置方式研究  

Research on zero-sequence protection device arrangement method of neutral point of 110 kV transformer

作　　者：刘超[1] 何林海[1] 崔晓云[1] 李春生[1] 马晓炜[1] 

机构地区：[1]新疆油田勘察设计研究院,新疆克拉玛依834000

出　　处：《电力系统保护与控制》2010年第2期114-117,共4页Power System Protection and Control

摘　　要：目前大多数的1l0kV变电所,只装设了中性点棒间隙而没有相应的保护。如果没有间隙保护,当终端变压器中性点间隙抢先放电而又无法持续放电时,带电源的中性点不接地变压器将无法脱离故障电网。针对上述问题,在分析变压器零序保护配置原理的基础上,对110kV变压器中性点接地方式以及目前电网110kV变压器零序保护设计存在的安全隐患等问题进行了探讨,提出改善变压器零序保护配合的措施。The most 110 kV substation are just installed with neutral point gap and without corresponding protection. If there is no use of protection gap, when terminal transformer neutral point gap discharge and the discharge can not be sustained, the transformer with the power of the neutral grounding will not be disconnected from the fault power grid. To solve these problems, based on the analysis of transformer zero-sequence protection configuration, modes of the 110 kV transformer neutral point grounding and security risks of the current zero-sequence protection of 110 kV transformer and other issues are discussed and the measures to improve the transformer zero-sequence protection coordination are put forward.

关 键 词：变压器 中性点 零序保护 

分 类 号：TM862[电气工程—高电压与绝缘技术]