文档介绍：第 36 卷第 4 期电网技术 Vol. 36 No. 4
2012 年 4 月 Power System Technology Apr. 2012
文章编号:1000-3673(2012)04-0256-04 中图分类号:TM 86 文献标志码:A 学科代码:470·4034
110 和 220 kV 不接地运行变压器中性点保护方式
林耀洲 1,陈秀娟 2,陈维江 3,颜湘莲 2,葛栋 2,张翠霞 2,叶宽 3
(,福建省厦门市 361000;,
北京市海淀区 100192;,北京市西城区 100031;
,北京市丰台区 100076)

A Protection Mode for Ungrounded Neutral Points of 110 kV and 220 kV Power Transformers
LIN Yaozhou1, CHEN Xiujuan2, CHEN Weijiang3, GU Xianglian2, GE Dong2, ZHANG Cuixia2,YE Kuan4
(1. Power Transmission&Distrubition Equipment Maintenance Breau of Fujian Electric Power , Xiamen 361000, Fujian Province,
China; 2. China Electric Power Research Institute, Haidian District, Beijing 100192, China; 3. State Grid Corporation of China, Xicheng
District, Beijing 100031, China; 4. Beijing Electric Power Test and Research Institute, Fengtai District, Beijing 100076, China)
ABSTRACT: To protect the insulation of ungrounded neutral 压下,可控间隙和避雷器均不动作,变压器中性点绝缘能够
points of 110kV and 220kV power transformers and remedy 耐受。可控间隙与避雷器并联保护方式可有效保护变压器中
the defects of existing protective measures such as gap and 性点绝缘,并解决了现有保护方式存在的问题,具有一定的
arresters, a novel protective mode in which the controllable gap 工程应用价值。
is in parallel with metal oxide arrester (MOA) is mended.
关键词:110kV;220kV;变压器;不接地运行;中性点;
In this protective mode the control