一起变压器套管下引线线夹断裂事故分析

华电技术 ›› 2011, Vol. 33 ›› Issue (7): 59-60.

一起变压器套管下引线线夹断裂事故分析

舒逸石，王薇，于培杰

安阳供电公司，河南安阳455000

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-07-25 发布日期:2011-07-25

Analysis on a fracture accident of transformer bushing downlead clamp

SHU Yishi, WANG Wei, YU Peijie

Anyang Power Supply Company, Anyang 455000, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-07-25 Published:2011-07-25

摘要/Abstract

摘要： 介绍了PST-1200系列数字式变压器保护装置的保护配置。通过分析某220kV变电站主变压器高压侧套管下引线线夹铜铝过渡处断裂事故的动作逻辑，指出了当发生断线故障时，保护装置因未能感受到故障电流而不会启动或动作于跳闸。针对常见的断裂事故提出了改进措施，有利于减少事故的发生。

关键词: 变压器保护, 套管下引线, 线夹, 断裂

Abstract: The configuration of the PST1200 series digital transformer protection device was introduced. In a 220kV substation, an accident of main transformer highvoltage side bushing downlead clamp fracture was happened in its copperaluminum transitional zone. The corresponding action logic of the protection device was analyzed; and it was pointed out that when the circuitfracture accident happened, the protection device should not activate or act to trip because of that the device can not feel the fault current. Aiming at common fracture accidents, some improvement measures were put forward, which is helpful for decreasing accident.

Key words: transformer protection, bushing downlead, clamp, fracture

舒逸石;王薇;于培杰. 一起变压器套管下引线线夹断裂事故分析[J]. 华电技术, 2011, 33(7): 59-60.

SHU Yishi;WANG Wei;YU Peijie. Analysis on a fracture accident of transformer bushing downlead clamp[J]. Huadian Technology, 2011, 33(7): 59-60.

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