南昆铁路客运专线牵引变电所27.5kV户外式高压熔断器故障原因分析与应对措施  

Causes Analysis and Corresponding Measures of 27.5 kV Outdoor High⁃voltage Fuse Fault on the Traction Substation of Nanning-Kunming Railway Dedicated Passenger Line

作　　者：马红学 王勇 罗崇文 MA Hongxue;WANG Yong;LUO Chongwen

机构地区：[1]中国铁路昆明局集团有限公司昆明供电段,云南昆明650217

出　　处：《铁道技术监督》2025年第1期50-53,共4页Railway Quality Control

摘　　要：针对南昆铁路客运专线云南段牵引变电所27.5kV电压互感器高压熔断器频繁熔断,从高压熔断器类型、额定电流容量、瓷套管安装方式3个方面分析原因,提出合理选择高压熔断器类型和电流容量、改进瓷套管安装方式、改进压紧弹簧载流能力的整治措施,并在现场实施整治措施。结果表明,整治措施能够有效减少高压熔断器熔断故障的发生。In view of the frequent fusing of high-voltage fuses of 27.5 kV voltage transformer of the traction substa-tion in the Yunnan section of Nanning-Kunming railway dedicated passenger line,the causes are analyzed from three aspects of high-voltage fuse type,rated current capacity and the installation method of the porcelain bushing.The re-medial measures are proposed to reasonably select the type and current capacity of high-voltage fuse,improve the in-stallation method of porcelain bushing,improve the current-carrying capacity of the pressure spring,etc.,which are implemented at the site.The results show that the remedial measures can effectively reduce the occurrence frequent of melt failures of high-voltage fuses.

关 键 词：牵引变电所 高压熔断器 瓷套管 压紧弹簧 

分 类 号：U224.24[交通运输工程—道路与铁道工程]