牵引变压器的过负荷能力及容量的合理选择  

The Faulty Operation Statistics and its Countermeasures on Differential Protection of Traction Transformer

作　　者：曹建设[1] 杲秀芳[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司

出　　处：《电气化铁道》2008年第1期10-13,共4页Electric Railway

摘　　要：牵引变压器的过负荷能力一般受限于变压器绕组最热点温度和顶层油温。在评价牵引变压器的过负荷能力时,所选择的典型负荷曲线必须合理,使之能够正确反映线路的牵引变压器运行状况。本文以一种典型负荷曲线为例,对牵引变压器的温升计算和寿命损失做了研究,并从安全性和经济性角度对牵引变压器容量的合理选择进行了探讨。The overload ability of traction transformer is generally limited by winding hottest-spot temperature and top oil temperature. The typical load curve which is selected for evaluating the overload ability of traction transformer must be reasonable, it should reflect accurately the operation status of traction transformer. One of the typical load curves is taken as an example to study the temperature rise and loss of life for the traction transformer, and the rational selection of capacity for traction transformer is discussed from the two viewpoints of security and economy

关 键 词：典型负荷曲线 过负荷 线圈最热点温度 牵引变压器 

分 类 号：U224[交通运输工程—道路与铁道工程]