干式变压器铜铝线材涡流检测系统的设计与开发  

Design and Development of an Eddy Current Testing System for Copper and Aluminum Winding in Dry-type Transformer

作　　者：边美华 梁庆国 张兴森 梁世容 BIAN Meihua;LIANG Qingguo;ZHANG Xingsen;LIANG Shirong(Electric Power Research Institute of Guangxi Power Grid Co.,Ltd.,Guangxi Nanning 530023,China)

机构地区：[1]广西电网有限责任公司电力科学研究院,广西南宁530023

出　　处：《广西电力》2018年第5期52-55,72,共5页Guangxi Electric Power

基　　金：广西电网有限责任公司科技项目(GXKJXM20151011)

摘　　要：目前针对干式变压器铜铝线圈材质检测缺少一种非破坏性快速准确鉴别的方法。为此,根据干式变压器特点,结合涡流检测原理,设计开发了一套干式变压器线圈材质检测系统。该系统通过检测干式变压器线圈导线宽度和特征相位,并将检测到的特征相位与同宽度铜铝对比试样的特征相位进行对比,可确定线圈导线铜铝材质。经现场检测验证,该系统具备准确鉴别干式变压器铜铝线圈材质的能力。There is a lack of a non-destructive,rapid and accurate identification method to test the material of the copper and aluminum winding of dry-type transformer.So based on the characteristics of the dry-type transformer and combing with the principle of eddy current test,a set of dry-type transformer winding material testing system is designed and developed.By testing the conductor width and the characteristic phase of the dry-type transformer winding and comparing the characteristic phase tested with the characteristic phase of the contrast sample which has the same width,the system can determine the copper and aluminum material of the winding conductor.It is testified by field test that the system has the capability to identify accurately the material of the copper and aluminum winding of dry-type transformer.

关 键 词：并网逆变器 电网阻抗 PRBS 在线检测 

分 类 号：TM412[电气工程—电器]