大电流温升试验中铜排长度对试验误差的影响.pdfVIP

: 大电流温升试验中铜排长度对试验误差的影响 1 2 1 王 博 , 王永祥 , 吕宏锐 ( 1. 721006;2. 710061) :大电流电器设备在温升试验中需要使用截面积比较大的铜排, 大截面铜排的导热能力强, 使得铜排另端的电 源或电连接端子形成的热源对试验设备温升有较大干扰, 可能导致试验误差建立一维有限差分模型分析了大电流温升试 验中铜排长度对试品温升造成的误差,给出了为减小误差 必须采用的铜排最小长度其结论对大电流配电板设计中的温 升问题有一定参考作用 :大电流电器; 温升试验;铜排; 配电板 :T P29 : A : 1004- 373X(2009) 17- 072- 03 Error Produced by Diff erent Bus Length in Temperature Rise of Large Current Experiment 1 2 1 WANG Bo ,WANG Yongxiang , L Hongrui (1.Navy in Military Representative Office in Baoji,Baoji, 721006,China;2.Shaanxi National Defense Science Technology Industry Development Center,Xican,710061, China) Abstract: Large sectional area bus should be used in the temperature rise experiment with large- current electrical equip- ments.T he large sectional area bus has a strong ability in heating transfer,so the heat source produced by the power source or the electrical connector in the other head of the bus can interfere the heating up test result of the test equipment .A one- di- mension finite difference model is built to analyse the error of the test equipment produced by the length of the copper bus in large current heating up test.T he shortest length of the copper bus is given to put down the error. The conclusion is also useful in the heating up problem in the design of the large current switchboard. Keyw ords: large- current apparatus;temperature rise experiment; busbar;switch board 0 , 1 , ,, 1 , 1 K ,