电气试验中变压器绕组错误接线的分析  

Analysis of Wrong Wiring of Transformer Winding in Electrical Test

作　　者：周晓梅 ZHOU Xiaomei(Shizuishan Power Supply Company,State Grid Ningxia Electric Power Co.,Ltd.,Shizuishan 753000,China)

机构地区：[1]国网宁夏电力有限公司石嘴山供电公司变电检修中心,宁夏石嘴山753000

出　　处：《电工技术》2022年第8期161-163,共3页Electric Engineering

摘　　要：在电气试验中,变压器发生接线错误会导致结果不准确,为此提出电气试验中变压器绕组的错误接线判断方法。首先,测量变压器绕组直流电阻,计算相间或线间电阻差异,判断电阻直流变化。然后,提取变压器绕组振动特征,建立能力谱特征矩阵。最后,获取介质损耗因数,通过反接线方式判断错误接线所在的位置。试验结果表明,该方法对变压器绕组错误接线情况的分析结果与实际情况相符,具有一定的有效性。In electrical tests,incorrect wiring of the transformer can lead to inaccurate results.Therefore,a method for judging the wrong wiring of transformer windings in electrical tests is proposed.Firstly,the DC resistance of transformer winding is measured,the resistance difference between phases or lines is calculate,and the DC change of resistance is judged.Then,the vibration characteristics of transformer winding are extracted and the capability spectrum characteristic matrix is established.Finally,the dielectric loss factor is obtained,and the location of the wrong wiring is determined by reverse wiring.The experimental results show that the analysis results of the wrong wiring of transformer windings by this method are consistent with the actual situation and have certain validity.

关 键 词：电气试验 变压器 绕组接线 反接线 错误接线 绕组振动特征 

分 类 号：TM41[电气工程—电器]