CAJ | 학술논문

大容量变压器直流电阻试验后，会在变压器铁心中留有剩磁，本文对变压器直流电阻试验后产生的剩磁原因以及由于剩磁的存在对变压器的投运造成的危害进行了分析，提出了目前几种消磁的技术手段和措施，对比分析了消磁取得的效果并通过实例进行了验证。结果表明：采用正反向直流衰减法可消除90%以上的变压器直流电阻测试所造成的剩磁。
대용량변압기직류전조시험후，회재변압기철심중류유잉자，본문대변압기직류전조시험후산생적잉자원인이급유우잉자적존재대변압기적투운조성적위해진행료분석，제출료목전궤충소자적기술수단화조시，대비분석료소자취득적효과병통과실례진행료험증。결과표명：채용정반향직류쇠감법가소제90%이상적변압기직류전조측시소조성적잉자。
After direct-current resistance test on large capacity transformer,residual magnetism will be left in transformer core,so analyzes the causes and the hazard of residual magnetism on transformer commission. puts forward several current degaussing technical measures. comparatively analyzes degaussing effects and verifies by the examples. The result shows that using positive and negative DC currents attenuation method,can eliminate more than 90% of the remanence produced by transformer DC resistance test.