变压器绝缘电阻降低问题的试验研究

Study on lowering of transformer insulated resistance

某变电所1台大型电力变压器在投入运行后,其绝缘电阻逐年下降。通过对变压器油进行色谱分析,试验各项指标无异常,但油中含有大量微生物。采用高效吸附剂处理变压器油,效果良好。

Its insulated resistance has decreased year by year after a large capacity transformer put into use in a substation. The results of chromatographic analysis of transformer oil showed that all kinds of index are acceptable; however there is lot of microorganism in oil. Using high efficient absorbent to handle the transformer oil is a correct way, which solve that problem.