变压器局部放电与油中气体浓度的对应关系

Relationship between Partial Discharge and Dissolved Gases Conentration in Oil

变压器内部长时间的局部放电对变压器内绝缘危害极大 ,往往会导致重大的内绝缘事故 ;目前局部放电的监测因受到电磁干扰和噪声干扰的影响 ,都没能达到满意的效果。找出变压器油中局部放电特征量与油中溶解气体浓度的对应关系 ,通过油中气体浓度的分析 ,来定性反映变压器内部是否存在局部放电 ,再通过诊断系统来确证局部放电的程度 ,并从模拟实验着手 ,探索了变压器油中局部放电特征量与油中溶解气体浓度的对应关系 。

Long time partial discharge is bad for transfomers inside insulation and now partial discharge monitoring is not satisfactory because of electromagnetic interference and noise interference .This is a new way via dissolved gases concentration analysis to find partial discharge and acconding to diagnosis system to confirm partial discharge level. A basic research has been carried out to discover the correspondence relationship between partial discharge level and dissolved gases concentration,some valuable laws are gained for the first time.