油浸式分接开关故障的DGA判断方法浅析

Simple Eoplanation of DGA Method about Oil-immersed Tap Changer Faults

简单介绍变压器油中产生的原因及油中溶解气体分析（DGA）诊断油浸式分接开关的某些故障。阐明分接开关故障的DGA判断方法，包括特征气体法、比值法、图示法判断过热性故障、放电性故障、绝缘受潮、油室渗漏等故障的具体方法及注意事项。

Briefly introduces the reason why gases produced in transformer oil and faults diagnoses of oil-immersed tap changer using DGA （the analysis of gases dissolved in transformer oil）. It expounds the DGA judgement method of tap changer faults, including gas characteristic method, ratio method, graphic method for judging the overheating faults, discharge faults, insulation affected with damp, oil chamber leakage., etc.