In order to detect faults timely, decrease the testing period and reach the status maintenance, on-line monitoring of transformer oil chromatogram has been developed and spread gradually.
为更及时准确地发现变压器故障，缩短检测周期，逐步实现变压器的状态检修，变压器油色谱的在线监测应用而生，并逐步得到推广应用。
The traditional gas chromatography for testing dissolved gas in transformer oil has the disadvantage of multiple analytic links, frequent operation, long testing cycle and large errors.
传统气相色谱法检测油中溶解气体存在分析环节多、操作频繁、试验周期长、误差大等弊病。
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