The Working Principle and Operation & Maintenance of Transformer Oil Chromatography Online Monitoring Device

With the rapid development of Liaoning Province economic, the requirements for the power supply reliability of the power grid are getting more higher and more urgent. Standing on the economic point of view of power station maintenance equipment, the maintenance mode of some oil-filled device has been changed from regular maintenance mode to determine the maintenance mode according to the equipment status. On-line monitoring of transformer oil chromatography is the premise and guarantee of transformer condition maintenance. The on-line monitoring system of transformer oil can on-line monitor transformers with voltage levels of 220 kV and above. To learn the operating status of transformers, we find and confirm the internal fault in time through real-time analysis of the characteristic gas concentration in transformer oil, which makes up for the shortcomings that the lab off-line chromatography analysis method cannot monitor in time and quickly. In this paper, the author explored the working principle of the 220 kV transformer oil chromatography online monitoring device maintained in the substation maintenance area of Liaoyang Power Supply Company and some problems in the monitoring process, and hope to exchange with general colleague.