Application Of Online Monitoring Technology Of Power Transformer Oil Chromatography

Chromatography based on dissolved gas in oil analysis is an important method for internal fault monitoring of transformer. With the rapid development of the national grid at present, this technology is also in constant improvement; on line monitoring method of chromatographic analysis is also more and more attention. Transformer on-line monitoring has been paid more and more attention to, the accuracy rate of online monitoring will gradually increase, and will completely replace the regular inspection. This not only reduces the transformer maintenance and accident repair costs in the economy, but also ensures the safe operation of the power grid reliability. The implementation of online monitoring of power transformer is the inevitable trend of the transformer test, will also further promotes the improvement of automation of substation.This thesis mainly studies the relationship between the analysis of gases dissolved in insulation oil producing mechanism, gas species and the transformer fault types, analysis the reasons of the lack of routine monitoring; analysis of on-line monitoring principle of gas chromatograph of transformer oil, the study of the feasibility and stability and accuracy; to explore a adapt to the Beijing power grid intelligent station oil chromatographic on-line monitoring system, and the actual application in substation; evaluation of application effect, and spectrum on-line monitoring device for oil immersed transformer oil to improve the function of. Transformer on-line monitoring has been more and more people pay attention to, the accuracy rate of online monitoring will gradually increase, and will completely replace the regular inspection. This can not only reduce the transformer regular maintenance and accident repair costs in the economy, but also can ensure the safe operation of the power grid reliability. The implementation of on-line monitoring of transformer is the inevitable trend of transformer detection, and will also further promote the improvement of the degree of substation automation.Combining with transformer type SFSZ control system is introduced for distributed sensor transformer oil and gas chromatography on-line monitoring design, combined with a Beijing area transformer to illustrate its performance, the effectiveness of the data shows that the proposed method.