Research On Detection Technology Of Insulating Oil Volatilization Gas Within The Substation Equipment

Large power transformer is one of the most important and expensive equipments in power industry. Its operation reliability has impact on the security of the power grid. So carrying out detect of transformer insulation oil and Fault diagnosis technology research,Early detect the early latent fault of insulation transformer, has important significance to ensure the safety of power grid. At present, Dissolved gas analysis(DGA) in oil is the primary means of lifetime prediction and transformer fault diagnosis, But the DGA detects such as monitoring and fault diagnosis delay composition single technical limitations.This article will apply photo acoustic spectroscopy technology to analyze dissolved in transformer insulating oil gas. At the beginning of the paper, it makes the basic theory of the photo acoustic spectroscopy technology, expounds the mechanism of the photo acoustic signals which include a light-to-heat conversion process and heat-to-sound conversion process, deduces the formula of the photo acoustic signals in the resonant mode. Secondly,transformer oil is simulated discharge effect. We use photo acoustic spectroscopy technology to achieve the sample oil measuring, analysis the C2H2(acetylene), CH4(methane), C2H6(ethane), C2H4(vinyl), CO(carbon monoxide), CO2(carbon dioxide). The transformer fault type of high temperature oil and arc discharge can be found.The theory and experiment show that the use of the photo acoustic spectroscopy technology in the design of transformer oil gas detection is feasible. photo acoustic spectroscopy technology can be very effective in transformer oil of dissolved gas analysis,which can quickly detect equipment interior possible problems.