The On-line Monitoring And Fault Diagnosis About Transformer Based On Oil Dissolved Gas

The reliability of transformer operation, which is the main power supply equipment of the power system, is directly related to the safe operation of the power system grid.Transformer oil dissolved gas line monitoring can overcome the lack of chromatographic analysis of conventional oil, oil chromatography directly at the transformer site online intelligent monitoring and fault diagnosis. This is not only real-time operation of transformers, discover and track the presence of latent failure, timely use of online monitoring system automatic fault diagnosis, conventional oil chromatography can also reduce errors, improve the reliability of fault diagnosis, and chromatographic Analysis of Oil in the main control room of the main transformer substation each tour online monitoring, online intelligent monitoring and diagnosis of the operating condition of the entire transformer.This article discusses the significance of the transformer on-line monitoring and fault diagnosis and domestic and foreign research status and development trend analysis of the principle of transformer oil dissolved gas generation, the generation process and dissolution mechanism, a comprehensive analysis of the transformer internal fault with the oil dissolved gasrelations and discrimination method, discusses the DGA technology based on the principles of transformer fault diagnosis and fault diagnosis commonly used method to determine the improved three-ratio method for power transformer fault diagnosis analysis. Subsequent analysis of the transformer oil in Jincheng power spectrum overall application of on-line monitoring device, corresponding improvement measures to the existing problems is put forward. Combining with the research, in the Jincheng North Yicheng substation installed successfully implemented on-line monitoring system for dissolved gas in transformer oil Zhongfen3000, realized the on-line monitoring and fault diagnosis of transformer oil CH4, C2H2, C2H4, C2H6, H2, CO, CO2seven kinds of gas and total hydrocarbon, Through the proof analysis of large amount of operation data,Zhongfen3000transformer oil chromatographic on-line monitoring system installation is convenient, accurate monitoring data, high reliability, can satisfy the real-time running status transformer on-line monitoring requirements, to provide real-time, reliable data for on-line monitoring of transformer operation status of Shanxi power supply company of Jincheng, improving the technical level of transformer management. The final analysis of the on-line monitoring system application prospect.