The Research Of Oil Chromatogram On-line Monitoring System For Power Transformer Based On CAN Bus

Power transformer is an important power system equipment,whose safe operation affects the overall security and stability of power system operation. The establishment of transformer oil chromatogram on-line monitoring system and controlling transformer's operating conditions to improve power system stability has very important significance. In this paper, fault gases in transformer oil producing mechanism, commonly used means of gas separation, gas chromatography analysis and means to determine fault according to fault gases has been studied. Designed based on the CAN bus line monitoring of transformer oil chromatogram on-line monitoring system structure under the premise of analysis of the CAN bus in principle, structure, communication protocols. The on-line monitoring data and off-line laboratory data were compared off-line,whose results show that the on-line monitoring data data and off-line laboratory data has the consistent trend. Monitoring data online has important practical value.