Research Of Transformer On-line Monitoring Technology

The transformer is one of the most important equipment of electrical power system, its operation stability, reliability directly affects the safety of the electrical power system. In order to ensure the safety and stability of power grid, it is necessary to monitor,analysis and diagnosis the insulation of the transformer. The content and composition of gas qualitative change in oil can effectively reflect the fault of internal power transformer. In this paper, the Jinzhong power supply company,takes its baijiazhuang 220kv substation as on-line monitoring test. Through the main transformer oil gas on-line monitoring of Bajiazhuang substation, System timely detection data, these data can be used to judge the insulation condition of transformer, Baijiazhuang station transformer work data analysis and fault the judgment, the on-line monitoring of dissolved gas in transformer oil pilot substation device (MGA2000 system) by operating data available and the commonly used method for the detection of data were compared and analyzed, the results show that the measurement data of MGA2000, the system is stable, reliable operation and operation conditions, this system can accurately reflect the main transformer insulation and. In addition to establish production technology supervision system (MIS system), to realize the spectral data processing import, chromatographic analysis and test report form a comprehensive system of on-line monitoring of transformer oil, in order to achieve the power transformer fault diagnosis and condition based maintenance, MGA2000 system has reached advanced level in the field of domestic online monitoring. The use of the process, we also found some problems, and put forward the further improvement and perfection of the place.Transformer on-line monitoring technology after decades of research and practice, found a lot of defects, has played a positive role for the safe operation of equipment. Although the application needs further experience, but the mature development of monitoring technology will become a safe and stable operation of the power transformer of a strong and reliable control of defense.