The Application Of The Transformer Oil Chromatographic On-line Monitoring And Fault Diagnosis Technology

Along with the in-depth development of transformer condition maintenance work, more and more demand for on-line monitoring device of transformer, because the transformer is one of the most important device in the power grid, its working status affects the power grid is stable and reliable operation. Power grid construction, rise to the requirement of transformer working voltage and capacity, at the same time, to go further by calling for the transformer can be normal work time.The cause of the defects, this paper studies the transformers for each kind of defects, corresponding to the characteristics of the gas is different, in turn, can from the analysis of the characteristics of the gas, get transformer corresponding defects, as well as from the current development trend of the characteristics of the gas, to predict the state of the transformer in the future work. This paper introduces a kind of use of gas composition analysis of the technology to the flaws of the transformer, through the device work past information and the current working situation, at the same time, using a variety of judgment technology, comprehensive analysis of transformer state, makes the analysis results are accurate and correct. When the transformer appearance, therefore, choose a variety of technical test transformer, in the historical operating data on the technology of judgment results are obtained.Zaozhuang power supply company to carry on the on-line monitoring device of transformer oil chromatography and offline chromatographic analysis instrument of contrast test, through contrast test, as a whole, the on-line monitoring device for detection of low concentration and high concentration is greater than the concentration in the error. Various on-line monitoring device of monitoring repetitive mostly below 5%, satisfies the requirement of fault detection. And successfully solved through oil chromatographic technology zaozhuang station# 2 main transformer C acetylene content in the insulating oil is unusual problem, by the direct cause is the core yoke and fluctuation of iron yoke connection since is silicon steel sheet of secondary iron near the 3 iron out Angle deformation occurs, in under the action of vibration of intermittent short circuit between, sexual contact discharge breakdown and circulation of overheating fault resulted in the abnormal content of gases dissolved in transformer oil.