Research on Gas Diffusion Characteristics in Oil of Large Trans-formers High Voltage Indirect Output Areas
As the key channel of winding,the large transformer indirect riser or outlet box has the characteristics of large lead current,high electric field strength and insulation structural complicated.At the same time,the large oil gap,poor oil circulation,and the difficulty or hysteresis of the fault characteristic gas diffusion will make the fault difficult to be timely detected by the on-line or off-line dissolved gas diagnosis technology.In this paper,the migration and diffusion law of fault characteristic gas in the indirect riser or outlet box or poor oil flow such as tanks of large transformers is obtained by means of experiments,and the transport process of characteristic gas in the dead oil area is understood,which provides references for the optimization of oil circulation structure and online fault monitoring,and is of great significance for ensuring the safe operation of transformers.
Large transformerIndirect output areaGas diffusion test
万方数据
维普
