Research On Transformer Operation Condition Assessment Method Based On Cloud Model

In recent years, along with the extension of the power grid scale, the structure of power grid is also gradually complicated. As one of the most important equipment, transformers undertake the mission of change the electricity in the power grid. It circulates safe stability that the dependable sexual behavior arrives the whole electric power system. For a long time, the electric power system all adopts the way that periodical check to fix the transformer. However, when the transformer is placed in the healthy appearance, this kind of way will result in the excessiveness fix. Therefore, put forward carrying on check’s fix to the movement appearance of the transformer in time in recent years, this will beg the accurate transformer appearance valuation.Firstly, the impact on the terms of the state of the electrical parameters of the transformer, transformer oil gas, insulation and operating environment and other research and analysis to obtain the main evaluation factors to assess the condition of transformers.Then, according to the combination weights of cooperative game and the concept of cloud model, a new method for transformer condition assessment is proposed. Firstly, the transformer condition evaluation index system is established, the cooperative game method is applied to obtain the index weight, and the fixed weight is modified by variable weighted formula. Then, the cloud model is applied to get the membership grade of the quantitative index to the transformer condition.Lastly, the evaluation result is obtained by hierarchical evaluation method. The results show that the method has a real benefit to evaluate the operation state of transformer.