723 / 2022-03-31 18:40:53

Simulation study on transformer winding deformation based on finite element method

finite element model,Winding deformation,power transformer

IEEE ICHVE 2022 / 1-PAGE ABSTRACT

Simulation study on transformer winding deformation based on finite element method

Shan Wang¹,Yifeng Shi²,Dexu Zou¹,Qingjun Peng¹,Yong Shi¹,Weiju Dai¹

1 Electric Power Research Institute of Yunnan Power Grid Corporation

2 Chongqing University

798482608@qq.com



Purpose/Aim

Winding deformation is very common in transformer faults and has accumulation effect. With the aggravation of deformation, once a short circuit occurs, the transformer has the possibility to be destroyed.

Experimental/Modeling methods

In this paper, models with different severity of radial displacement fault, which is one of the most typical winding deformations, are set up by finite element method. For different parts of the winding, several meshing methods are adopted to ensure the accuracy of simulation.

Results/discussion

The electrical quantities at the fault status and those at normal status are calculated based on finite element method. Via comparing the electrical quantities under different status ,we can get the law of electrical quantities affected by winding deformation, which is in-line with already existing results.

Conclusions

The law of electrical quantities affected by winding deformation can help divide the level of winding deformation. The data from this simulation can help build database of winding deformation, which makes contribution to online monitoring on power transformer.