Oil-immersed transformers play a key role in the conversion of different voltage levels.When the three-phase power system operates unbalanced,the transformer will generate additional losses,which affects its performance and life.The three-phase unbalance will cause the temperature to rise in some areas of the transformer,accelerating the aging of the winding insulation,and shortening its service life.A digital twin framework and corresponding model are built to simulate and monitor the operation state of transformer.And then,based on the established model,the temperature field distribution of transformer under three-phase unbalance is calculated,and the influence of unbalance degree on the temperature field distribution of transformer components is also analyzed.The research results provide important support for field maintenance and troubleshooting,and have key significance for effective analysis and evaluation of transformer internal state.
关键词
油浸式电力变压器/数字孪生框架/三相不平衡/温度场分布/状态分析
Key words
oil-immersed power transformer/digital twin framework/three-phase unbalance/temperature distribution/status analysis
维普
万方数据