基于低压侧多级调压的融冰变压器磁-热耦合计算分析OA

Icing on distribution lines can easily lead to conductor breakage,equipment burnout,or even tower collapses,posing a serious threat to power supply reliability.To ensure continuity of power supply and enhance de-icing efficiency,a de-icing transformer based on multi-stage voltage regulation on the low-voltage side is proposed,and its multiphysics behavior is analyzed.First,the operating principle and key design parameters of the de-icing transformer are elaborated.Second,a three-dimensional transient electromagnetic field model and a three-dimensional fluid-solid coupled model are constructed.Subsequently,the magnetic field distribution characteristics and loss variation patterns inside the transformer are analyzed,and the temperature rise distribution patterns under conventional power supply mode and parallel power supply-de-icing mode are compared.Finally,transformer temperature rise tests are conducted for validation.The results show that the calculated values agree well with the experimental results,effectively verifying the reliability of the proposed computational methodology and providing new insights and technical support for the innovative optimization of distribution line de-icing technologies.