CAJ | 학술논문

为便于诊断干式变压器的故障，对干式变压器进行热点分析。根据干式变压器实际结构建立了三维对称热传导模型，并基于多物理场有限元软件平台Comsol Multiphysics对干式变压器开展温度场仿真计算，计算得出温度场分布云图以及铁芯、绕组温升曲线。通过比对实际数据和仿真分析结果，从而确定温度分布及最热点温度位置在低压绕组距底部2/3处，可为该类干式变压器的在线诊断及结构优化设计提供理论依据。
위편우진단간식변압기적고장，대간식변압기진행열점분석。근거간식변압기실제결구건립료삼유대칭열전도모형，병기우다물리장유한원연건평태Comsol Multiphysics대간식변압기개전온도장방진계산，계산득출온도장분포운도이급철심、요조온승곡선。통과비대실제수거화방진분석결과，종이학정온도분포급최열점온도위치재저압요조거저부2/3처，가위해류간식변압기적재선진단급결구우화설계제공이론의거。
To conveniently diagnose the faults of dry-type transformer mostly due to abnormal temperature rise directly or indirectly, and the simulation of the hot-spot temperature has important theoretical and engineering application value. According to the actual structure of dry-type transformer, a three-dimensional axisymmetric heat conduction model is established, and the simulation of temperature field calculation of dry-type transformer is carried out based on Comsol Multiphysics to calculate the temperature field distribution and iron core, windings temperature rise curve. Through the comparison between the actual data and the results of the simulation analysis, the temperature distribution and the hottest spot temperature at position 2/3 from the bottom in the low voltage winding is determined. It provides a theoretical reference for dry-type transformer diagnosis and structural optimization of online design.