气体绝缘金属封闭开关设备的母线温升直接影响设备的可靠性,其热点温度的推演对设备安全稳定运行具有重要意义。文中基于真型三相共筒GIS构建电磁场—流场—温度场的多物理场耦合仿真模型,搭建GIS母线温升试验平台以验证仿真模型的准确性。在此基础上,利用机器学习算法对仿真数据进行训练并反演GIS母线内部热点温度。将温升试验中的外壳温度数据作为反演网络的输入,通过对比输出的母线反演温度值与实测值来验证反演的有效性与准确性,为基于仿真的GIS内部热故障诊断及预测提供可能。此外,还对比分析了不同外壳测温点组合的反演结果,
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