曾令诚,孟晨旭,罗海鑫,王伟平,侯澳港,产启中
ZENG Lingcheng,MENG Chenxu,LUO Haixin,WANG Weiping,HOU Aogang,CHAN Qizhong

• 1:广东电网有限责任公司中山供电局
• 2:武汉大学电气与自动化学院

摘要(Abstract)：

三芯电缆中间接头热点温度的实时感知对研究电缆安全运行、温升及动态载流能力评估具有重要意义。因此，以10 kV三芯电缆中间接头为研究对象，针对不同型号中间接头的结构、材料及现场工艺分散性的实际情况，构建了电缆接头温度场仿真模型，分析了中间接头的温度场分布规律。建立了基于轴向热流的导体轴向温度统一反演模型。采用单因子变化与正交组合方式，分析了材料参数分散性对接头导体轴向反演模型的拟合度及灵敏度的影响。仿真结果表明，轴向温度反演模型的灵敏度系数和拟合优度变化均较小，对于不同结构、材料及现场工艺分散性具有较好的鲁棒性。
Real-time sensing of hot spot temperature in three-core cable joints is of significant importance for studying operation safety of cables, temperature rise, and dynamic load carrying capacity assessment. Therefore, focusing on 10 kV three-core cable joints and considering the variations in structures, materials, and on-site process for different types of joints, the paper constructs a simulation model for cable joint temperature fields and analyzes the temperature field distribution rules of the joints. Moreover, the paper establishes a unified inverse model for axial temperature of conductor based on axial heat flow. By employing single factor variation and orthogonal combination methods, the paper analyzes the impact of material parameter variations on the fitting degree and sensitivity of the axial inverse model for joint conductors. Simulation results demonstrate that the sensitivity coefficient and fitting goodness of the inverse model for axial temperature vary slightly, indicating good robustness for different structural, material, and on-site process variations.

关键词(KeyWords)： 三芯电缆;温度场;轴向温度反演模型;敏感性分析
three-core cable;temperature field;inverse model for axial temperature;sensitivity analysis

Abstract:

Keywords:

基金项目(Foundation): 智能电网联合基金资助项目（U2066217）;; 南方电网公司科技项目（GDKJXM20220135）

作者(Author): 曾令诚,孟晨旭,罗海鑫,王伟平,侯澳港,产启中
ZENG Lingcheng,MENG Chenxu,LUO Haixin,WANG Weiping,HOU Aogang,CHAN Qizhong

DOI: 10.19585/j.zjdl.202408011

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