| 地下电缆温度场的场路结合算法 |
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| 引用本文： | 孟庆民. 地下电缆温度场的场路结合算法[J]. 电网技术, 2009, 0(20) |
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| 作者姓名： | 孟庆民 |
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| 作者单位： | 临沂师范学院信息学院; |
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| 摘 要： | 精确模拟地下电缆的散热特性,对电缆的安全、稳定运行具有重要意义。文章基于有限容积法和等值热路法,提出了场路结合的地下电缆温度场计算方法和计算模型。该算法仅对土壤区域进行数值计算,将电缆等效为点热源,电缆各层的温度由热路法求得,包围电缆的土壤层的温度由数值计算后经插值求得,有效解决了土壤区域与电缆区域边界不一致给计算带来的困难,且减少了计算工作量、提高了计算速度。通过试验验证了该算法的正确性。
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| 关 键 词： | 地下电缆 温度场 载流量 等值热路法 |
A Temperature Field and Heat Circuit Integrated Numerical Calculation Method for Underground Cable Temperature Field |
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| MENG Qing-min. A Temperature Field and Heat Circuit Integrated Numerical Calculation Method for Underground Cable Temperature Field[J]. Power System Technology, 2009, 0(20) |
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| Authors: | MENG Qing-min |
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| Affiliation: | MENG Qing-min(College of Information,Linyi Normal University,Linyi 276000,Shandong Province,China) |
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| Abstract: | It is significant for secure and stable operation of underground cable to accurately simulate its heat dissipation characteristic.Based on finite volume method and equivalent heat circuit method,a temerature field and heat circuit integrated numerical calculation method for temerature field of underground cable and corresponding calculation model are proposed.The proposed algorithm is only suitable to numerical calcultion for soil range where the underground cable is buried,and the underground cable is equi... |
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| Keywords: | underground cable temperature field ampacity equivalent heat circuit |
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