Numerical Method to Calculate the Transient Temperature Field and Short-Term Ampacity of Underground Cable System
Liang Yongchun1, 2, Li Yanming1, Li Yanmu1, Wang Zhenggang3, Li Zhongkui3
1. Xi'an Jiaotong University Xi'an 710049 China 2. Hebei University of Science and Technology Shijiazhuang 050054 China 3. Zhengzhou Electric Power Company Zhengzhou 450006 China
Abstract：Finite difference method (FDM) is used to divide the transient temperature calculation process of underground cable systems into discrete groups of transient time step, and finite element method (FEM) is used to calculate each time step-temperature distribution of underground cable systems, and the transient temperature distribution of underground cable systems is calculated. Based on the calculation of the transient temperature distribution, short-term ampacity of underground cable systems is calculated by Newton iteration method. The result of test and calculation show that the method with FEM and FDM is an effective method to calculate the transient temperature field and short-term ampacity of underground cables in engineering.
梁永春, 李彦明, 李延沐, 王正刚, 李忠魁. 地下电缆群暂态温度场和短时载流量数值计算方法[J]. 电工技术学报, 2009, 24(8): 34-38.
Liang Yongchun, Li Yanming, Li Yanmu, Wang Zhenggang, Li Zhongkui. Numerical Method to Calculate the Transient Temperature Field and Short-Term Ampacity of Underground Cable System. Transactions of China Electrotechnical Society, 2009, 24(8): 34-38.
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2009, Vol. 24 
