多回路高压电缆群稳态温度场建模与分析
付明星,王善红,王雁冰,潘恒
(国网江苏省电力有限公司盐城供电分公司,江苏 盐城 224002)
摘 要:为解决多回路电缆群温度场计算问题,以220 kV高压电缆为研究对象,采用有限元法建立多回路电缆群稳态温度场的磁热耦合计算模型,计算得到多回路电缆群的电磁损耗和温度场分布结果,经与IEC 60287标准计算结果对比,验证了模型有效性,并结合仿真模型,探讨了空气温度、土壤热阻系数等各种因素对多回路电缆群温度场分布的影响,为电缆群运行维护提供了参考。
关键词:高压电缆;多回路;有限元法;稳态温度场;磁热耦合
中图分类号:TM726.4 文献标识码:A 文章编号:1007-3175(2020)06-0019-05
Modeling and Analysis of Steady Temperature Field of Multi-Circuit High-Voltage Cables in Group
FU Ming-xing, WANG Shan-hong, WANG Yan-bing, PAN Heng
(Yancheng Power Supply Company of State Grid Jiangsu Electric Power Company, Yancheng 224002, China)
Abstract: In order to solve the calculation of the temperature field of the multi-loop cable group, 220 kV high-voltage cable is taken as the research object, and a finite element method is used to establish a magnetic-thermal coupling calculation model of the multi-loop cable group. The electromagnetic loss and temperature distribution of the multi-loop cable group are calculated. Compared with the calculation results of the IEC 60287 standard, the validity of the model is verified. Combined with the simulation model, the effects of various factors such as air temperature and soil thermal resistance coefficient on the temperature field distribution of the multi-loop cable group are discussed, which provides a reference for the operation and maintenance of the cable group.
Key words: high-voltage cables; multi-circuit; finite element method; steady temperature field; magnetic-thermal coupling
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