华电技术 ›› 2018, Vol. 40 ›› Issue (12): 36-38.

• 技术交流 • 上一篇    下一篇

基于有限元法的电缆温度场与载流量分析

  

  1. 国网河南省电力公司客户服务中心,郑州〓450000
  • 出版日期:2018-12-25 发布日期:2019-01-28

Analysis of cable temperature field and current carrying capacity based on finite element method

  1. Customer Service Center, State Grid Henan Electric Power Company, Zhengzhou 450000, China
  • Online:2018-12-25 Published:2019-01-28

摘要:

作为对于输电及配电系统都极其重要的设备之一,电力电缆具有不影响城市市容和传输可靠性高的特点。大量复杂的参数决定电缆的载流量,仅按照IEC 60287-2-1—2015《电力电缆的额定电流计算》标准确定电缆载流量往往有较大的误差,无法满足实际需要。通过有限元法利用电缆温度分布来得到电力电缆的载流量,并通过COMSOL软件试验和仿真验证了此方法的正确性和有效性,给出了对电缆敷设有益及提高电缆载流量的建议。同时,证明此方法对电力电缆的安全、经济运行具有实际意义。

关键词:

Abstract:

As an important equipment for power transmission and distribution systems,  cables have on affection on electric capacity and transmission reliability of cities. A large number of complicated parameters determine the current carrying capacity of the cable. There will be large error in determining the current carrying capacity of cable solely according to the IEC 60287-2-1—2015 Electric CablesCalculation of  the Currrent Rating standard, which cannot meet the actual needs. Finite element method is used to obtain the current carrying capacity of the cable. The correctness and effectiveness of the method are verified by COMSOL software and simulation tests. Suggestions that benefit for the cable laying and cable current carrying capacity improvement are given.Meanwhile, it is proved that this method has practical significance for the safe and economic operation of power cables.

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