基于电热液压合模拟的XLPE海底电缆的热性能和经济效率分析
Minquan Ye1, Yue Zhang2, Huiying Wu2
1State Grid Fujian Economic Research Institute, Fuzhou, 350013, China. hdymq2014@163.com.
Scientific reports
|February 17, 2026
概括
地面条件显著影响海底电缆的性能. 优化土壤热导率和铺设深度可以改善220kV XLPE电缆的热管理和经济效率.
科学领域:
- 电气工程 电气工程
- 地质技术工程 地质技术工程
- 热力工程是热力工程中的一个.
背景情况:
- 如果操作温度超过极限,海底电缆绝缘会恶化.
- 地面条件极大地影响热传输,影响电缆温度和经济可行性.
研究的目的:
- 研究地面条件对220kV交流XLPE海底电缆的热性能和经济效率的影响.
- 分析铺设深度,初始温度,土壤导热率和透性的影响.
主要方法:
- 开发了一种结合的有限元模型,集成了电磁,热和孔水流场.
- 进行了参数研究,以评估各种地面参数的影响.
主要成果:
- 导体温度随着铺设深度,初始温度的增加而上升,随着土壤导热率的下降而下降.
- 较高的土壤透性 (> 10^-11 m^2) 会降低导体温度.
- 增加的铺设深度加剧了温度的上升.
结论:
- 提高经济效率需要使用具有高导热性的土壤或减少铺设深度.
- 通过提高土壤透性来提高成本效益,只有在10^-11 m^2.2.以上才有利.
- 热性能与地面特征直接相关.
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