Thermo-electric Coupling Simulation for AC XLPE Cable in Two DC Operation Modes

HU Liexiang; XU Feng; QIU Peng; YU Jingzhe; QIU Haifeng; HE Chuan

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Thermo-electric Coupling Simulation for AC XLPE Cable in Two DC Operation Modes

更新时间：2025-12-08

- Thermo-electric Coupling Simulation for AC XLPE Cable in Two DC Operation Modes
- Vol. 45, Issue 7, Pages: 2307-2313(2019)
- 作者机构：
  
  1. 国网浙江省电力公司
  2. 国网浙江省电力公司电力科学研究院
  3. 浙江大学电气工程学院
  4. 国网浙江杭州市萧山区供电公司
  5. 国网安徽省电力公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 July 2019，
  
  Published：2019
- 稿件说明：
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HU Liexiang, XU Feng, QIU Peng, et al. Thermo-electric Coupling Simulation for AC XLPE Cable in Two DC Operation Modes[J]. 2019, 45(7): 2307-2313.
DOI：

HU Liexiang, XU Feng, QIU Peng, et al. Thermo-electric Coupling Simulation for AC XLPE Cable in Two DC Operation Modes[J]. 2019, 45(7): 2307-2313. DOI：

摘要

对交流电缆线路进行直流改造时

研究电缆在不同直流拓扑结构下的运行参数对于有效利用原有线路的供电能力具有重要意义。以35 kV和66 kV电压等级交流交联聚乙烯（XLPE）电缆为例

通过所建立的有限元仿真模型对在双极式直流和三线双极式直流两种拓扑结构下运行的电缆进行了热电耦合仿真分析。对于所选35 kV和66kV电缆

为避免空间电荷效应

将其改为两种直流运行方式后

其运行电压取值范围分别为±25～±40kV和±40～±65 kV。同时

随着交流电压等级的升高

交流电缆改为直流运行后的最大输送功率提升倍数逐渐降低。所得结论可为相关工程提供一定参考。

Abstract

When alternating current（AC） cable distribution lines are transformed into direct current（DC） lines

studying the operating parameters of cables under different DC topological structures is of great importance for the effective utilization of the power supply capacity of the existing lines. By using the finite element analysis software ANSYS for the typical XLPE cable widely used in 35 kV and 66 kV AC grid

we developed a simulation model for temperature and the electric field coupling. The temperature field and the electric field were simulated for the cables in different DC operation modes.To avoid the effect of the space charge

the DC voltage ranges of the selected 35 kV and 66 kV cables are ±25～±40 kV and ±40～±65 kV in the two DC operation modes

respectively. For the AC cables in DC operation

as the AC voltage level increases

the ratio of maximum transmission power after and before reconstruction gradually decreases. The conclusions in this paper can provide some references for the related engineering.

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