Finite Element Analysis of the Effect of Cable Grounding Shield Structure on Transmission Line Parameters

LI Yan; LIU Yunpeng

doi:10.13296/j.1001-1609.hva.2020.11.030

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Finite Element Analysis of the Effect of Cable Grounding Shield Structure on Transmission Line Parameters

更新时间：2025-04-26

- Finite Element Analysis of the Effect of Cable Grounding Shield Structure on Transmission Line Parameters
- High VoltageApparatus Vol. 56, Issue 11, Pages: 196-202(2020)
- 作者机构：
  
  1. 华北电力大学河北省输变电设备安全防御重点实验室
  2. 华北电力大学新能源电力系统国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.11.030
  CLC： TM75
- Published：2020
- 稿件说明：
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[1]李岩,刘云鹏.电缆接地屏蔽层结构对传输线参数影响的有限元分析[J].高压电器,2020,56(11):196-202.

LI Yan, LIU Yunpeng. Finite Element Analysis of the Effect of Cable Grounding Shield Structure on Transmission Line Parameters[J]. High voltageapparatus, 2020, 56(11): 196-202.
[1]李岩,刘云鹏.电缆接地屏蔽层结构对传输线参数影响的有限元分析[J].高压电器,2020,56(11):196-202. DOI： 10.13296/j.1001-1609.hva.2020.11.030.

LI Yan, LIU Yunpeng. Finite Element Analysis of the Effect of Cable Grounding Shield Structure on Transmission Line Parameters[J]. High voltageapparatus, 2020, 56(11): 196-202. DOI： 10.13296/j.1001-1609.hva.2020.11.030.

摘要

电缆传输线模型具有广泛的应用场景

比如电磁暂态仿真、电缆局部放电诊断等。电缆的传输线参数受到电缆接地金属屏蔽层结构的影响。为了分析这种影响

研究了3种屏蔽结构:①整层接地铜屏蔽;②多股铜导线构成的接地屏蔽;③多股铜导线和铅层构成的双层接地屏蔽结构。首先构建了前两种屏蔽结构电缆的二维模型

有限元仿真获得的传输线参数和实测结果的对比验证了仿真的正确性

在此基础上对比分析了3种屏蔽结构对传输线参数的影响。为了解决二维模型无法表征多股铜导线螺旋结构的问题

针对多股铜导线屏蔽电缆构建了三维模型

进一步利用有限元法分析了铜导线数量和螺旋角度对电缆传输线参数的影响。

Abstract

The cable transmission line model has been widely applied to such scenarios as electromagnetic transient simulation and cable partial discharge diagnosis.Parameters of cable transmission line are affected by cable grounding metal shield structure.This paper analyzes three shielding structures—the whole layer-grounded copper sheath

the shield of multiple strands of copper wire

and the two-layer shield composed of multiple strands of copper wire and lead layer.Firstly

two two-dimensional cable models with the first two shielding structures mentioned above are constructed and simulated.The simulation results of the transmission line parameters obtained by finite element method are compared with the measured data

and the result verifies the correctness of the simulation.Then

the effects of the three shielding structures on the parameters of transmission line are analyzed comparatively.In order to solve the problem that the two-dimensional models cannot characterize the spiral structure of multiple strands of copper wire

a three-dimensional cable model with the shield of multiple strands of copper wire is constructed

and the effects of the copper strand number and the spiral angle on the parameters of cable transmission line are further analyzed with the finite element method.

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