Key Problems of Design for AC 500 kV Cross-linked Polyethylene Insulation Submarine Cable

WANG Shaohua; YAN Libing; LI Te; REN Guangzhen; ZHOU Xiangxian; JIANG Zhenxing; JIANG Hang

doi:10.13296/j.1001-1609.hva.2018.08.035

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Key Problems of Design for AC 500 kV Cross-linked Polyethylene Insulation Submarine Cable

更新时间：2025-04-26

- Key Problems of Design for AC 500 kV Cross-linked Polyethylene Insulation Submarine Cable
- High VoltageApparatus Vol. 54, Issue 8, Pages: 225-230+236(2018)
- 作者机构：
  
  1. 国网浙江省电力有限公司电力科学研究院
  2. 南京师范大学南瑞电气与自动化学院
  3. 国网浙江省电力有限公司
  4. 南京南瑞集团公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.08.035
  CLC： P756.1
- Published：2018
- 稿件说明：
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[1]王少华,阎黎冰,李特,任广振,周象贤,江贞星,江航.交流500 kV交联聚乙烯绝缘海缆设计关键问题[J].高压电器,2018,54(08):225-230+236.

WANG Shaohua, YAN Libing, LI Te, et al. Key Problems of Design for AC 500 kV Cross-linked Polyethylene Insulation Submarine Cable[J]. High voltageapparatus, 2018, 54(8): 225-230+236.
[1]王少华,阎黎冰,李特,任广振,周象贤,江贞星,江航.交流500 kV交联聚乙烯绝缘海缆设计关键问题[J].高压电器,2018,54(08):225-230+236. DOI： 10.13296/j.1001-1609.hva.2018.08.035.

WANG Shaohua, YAN Libing, LI Te, et al. Key Problems of Design for AC 500 kV Cross-linked Polyethylene Insulation Submarine Cable[J]. High voltageapparatus, 2018, 54(8): 225-230+236. DOI： 10.13296/j.1001-1609.hva.2018.08.035.

摘要

为实现世界首条500 kV交联聚乙烯海缆的研制

对海缆交流电阻设计、绝缘缓冲层的选择、软接头电场设计等关键问题进行了分析

分析结果表明:海缆敷设后各相距离较远

临近效应对海缆交流电阻的影响可以忽略;通过绝缘线芯的热膨胀试验可以确定绝缘缓冲层的厚度;控制软接头恢复绝缘与本体绝缘之间交界面电场是对海缆软接头进行电场设计的关键;基于海缆金属护套、铠装层上的感应电压计算是进行确定中间接地位置的重要基础。

Abstract

In order to develop world’s first 500 kV cross-linked polyethylene insulation submarine cable

the critical technology during design are summarized such as the design of the AC resistance

the selection of insulation buffer layer and the electric field design of flexible joint. Owning to the distance among the different phases submarine cable conductors

the neighbor effect on the AC resistance could be neglected. The buffer layer could be selected by thermal expansion test of insulated cable conductor. The control of the electric field at the interface between the flexible joint and the cable is the key to design the electric field inner submarine cable flexible joint. Calculation of induced voltage on the cable metal sheath and armor layer is the important basis to confirm the position of the middle ground.

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