Simulation Analysis and Experimental Verification of the Three-phase Unbalance of the Grounding Current of the Submarine and Land Cable Transition Joint

CONG Yun; CAI Yong; SUN Lu; LE Yanjie; GAO Zhen; LIU Zongxi; SHEN Qi

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Simulation Analysis and Experimental Verification of the Three-phase Unbalance of the Grounding Current of the Submarine and Land Cable Transition Joint

更新时间：2025-06-18

- Simulation Analysis and Experimental Verification of the Three-phase Unbalance of the Grounding Current of the Submarine and Land Cable Transition Joint
- High Voltage Apparatus Pages: 1-9(2025)
- 作者机构：
  
  1.国网浙江省电力有限公司舟山供电公司，浙江　舟山　 316021
  2.国网浙江省电力有限公司，杭州　 310000
  3.浙江舟山海洋输电研究院有限公司，浙江　舟山　 316021
  4.中国电力科学研究院有限公司，武汉　 430072
- 作者简介：
- 基金信息：
  
  State Grid Science and Technology Project(5500-202155374A-0-0-00)
- DOI：
  CLC：
- Published：
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CONG Yun, CAI Yong, SUN Lu, et al. Simulation Analysis and Experimental Verification of the Three-phase Unbalance of the Grounding Current of the Submarine and Land Cable Transition Joint[J/OL]. High voltage apparatus, 2025, 1-9.
DOI：

CONG Yun, CAI Yong, SUN Lu, et al. Simulation Analysis and Experimental Verification of the Three-phase Unbalance of the Grounding Current of the Submarine and Land Cable Transition Joint[J/OL]. High voltage apparatus, 2025, 1-9. DOI：

摘要

针对海陆缆过渡接头处护套接地电流存在三相不平衡的问题，以某220 kV海陆缆混合线路为例，研究过渡接头处护套接地电流三相不平衡的原因。通过理论分析、仿真计算和试验验证发现回流缆的布置及接地方式是导致护套接地电流三相不平衡的主要原因。根据研究结果，提出回流缆布置及接地方式的改造方案，有效解决过渡接头处护套接地电流三相不平衡的问题，保障海陆缆安全稳定运行。

Abstract

In allusion to the problem of the three-phase unbalance of the grounding current in sheath of the submarine and land cable transition joint

this paper takes a 220 kV line mixed with submarine and land cables as an example and studies the main cause of the three-phase unbalance of ground current. Through theoretical analysis

simulation calculation and experimental verification

it is found that the arrangement and grounding mode of return cable are the main reasons for the three-phase unbalance of grounding current. According to the research results

the return cable arrangement and grounding mode modification scheme is put forward to effectively solve the three-phase unbalance of grounding current in sheath of the transition joint and ensure the safe and stable operation of the submarine and land cables.

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references

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