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Analysis and Calculation for Leakage Current Component of Circulating Current in High Voltage Cable Sheath
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Xiaoru CHEN1, Longyi HUANG1, Shengjie LAI2, Mingjia YANG2, Zeqing WANG2, Chengjun XIA2, 3
Electric Drive | 2024, 54(3) : 23 - 29
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Electric Drive | 2024, 54(3): 23-29
Analysis and Calculation for Leakage Current Component of Circulating Current in High Voltage Cable Sheath
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Xiaoru CHEN1, Longyi HUANG1, Shengjie LAI2, Mingjia YANG2, Zeqing WANG2, Chengjun XIA2, 3
Affiliations
  • 1 Huizhou Power Supply Bureau，Guangdong Power Grid Limited Liability Company，Huizhou 516001， Guangdong，China
  • 2 School of Electric Power，South China University of Technology， Guangzhou 510640，Guangdong，China
  • 3 Guangdong Province' New Energy Power System Intelligent Operation and Control Enterprise Key Laboratory，Guangzhou 510663，Guangdong，China
Published: 2024-03-20 doi: 10.19457/j.1001-2095.dqcd24621
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The circulating current of metal sheath in high voltage cable is the superposition of induced current component and leakage current component. At present， the calculation of induced current component is relatively mature， but the calculation of leakage current component is insufficient， which affects the final circulating current calculation result and the related fault diagnosis effect. For this reason， a calculation method for leakage current component of sheath circulating current in high voltage cable was proposed. Based on the π-type equivalent circuit of "core—sheath"， an equivalent circuit for solving leakage current component of sheath circulating current was established， which take into account the shunting effect of leakage current and circulating current generated by leakage current of cable core. The final leakage current component was obtained based on the iterative method. A cable model with a linear arrangement was built using ATP-EMTP software. The results show that the relative deviation between calculation result and simulation value of this method is within 2% under different length combinations and load currents， compared with existing method， the accuracy is greatly improved. This method can better explain the reason of excessive circulating current at light load， and has a certain reference for the generation of sample data for fault diagnosis of cross-connected systems.

high voltage cable  /  cross-bonding  /  circulating current of sheath  /  induced current component  /  leakage current component
Xiaoru CHEN, Longyi HUANG, Shengjie LAI, Mingjia YANG, Zeqing WANG, Chengjun XIA. Analysis and Calculation for Leakage Current Component of Circulating Current in High Voltage Cable Sheath[J]. Electric Drive, 2024 , 54 (3) : 23 -29 . DOI: 10.19457/j.1001-2095.dqcd24621
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Article Info
doi: 10.19457/j.1001-2095.dqcd24621
  • Receive Date：2022-09-14
  • Online Date：2025-12-12
  • Published：2024-03-20
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History
  • Received：2022-09-14
  • Revised：2022-09-28
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Affiliations
    1 Huizhou Power Supply Bureau，Guangdong Power Grid Limited Liability Company，Huizhou 516001， Guangdong，China
    2 School of Electric Power，South China University of Technology， Guangzhou 510640，Guangdong，China
    3 Guangdong Province' New Energy Power System Intelligent Operation and Control Enterprise Key Laboratory，Guangzhou 510663，Guangdong，China
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