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254 / 2024-07-10 18:09:19
Investigation on Switching Overvoltage of ±550kV DC GIS in Offshore Wind Farm
Offshore Wind Farm; ±550kV DC GIS; Switching Overvoltage
3)Fault current limiting technology
Draft Accepted
Liudan Wang / Xi’an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment
Siyuan Liu / Xi'an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment
Yifan Chen / Xi’an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment
Ziao Yuan / Xi’an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment
Zhiyuan Liu / Xi’an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment
Yingsan Geng / State Key Laboratory of Electrical Insulation and Power Equipment； Xi’an Jiaotong University
DC gas-insulated switchgear (DC GIS) in offshore wind farms significantly reduces the occupied space compared to air-insulated switchgear, lowering the cost of offshore platforms. In offshore HVDC systems, the DC GIS withstands considerable overvoltage during faults. Research of overvoltage stress in DC GIS is vital to the system. The study addresses the critical aspect of the arrester configuration scheme and overvoltage stress of ±550kV DC GIS. Offshore wind farm flexible DC grid connection with ±550kV symmetric bipolar system topology is established in the PSCAD/EMTDC platform. Then, the paper investigates the overvoltage withstood by the DC GIS surge arrester under different fault conditions and locations. The voltage stress level of ±550kV DC GIS is calculated and analyzed. The results show that ±550kV DC GIS switching impulse withstand voltage is over 1068 kV in offshore wind farms.

 
Important Date

  • Conference Date

    Nov 10

    2024

    to

    Nov 13

    2024

  • Nov 11 2024

    Draft paper submission deadline

  • Nov 19 2024

    Registration deadline

Sponsored By
Xi’an Jiaotong Universit
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