General Analysis of Vacuum Circuit Breaker Switching Overvoltages in Offshore Wind Farms

S. M. Ghafourian, I. Arana, Joachim Holbøll, T. Sørensen, M. Popov, V. Terzija

Research output: Contribution to journalJournal articleResearchpeer-review


Understanding mechanisms of switching transient overvoltages in modern electrical power systems is a necessity to ensure a proper design of power plants and switchgear and the required level of reliable and secure system operation. High fidelity plant modelling and accurate transient analysis is a prerequisite for understanding the mechanisms of how overvoltages are created and whether or not the voltage withstand capabilities of system components will be exceeded. This research is focused on switching overvoltages typical for an offshore wind farm power collection grid configuration that comprises vacuum circuit breakers (VCBs), cables and transformers. An in-depth understanding of the prestrike effects in VCBs is a prerequisite for studying switching transient overvoltages. In this paper, the impact of VCB parameters (e.g., stray capacitance and withstand voltage ability) and cable length on the transformer terminal voltage during closing operation was studied. A wind farm power collection system was modelled in ATP-EMTP environment. To validate the results obtained through computer simulation, field measurements from an actual system were used.
Original languageEnglish
JournalIEEE Transactions on Power Delivery
Issue number5
Pages (from-to)2351-2359
Number of pages9
Publication statusPublished - 2016


  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Offshore wind farms
  • overvoltages
  • submarine cable
  • switching transients
  • time-domain modelling
  • vacuum circuit breaker (VCB)
  • validation
  • Cables
  • Capacitance
  • Electric charge
  • Electric circuit breakers
  • Electric power system interconnection
  • Electric power systems
  • Electric surges
  • Electric utilities
  • Plant shutdowns
  • Power quality
  • Reconfigurable hardware
  • Submarine cables
  • Switching
  • Time domain analysis
  • Transient analysis
  • Transients
  • Wind power
  • Over-voltages
  • Switching transient
  • Time domain
  • Vacuum circuit breaker
  • wind power plants
  • offshore installations
  • overvoltage
  • power system security
  • vacuum circuit breakers
  • ATP-EMTP environment
  • offshore wind farms
  • vacuum circuit breaker switching overvoltages
  • switchgear
  • switching transient overvoltages
  • transformer terminal voltage
  • wind farm power collection system
  • Voltage measurement
  • Current measurement
  • Wind farms
  • Surges
  • Switches
  • Underwater cables
  • Wind power plants
  • Switchgear
  • Power system protection


Dive into the research topics of 'General Analysis of Vacuum Circuit Breaker Switching Overvoltages in Offshore Wind Farms'. Together they form a unique fingerprint.

Cite this