Journal article
General Analysis of Vacuum Circuit Breaker Switching Overvoltages in Offshore Wind Farms
University of Manchester1
Ørsted A/S2
Department of Electrical Engineering, Technical University of Denmark3
Center for Electric Power and Energy, Centers, Technical University of Denmark4
Smart Electric Components, Center for Electric Power and Energy, Centers, Technical University of Denmark5
Delft University of Technology6
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2016 |
| Pages: | 2351-2359 |
| ISSN: | 19374208 and 08858977 |
| Types: | Journal article |
| DOI: | 10.1109/TPWRD.2016.2556423 |
| ORCIDs: | Holbøll, Joachim |
ATP-EMTP environment Cables Capacitance Current measurement Electric charge Electric circuit breakers Electric power system interconnection Electric power systems Electric surges Electric utilities Electrical and Electronic Engineering Energy Engineering and Power Technology Offshore wind farms Over-voltages Plant shutdowns Power quality Power system protection Reconfigurable hardware Submarine cables Surges Switches Switchgear Switching Switching transient Time domain Time domain analysis Transient analysis Transients Underwater cables Vacuum circuit breaker Voltage measurement Wind farms Wind power Wind power plants offshore installations offshore wind farms overvoltage overvoltages power system security submarine cable switchgear switching transient overvoltages switching transients time-domain modelling transformer terminal voltage vacuum circuit breaker (VCB) vacuum circuit breaker switching overvoltages vacuum circuit breakers validation wind farm power collection system wind power plants
