Title :
Multi-terminal DC wind farm collection and transmission system internal fault analysis
Author :
Yang, Jin ; Fletcher, John E. ; O´Reilly, John
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Glasgow, Glasgow, UK
Abstract :
The multi-terminal DC wind farm is a promising topology with a voltage source inverter (VSI) connection at the onshore grid. Voltage source converters (VSCs) are robust to AC side fault conditions, however, they are vulnerable to DC faults on the farm side of the converter. This paper analyses DC faults, their transients and resulting protection issues. All kinds of fault overcurrents are analysed in detail and these contribute to protection system design. The radial wind farm topology with star or string connection is considered. The outcomes are applicable for VSCs in both the multi-VSC DC wind farm collection grid and VSC-based high voltage direct current (HVDC) transmission systems for offshore wind farms.
Keywords :
HVDC power convertors; HVDC power transmission; offshore installations; overcurrent protection; power transmission faults; power transmission protection; wind power plants; HVDC; VSC; VSI connection; high voltage direct current transmission systems; multiterminal DC offshore wind farm collection; onshore grid; overcurrent protection; transmission system internal fault analysis; voltage source converters; voltage source inverter connection; Capacitors; Circuit faults; Power conversion; Switchgear; Topology; Wind farms; Voltage source converter (VSC); fault overcurrent; multi-terminal DC wind farm; wind power generation;
Conference_Titel :
Industrial Electronics (ISIE), 2010 IEEE International Symposium on
Conference_Location :
Bari
Print_ISBN :
978-1-4244-6390-9
DOI :
10.1109/ISIE.2010.5637547