Title :
Coordinated control of multi-terminal VSC-HVDC transmission for large offshore wind farms
Author :
Gang Shi ; Guoxiang Wu ; Xu Cai ; Zhe Chen
Author_Institution :
Wind Power Res. Center & State Key Lab. of Ocean Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
Future offshore wind farms will have large power ratings and will be situated much further offshore than current projects. An outstanding issue to be solved is long distance transmission of bulk, fluctuant and widely dispersed wind power to onshore AC grid. The main objective of this paper is to investigate the coordinated control scheme of multi-terminal VSC-HVDC (MTDC) transmission for large offshore wind farms. Five MTDC topologies are sorted out from North Sea Super Grid network and a four-terminal topology is adopted for control scheme investigation, which is related to power delivery control and fault ride through control. The control effect and power system stability is evaluated by two dynamic simulation cases based on PSCAD/EMTDC, which correspond to wind power fluctuation and disconnection of one grid side converter station.
Keywords :
HVDC power transmission; offshore installations; power grids; power system stability; substations; wind power plants; MTDC topology; North Sea Super Grid network; PSCAD/EMTDC; coordinated control; fault ride; four-terminal topology; grid side converter station; long distance transmission; multiterminal VSC-HVDC transmission; offshore wind farms; onshore AC grid; power delivery control; power system stability; wind power fluctuation; HVDC transmission; Power conversion; Threshold voltage; Voltage control; Wind farms; Wind power generation; coordinated control; fault ride through; mulit-terminal VSC-HVDC; offshore wind farm; power delivery;
Conference_Titel :
Power Electronics and Motion Control Conference (IPEMC), 2012 7th International
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-2085-7
DOI :
10.1109/IPEMC.2012.6259035
