Design of Low-Frequency AC Transmission System for Offshore Wind Farms
نویسنده
چکیده
In recent years the amount of electricity produced from wind has grown rapidly. Offshore wind farm is currently seen as a promising solution to satisfy the growing demand for renewable energy source. The main reasons for the rapid development of offshore wind farms includes much better wind resources and smaller environmental impact. However, the current state of the offshore wind farms presents economic challenges significantly greater than onshore. The integration of offshore wind farms with the main power grid is a major issue. The possible solutions for transmitting power from wind farms are HVAC, Line commutated HVDC and voltage source based HVDC (VSCHVDC). In this paper Low Frequency AC (LFAC) transmission system is used for interconnecting the offshore wind farms for improving the transmission capability and also the dc collecting system with series connected wind turbines are used at the offshore to reduce the cabling requirement. Design of system components and their control strategies are discussed. Simulations are performed using MATLAB/SIMULINK to illustrate the system’s performance. Keywords— High voltage AC (HVAC), high voltage DC (HVDC), permanent magnet synchronous generator (PMSG), thyristor converters, underwater power cables, wind farms.
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