Power Reference Control of Wind Farms Based On the Operational Limit

Wind farms usually produce power irregularly, due to  unpredictable change of wind speed. Accordingly, we should  determine the penetration limit of wind power to consider stability of  power system and build a facility to control the wind power. The  operational limit of wind power is determined as the minimum  between the technical limit and the dynamic limit of wind power. The  technical limit is calculated by the number of generators and the  dynamic limit is calculated by the constraint of frequency variation  when a wind farm is disconnected suddenly. According to the  determined operational limit of wind power, pitch angles of wind  generators are controlled. PSS/E simulation results show that the pitch  angles were correctly controlled when wind speeds are changed in  addition to loads.

• Dae-Hee Son
• Seung-Hwa Kang
• Sang-Hee Kang
• Soon-Ryul Nam

• Pitch Angle
• Dynamic limit
• Operational limit
• Technical limit.

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