A study of wind power curtailment using frequency sensitivity and transient stability

Recently, some renewable energy sources such as wind power generation have been investigated extensively because of environmental problems associated with greenhouse gas emissions. Moreover, the suspension of nuclear power and feed-in tariff (FIT) systems accelerate the penetration of renewable energy, particularly wind power. In addition, there is more frequency deviation because of the fluctuation in the wind power output. Therefore, the importance of wind power curtailment is growing. However, there is a small study conducted on the curtailment method. In this paper, two optimal methods of the wind power curtailment are proposed in order to minimize the frequency deviation and maximize the transient stability, respectively. Further, in order to verify the validity of the proposed method, numerical simulations using a 9-machine 20-bus system are curried out.