A Small Isolated Power System SCUC Model with State-Controllable Wind Power

Abstract

Small isolated power systems are generally located in remote areas which are rather far away from the power grid. Renewable energy such as wind power is introduced into small isolated power systems directly to reduce power generation cost and increase the economy. However, it brings challenges on the operation and control of small isolated power system. To insure the economy and stability of small isolated power systems, this paper puts forward a small isolated power system unit commitment model with state-controllable wind power. Wind turbines are regarded as state-controllable and discrete-regulated random power sources in the proposed model to reduce the operation risk of power system. Furthermore, based on scenario analysis, the model is solved with L-shaped algorithm which decouples discrete variables and continuous variables while decoupling of deterministic and random variables is used to decrease calculation burden of the problem. Finally, the case analysis indicates the feasibility and validity of the proposed model.