Evaluation of H2 preview load frequency control considering the prediction error of load demand

Abstract

In recent years, renewable energies have been introduced into the power grids in large quantities due to the global warming and resource depletion. However, since power generation by renewable energy depends on the surrounding environment, maintaining a balance between supply and demand for electricity is an important issue. On the other hand, the development of solar radiation forecasting and short-period wind power forecasting technologies is providing the predictive information for the control of power systems. In this paper, we design an 𝐻2 preview control law for the load frequency control systems, which considers the prediction error of the information. The strength and limitation of the preview LFC is investigated from the viewpoints of the prediction error and the resulting frequency variation.