Day-ahead coordinated scheduling of hydro and wind power generation system considering uncertainties

Abstract

This paper presents a day-ahead coordinated scheduling method of hydro and wind power generation system (HWPGS) with consideration of uncertainties. In this method, we first formulate the coordinated scheduling model with two-part price and power flow constraints, which can well manifest the fixed and variable economic benefits as well as the secure operation of HWPGS, respectively. Then, interval analysis is adopted to study effect of uncertain wind power, water inflow, and electricity load on the coordinated scheduling model. Finally, we use a real test system in a western area of China to conduct simulation studies, which verify the effectiveness of interval analysis and the effect of price mechanism on the day-ahead coordinated scheduling of HWPGS.