A novel adaptive hydro-wind-photovoltaic integrated base short-term scheduling solution: Considering sudden water pollution incidents

Abstract

Hydro–wind–photovoltaic complementarity is an important way to promote new energy consumption. Aiming at the demand for emergency dispatching for sudden water pollution incidents in cascade hydropower stations, this paper proposes a short-term optimal scheduling solution for hydro-wind-photovoltaic integrated base considering sudden water pollution incidents. Firstly, a day-ahead dispatching model is established, and the DBO algorithm is employed to determine the optimal day-ahead dispatching plan. Secondly, an emergency dispatching model is established with the objective of the shortest pollutant arrival time and the largest concentration accumulation value. The power generation plan deviation as the constraints to formulate an emergency dispatching plan after a sudden water pollution incident. Finally, a hydro-wind-photovoltaic integrated base under construction in Guizhou Province, China, is used as an example for the study. The results show that the emergency dispatching plan does not significantly reduce the system power generation performance (the average daily power generation decreases by only 0.27%, and the residual load fluctuation increases by only 0.15%), but it can shorten the pollutant arrival time by 10.76%, increase the concentration accumulation value by 1.61%, and improve the ability of the integrated base to cope with the sudden pollution incidents.