On the Complementary Dispatching of Hydro-Wind-Photovoltaic Energies in the Lower Jinsha River Basin
In the complementary operation and management of the hydro-wind-photovoltaic multi energies in the lower Jinsha River Basin,various difficulties are encountered such as the increased systematic difficulty,complex and variable dispatching requirements,and uncertainties in multiple temporal and spatial scales.Thus,the hydro-wind-photovoltaic multi energy complementarity of the river basin is analyzed.Studies on the long-term and short-term coupling dispatching of the multi energy complementary system show that the overall complementarity of the hydro-wind-photovoltaic resources in the lower Jinsha River Basin is good.For short-term dispatching,it is suggested to give priority to the grid connection of new energies.The relationship between the hydropower output and the wind and photovoltaic power curtailment shows a characteristic of large at both ends and small in the middle range.If the wind and photovoltaic energies are combined with the hydropower energy to form a complementary system and medium to long-term dispatching is adopted,the power generation of the multi energy complementary system will be increased by 0.40%to 0.48%,in which the cascade hydro-power stations will lose 0.08%to 0.25%of their power generation compared to independent operation,while the con-sumption rate of wind and photovoltaic energies can be increased by 3.97%to 5.99%.
lower reaches of Jinsha Riverhydro-wind-photovoltaic energy complementationcomplementarity analysisshort-term dispatchingmedium to long-term dispatching
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