随着水电补偿调节风光负担的加重,黄河上游地区水资源竞争关系日益复杂.通过建立水风光中长期协同运行模型,对典型年和不同风光出力进行组合,分析不同风光比例下各组目标之间的竞争关系及成因,尤其是防凌、灌溉等特殊时期,结果表明:凌汛初期较大的出库流量导致后续可用水量减小;水电需要补偿调节不稳定的风光出力从而导致出库流量无法满足灌溉期的流量需求;典型年竞争关系随来水的降低而复杂,不同风光比例下的竞争关系随风光占比的增加而复杂.研究成果可供水资源多目标综合利用研究参考.
With the increasing demand on hydropower to compensate and regulate the wind and photovoltaic power,the competitive relationship on water resources in the upper reaches of the Yellow River becomes more complex.A medium to long term hydropower-wind-photovoltaic collaborative operation model is established.Combinations of typical years and different wind and photovoltaic power outputs are studied.The competitive relationship and its causes between each group of objectives under different wind and photovoltaic power proportions are obtained,especially for ice prevention and irrigation periods.The results show that the large outflow in the early ice flood period leads to a decrease in available water amount in the subsequent period.Hydropower needs to compensate the unstable wind and photovoltaic power out-puts,resulting in the inability of the outflow to meet the irrigation demand during the irrigation period.The competitive relationship in typical years becomes more complex with the decrease of the incoming water flow.Also,the competitive relationship under different wind and photovoltaic power proportions becomes more complex with the increase of the pro-portion.The results can be useful reference for the multi-objective comprehensive utilization of water resources.