Based on the field-survey prototype hydrology data in typical years, the effect during the running periods of different dispatch modes of the Three Gorges Reservoir on the water regimes in Dongting Lake area is compar...Based on the field-survey prototype hydrology data in typical years, the effect during the running periods of different dispatch modes of the Three Gorges Reservoir on the water regimes in Dongting Lake area is comparatively analyzed. The results are shown as follows. （1） The influence periods are from 25 May to 10 June, from 1 July to 31 August, from 15 September to 31 October and from December to the next April, among which the influence of the water-supplement dispatch in the dry season is not very sensitive. （2） During the period under the pre-discharge dispatch, the runoff volume slightly increases as well as both the average water level and the highest water level rise in the usual year. While in the wet and dry years, the average increase in the runoff volume is 40.25×1 08 m3 and the average rises of the average water level and the highest water level are both 1.06 m. （3） As for the flood-storage dispatch, the flood volume increases slightly, in the dry and wet years, the flood volume, the average water level and the highest water level averagely reduce by 444.02×108 m3, 2.64 m and 1.42 m respectively. （4） Under the water-storage dispatch, the runoff volume slightly in- creases and the water level heightens in a sort in the usual year. And in the dry and wet years the average decreases in the runoff volume, the average water leve/and the highest water levels are respectively 185.27×108 m3, 3.13 m and 2.14 m. （5） During the period under the water-supplement dispatch, the runoff volume, the average water level and the highest water levels averagely decline by 337.7×108 m3, 1.89 m and 2.39 m respectively in the usual and wet years. However, in the dry year, the runoff volume increases as well as the average and highest water levels slightly go up.展开更多
分布式光伏、储能及电动汽车等灵活性资源广泛接入低压台区,对台区可开放容量评估提出了新挑战。为此,提出了一种计及灵活性资源调控的低压台区可开放容量弹性区间评估方法。首先,建立了低压台区灵活性资源的数学模型,分析其可调节潜力...分布式光伏、储能及电动汽车等灵活性资源广泛接入低压台区,对台区可开放容量评估提出了新挑战。为此,提出了一种计及灵活性资源调控的低压台区可开放容量弹性区间评估方法。首先,建立了低压台区灵活性资源的数学模型,分析其可调节潜力。其次,基于灵活性资源优化调度并考虑不确定性因素,构建了信息间隙决策理论(informa-tion gap decision theory,IGDT)的低压台区可开放容量弹性区间评估模型。最后,通过不同台区算例仿真,从电源接入与负荷接入两个维度分析了多种灵活性资源组合下的可开放容量弹性区间,验证了模型的有效性。展开更多
基金National Natural Science Foundation of China, No.41071067 Program of the Key Discipline Construction of the Physical Geography in Hunan Province
文摘Based on the field-survey prototype hydrology data in typical years, the effect during the running periods of different dispatch modes of the Three Gorges Reservoir on the water regimes in Dongting Lake area is comparatively analyzed. The results are shown as follows. （1） The influence periods are from 25 May to 10 June, from 1 July to 31 August, from 15 September to 31 October and from December to the next April, among which the influence of the water-supplement dispatch in the dry season is not very sensitive. （2） During the period under the pre-discharge dispatch, the runoff volume slightly increases as well as both the average water level and the highest water level rise in the usual year. While in the wet and dry years, the average increase in the runoff volume is 40.25×1 08 m3 and the average rises of the average water level and the highest water level are both 1.06 m. （3） As for the flood-storage dispatch, the flood volume increases slightly, in the dry and wet years, the flood volume, the average water level and the highest water level averagely reduce by 444.02×108 m3, 2.64 m and 1.42 m respectively. （4） Under the water-storage dispatch, the runoff volume slightly in- creases and the water level heightens in a sort in the usual year. And in the dry and wet years the average decreases in the runoff volume, the average water leve/and the highest water levels are respectively 185.27×108 m3, 3.13 m and 2.14 m. （5） During the period under the water-supplement dispatch, the runoff volume, the average water level and the highest water levels averagely decline by 337.7×108 m3, 1.89 m and 2.39 m respectively in the usual and wet years. However, in the dry year, the runoff volume increases as well as the average and highest water levels slightly go up.
文摘分布式光伏、储能及电动汽车等灵活性资源广泛接入低压台区,对台区可开放容量评估提出了新挑战。为此,提出了一种计及灵活性资源调控的低压台区可开放容量弹性区间评估方法。首先,建立了低压台区灵活性资源的数学模型,分析其可调节潜力。其次,基于灵活性资源优化调度并考虑不确定性因素,构建了信息间隙决策理论(informa-tion gap decision theory,IGDT)的低压台区可开放容量弹性区间评估模型。最后,通过不同台区算例仿真,从电源接入与负荷接入两个维度分析了多种灵活性资源组合下的可开放容量弹性区间,验证了模型的有效性。
