| 电站运行对流量时间序列影响评价方法初探 |
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| 引用本文： | 吴佳鹏,程东升,刘来胜.电站运行对流量时间序列影响评价方法初探[J].中国农村水利水电,2011(4). |
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| 作者姓名： | 吴佳鹏 程东升 刘来胜 |
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| 作者单位： | 中国水利水电科学研究院水环境研究所,北京,100038 |
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| 基金项目： | 国家自然基金项目(51021066)、(51009150); 国家水体污染控制与治理科技重大专项项目(2008ZX07425-005) |
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| 摘 要： | 大坝建设会对河流水文情势带来影响,进而影响河流生态系统.针对水电站调度对河流水文情势影响评价问题,引入分形理论,采用分形维数来评价电站调度对水文情势的影响程度,并将其用于东江上游枫树坝电站调度对其下游水文情势影响评价.采用龙川水文站49 a日流量数据进行计算,并与变差系数、峰度值进行对比分析,结果表明,分形维数与变差系数、峰度值对流量过程变化表征一致.分形维数明确表征洪水的集散程度和变化频率,即洪水集中,变化频率低,分维数相对较小;反之,分维数相对较大.同时,分形维数可以用来评价年度水文过程的自相似性.
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| 关 键 词： | 河流水文情势 水电站调度 分形维数 盒维数 水文年 |
An Assessment of the Impact of Flow Time Series from Hydropower Station Scheduling |
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| WU Jia-peng
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CHENG Dong-sheng
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LIU Lai-sheng.An Assessment of the Impact of Flow Time Series from Hydropower Station Scheduling[J].China Rural Water and Hydropower,2011(4). |
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| Authors: | WU Jia-peng CHENG Dong-sheng LIU Lai-sheng |
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| Institution: | WU Jia-peng,CHENG Dong-sheng,LIU Lai-sheng(Department of Water Environment,IWHR,Beijing 100038,China) |
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| Abstract: | The predicted increase in hydropower station building due to energy demand is expected to affect river water regime and,in turn,cause river ecosystem impacts.To understand the potential impact of hydropower station scheduling on river hydrological regime,this paper outlines a methodology based on fractal dimension to quantify the effects of hydropower station scheduling on river water regime for Fengshuba Hydropower Station in the upstream of the Dongjiang River in China.Using 49a observed data from the Lon... |
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| Keywords: | river hydrological regime hydropower station scheduling fractal dimension box-counting hydrological year |
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