混合式抽水蓄能电站水温影响研究

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中文摘要：[目的]常规电站水库水温结构的研究主要集中在气候变化的影响上，没有考虑抽水对水库水温结构的影响，且对抽水蓄能电站水库水温结构的研究也较少，为明晰抽蓄对水库水温的影响，[方法]以金沙江上游叶巴滩混合式抽水蓄能电站为研究对象，运用CE-QUAL-W2模型对水库表层水温、下泄水温和底层水温进行模拟，并分析混蓄前后上、下库的水温变化，以阐明混合式抽水蓄能水电站对水温的影响。[结果]结果显示:叶巴滩表层水温抽蓄前后最大变幅为5。8 ℃，底层水温最大变幅为2。8℃，下泄水温最大变幅为0。3℃;拉哇表层水温抽蓄前后最大变幅为1。8℃，底层水温最大变幅为0。1 ℃，下泄水温最大变幅为0。2℃。[结论]结果表明:(1)抽蓄对表层水温呈坦化作用，加强中层水体的掺混，增大底层水温的变幅;(2)混蓄对上下库水温的影响受到库区距离影响;(3)混蓄对上库叶巴滩和下库拉哇的下泄水温影响不显著。研究结果可为混合式抽水蓄能电站的水环境保护提供科学依据。

外文标题：Study on the effect of water temperature in a hybrid pumped storage power station

外文摘要：[Objective]The research on the water temperature structure of reservoirs of conventional power stations mainly focuses on the effect of climate change,without considering the effect of pumping on the water temperature structure of reservoirs,and there are less researches on the water temperature structure of reservoirs of pumped storage power stations,in order to make clea-rer the effect of pumping on the water temperature of reservoirs.[Methods]Taking the upper Jinsha River Yebatan hybrid pumped storage power station as the research object,the CE-QUAL-W2 model was used to simulate the reservoir surface water temperature,the discharge water temperature and the bottom water temperature,and to analyze the changes of the water tempera-ture in the upper and lower reservoirs before and after the mixing and storage,in order to elucidate the influence of the hybrid pumped storage hydropower station on the water temperature.[Results]The result show that:the maximum variation of surface water temperature before and after pumped storage in Yebatan was 5.8℃,the maximum variation of bottom water temperature was 2.8 ℃,and the maximum variation of discharge water temperature was 0.3 ℃;the maximum variation of surface water tem-perature before and after pumped storage in Lawa was 1.8 ℃,the maximum variation of bottom water temperature was 0.1 ℃,and the maximum variation of discharge water temperature was 0.2 ℃.[Conclusion]The result show that:(1)pumped storage had a franking effect on the surface water temperature,strengthened the mixing of the middle water body,and increased the am-plitude of the variation of the bottom water temperature.(2)The effect of mixed storage on the water temperature of the upper and lower reservoirs was affected by the distance of the reservoirs.(3)The effect of mixed storage on the temperature of the dis-charged water of the upper reservoir Yebatan and the lower reservoir Lawa was not significant.The result of this paper can provide a scientific basis for the water environment protection of hybrid pumped storage power stations.

外文关键词：

hybrid pumped storage power stationsurface water temperaturedischarge water temperatureupper and lower res-ervoirsCE-QUAL-W2 modelinfluencing factors

作者：

李璘君、杨世伟、王远铭、梁瑞峰、李克锋

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作者单位：

四川大学山区河流保护与治理全国重点实验室,四川成都 610065

关键词：

混合式抽水蓄能电站表层水温下泄水温上下水库 CE-QUAL-W2模型影响因素

基金：

科技基础资源调查专项资助国家自然科学基金联合基金重点项目

项目编号：

2022FY100203U2240212

出版年：

2024

DOI：

10.13928/j.cnki.wrahe.2024.09.012

水利水电技术(中英文)

水利部发展研究中心

水利水电技术(中英文)

CSTPCD北大核心

影响因子：0.456

ISSN：1000-0860

年,卷(期)：2024.55(9)