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工程科学与技术:2022,54(1):16-22
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能源与水利结合模式探索——以南水北调西线光伏天河工程为例
(1.国网综合能源服务集团有限公司,北京 100052;2.清华大学 社会科学院,北京 100084;3.清华大学 能源互联网创新研究院,北京 100085)
Exploring the Mode of Energy and Hydraulic Engineering Combination — An Example of the Photovoltaic Tianhe Project of the South-to-North Water Diversion West Route Project
(1.State Grid Integrated Energy Service Group Co. Ltd., Beijing 100052, China;2.School of Social Sciences, Tsinghua Univ., Beijing 100084, China;3.Energy Internet Research Inst., Tsinghua Univ., Beijing 100085, China)
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投稿时间:2021-10-08    修订日期:2021-12-22
中文摘要: 在国家“3060”双碳能源战略背景下,南水北调工程为西部地区探索碳中和带来了新的机遇。然而,水利工程在建设过程中会造成大量碳排放,在碳约束下,水利工程应规划与部署减碳方案。南水北调作为世界最大的跨流域调水工程,其东线和中线工程一期方案已实施,西线工程的方案尚在论证与优化中。以南水北调西线工程为例,提出将能源与水利结合的创新模式,即光伏天河工程模式。光伏天河工程是将光伏阵列布设于西线工程的水渠水面及防护带地面上,从而形成规模宏大的带状光伏电站。南水北调西线工程全长超过2 300 km,除去隧道沟渠等部分,假设可铺设光伏面板的渠道长1 000 km,水面外加两侧防护带宽度,光伏天河总体安装面积达到120 km2。以每平米铺设120 W光伏面板进行计算,西线工程沿线可安装光伏14.4 GW。光伏天河系统每年发电量约1.87 × 109 kW·h,节约标煤约2.30 × 106 t,减少将近6.03 × 106 t的CO2排放量,有助于西线工程的整体减排降碳。以1 MW光伏装机为基准,光伏工程的投资回收年限为14 a,通过低息贷款和技术革新可缩短投资回收期。提出两点政策建议:一是,南水北调西线方案在规划时应考虑将调水与能源结合,在渠道全线布设光伏阵列搭建光伏天河;二是,沿西线节点建立规模不等的地面和漂浮式光伏电站及抽水蓄能电站,形成若干水光互补绿色能源基地。
Abstract:In the context of the national “3060” dual carbon energy strategy, the South-to-North Water Diversion Project will bring opportunity to China’s western district. In the carbon limitation background, decarbonization methods should be valued to compensate the significant carbon emissions from the hydraulic engineering project. As the world biggest water transfer project, the South-to-North Water Division Project has completed the first phase of the Center Route and East Route, and its West Route is under plan discussion. In consideration of the carbon emissions from the hydraulic project, we introduced a new mode combining energy and hydraulic engineering for decarbonization, by installing the photovoltaic panels upon the water and protection zone, named as photovoltaic Tianhe. Based on the original length of 2300 km for the West Route, the length for photovoltaic panels of 1000 km, including the water and protection zone, and the total area of 120 km2 were assumed. The whole photovoltaic volume would reach 14.4 GW, which will produce yearly 18.7 billion kW·h green electricity, save 2.3 million tons of the coal, and reduce 6.03 million tons of the CO2 emission to help decarbonize the whole West Route project. Taking 1 MW as the baseline, the return on investment of the photovoltaic project is calculated as 14 years, which could be shortened by low-interest loan and new technology. According to the above research, we made two policy suggestions: firstly, the energy and hydraulic combination mode should be considered within the West Route’s planning phase, building photovoltaic Tianhe project upon the water panel; secondly, to establish several water-solar combined green energy bases along the West Route, composing of ground photovoltaic power station, water floating photovoltaic power station and pumped-storage hydroelectricity.
文章编号:202101033     中图分类号:    文献标志码:
基金项目:国家电网“十四五”西北区域基于清洁能源的综合能源服务及重点项目(817899200163)
作者简介:第一作者:魏琦(1969-),男,教授级高级工程师.研究方向:综合能源服务及相关技术.E-mail:weiqi@sgecs.sgcc.com.cn;通信作者:何继江,E-mail:hejj@tsinghua.edu.cn
引用文本:
魏琦,白保华,何继江,延星,缪雨含.能源与水利结合模式探索——以南水北调西线光伏天河工程为例[J].工程科学与技术,2022,54(1):16-22.
WEI Qi,BAI Baohua,HE Jijiang,YAN Xing,MIAO Yuhan.Exploring the Mode of Energy and Hydraulic Engineering Combination — An Example of the Photovoltaic Tianhe Project of the South-to-North Water Diversion West Route Project[J].Advanced Engineering Sciences,2022,54(1):16-22.