拉萨河流域梯级电站水光互补调度对水文情势的影响分析  

Impact of hydro-photovoltaic complementary operation of cascade hydropower stations on hydrological regimes in the Lhasa River Basin

作　　者：黄草 王乐灵 刘思思 姚雨洁 胡国华[1] HUANG Cao;WANG Leling;LIU Sisi;YAO Yujie;HU Guohua(School of Hydraulic and Environmental Engineering,Changsha University of Science&Technology,Changsha 410114,China;Key Laboratory of Dongting Lake Aquatic Eco-environmental Control and Restoration of Hunan Province,Changsha 410114,China)

机构地区：[1]长沙理工大学水利与环境工程学院,湖南长沙410114 [2]洞庭湖水环境治理与生态修复湖南省重点实验室,湖南长沙410114

出　　处：《水资源与水工程学报》2024年第3期40-50,共11页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金面上项目(52179004);湖南省水利科技项目(XSKJ2022068-04);长沙理工大学研究生科研创新项目(CXCLY2022070)。

摘　　要：梯级电站水光互补调度能提高光伏消纳能力和系统总发电量,但也要求调整梯级电站的调度规则,进而会加剧梯级电站下游的水文情势改变。为定量评价水光互补调度对水文情势的影响,以系统总发电量和总保证出力最大为目标,构建了拉萨河流域梯级电站水光互补优化调度模型,提出了基于水光互补的梯级电站优化调度方案,分析评价了不同优化调度方案的水文情势改变度。结果表明:梯级电站的水光互补优化调度能有效提升电力系统的总发电量和总保证出力;水光互补后拉萨河水文情势的综合改变度略大于水光互补之前,处于轻度至中度改变的临界值附近。研究成果可为拉萨河的水光互补调度及流域综合管理提供科学方法和依据。The hydro-photovoltaic complementary operation of the cascade power stations can improve the photovoltaic(PV)consumption capacity and the total system power generation,but it also requires the cascade power stations to adjust their operation rules,which will in turn exacerbate the changes in hydrological regimes in the downstream of the cascade power stations.In order to quantitatively evaluate the impact of the hydro-photovoltaic complementary operation on the hydrological regime,an optimal model of hydro-photovoltaic complementary operation of the cascade power stations in the Lhasa River Basin was constructed based on the target of maximizing the total power generation and total guaranteed output of the power system.Then the optimal operation plans of the cascade power stations were proposed based on the model,and the degree of change in the hydrological regime of different optimal operation plans were analyzed and evaluated.The results show that the hydro-photovoltaic complementary optimal operation of cascade power stations can effectively improve the total power generation and total guaranteed output of the power system;the integrated degree of change in hydrological regime of the Lhasa River after the hydro-photovoltaic complementary operation is slightly greater than that before the operation and both of them are in the vicinity of the threshold of light change to moderate change.The results of the study can provide an approach and technical support for the hydro-photovoltaic complementary operation and integrated watershed management in the Lhasa River Basin.

关 键 词：梯级电站 水光互补调度 水文情势 综合改变度 拉萨河流域 

分 类 号：TV697.12[水利工程—水利水电工程]