摘要
针对风沙多发区抽水蓄能电站的风沙入库量估算及考虑风沙入库的过机含沙量计算方法较少的问题,以新疆若羌抽水蓄能电站为例,采用现场观测、数值模拟等方法对动力入库沙量及降尘入库沙量进行了估算,并采用水沙数模软件PPSS-SUS,对考虑风沙入库后的抽水蓄能电站过机含沙量进行了模拟。结果表明,上、下水库总入库输沙量分别为133.2、242.2t/年。工程运行100年,抽水工况下多年平均过机含沙量17.24mg/L,放水工况下多年平均过机含沙量17.22mg/L。本文提出的适合于风沙多发区抽水蓄能电站的风沙入库量估算方法和考虑风沙入库的抽水蓄能电站过机含沙量计算方法,可为风沙多发区同类型抽水蓄能电站泥沙设计提供依据,保障工程运行安全、延长工程使用年限,减小风沙原因引起的工程淤积、机组损耗等导致的经济损失。
In response to the lack of research and methods for estimating the inflow of sand blown into pumped storage power stations in areas with frequent sandstorms,and the calculation of sediment concentration through the turbine considering sand blown,this article takes the Ruoqiang pumped storage power station in Xinjiang as an example,and uses on-site observation,numerical simulation and other methods to estimate the amount of sand blown into the reservoir.The water sediment numerical simulation software PPSS-SUS is used to simulate the sediment concentration through the turbine of pumped storage power stations considering the sand blown.The results indicate that the total sediment transport capacity of the upper and lower reservoirs is 133.2t/yr and 242.2t/yr,respectively.According to the calculation of 100 years of engineering operation,the average annual sediment concentration passing through the turbine under pumping conditions is 17.24mg/L,and the average annual sediment concentration passing through the turbine under discharge conditions is 17.22mg/L.The method proposed in this article for estimating the inflow of sand blown into pumped storage power stations in areas with frequent sandstorms,as well as the calculation method for the sediment content of pumped storage power stations considering sand blown,can provide a basis for sediment design of similar pumped storage power stations in areas prone to wind and sand,ensuring the safety of project operation,extending the service life of the project,and avoiding economic and social losses caused by sand blown factors such as sedimentation and electromechanical equipment losses.
作者
张璇
王琦
王盼
程龙
ZHANG Xuan;WANG Qi;WANG Pan;CHENG Long(Power China Northwest Engineering Corporation Limited,Xi’an 710100,China;China Renewable Energy Engineering Institute,Beijing 100120,China)
出处
《水电与抽水蓄能》
2025年第4期57-65,共9页
Hydropower and Pumped Storage
基金
国家自然科学基金、黄河自然科学基金、黄河水科学研究联合基金项目“黄河上游水资源演变对水光风储多能互补影响”(U2243232)
水电水利规划设计总院科技项目“可再生能源参与电力市场竞价模式研究”(ZX-KJGH-20220003)。
关键词
抽水蓄能电站
风沙入库
过机含沙量
数值模拟
沙尘环境预报
pumped storage power stations
sand blown into the reservoir
sediment concentration in the turbine
numerical simulation
sand and dust environment forecast
