机构地区:[1]贵州乌江水电开发有限责任公司水电站远程集控中心,贵州贵阳550002 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [3]长江水利委员会水文局,湖北武汉430010 [4]长江水利委员会流域水模拟与预报调度智能技术创新中心,湖北武汉430010
出 处:《中国农村水利水电》2025年第1期111-116,123,共7页China Rural Water and Hydropower
基 金:科技部重点研发计划长江黄河等重点流域水资源与水环境综合治理项目(2023YFC3006604);国家自然科学基金项目(52394233);贵州乌江水电开发有限责任公司科研项目资助(6017D202300042)。
摘 要:在国家“双碳”战略背景下,合理的水库汛期运行水位动态控制可在兼顾流域防洪安全前提下提高洪水资源利用率,充分发挥水利枢纽的综合效益。构皮滩、思林、沙沱水电站是乌江中下游干流梯级电站,由于现有防洪库容是基于单库调洪计算,并未考虑水库联合调度运行,汛期运行水位静态控制,电站机组出力受限,汛期综合效益尚未得到充分发挥。研究基于预报预泄和库容补偿作用,统筹乌江中下游多区域防洪风险,构建梯级水库汛期运行水位动态控制调度模型,对基于构皮滩水库的拦蓄作用下抬升思林、沙沱水库运行水位的动态策略及其风险进行研究。研究结果表明:实施梯级水库联合防洪预报调度可以抬升思林、沙沱水库前汛期(6-7月)运行水位2.10~3.86 m、6.09~6.42 m,后汛期(8月)可分别抬升4.17~4.86 m和6.21~6.42 m,并可以减轻梯级枢纽、乌江中下游保护对象(思南县和沿河县)和长江中下游的防洪风险。研究结果可为构皮滩、思林、沙沱梯级水库汛期防洪及洪水资源利用的安全运行提供技术参考。In the context of the national strategy of carbon emission peak and carbon neutrality,implementing dynamic water level control during the flood season can enhance the utilization of flood resources and fully leverage the comprehensive benefits of water conservancy hubs while ensuring flood safety in the basin.The Goupitan,Silin,and Shatuo hydropower stations serve as the primary cascade power stations in the middle and lower reaches of the Wujiang River.Since the current flood control capacity relies on single-reservoir calculations of flood regulation,neglecting joint scheduling and operation,the operating water level during the flood season is statically controlled,thereby limiting power station output and failing to fully realize comprehensive flood season benefits.Based on forecasted pre-discharge and reservoir capacity compensation,this study coordinates flood control risks across multiple regions in the middle and lower reaches of the Wujiang River,constructed a dynamic control and dispatch model for the operating water levels of cascade reservoirs during the flood season and studied the dynamic strategies and risks of raising the operating water levels of the Silin and Shatuo reservoirs based on the impoundment of the Goupitan reservoir.The study findings indicate that implementing joint flood forecasting and dispatching for cascade reservoirs can increase the operating water levels of Silin and Shatuo reservoirs by 2.10~3.86 meters and 6.09~6.42 meters respectively in the pre-flood season(June-July),and by 4.17~4.86 meters and 6.21~6.42 meters in the post-flood season(August),respectively.This approach can also mitigate flood control risks for the cascade hubs,the middle and lower reaches of the Wujiang River(Sinan and Yanhe counties),and the middle and lower reaches of the Yangtze River.The results of this study can provide technical guidance for the safe management of flood control and the utilization of flood resources during the flood season in the Goupitan,Silin,and Shatuo cascade reservoirs.
分 类 号:TV697.13[水利工程—水利水电工程]
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