矿井式抽水蓄能电站地下巷道群水力过渡过程特性研究  

Hydraulic Transient Process Characteristics of Underground Roadway Group in Mine-type Pumped Storage Power Station

作　　者：张沛顶 苗梅 朱丽至 韩云[1] 邬敏 周建旭[3] 马枫林[1] 王育芳 张洪亮[1] 滕云龙 李尊龙 ZHANG Pei-ding;MIAO Mei;ZHU Li-zhi;HAN Yun;WU Min;ZHOU Jian-xu;MA Feng-lin;WANG Yu-fang;ZHANG Hong-liang;TENG Yun-long;LI Zun-long(Shanghai Datun Energy Co.,Ltd.,Xuzhou 221611,China;China Electric Power Development Research Institute Co.,Ltd.,Beijing 100053,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210024,China)

机构地区：[1]上海大屯能源股份有限公司,江苏徐州221611 [2]中电联电力发展研究院有限公司,北京100053 [3]河海大学水利水电学院,江苏南京210024

出　　处：《水电能源科学》2023年第12期113-116,104,共5页Water Resources and Power

摘　　要：矿井式抽水蓄能电站利用地下巷道群作为下库,在水力过渡过程中存在复杂多变的明满流流态,直接影响系统的运行稳定性和巷道群的水力安全。基于水力系统3D数值模拟技术,考虑下库充水、发电甩荷和抽水断电3个控制工况,分析巷道群水流的过渡过程特性及水力参数的演变规律,评估其对巷道群水力安全的影响。研究表明,下库(巷道群)在初次充水过程中无明显的不利流态,下库死水位发电甩荷时调节池水位下降幅度小于0.4 m,下库正常蓄水位抽水断电时调节池水位上升幅度小于10.0 m;巷道群在过渡过程均能正常进排气,巷道断面明满流等流态过渡平稳,调节池和通风道满足水力优化布置要求,可保障巷道群的水力安全。The phenomenon of mixed free-surface-pressure flow exists in the process of water level variation in the lower reservoir(roadway group)of mine-type pumped storage power station,which directly affects the operation stability of the system and the hydraulic safety of the roadway group.Based on 3D numerical simulation technology of hydraulic system,considering the three controlling cases including lower reservoir water filling,load rejection and pumping power failure,the characteristics of the transition process of water flow in roadway group and the evolution law of related hydraulic parameters were analyzed,and its influence on the hydraulic safety of roadway group was evaluated.The research shows that there is no obvious unfavorable flow pattern in the initial water filling process of the lower reservoir(roadway group);For load rejection with dead water level of the lower reservoir,the water level of the regulating pool decreases by less than 0.4 m,and for pumping power failure with the normal water level of the lower reservoir,the water level of the regulating pool increases by less than 10.0 m;The roadway group can enter and exhaust normally during the transition process,and the hydraulic transitions in the roadway section is smooth including the possible free-surface-pressure flow;The regulating pool and the ventilation channel meet the requirements of hydraulic optimization to ensure the hydraulic safety of the roadway group.

关 键 词：矿井式抽水蓄能电站 地下巷道群 通风道 过渡过程 数值模拟 

分 类 号：TV671[水利工程—水利水电工程]