KYET水电站调压方式设计优化及关键技术  

Design Optimization and Key Technology for Surge Regulating Method of KYET Hydropower Station

作　　者：李江 崔炜[2] 孔昭年[2] 杨远生 朱新民[2] 周同旭 LI Jiang;CUI Wei;KONG Zhaonian;YANG Yuansheng;ZHU Xinmin;ZHOU Tongxu(Xinjiang Administration of Water Resources and Hydropower Planning and Design,Urumqi 830000,China;National Research Center for Sustainable Hydropower,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Tianjin Research Institute of Electric Science Co.,Ltd.,Tianjin 300301,China)

机构地区：[1]新疆水利水电规划设计管理局,新疆乌鲁木齐830000 [2]中国水利水电科学研究院国家水电可持续发展研究中心,北京100038 [3]天津电气科学研究院有限公司,天津300301

出　　处：《人民黄河》2019年第9期110-113,117,共5页Yellow River

基　　金：新疆维吾尔自治区天山英才工程第二期项目(2016-2018);国家重点研发计划项目(2016YFC0401804)

摘　　要：在KYET水电站早期设计阶段,针对长7100m的发电引水系统水力过渡过程,研究比较了调压井、气垫式调压室、调压阀等型式,初步推荐采用调压井作为调压方式。随着工作的深入,认识到采用调压阀替代调压井是可行的。利用水力过渡过程计算分析了带有调压阀的水轮机调节系统在一次调频、大/小波动工况的表现,并采用带调压阀的机组调节仿真试验系统进行了复核研究。基于计算和试验成果,进行了调压阀选型、布置和防抬机复核,并开展了优化方案效益分析。结果表明,该水电站采用调压阀方案能够解决机组转速和水道压力上升问题,满足机电设备和水工建筑物的运行和安全要求,以调压阀替代调压井是可行的,其经济、社会和生态效益显著。In the early design stage of KYET Hydropower Station in Xinjiang,the surge regulation methods of surge shaft,air cushion surge chamber and pressure relief valve(PRV)were studied and compared,aiming at the hydraulic transients of water diversion system with a length of 7 100 m.Surge shaft was initially recommended.With the development of design work,it was realized that it was possible to use PRV replacing surge shaft.In this paper,the performances of hydraulic turbine governing system under load cases of primary frequency mod?ulation and large/small fluctuation were analyzed with hydraulic transient process calculation,and verified with a turbine governing simulation test system having actual PRV supported by a national research project.Based on the calculation and test results,the selection,arrangement of PRV and the turbine anti?lift check were carried out.The benefits of surge regulation method optimization were analyzed.The results show that the use of PRV can solve the problems of turbine speed rising and water pressure rising in conveyance system and meet the operation and safety requirements of hydropower equipment and hydraulic structures;it is feasible to substitute PRV for surge shaft and its economic,social and ecological benefits are remarkable.

关 键 词：调压阀 调压方式 水电站 设计优化 关键技术 

分 类 号：TV734.4[水利工程—水利水电工程] TV732.5