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加纳布维水电站大坝枢纽工程Dam Hub Project for the Bui Hydropower Station, Ghana
加纳布维水电站工程位于加纳(Ghana)西部的黑沃尔特(Black Volta)河上，坝址以上控制流域面积123,000km2，坝址处多年平均流量207m3/s，多年平均径流量65.23亿m3，工程主要任务为发电和灌溉。布维水电站水库正常蓄水位183m NLD，相应库容125.7亿m3；死水位168m NLD，调节库容55.2亿m3，具多年调节能力。枢纽建筑物由挡水坝、进水口、压力钢管及地面厂房等组成。引水系统采用“单机单管”布置形式，尾水系统每台机单元布置。电站装机容量400MW(3´133.34MW)，保证出力342MW，多年平均发电量10.04亿kW·h，本电站出线电压等级为161kV，出线4回，一回至NEW KUMASI变电所，送电距离212km，一回至TECHIMAN变电所，送电距离约104km，一回至KUMASI变电所，送电距离219km，一回至WA变电所，送电距离约231km。我司承制该项目共有8台（套）液压启闭机，其中3台（套）3200KN/1600KN电站进水口液压启闭机，1台（套）630KN/250KN小机进水液压启闭机，5台（套）2500KN溢洪道表孔液压启闭机。
The Bui Hydropower Project is located on the Black Volta River in western Ghana. The controlled watershed area upstream of the dam site is 123,000 km², with a long-term average flow rate of 207 m³/s at the dam site and an average annual runoff of 6.523 billion m³. The primary purposes of the project are power generation and irrigation. The normal storage level of the Bui Hydropower Station reservoir is 183 m NLD, with a corresponding storage capacity of 12.57 billion m³. The dead water level is 168 m NLD, providing a regulated storage capacity of 5.52 billion m³ and multi-year regulation capability. The hub structures consist of a water-retaining dam, intake structures, penstocks, and an above-ground powerhouse. The water diversion system adopts a "one-penstock-per-unit" layout, and the tailwater system is arranged per unit. The installed capacity of the power station is 400 MW (3 × 133.34 MW), with a guaranteed output of 342 MW and an average annual energy generation of 1.004 billion kWh. The power station's outgoing line voltage level is 161 kV, with four lines: one to the NEW KUMASI substation (transmission distance: 212 km), one to the TECHIMAN substation (transmission distance: 104 km), one to the KUMASI substation (transmission distance: 219 km), and one to the WA substation (transmission distance: 231 km).
Our company was contracted to supply a total of eight (8) sets of hydraulic hoists for this project, including:
Three (3) sets of 3,200 kN/1,600 kN hydraulic hoists for the power intake;
One (1) set of 630 kN/250 kN hydraulic hoists for the small unit intake;
Five (5) sets of 2,500 kN hydraulic hoists for the spillway surface outlets.
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