摘要
云南大华桥水电站是澜沧江上游河段的第六级电站,装机4台单机容量230MW的水轮发电机组,主要任务是发电,开在系统中承担调峰、调频和事故备用任务。大华桥水电站水轮机额定出力为234.7MW,水头变幅Hmax/Hmin=1.46,Hmax/Hr=1.20,水头变幅范围高于混流式水轮机常规的适应范围,为了适应电网的AGC运行,机组需要频繁在低负荷进行调峰、调频运行,因此对机组的稳定性要求更高。本文结合大华桥水电站特定的运行条件,提出了模型开发过程中改善大华桥水轮机水力稳定性的技术措施,通过模型试验及原型机试验验证,满足大华桥电站的实际运行特点。
The Dahuaqiao hydropower station is the sixth-level power station in the upper reaches of the Lancang River.The power station is equipped with 4 hydro generator units with a capacity of 230MW each.The main task is to generate electricity and act as peak and frequency modulation and accident backup in the system.The turbine rated output is 234.7MW,the variation range of head Hmax/Hmin=1.46,Hmax/Hr=1.20 is more than that of conventional Francis turbine.In order to adapt the AGC operation,the unit needs frequent peak-frequency modulation in small loads,therefore,the stability of the unit is higher.The article combined with the operational characteristics of Dahuaqiao hydropower station,put forward the measures to improve the stability of the turbine during the model development,through model and prototype experimental verification,meet the operational characteristics of Dahuaqiao hydropower station.
作者
冯绍彬
王向志
赵伟
FENG Shaobin;WANG Xiangzhi;ZHAO Wei(Huaneng Lancang River Hydropower INC.,Kunming 650000,China;State Key Laboratory of Hydro-power Equipment(HILEM),Harbin 150040,China)
出处
《大电机技术》
2020年第5期61-64,共4页
Large Electric Machine and Hydraulic Turbine
