张河湾电站水轮机额定水头和吸出高度的选择与分析  

Selection and analysis of rated head and static suction head of turbine of Zhanghewan Pumped Storage Power Station

作　　者：马保东 刘更海 黄国平 

机构地区：[1]河北张河湾蓄能发电有限责任公司,河北石家庄050300

出　　处：《水电站机电技术》2016年第12期1-3,8,共4页Mechanical & Electrical Technique of Hydropower Station

摘　　要：在张河湾抽水蓄能电站上、下水库特征值不变的情况下,机组的额定水头选择305 m或300 m,从蓄能机组的稳定性、效率和泥沙磨损方面进行分析,运用国外稳定运行经验曲线进行论证,推荐了张河湾电站机组的额定水头;用各厂家推荐的统计公式计算本电站的吸出高度,并与国外厂商提供的询价资料进行比较,确定其范围;用水泵汽蚀比转速经验公式,对张河湾吸出高度分别取-46 m、-48 m和-50 m进行计算,最后推荐电站的吸出高度值。对国内外中、高水头的抽水蓄能电站对国外稳定运行经验曲线和水泵汽蚀比转速经验公式进行了验证,证实了其可行性。Under the condition of constant characteristic values of upstream and downstream reservoirs of the Zhanghewan Pumped Storage Power Station, the rated head of unit is taken as 305 m or 300 m. Through analysis on stability, efficiency and sand erosion of pumped storage unit, and demonstration using foreign stable operation empirical curves, the rated head of unit for the Zhanghewan Pumped Storage Power Station is recommended. The static suction head of the Zhanghewan Pumped Storage Power Station is calculated using the statistical formula recommended by manufacturers, and its range is determined through comparison with inquiry data provided by foreign manufacturers. With the empirical formula of cavitation specific speed of water pump, the static suction heads of the Zhanghewan Pumped Storage Power Station are taken as-46 m,-48 m and-50 m for calculation, to recommend the static suction head of the power station. The foreign stable operation empirical curves and the empirical formula of cavitation specific speed of water pump used for medium- and high-head pumped storage power stations at home and abroad are verified, to demonstrate the feasibility.

关 键 词：抽水蓄能 额定水头 吸出高度 选择 

分 类 号：TK734[交通运输工程—轮机工程]