摘要
可变速抽水蓄能机采用二次三相交流励磁．转子呈圆筒形，其绕组三相分布．可变速抽水蓄能机组具有与常规抽水蓄能机组相同的功能．且在一定水头下抽水运行，负荷可调范围达±8万kW．并能稳定电网频率；发电工况可在最优出力转速下运行，出力变化范围大，部分负荷时综合效率高，不用调速器能高速（数十毫秒）控制有功功率，而与水泵水轮机出力无关，可提高系统稳定性．可抑制各种事故造成的过电压，并能在过电压和换向失败、系统事故时持续运行．
The adjustable-speed pumped-storage generator-motor is excited by two-order three-phase alternating current. The rotor of generator-motor is cylindrical, and the windings of rotor are fabricated on three-phase distributed windings basis. Thc functions of this generator-motor is identicalwith conventional pumped-storage generator-motor. The variable range of imput power can reach ± 80MW as pumping operation with a definite head, and it can stabilize the frequency of electrical sys-tem. The generator can operate with optimum output speed. The generator can operate with optimum output speed. The range of output variable is wide. The overall efficiency is high with partial load. It can control active power swiftly (about 10ms) even if no apply governor, and have no relation with pump-turbine output. It can improve the stabilization of system, and control over-voltage caused by all troubles. It can operate continually when there are over-voltage, failure of rotation direction chang-ing and system troubles.
出处
《水利水电技术》
CSCD
北大核心
1994年第11期15-21,共7页
Water Resources and Hydropower Engineering
关键词
可变速机组
抽水蓄能水电站
变频器
过电压
adjustable-speed generator-motor, frequency converter, over-voltage
