摘要
针对国内某电站大型水力发电机组出现的低频功率振荡问题,进行了大量现场试验研究和分析,排除了调节系统、励磁系统等非水力因素的影响,探明机组的低频功率振荡与机组负荷和尾闸室水位有着密切关系。由此,通过在尾闸室与尾水主洞汇流点之间的两个尾水支洞内增加消能装置,有效地缓解和消除了机组的低频功率振荡,提高了电站及其电网的安全运行水平,保障了电站经济效益。
Aiming at the problem of low frequency power oscillation of a large hydroelectric generating set in a domestic hydropower station,a large number of field tests and analyses are carried out,and the influences of some non-hydraulic factors such as the regulating system and excitation system on the power oscillation are excluded.Meanwhile,it is found that the low frequency power oscillation is closely related to the tailwater level.Based on these,the energy dissipation device is added in two tailrace tunnels,which effectively reduces and eliminates the low frequency power oscillation of the large hydroelectric generating set,and improves the security of the hydropower station and power grid,and further guarantees the economic benefits.
作者
陆杰
张海库
李勇
闫懂林
王峻峰
郑阳
LU Jie;ZHANG Haiku;LI Yong;YAN Donglin;WANG Junfeng;ZHENG Yang(Sichuan Datang International Ganzi Hydroelectric Co.,Ltd.,Kangding 626001,Sichuan,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,Hubei,China;Datang Hydropower Science&Technology Research Institute Co.,Ltd.,Chengdu 610074,Sichuan,China)
出处
《水力发电》
CAS
2021年第8期83-87,114,共6页
Water Power
基金
国家自然科学基金项目(52009096)
大唐集团公司科研项目:大型混流式水电机组有功振荡控制优化关键技术及实践。
关键词
水力发电机组
低频功率振荡
尾水波动
消能坎
hydroelectric generation set
low frequency power oscillation
tailwater fluctuation
energy dissipation barrier
