抽水蓄能机组过渡过程导叶不同关闭规律研究
On Different Closing Laws of Guide Vanes in Transition Process of Pumped Storage Units
翟进男 1蔡卫江 2张明磊 1杨圣锐 1齐轩 1初云鹏2
作者信息
- 1. 河北丰宁抽水蓄能有限公司,河北 丰宁 068350
- 2. 南瑞集团有限公司(国网电力科学研究院),江苏 南京 211106
- 折叠
摘要
由于水力振动等因素,早期的导叶延时关闭、球阀联合关闭已不适应抽水蓄能电站要求.针对多座电站可逆式机组水轮机甩负荷及水泵断电采用的导叶"先快后慢"、"先慢后快"、"直线关闭"方式,进行统计分析和比较研究表明,水轮机甩负荷工况下采用先快后慢两段折线关闭,水泵断电工况下采用直线关闭,能满足绝大多数电站过渡过程大波动要求,可以优先考虑;并给出了如考虑事故配压阀关闭导叶,也需要分段关闭和设置相应的关闭组合装置等建议.
Abstract
Due to factors such as hydraulic vibration,the previously commonly adopted delayed closing and the ball valve combined closing schemes of guide vanes are no longer suitable for pumped storage power stations.In the load re-jection and pump power outage processes of the reversible turbine units in several power stations,different guide vane closing schemes such as"fast then slow closing","slow then fast closing"and"straight line closing"schemes are a-dopted.Statistical analysis and comparative studies show that the requirements of large fluctuation in the transition process can be satisfied in most stations if the two-stage"fast then slow closing"scheme is adopted for the load rejection condition and the"straight line closing"scheme is adopted for the pump power outage condition,which should be given priority consideration.Also,it is suggested that if emergency pressure distribution valve is used for guide vane closing,it is also necessary to adopt sectional closing scheme and install the corresponding closing combination devices.
关键词
抽水蓄能机组/分段关闭/直线关闭/甩负荷/水泵断电Key words
pumped storage unit/sectional closing/linear closing/load rejection/pump power outage引用本文复制引用
出版年
2024
NETL
NSTL
万方数据