特大型机组飞轮力矩GD^(2)与导叶关闭规律的关系研究  

Study on the Relationship Between Flywheel Torque GD^(2) and Guide Vane Closing Rule of Super Large Units

作　　者：张超[1] 陈建国 孙心洲 ZHANG Chao;CHEN Jianguo;SUN Xinzhou(PCCC Northwest Engineering Corporation Limited,Xi’an 710065,Shaanxi,China;Xi’an University of Technology,Xi’an 710048,Shaanxi,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [2]西安理工大学,陕西西安710048

出　　处：《电网与清洁能源》2021年第8期98-101,共4页Power System and Clean Energy

基　　金：国家自然科学基金资助项目(51279162)。

摘　　要：特大型机组飞轮力矩的取值对调节保证参数以及系统稳定性有着重要的影响。该文结合某高海拔地区水电站工程实例,建立仿真模型,研究特大型机组飞轮力矩取值与不同导叶关闭规律之间的关系。结果表明:导叶选取直线关闭规律时,受转速升高控制,特大型机组飞轮力矩都存在一个最小临界值;而在折线关闭规律下,高海拔地区电站的尾水管进口最小压力受规范约束条件的限制,其飞轮力矩的取值同样受限。The value of the flywheel torque of the super large unit has an important influence on the adjustment guarantee parameters and the stability of the system.In this paper,a simulation model is established based on an example of a hydropower station project in a high-altitude area to study the relationship between the value of the flywheel torque of the unit and the closing laws of different guide vanes.The results show that when the guide vane selects the straight-line closing rule,the flywheel torque of the super large unit has a minimum critical value under the control of the increase in speed;under the broken-line closing rule,the minimum pressure of the draft tube inlet of the power station in high altitude areas is restricted by the specification constraints and the value of the flywheel torque is also limited.

关 键 词：飞轮力矩 导叶关闭规律 过渡过程 特大型机组 尾水管进口压力 

分 类 号：TV732.5[水利工程—水利水电工程]