水泵水轮机甩负荷工况导叶关闭规律优化  

Optimization of Pump-turbine Guide Vane Closing Law under Load Rejection Condition

作　　者：王振营[1] 胡宗邱 李红辉 WANG Zhenying;HU Zongqiu;LI Honghui(Harbin Electric Machinery Company Limited,Harbin 150040,China;China Three Gorges Construction Engineering Corporation,Chengdu 610042,China)

机构地区：[1]哈尔滨电机厂有限责任公司,哈尔滨150040 [2]中国三峡建工(集团)有限公司,成都610042

出　　处：《机械工程师》2023年第11期127-128,131,共3页Mechanical Engineer

摘　　要：抽水蓄能机组水力过渡过程特性品质主要体现在水泵水轮机甩负荷工况大波动的控制参数。为了研究导叶关闭规律对水泵水轮机甩负荷工况关键参数的影响,文中采用有压瞬变流理论特征线法,分析了不同关闭规律对甩负荷过程中压力、转速、尾水管真空度等参数的敏感性。研究结果表明,过渡过程中的最大转速上升值发生在机组流量较大时导叶一关一拒工况,导叶关闭规律对转速极值的影响不是很敏感;尾水管最低压力发生在相继甩负荷工况。The characteristics and quality of the hydraulic transient process of pumped storage units are mainly shown in the large fluctuation control parameters under load rejection conditions of pump-turbine.In order to study the influence of guide vane closing law on the key parameters of pump-turbine under load rejection condition,the characteristic line method of pressure transient flow theory is used to analyze the influence of the closing law on the parameters such as pressure,speed,and draft tube vacuum during the load rejection process.The research shows that the maximum speed increase in the transition process occurs in the condition that the guide vane is closed and rejected when the flow rate of the unit is large,and the closing rule of the guide vane is not very sensitive to the influence of the extreme value of the speed;the minimum pressure of the draft tube occurs in the successive load rejection.condition.

关 键 词：甩负荷 导叶关闭规律 最大转速 最低压力 

分 类 号：TV743[水利工程—水利水电工程]