改善水轮机过渡过程品质的导叶异步关闭方式  

Guide vane asynchronous closure mode for improving the transient quality of hydroturbine

作　　者：李小芹[1] 常近时[1] 李长胜 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]辽宁蒲石河抽水蓄能有限公司,丹东118000

出　　处：《水力发电学报》2014年第1期202-206,共5页Journal of Hydroelectric Engineering

基　　金：中央高校基本科研业务费专项资金(2012QJ055)

摘　　要：水电站运行实际表明,甩负荷过渡过程中,机组发生转速上升和系统水压力上升有可能诱发重大事故,特别是水头较高的水电站,压力上升过高对水力机械装置的安全性影响重大。为了降低压力上升值,本文提出了水轮发电机组甩负荷过渡过程的一种合理关闭方式,经与常规关闭方式的数据相比较,可以显著改善水轮机装置甩负荷过渡过程的动态品质,显著降低水轮机引水系统的水压上升值。The operation ofhydropower stations shows that an increase in rotational speed or system water pressure during the transient of load rejection may cause major accidents. Particularly in high-water head hydropower stations, a significant pressure rise can have negative influences on the safety of hydraulic machine installation. The current study presents a reasonable control mode for reduction of pressure rise at the transient stage of load rejection. Comparison of the calculations with the regular control mode shows a considerable improvement by this control mode over dynamic quality of turbine equipment through pressure rise control of load rejection.

关 键 词：水力机械 导叶异步关闭 内特性 过渡过程 

分 类 号：TK733.1[交通运输工程—轮机工程]