董箐水电站偏工况运行水力振动分析  

Theoretical analysis and numerical simulation of bias vibration in Dongjing Hydropower Station

作　　者：陈永涛 王洪祥 司序 何继全 CHEN Yong-tao;WANG Hong-xiang;SI Xu;HE Ji-quan(Dongjing Power Station,Zhenfeng 562200,China;Key Laboratory of fluid and power machinery,Ministry of education,Xihua University,Chengdu 610039,China;Beijing ZhongyuanRuixun Technology Co.,Ltd.,Beijing 100085,China)

机构地区：[1]董箐发电厂,贵州贞丰562200 [2]西华大学流体及动力机械教育部重点实验室,四川成都610039 [3]北京中元瑞讯科技有限公司,北京100085

出　　处：《水电站机电技术》2022年第1期20-22,35,141,共5页Mechanical & Electrical Technique of Hydropower Station

摘　　要：为了分析贵州董箐电站水轮机在低水头、大开度和满负荷的工况下测试到的剧烈振动现象,文章对该工况的工作水头进行了验算,发现了在毛水头110m、出力218.863MW、80.4%导叶相对开度工况下,水电站的实际工作水头仅为106m,该工况点偏离了水轮机厂家给定的合理运行区间,出现了偏工况运行,导致水轮机在该工况点发生了剧烈振动。In order to analyze the severe vibration phenomenon measured by the hydraulic turbine of Dongjing Hydropower Station in Guizhou Province under the working conditions of low head,large opening and full load,the working head of this working condition is checked,and it is found that under the condition of 110 m gross head,and 218.863 MW 80.4% relative opening of guide vane,the actual working head of the hydropower station is only 106 m,which deviates from the reasonable operation range given by the hydraulic turbine manufacturer.The partial operation occurs,which leads to the violent vibration of the hydraulic turbine at this operating point.

关 键 词：混流式水轮机 水力振动 净水头 

分 类 号：TK730[交通运输工程—轮机工程]