摘要
效率试验是评估水轮机性能的一个重要方面,电站的经济运行就是基于水轮机的效率特性。近些年来,许多电站进行了原型水轮机组的效率试验。阐述了水轮发电机组现场效率测试的常用方法,并以卡伦Ⅲ水电站2号机组为例介绍了超声波效率试验的内容,包括测量方法和仪器、试验步骤、试验的不确定度和试验结果分析。总结了采用超声波法进行水轮机效率测试的经验,为今后开展水轮发电机组的效率测试工作提供了有益的借鉴。
The efficiency test is an important aspect for evaluating the performance of hydraulic turbine.The economic operation for a hydropower station is based on the efficiency characteristics of the turbine In recent years,the turbine efficiencies of prototype hydraulic turbine units have been measured in many hydropower stations.In this paper some methods of measuring hydraulic turbine efficiency are introduced.As a test method of concerning the efficiency test with ultrasonic wave,the absolute efficiencies at unit No.2 of Karun Ⅲ hydropower stations are measured.The analytic methods are presented in detail,including the measurement method and apparatus,test procedures,the uncertainty of test results and the test results are analyzed.Some experiences with water turbine efficiency test using ultrasonic method are summarized,which would be helpful to performing hydraulic turbine efficiency tests.
出处
《中国农村水利水电》
北大核心
2014年第4期151-154,共4页
China Rural Water and Hydropower
关键词
水轮机
效率试验
流量测量
超声波法
测量误差
hydraulic turbine
efficiency test
flow rate measurement
ultrasonic wave method
measurement uncertainty
