水力机组相对效率试验工作水头的修正计算  

Working head correction calculation of relative efficiency test for hydraulic turbines

作　　者：黄波[1] 张军[1] 田海平[1] 

机构地区：[1]国网湖南省电力公司电力科学研究院,湖南长沙410007

出　　处：《湖南电力》2015年第4期24-26,共3页Hunan Electric Power

摘　　要：水力机组相对效率试验采用指数流量代替绝对流量,无法得到速度水头,因此引用的工作水头中往往忽略速度水头,造成试验结果存在误差。本文提出一种新的方法,可以有效地对计算工作水头进行修正,与实际工作水头更为接近,试验结果更为精确。The velocity head can not be obtained because the index flow is instead of absolute flow in relative efficiency test and the velocity head is often neglected in the traditional calculation of working head,which cause some error of test result. This paper presents a new method for the correction calculation of working head which makes the value of computation working head is close to the value of practical working head and the test results are more reliable.

关 键 词：水力机组 相对效率试验 工作水头 速度水头 

分 类 号：TM72[电气工程—电力系统及自动化]