某巨型水电站机组发电效率下降探究及原因分析  

Research and cause analysis of the decrease in power generation efficiency of a giant hydropower station

作　　者：简新平 翟昕辰 杨鹏[1] 艾心 JIAN Xin-ping;ZHAI Xin-chen;YANG Peng;AI Xin(China Yangtze Power Co.,Ltd.Three Gorges Hydropower Plant,Yichang 443133,China)

机构地区：[1]中国长江电力股份有限公司三峡水力发电厂,湖北宜昌443133

出　　处：《水电站机电技术》2021年第3期1-4,119,共5页Mechanical & Electrical Technique of Hydropower Station

摘　　要：水电站中混流式水轮机具有结构简单、水头范围宽和高效率等优点,但运行情况中也暴露出一些问题,其中较为突出的是水轮机出力受阻达不到额定出力。本文对某电站机组发电效率下降现象进行探究,并提出了对该现象进行原因分析的方法。Francis turbines in hydropower stations have the advantages of simple structure,wide head range and high efficiency.However,some problems have been exposed in the operating situations.The more prominent one is that the output power of the unit is blocked and can’t reach the rated power.This article mainly explores the phenomenon of efficiency decline in power generation,and proposes a method to analyze the cause of the phenomenon.

关 键 词：混流式水轮机 有功调整 效率下降 额定出力 水头损失 

分 类 号：TK733.1[交通运输工程—轮机工程]