波浪扰动下调压室对水电站尾水管压力的影响  

Influence of surge chamber on water head at the draft tube in hydropower station under wave disturbance

作　　者：陈满 晏文杰 高彦明 杨桀彬[2] 杨建东[2] CHEN Man;YAN Wenjie;GAO Yanming;YANG Jiebin;YANG Jiandong(China Southern Power Grid Peak and Frequency Modulation Power Generation Co.,Ltd.,Guangzhou 510635,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)

机构地区：[1]南方电网调峰调频发电有限公司,广东广州510635 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2023年第6期679-684,共6页Engineering Journal of Wuhan University

基　　金：国家重点研发计划项目(编号:2017YFB0903700)。

摘　　要：针对某一洞双机带上下游调压室的输水发电系统,采用总体矩阵法对不同频率的波浪扰动下尾水调压室对机组尾水管处压力的影响作用进行了分析。结果表明:当波浪扰动频率对应的振荡周期与尾水调压室理论波动周期相近时,调压室不能有效地反射水锤波、降低机组尾水管处的水头振幅;而当两者振荡周期差别较大时,调压室对减小其上游侧水头振荡有显著作用。For a water transmission and power generation system with two units sharing one tunnel and two surge chambers located upstream and downstream respectively,the global matrix method is applied to analyse the influence of the tail-water surge chamber on the pressure at the tail-water draft tube of the unit under wave disturbance of different frequencies.The results indicate that when the oscillation period corresponding to the wave disturbance frequency is close to the theoretical fluctuation period of the tail-water surge chamber,the surge chamber cannot effectively reflect the water hammer and reduce the head amplitude at the draft tube of the unit.However,if the two periods are quite different,the surge chamber has a significant effect on reducing the head oscillation at the upstream side.

关 键 词：抽水蓄能电站 强迫振荡 总体矩阵法 调压室 波浪扰动 

分 类 号：TV743[水利工程—水利水电工程]