Open AccessExperimental Study on On-line Monitoring Technology of Hydropower Station Induced Discharge
Author(s) -
Guihua Qi,
Chunlin Yang,
Changqing Du
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/706/1/012010
Subject(s) - hydropower , flow measurement , calibration , flow (mathematics) , turbine , marine engineering , line (geometry) , environmental science , ultrasonic flow meter , engineering , electrical engineering , mechanical engineering , mathematics , mechanics , statistics , physics , geometry
In this paper, the water level, tail water level and active power of hydropower generating units are collected and transmitted in real time by using the water level gauge, power collector and other measuring and sensing instruments. Using MATLAB least square fitting simulation algorithm, the three-dimensional surface function of hydraulic turbine characteristics is obtained, and the efficiency of turbine operating point is calculated based on this function. Through the calibration calculation of the background data center, the reference flow of the hydropower station can be obtained on-line in real time, and verified by the comparison test between the reference flow system of the hydropower station and the Nanrui fu911 ultrasonic flowmeter. The results show that the flow measurement data of hydropower station reference flow system and ultrasonic flowmeter have the same change trend, and the flow measurement data of hydropower station reference flow system meet the requirements of class I accuracy class < 9% specified in GB 50179-2015 “Specification for river flow measurement”, which provides an effective method for on-line monitoring of reference flow of hydropower station.