水库水位在线高精度测量方法研究

Implementation of High-Precision Online Water Level Measurement for Resevoirs

针对大中型水库高水位在线测量中传统测量方法精度不足的问题,应用比较测量、温度补偿等技术进行测量系统误差的动态校准;采用KALMAN滤波方法消除由波浪及测量系统导致的随机误差,并对恒温模式及水位测量实际温度分段模式进行测量精度分析。结果表明,结合温度补偿技术和KALMAN滤波方法的比较测量系统达到设计要求的一级标准0.02等级精度。

The accuracy of traditional measurement method is not enough in the online measurement of high water level in medium and large reservoirs.In view of this problem,based on the principle of water level measurement and using techniques like comparative measurement and temperature compensation,the errors of measurement system can be calibrate dynamically.Kalman filtering method is used to eliminate the random error in waves and collected measurement data.The measurement accuracy analysis is also carried out on the constant temperature mode and the actual water level measurement mode,and the result shows that the measurement system of this method meets the first-level design requirement at 0.02 grade of accuracy.