Parameter identification method for prime mover model of axial-flow Kaplan turbine

• Main Authors: WU ZAIQIANG, XU ZHENHUA, JIANG SHIXIONG, LIN DEYUAN, ZENG ZHONGWANG, LIN YATAO, ZHANG HOUYU, YANG HAIYUN, WANG GUANHONG, TAO XIANGYU, YAO YE, LI YINGJIE
• Format: Patent
• Language: Chinese; English
• Published: 15.07.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention relates to an axial-flow Kaplan turbine prime mover model parameter identification method. The method is suitable for parameter identification of the axial-flow Kaplan turbine described by adopting a rigid water hammer model and a water diversion system of the axial-flow Kaplan turbine. Due to the fact that when the axial flow movable propeller turbine operates, guide vanes and paddles act in a combined mode, the guide vane opening degree and the action of the paddle opening degree on mechanical power are mutually coupled, and therefore seven to-be-identified model parameters are difficult to accurately identify through a conventional identification method. According to the method, the prime mover model is divided into the guide vane link and the paddle link, and the guide vane link and paddle link parameters are sequentially identified in combination with a de-association field test mode, so that the identification efficiency and accuracy are improved. 本发明涉及一种轴流转桨式水轮机原动机模型参数辨识方法。该方法适用于采用刚性水击模型描