Online data-based hydroelectric generating set hydraulic unbalance fault automatic analysis and diagnosis method

• Main Authors: HUANG JIANYING, ZHANG MINWEI, ZHUANG MING, ZHENG JIE, LIANG PENGCHAO
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2017
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention provides an online data-based hydroelectric generating set hydraulic unbalance fault automatic analysis and diagnosis method. The method includes the following steps that: 1) the 1X component and blade frequency component of a swing and vibration signal under a no-load condition are obtained through calculation; 2) the 1X components and blade frequency components of a plurality of swing and vibration signals under different load conditions are obtained through calculation; and 3) the vector difference amplitude of the 1X components of the plurality of swing and vibration signals and the 1X component of the swing and vibration signal under the no-load condition and the vibration vector difference amplitude of the blade frequency components and the blade frequency component under the no-load condition are obtained through calculation; 4) the linear correlation coefficient of the vibration vector difference amplitude of the 1X components of the swing and vibration signals and loads and the linear c