Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back The study of features of hydraulic unit functioning based on the comprehensive analysis of vibration control system data T.G. PENKOVA, A.V. KOROBKO, Yu.N. VALOV The level of modern software and hardware systems for monitoring the technical state of equipment at hydroelectric power plants as well as accumulated large amounts of data create the necessary conditions for development of methods and technologies for analytical assessment of the state of equipment based on comprehensive analysis of monitoring data. This paper presents the study of behavior features of the hydraulic unit in different modes by applying the data mining techniques – principal component analysis and cluster analysis – to data of the vibration control system. During the study the principal components have been selected and interpreted taking account of the contribution of the data attributes to the principal components; on the plane of two principal components the five-cluster structure has been constructed that describes the points in time with typical system behavior; the analysis of time series of controlled parameters at these characteristic points in time has been carried out. The comprehensive analysis of monitoring data has allowed us to discover the features and patterns in the functioning of the hydraulic unit, detect the character of influence of its constructive elements, identify the ratio of the ranges of key parameters values in various modes of equipment operation. Keywords: Multidimensional data analysis, Principal component analysis, Cluster analysis, Vibration control, Hydraulic unit, Technical condition of equipment, Resource management. DOI: 10.25791/pribor.12.2018.307 Contacts: E-mail: penkovatg@gmail.com Pp. 36-45.