Methodology for Synchronous Hydrogenerator Parameter Identification Based on Monitoring System Measurement

Abstract

A methodology for identifying the parameters of a synchronous hydrogenerator in operation (on-line) has been defined, which is based on measurements available within the hydrogenerator monitoring system. The identification procedure uses data from recorded responses of generator variables in the small displacement regime, in quasi-stationary and transient states, with the application of appropriate estimation models and procedures. The identification procedure is divided into three steps, and the theoretical verification of each step, based on appropriate simulation responses, gave very good results for all parameters of the standard mathematical model of a synchronous hydrogenerator. Experimental research was carried out using a measuring system installed on a 26 MVA generator in the Peruca HPP on the Cetina River. Experimental results for synchronous reactance in the longitudinal and transverse axes of the machine are presented. The paper also defines a procedure for identifying the parameters of the equivalent network using the same measuring system. The accuracy of the estimation of the parameters of the alternative network was verified by measurements on a laboratory model, and the results obtained by measurements in the actual operation of the Peruca HPP are also presented.

Marin Despalatović

Full Professor | Department of Electrical Drives and Industrial Control

Full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split, where he teaches courses Electric Machines, Electric Drive Systems, and Electromechanical System Modeling. His research focuses on power systems, energy storage, and smart grid technologies, with active participation in multiple national and international projects aimed at advancing energy infrastructure and improving system stability.

Božo Terzić

Full Professor | Department of Electrical Drives and Industrial Control

Full professor at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture in Split, with significant contributions in the field of industrial development projects including the design of prototypes of electronic converters used in industrial plants around the world. His research interests are focused on the application of electronic converters in electric drives and renewable energy sources.