Parameter adjustment of power system stabilizers for single machine- infinite bus system using the current sensitivity model

• Grant number: 16/19346-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: December 01, 2016
• End date: November 30, 2017
• Field of knowledge: Engineering - Electrical Engineering - Power Systems
• Principal Investigator: Percival Bueno de Araujo
• Grantee: Marcos Parra Júnior
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

This undergraduate project proposes to adjust the stabilizer signal parameters in a single machine-infinite bus system with a transmission line to improve the performance when occurring small deviations. Therefore, a linear model of the electric power system known as Current Sensitivity Model - CSM, is considered. This is an alternative of the classical Heffron & Phillips Model and to the Power Sensitivity Model. The study and computational implementation of the Current Sensitivity Model were realized in another project supported by FAPESP (Process number 2014/07594-6).The power system stabilizer aims to introduce additional electric torque to damp the oscillations present at the electric system. This way, this torque is generated in phase with the rotor angular velocity of the synchronous generator. Several ways to form the electric torque using the single machine-infinite bus system represented by the CSM were studied during the process FAPESP n. 2015/13718-2.Once the realization of the stabilizer is understood and defined its structure, the adjustment of the parameters is realized using, for example, the compensation phase method. The parameter adjustment being realized, the equations describing the stabilizer will be computationally implemented to be included on the CSM aiming to the stability studies (the implementation will use the MATLAB software, as well as the others that were already implemented in previous projects).The small signal stability analysis is realized by time domain simulations (analyzing the time curves of determined parameter after occurring such perturbation) and on the frequency domain (analyzing the eigenvalues of the state matrix). A better understanding of the stabilizer acting for small deviations will be provided discussing the obtained results. This undergraduate project is for one year. (AU)