Transient instability is one of the major threats to system security which can cause out-of-step condition. Out-of-step condition can result in mechanical and thermal damage to generators. Therefore, in the case of out-of-step, early detection and disconnection of the generator from grid is essential. In this article, using generator rotor speed-acceleration (ω − α) data obtained from phasor measurement units (PMU) measurements, a new algorithm for predicting out-of-step condition for generators is proposed. The trend of the movement of the (ω − α) locus curve in the plane provides a measure for predicting and detecting out-of-step status. The predictive ability of this method enables early tripping of the unstable generator, thereby avoiding hazard damage. The proposed algorithm is examined using an IEEE 39 bus system. The simulation results demonstrate the ability of the proposed algorithm for correct prediction of various unstable power swing conditions, with sufficient early prediction compared with the actual instability time.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A New Algorithm for Predicting Out-of-step Using Rotor Speed-acceleration Based on Phasor Measurement Units (PMU) Data




    Publication date :

    2015




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    53.33 / 53.33 Elektrische Maschinen und Antriebe



    Optimal placement of Phasor Measurement Units by genetic algorithm

    Allagui, B. / Ben Aribia, H / Hadj Abdallah, H. | IEEE | 2012



    A Brief Review of Phasor Measurement Units as Sensors for Smart Grid

    Mohanta, Dusmanta Kumar | Online Contents | 2016


    Optimal Placement of Micro-Phasor Measurement Units in Active Distribution Systems Using Mixed-Integer Programming

    Murty, V. V. S. N. / Ramakrishna, P. / Pamshetti, Vijay Babu et al. | TIBKAT | 2022


    Phasor measurement applications in Scandinavia

    Akke, M. / Karlsson, D. | Tema Archive | 2002