An analytical method is demonstrated which allows the level of negative phase sequence (NPS) voltage at a busbar to be expressed as a sum of phasors representing independent sources. The method is extended to enable the balancing capability of Static Var Compensators (SVCs) with individual phase voltage control to be assessed. The capability of such SVCs and the allowable levels of NPS voltage on the system, including any short term limits, can be combined in a capability chart showing the unbalanced loads which can be supplied from a substation. The approach facilitates the treatment of fixed unbalances due to filters or intentional offsets designed to maximise the SVC balancing range for specific loads. Field tests results are presented which validate the analyitcal methods used.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Using phasors to analyze power system negative phase sequence voltages caused by unbalanced loads


    Weitere Titelangaben:

    Anwendung von Vektoren zur Analyse von durch unsmymmetrische Belastung hervorgerufenen gegenläufigen Spannungen in Energienetzen


    Beteiligte:
    Ledwich, G. (Autor:in) / George, T.A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1994


    Format / Umfang :

    7 Seiten, 11 Bilder, 10 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Vehicle generator-inverter for split-phase unbalanced loads

    LU XI / ZOU KE / BHAT KRISHNA PRASAD et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    Negative Sequence Control for Virtual Synchronous Machines Under Unbalanced Conditions

    Avdiaj E. B. / D'Arco S. / Piegari L. et al. | BASE | 2022

    Freier Zugriff

    Unbalanced snow loads on gable roofs

    O'Rourke, M. J. / Auren, M. | British Library Conference Proceedings | 1997


    DUAL ACTIVE BRIDGE CONTROL CIRCUIT FOR USE WITH UNBALANCED GRID VOLTAGES

    JOHNSON PHILIP MICHAEL / BROWN ALAN WAYNE | Europäisches Patentamt | 2020

    Freier Zugriff