Coordinated control of PSS and FACTS for poor damping long-term oscillations in multi-machine power systems

J. Shen, C. Liu, R. Yokoyama, M. Ishimaru

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Citations (Scopus)

    Abstract

    The stabilization of power system oscillations between interconnected areas is very essential for the secure system operation. Although PSS and FACTS devices have been applied to multi-machine power systems for enhancing the system stability, only use of the conventional PSS may not provide sufficient damping particularly for inter-area oscillations. In these circumstances, FACTS controllers are expected to be effective solutions. Furthermore, in recent years, with the deregulation of the electricity market, the traditional concepts and practices of power systems that new construction of equipment should be continued to maintain the supply reliability have changed. Better utilization of the existing power systems to increase capacities by allocating FACTS devices becomes imperative. However, FACTS, such as TCSC has been used conventionally to regulate the local mode oscillation. In this paper, a coordinated control of PSS and FACTS devices is proposed to improve the inter-area mode oscillation at the minimum cost. The approach presented here enables us to allocate a set of TCSC to improve the stability of interconnected power systems. The proposed approach determines the location of controllers by making use of the eigenvalue analysis, the active power sensitivity and the Linear Quadratic Regulator. Moreover, this approach adopts the H infinitive norm as a stability index for optimally allocating controllers.

    Original languageEnglish
    Title of host publication39th International Universities Power Engineering Conference, UPEC 2004 - Conference Proceedings
    Pages323-327
    Number of pages5
    Volume1
    Publication statusPublished - 2004
    Event39th International Universities Power Engineering Conference, UPEC 2004 - Bristol
    Duration: 2004 Sep 62004 Sep 7

    Other

    Other39th International Universities Power Engineering Conference, UPEC 2004
    CityBristol
    Period04/9/604/9/7

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    Keywords

    • FACTS
    • Japanese power system
    • Low-frequency oscillation
    • Power system stabilizer

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Shen, J., Liu, C., Yokoyama, R., & Ishimaru, M. (2004). Coordinated control of PSS and FACTS for poor damping long-term oscillations in multi-machine power systems. In 39th International Universities Power Engineering Conference, UPEC 2004 - Conference Proceedings (Vol. 1, pp. 323-327)