Optimal allocation and PQ output ratio of NAS batteries for improving voltage stability in distribution systems

Toshiya Ohtaka, Shinichi Iwamoto

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

    8 Citations (Scopus)

    Abstract

    In recent years, many studies have been made on allocating NAS batteries (Natrium Sulfur batteries) in distribution substations to make good use of power facilities and improve the load factor. Besides, it has also been a hope to utilize NAS batteries for controls such as AFC (automatic frequency control) or VQC (voltage reactive-power control), because NAS batteries can respond faster than existing generator units and can control active and reactive power outputs independently by the function of AC-DC converter systems. In this paper, we propose a method for determining the optimal allocation and PQ output ratio of NAS batteries in order to improve voltage stability. The proposed method combines a sensitivity method with an optimal power flow calculation method to determine the allocation and PQ output ratio efficiently and optimally. Simulations are carried out for a 73-bus distribution system to illustrate and verify the proposed method.

    Original languageEnglish
    Title of host publicationProceedings of the IEEE Power Engineering Society Transmission and Distribution Conference
    Pages1369-1374
    Number of pages6
    Volume3
    EditionSUMMER
    Publication statusPublished - 2001
    Event2001 IEEE Power Engineering Society Summer Meeting - Vancouver, BC
    Duration: 2001 Jul 152001 Jul 19

    Other

    Other2001 IEEE Power Engineering Society Summer Meeting
    CityVancouver, BC
    Period01/7/1501/7/19

    Keywords

    • NAS battery
    • Optimal allocation
    • Optimal PQ output ratio
    • VIPI
    • Voltage stability

    ASJC Scopus subject areas

    • Energy(all)
    • Engineering(all)

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  • Cite this

    Ohtaka, T., & Iwamoto, S. (2001). Optimal allocation and PQ output ratio of NAS batteries for improving voltage stability in distribution systems. In Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference (SUMMER ed., Vol. 3, pp. 1369-1374)