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  • simple and efficient method for steady-state voltage stability assessment of radial distribution systems

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1158
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
    a new static voltage stability index of a radial distribution system is proposed to faithfully evaluate the severity of the loading situation, thereby predicting for voltage instability at definite load value. the proposed index includes different parameters which affect the steady-state voltage stability of distribution systems, therefore it gives accurate results. the maximum value of 1 of that index denotes the point where the system reaches the point of collapse whereas a minimum value of 0 shows the state of no load. the performance of the new index was tested on two radial distribution systems consisting of 33 and 85 buses. comparison between the results of the new index and those of previous indices showed that the new index yielded reliable results in predicting voltage stability condition of the system. the new index overcomes the problem which faces many previous indices especially as the load approaches the critical point. analysis of the two-bus equivalents of the test systems under different scenarios is also presented. a new p–q plane of stability is introduced based on the equation of the proposed index. the active, reactive and apparent power margins are then directly determined from the voltage stability boundary.

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