دانلود مقاله ISI انگلیسی شماره 54469
عنوان فارسی مقاله

افزایش ثبات سیستم های چند ماشینه با استفاده از بازبست تطبیقی خطوط انتقال

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
54469 2014 7 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Stability enhancement of multi-machine systems using adaptive reclosing of transmission lines
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Electrical Power & Energy Systems, Volume 62, November 2014, Pages 391–397

کلمات کلیدی
خطوط انتقال؛ بازبست تطبیقی، پایداری گذرا؛ SIME؛ کاهش نوسان توان
پیش نمایش مقاله
پیش نمایش مقاله افزایش ثبات سیستم های چند ماشینه با استفاده از بازبست تطبیقی خطوط انتقال

چکیده انگلیسی

When a fault occurs in high voltage (HV) and Extra High Voltage (EHV) lines, they could automatically be re-entered to the circuit by auto-reclosing operation of transmission switches after passing a certain time from the first tripping operation. It is due to the fact that most of the faults occurred in HV/EHV transmission systems have a corresponding arc which could be removed just after de-energizing the line. To ensure successful reclosing, de-energizing interval addressed as dead time is conventionally determined, based on the calculation of the time needed for quenching subsequent weakened secondary arc. However, on-fault reclosing is probable even if dead time is conservatively selected. It can lead to severe power swings and put the system in danger of instability especially in vastly loaded networks. These swings will be intensified or weakened upon rotor angular speeds of dominant generators in reclosing instant, which is the key factor in acceleration or deceleration of power swing. Therefore power oscillation can be mitigated by adaptive selection of dead time. In this paper, a new method for dead time calculation is proposed in order to mitigate power oscillations effectively. The proposed method can also be implemented in on-line monitoring and control algorithms due to low amount of calculation. In this approach, single machine infinite bus equivalent (SIME) method is used for the evaluation of power oscillations.

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