دانلود مقاله ISI انگلیسی شماره 58296
عنوان فارسی مقاله

احتمال خرابی خطوط اضافه بار در خرابی های آبشاری

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
58296 2015 8 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Probability of failure of overloaded lines in cascading failures
منبع

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

Journal : International Journal of Electrical Power & Energy Systems, Volume 73, December 2015, Pages 141–148

کلمات کلیدی
آبشاری خرابی های؛ خط بالاسری اضافه بار؛ مدل حرارتی؛ روش احتمالات
پیش نمایش مقاله
پیش نمایش مقاله احتمال خرابی خطوط اضافه بار در خرابی های آبشاری

چکیده انگلیسی

Power grids are vulnerable to cascading failures, as shown by previous blackouts or major system disturbances. Line outages due to overload are often the main contributors to the cascading failures leading to these undesired situations. Indeed, the more a line is overloaded, the larger is its sagging, and hence the probability that it will be tripped. It is necessary to quantify in a realistic way the probability of trip as a function of the load in order to compute a good estimation of the frequency of dangerous cascading outages. Several models were proposed for this purpose, but none of them is backed up by empirical evidence or detailed analysis. This paper studies factors that could affect the probability of trip as a function of load, and it computes this probability for two different test systems using a temperature simulation based methodology, called dynamic PRA level-I analysis. This paper then compares existing modelings of this probability to these results. This comparison shows that all modelings used in the literature are not always convenient. We finally propose a simple model that can be adopted in probabilistic risk assessment of cascading failures.

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