24 تیر 1403
رحمن دشتي

رحمن دشتی

مرتبه علمی: دانشیار
نشانی: دانشکده مهندسی سیستم های هوشمند و علوم داده - گروه مهندسی برق
تحصیلات: دکترای تخصصی / مهندسی برق
تلفن: +98-7731222752
دانشکده: دانشکده مهندسی سیستم های هوشمند و علوم داده

مشخصات پژوهش

عنوان Fault section estimation in power distribution network using impedance-based fault distance calculation and frequency spectrum analysis
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
ثبت نشده‌است!
مجله IET Generation Transmission & Distribution
شناسه DOI
پژوهشگران رحمن دشتی (نفر اول) ، جواد ساده (نفر دوم)

چکیده

In this study, a practical method is proposed for determining the distance and the section of fault in power distribution system (PDS). In the suggested method, at ?rst the possible fault points are determined using a novel impedance-based fault location method. Since the number of these points may be more than one, thus two methods are proposed for determining the real location of fault. In the ?rst method, the measured and recorded samples of voltages at the beginning of feeder for actual fault are compared with the stored samples of voltages which are obtained from simulating of fault at the possible fault points. The one with highest matching is the real location of fault. In the second method, frequency spectrum (FS) of voltage is de?ned as a suitable criterion for this purpose. Therefore the real fault point is determined by comparing and matching the FS of voltages obtained from the simulated faults and the recorded voltage for actual fault. The performance of the proposed method is evaluated in a real feeder in distribution network of Iran considering different types of faults, fault resistances, fault inception angles, real instrument transformer models and X/R ratio changes of upstream PDS network. The obtained results show that the performance of the proposed method is quite satisfactory and its accuracy is very high.