چکیده مقاله
According to the IEEE standards 1547 2003 Islanding concept is a condition in which a portion of the utility system that contains both loads and Distributed Generation DG remains energized while isolated from the remainder of the utility system and in this condition DG must be disconnected at most within 2 seconds Propose of this paper is, fast and accurate method for Distributed generation islanding detection in the unbalance distribution networks in presence of Multi DG MDG based on analysis of DG transient terminal voltage by using Discrete Wavelet Transform DWT and Daubechies mother wavelet Aany possible event in the distribution network devided in two groups including : islanding and non islanding Normal utilization, Faults include 3 ph, 2 ph, 2 ph to ground, 1 ph to ground in all buses, Load switching, DG switching, Capacitor banks switching conditions with employing of DWT, requirement features by the third level of decomposition classified and accordingly events divided two groups islanding and non islanding erformance of proposed method tested on IEEE 13 Node Test Feeder This system have two different types of DGs that are synchrounous and asynchronous generators The PSCAD/EMTDC from Manitoba HVDC research center sued to simulate the different scenario studied and analysing to be optimized in therms of indices such as: accuracy, speed, simplicity and reliability By evaluation, it was determined that proposed method compared with conventional islanding detection method is able to islanding detecting in presence of MDG with high speed and high accuracy
کلیدواژهها
نویسندگان
Amir Hossein Kimiai Asadi
Department of Electric Engineering, Hamedan Branch, Islamic Azad University, Hamedan,Iran
Hassan Meyar Naimi
Department of Electric Engineering, Hamedan Branch, Islamic Azad University, Hamedan,Iran
Alireza Jahangiri
Department of Electric Engineering, Hamedan Branch, Islamic Azad University, Hamedan,Iran
شیوه ارجاع
Kimiai Asadi, Amir Hossein and Meyar Naimi, Hassan and Jahangiri, Alireza,1395,An Multiple DG Islanding Detection Method Base on The DWT in Unbalance Distribution networks,2nd National Congress of Electrical and Computer Engineering of Iran,Ramsar
ارائهشده در
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