Fault Location in Distribution Networks with the Presence of Distributed Generation Units Based on the Impedance Matrix
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ORIGINAL CONTRIBUTION
Fault Location in Distribution Networks with the Presence of Distributed Generation Units Based on the Impedance Matrix Seyed Mohammad Sadegh Hosseinimoghadam1 • Masoud Dashtdar1
•
Majid Dashtdar1
Received: 9 August 2020 / Accepted: 9 November 2020 The Institution of Engineers (India) 2020
Abstract The study of ‘‘fault rapid detection and resolution’’ in the power network is particularly important in sensitive areas of the network. Today, the use of distributed generation in the distribution network is increasing. In the event of an accident, if the fault location is quickly identified, the recovery of the faulty network is accelerated and the shutdown time is minimized. Since distributed generation networks do not have the traditional methods of fault location, accurate and efficient performance, so in this paper, for the least interrupted power supply, a new method for locating and identifying the faulted part of the distribution system with the presence of distributed generation is studied. The proposed method is based on the impedance matrix of the distribution network which has high speed and accuracy in fault location and also has high accuracy in simulations considering the asymmetry of loads and network. In this paper, simulations are implemented in OpenDSS software under various fault conditions and the results are processed in MATLAB software. Keywords Distributed generation Distribution network Fault location Asymmetric network Impedance matrix
& Masoud Dashtdar [email protected] Seyed Mohammad Sadegh Hosseinimoghadam [email protected] Majid Dashtdar [email protected] 1
Electrical Engineering Department, Bushehr Branch, Islamic Azad University, Bushehr, Iran
Introduction The continuity of power supply to sensitive centers is of paramount importance. If there is a problem with power stations, transmission, and distribution networks, as well as electricity substations, there is a problem with the continuity of power supply to these centers. And if this network failure is not resolved in the shortest possible time, sensitive centers will lose the necessary performance and will see irreparable damage in the shortest possible time. In this paper, we attempt to provide a practical way to quickly and accurately fault location in the distribution network without the need for network protection devices. When a fault occurs in the network, the network protection relays, by detecting the fault, issue the necessary commands to the relevant keys and, if necessary, the faulted line is separated from the network. If the fault is persistent, it is important to know the exact faulted line because the known lack of a fault location forces repairers to inspect the full length of the line to find the damaged point. The solution to this problem is to use systems that can accurately estimate the fault location. Fault-finding systems have many tasks that can estimate the probability of a fault location with a low computational error. One of the most important probl
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