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Overcurrent Relays Coordination in Interconnected Networks Using Accurate Analytical Method and Based on Determination of Fault Critical Point

Alkaran, Davood Solati and Vatani, Mohammad Reza and Sanjari, Mohammad Javad and Gharehpetian, Gevork B. and Mohammed Yatim, Abdul Halim and Alkaran, Davood Solati (2015) Overcurrent Relays Coordination in Interconnected Networks Using Accurate Analytical Method and Based on Determination of Fault Critical Point. Ieee Transactions On Power Delivery, 30 (2). pp. 870-877. ISSN 8858-977

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Official URL: http://dx.doi.org/10.1109/TPWRD.2014.2330767

Abstract

Overcurrent relays should be coordinated for different operation conditions in interconnected networks. In addition, the time interval should not reach under the predefined threshold for each pair of primary and backup relays for the faults occurring in the protection zone of the primary relay. An analytical approach is presented in this paper to calculate the impedance matrix of the network in fault condition in order to determine the critical fault point accurately. Overcurrent relays are coordinated by using the presented critical fault point instead of the close-in fault used in previous studies. Simulation results show the accuracy of the proposed method for overcurrent relays coordination in comparison with other methods.

Item Type:Article
Uncontrolled Keywords:fault point, optimal coordination, overcurrent relays, primary and backup (P/B) relays, time interval
Subjects:A General Works
ID Code:58741
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:22 Feb 2017 14:23

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