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Appl. Sci. 2018, 8(9), 1563;

Adaptive Impedance-Based Fault Location Algorithm for Active Distribution Networks

Electrical and Electronic Engineering Department, Universidad del Norte, Barranquilla 080001, Colombia
Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611-6130, USA
Department of Electrical Engineering, Universidad Tecnológica de Pereira, Pereira, Risaralda 660001, Colombia
Author to whom correspondence should be addressed.
Received: 9 August 2018 / Revised: 29 August 2018 / Accepted: 1 September 2018 / Published: 5 September 2018
(This article belongs to the Special Issue Active Distribution Network)
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Modern fault location methods are robust; however, they depend strongly on the availability of the measurements given by Distributed Energy Resources (DER). If the communication or synchronism of this information is lost, the fault location is not possible. This paper proposes an adaptive impedance-based fault location algorithm for active distribution systems. The proposal combines information provided by Intelligent Electronic Devices (IEDs) located at the substation, the knowledge of the network topology and parameters, as well as the distributed power sources, to estimate the fault location. Its adaptive feature is given by the use of a Distributed Energy Resources (DER) electrical model. This model is used to estimate the DER current contribution to the fault, in case the information provided by a local IED is not available. The method takes two types of DER technologies into account: Inverter non-interfaced DER (INIDER) and Inverter-interfaced DER (IIDER). The proposed method is validated on a modified IEEE 34-node test feeder, which was simulated with ATP/EMTP. The results obtained using the IEDs information, presented a maximum error of 0.8%. When this information is not available, the method’s performance decreases slightly, obtaining a maximum error of 1.1%. The proposed method showed better performance when compared with two state of the art methods, indicating potential use for real-life applications. View Full-Text
Keywords: impedance-based fault location; active distribution networks; distributed energy resources impedance-based fault location; active distribution networks; distributed energy resources

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Orozco-Henao, C.; Suman Bretas, A.; Marín-Quintero, J.; Herrera-Orozco, A.; Pulgarín-Rivera, J.D.; Velez, J.C. Adaptive Impedance-Based Fault Location Algorithm for Active Distribution Networks. Appl. Sci. 2018, 8, 1563.

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