High Impedance Fault Detection in Real-Time and Evaluation Using Hardware-In-Loop Testing

Conference paper (2018)

Authors

R. Bhandia Intelligent Electrical Power Grids - EEMCS
Jose de Jesus Chavez Intelligent Electrical Power Grids - EEMCS
M. Cvetkovic Intelligent Electrical Power Grids - EEMCS
P. Palensky Intelligent Electrical Power Grids - EEMCS
Research Group
Intelligent Electrical Power Grids (EEMCS) (TU Delft)
Copyright: © 2018 R. Bhandia, Jose de Jesus Chavez, M. Cvetkovic, P. Palensky
DOI: https://doi.org/10.1109/IECON.2018.8591824
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Published Date

2018

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

Intelligent Electrical Power Grids

Abstract

High Impedance Fault (HIF) is a low fault current event which cannot always be efficiently detected or cleared by conventional protection systems. Voltage or current signal distortions are often a possible indicator of HIF signatures which need to be carefully analyzed. This paper proposes a new technique based on second-difference approach to detect signal distortions. The technique does not require large database and is computationally very lightweight. The performance of the proposed technique is compared against commercial protection relays connected in Hardware-in-Loop (HIL) mode to a Real Time Digital Simulator (RTDS) simulating HIF in an IEEE 9-bus system. Test result evaluation show that the proposed technique is accurate and dependable.

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