Extracting the Phase of Fault Currents: A New Approach for Identifying Arc Flash Faults

• Published in: IEEE transactions on industry applications Vol. 52; no. 2; pp. 1226 - 1240
• Main Authors: Saleh, S. A., Aljankawey, A. S., Errouissi, R., Castillo-Guerra, Eduardo
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Arch flash faults; Arches; Ash; Circuit faults; dielectric barrier discharge; Fault currents; Faults; Filter banks; Finite impulse response filters; Frequency modulation; Information dissemination; Mathematical analysis; modulated digital filters; power system modeling; power system protection; Protective clothing; Signatures; Simulation; Supplying; Transient analysis; power system protection; dielectric barrier discharge; modulated digital filters; Arch flash faults; power system modeling
• ISSN: 0093-9994; 1939-9367
• DOI: 10.1109/TIA.2015.2483698

This paper proposes a new approach for detecting and identifying arc flash faults in power systems. The proposed approach is structured to extract the phases of transient frequency components present in arc flash fault currents. The desired phases can be extracted by processing fault currents using a modulated filter bank that is composed of high-pass finite impulse response (FIR) filters. These filters are designed by using the Kaiser window method to achieve linear phase responses. Extracting the phases of transient frequency components, present in arc flash fault currents, can provide signature information for accurate and fast detection and distinguish of an arc flash fault. The proposed phase-based approach is implemented for off-line testing to evaluate its performance. Test cases of parallel and series arch flash faults are conducted for supplying linear, nonlinear, and dynamic loads. Simulation and off-line results demonstrate the validity, accuracy, speed, and reliability of the phase-based approach to detect and distinguish arc flash faults with minor sensitivities to the load type and arch flash type.