Investigation of Resonance and Ferroresonance Overvoltages due to Cable-Transformer Interactions | ||||
| ERJ. Engineering Research Journal | ||||
| Article 1, Volume 43, Issue 4, October 2020, Page 261-271 PDF (1.53 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2020.112769 | ||||
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| Authors | ||||
Alyaa A. I. Nassar1; Abdel-Maksoud I. Taalab2; Mohamed A. Izzularab1; Nagy I. Elkalashy   3
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| 1Electrical Engineering Menoufia University | ||||
| 2Electrical Engineering Department, Menoufia University | ||||
| 3Electrical Engineering Department, Faculty of Engineering, Menoufia University | ||||
| Abstract | ||||
| In this paper, the resonance and ferroresonance phenomena are deeply investigated considering two different cable-transformer power systems. The internal transformer resonance overvoltage case is initiated due to a single-phase earth fault, while the studied ferroresonance case is due to a single-phase switching in the source feeding an unloaded transformer via a power cable. The resulted secondary overvoltage and the core flux signatures are used as a classifier, where the transient features are extracted using three algorithms. Although the voltage frequency spectrum and phase-plane diagrams have been previously utilized for the ferroresonance mode evaluation, they are exploited in this paper for the comparison study and accordingly for the detection of resonance and ferroresonance phenomena. Salient features found in the transients extracted using the well-known DWT are used as inputs of the third algorithm. A new detection approach is attained based on the DWT-based transient feature extraction of resonance and ferroresonance overvoltages. | ||||
| Keywords | ||||
| Resonance and ferroresonance overvoltages; Cable-Transformer interaction; Phase-Plane diagram; DWT | ||||
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