Fault Detection and Localization in Hybrid Shipboard Electrical Power Grids Using Wavelet Transform
Subject Areas : electrical and computer engineering
Mohsen Aliyani
1
(Faculty of Electrical & Computer Engineering, Malek Ashtar University of Technology, Iran)
Arash Dehestani Kolagar
2
(Faculty of Electrical & Computer Engineering, Malek Ashtar University of Technology, Iran)
Mohammad Reza Alizadeh Pahlavani
3
(دانشگاه صنعتی مالک اشتر)
Keywords: Fault detection and localization, hybrid shipboard microgrid, wavelet transform,
Abstract :
In the hybrid shipboard power networks, the possibility of occurrence of various types of faults is very high. According to the studies conducted in the field of fault detection and localization in hybrid microgrids, the lack of comprehensive fault management techniques to protect the microgrid against short-circuit faults is the main obstacle to the use of hybrid microgrids in vessels for vital marine missions. Considering the restrictions and limitations in marine vessels, the design of an electrical protection system for hybrid microgrids requires high attention to special requirements. In this paper, an appropriate protection scheme for fault detection and localization in hybrid shipboard microgrids is presented. In this regard, fault detection, classification and localization in a period of 0.034 to 0.54 seconds are performed using an algorithm based on Daubechies order 4 wavelet transform (db4). Observing the results and analyzing them shows that the proposed algorithm can detect, classify and localize all types of faults both in the AC and DC parts of the shipboard microgrids.
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