Fault Detection and Isolation Technique for Photovoltaic Based Low Voltage DC Microgrid

Fault Detection and Isolation Technique for Photovoltaic Based Low Voltage DC Microgrid
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© 2021 by IJETT Journal
Volume-69 Issue-12
Year of Publication : 2021
Authors : Prateem Pan, Rajib Kumar Mandal
DOI :  10.14445/22315381/IJETT-V69I12P227

How to Cite?

Prateem Pan, Rajib Kumar Mandal, "Fault Detection and Isolation Technique for Photovoltaic Based Low Voltage DC Microgrid," International Journal of Engineering Trends and Technology, vol. 69, no. 12, pp. 229-236, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I12P227

Abstract
This paper presents a method for the protection of a Low Voltage DC (LVDC) microgrid based on local measurements. Unlike AC microgrids, its DC counterparts encounter more protection challenges. Conventional AC protection schemes fail to address dc protection problems efficiently. This paper involves local measurement-based decisions taken by Intelligent Electronic Devices (IEDs). It initiates the trip signal based on apparent circuit resistance. Due to the absence of communication links, the method is fast and efficient for detecting and isolating faults. The simulation results show that the faulted section can be isolated within a few milliseconds. The method proves to be effective for varying fault resistance and fault location. The fault detection technique incorporates the evaluation of resistance seen by the Solid-State Circuit Breaker (SSCB) at its terminal. The efficacy of the proposed method is tested on an LVDC test system in the MATLAB/Simulink platform.

Keywords
Fault detection, Microgrid, Protection, Renewable energy sources, Short circuit faults.

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