Design and Validation of efficient Z source breaker with voltage stress reduction for DC Microgrid

Articles in Press

Document Type : Article

Authors

1 Research Scholar, School of Electrical Engineering, Vellore Institute of Technology, Chennai, India

2 School of Electrical Engineering, Vellore Institute of Technology, Chennai, India

Abstract

The integration of renewable energy generation in grid results in reduced carbon emissions in the atmosphere. Despite technical advancements, critical issues oriented to protection strategies for renewable integration in microgrid structures still remain unresolved. Foremost aspects that need to be concentrated while securing the grid includes rapid fault interruption, auto reclosing prohibition and stress on the switching devices. This paper improves the fault isolation speed and voltage stress reduction by redesigning the inductance and capacitance value of Z-source DC circuit breaker. This strategical breaker is applied and tested for various types of faults in a 7-bus microgrid system, where its efficacy in interrupting the fault in existing with proposed proves less voltage stress and fast fault interruption. In addition, the proposed LC tuned breaker is tested with adaptive algorithm for auto tripping and fast reclosing in smart microgrid environment. The experimentation of the suggested work is carried out in Opal RT control hardware in loop (CHIL) testing.

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Scientia Iranica

Articles in Press, Accepted Manuscript
Available Online from 12 May 2024

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