Paper Info
Title
Localized Protection Of Radial Dc Microgrids With High Penetration Of Constant Power Loads
Abstract
This article proposes a localized protection scheme for dc microgrids with radial configuration under the impact of constant power loads (CPLs) to determine the location of faults accurately. The proposed fault location scheme is primarily designed for fault location of CPLs in dc microgrids. First, a local protection relay for CPL is designed based on the transient behavior of the current and voltage in the main distribution line. Then, the estimation of the fault resistance is formulated based on the power sharing in the system to improve the accuracy of the protection system. To realize a robust protection scheme considering the variation of fault resistance, a fault resistance estimation procedure is employed to design a system that locates both low- and high-impedance faults. Finally, the effectiveness of the proposed strategy is evaluated based on offline digital time-domain simulations in Digsilent PowerFactory software environment and experimentally verified by implementing on a laboratory scale hardware setup. The obtained simulation and experimental test results, and comparison with other methods prove that the proposed scheme is immune against these disturbances and can efficiently and reliably estimate the location and resistance of faults with high accuracy and acceptable error margin.
Year
DOI
Venue
2021
10.1109/JSYST.2020.2998059
IEEE SYSTEMS JOURNAL
Keywords
DocType
Volume
Microgrids, Fault location, Resistance, Relays, Transient analysis, Circuit faults, Constant power loads (CPL), dc microgrid, fault detection, fault location, protection
Journal
15
Issue
ISSN
Citations 
3
1932-8184
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Navid Bayati100.34
Hamid Reza Baghaee200.68
Amin Hajizadeh386.62
Mohsen Soltani42811.77