Low-cost communication-assisted line protection for multi-inverter based microgrids
File(s)
Accepted version
Author(s)
Nsengiyaremye, Jerome
Pal, Bikash C
Begovic, Miroslav M
Type
Journal Article
Abstract
Multi-inverter microgrid systems, particularly those with loop topology, offer higher power supply reliability and robustness compared to conventional radial distribution systems. In meshed systems, communication-less protection schemes have proved to be ineffective for multi-inverter microgrids due to bidirectional power flow, and limited and controlled fault currents generated by the voltage source converters interfacing the energy source to the network. This makes communicationassisted line protection schemes preferable for such systems despite the necessity for communication means. While these protection schemes are effective, their reliability depends much on the communication availability. This requires a back-up communication path in case the main one fails bringing up the cost issue that hinders their uptake. This paper proposes a novel and low-cost line protection based on directional blocking strategy that can operate as a main as well as a back-up protection to any protection scheme using communication means between the line terminals. As the main, it requires low-bandwidth communication system. As a back-up, it would share the same communication means with the main one and use those of the healthy lines when the faulted lines fails. Thus saving the cost of back-up communication system.
Date Issued
2021-12-01
Date Acceptance
2020-11-15
Citation
IEEE Transactions on Power Delivery, 2021, 36 (6), pp.3371-3382
ISSN
0885-8977
Publisher
Institute of Electrical and Electronics Engineers
Start Page
3371
End Page
3382
Journal / Book Title
IEEE Transactions on Power Delivery
Volume
36
Issue
6
Copyright Statement
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Subjects
Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
Relays
Microgrids
Inverters
Discrete Fourier transforms
Frequency estimation
Steady-state
Communication channels
Microgrid
inverter-interfaced distributed energy resource
protection
communication
Back-up
RESILIENCE
Energy
0906 Electrical and Electronic Engineering
Publication Status
Published
Date Publish Online
2020-11-18