Recent developments and challenges on AC microgrids fault detection and protection systems–a review

N Hussain, M Nasir, JC Vasquez, JM Guerrero - Energies, 2020 - mdpi.com
The protection of AC microgrids (MGs) is an issue of paramount importance to ensure their
reliable and safe operation. Designing reliable protection mechanism, however, is not a …

Power system protection with digital overcurrent relays: A review of non-standard characteristics

HC Kiliçkiran, İ Şengör, H Akdemir, B Kekezoğlu… - Electric Power Systems …, 2018 - Elsevier
Power systems are experiencing structural changes induced by the integration of distributed
generation units and the operation of microgrids. This transformation has posed new …

Adaptive protection coordination scheme using numerical directional overcurrent relays

MN Alam - IEEE Transactions on Industrial Informatics, 2018 - ieeexplore.ieee.org
Dynamically changing distribution system operating conditions compromises the
coordination of the existing protection schemes. This paper proposes an online adaptive …

Optimal coordination of directional overcurrent relays in complex distribution networks using sine cosine algorithm

K Sarwagya, PK Nayak, S Ranjan - Electric Power Systems Research, 2020 - Elsevier
The modern power distribution networks are very complex due to the growing integration of
distributed generators in recent years. Optimal coordination of directional overcurrent relays …

Coordination of dual setting overcurrent relays in microgrid with optimally determined relay characteristics for dual operating modes

R Tiwari, RK Singh… - Protection and Control of …, 2022 - ieeexplore.ieee.org
Fault current magnitude in a microgrid depends upon its mode of operation, namely, grid-
connected mode or islanded mode. Depending on the type of fault in a given mode …

MOPSO/FDMT‐based Pareto‐optimal solution for coordination of overcurrent relays in interconnected networks and multi‐DER microgrids

HR Baghaee, M Mirsalim… - IET generation …, 2018 - Wiley Online Library
The minimisation of discrimination time between main and backup overcurrent (OC) relays is
one of the most important issues in power system relays coordination. On account of the …

Innovative Adaptive Protection Approach to Maximize the Security and Performance of Phase/Earth Overcurrent Relay for Microgrid Considering Earth Fault Scenarios …

N El-Naily, SM Saad, A Elhaffar, E Zarour… - Electric Power Systems …, 2022 - Elsevier
Microgrids are increasingly paying attention to the emerging of distributed energy resources.
However, microgrid protection has challenged engineers because of the varying nature of …

Adaptive fuzzy directional bat algorithm for the optimal coordination of protection systems based on directional overcurrent relays

FC Sampaio, FL Tofoli, LS Melo, GC Barroso… - Electric Power Systems …, 2022 - Elsevier
Despite bringing several benefits to modern power systems, distributed generation (DG) and
microgrids cause a significant impact on the operation of power distribution networks …

Overcurrent protection of AC microgrids using mixed characteristic curves of relays

MN Alam - Computers & Electrical Engineering, 2019 - Elsevier
Protection of AC microgrids with islanded and grid-connected modes of operation is a major
challenge as fault currents change drastically in the transition from one mode to the other. In …

Mitigation of DGs impact on variable-topology meshed network protection system by optimal fault current limiters considering overcurrent relay coordination

A Elmitwally, MS Kandil, E Gouda, A Amer - Electric Power Systems …, 2020 - Elsevier
In this paper, the optimal deployment of fault current limiters (FCLs) in a variable-topology
distribution network with distributed generators (DGs) is analyzed. FCLs are used to mitigate …