Authors :
Sani, Hannatu M.; Amoo, A. L.; Haruna, Y. S.
Volume/Issue :
Volume 8 - 2023, Issue 7 - July
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/bdktp2n9
DOI :
https://doi.org/10.5281/zenodo.8191828
Abstract :
Growing demand as a result of the present
trend in the world's energy crises is increasingly causing
the distribution system to take mesh appearance. As a
result, directional overcurrent relays (DOCRs) have
become widely used for network coordination, protection
and control in both distribution and transmission
networks. Efficient and reliable network operation and
control, requires optimal coordination of the DOCRs
such that the overall operational time is minimized.
However, the relay parameter settings must be carefully
and optimally chosen (for example, Time Dial settings is
bounded between 0.05s to 1s) such that any fault
occurrence can be cleared as fast as possible, while still
ensuring that void network topologies are avoided. As a
result, setting the DOCR parameters is a challenging
problem and attempt has been made through nonlinear
optimization schemes to resolve this problem but poor
convergence, misdetection, higher coordination time and
complexity of solution became serious limitation to the
effective operation of DOCR most especially when the
network becomes large and complex. A quick convergent
hybrid meta-heuristic optimization approach is
suggested. The standard Grey-wolf optimizer (GWO)
and Harris-hawk optimizer (HHO) were both improved,
and a hybrid enhanced Grey-wolf Harris-hawk
optimizer (HEGWHHO) algorithm was created. The
effectiveness of the created HEGWHHO and its
derivatives—conventional GWO, conventional HHO,
hybrid GWO and HHO (HGWHHO), enhance GWO,
and enhanced HHO were examined and contrasted with
that of other pertinent algorithms in the literature.
Including the IEEE 8 and 30 Bus networks, three DOCR
coordination test systems, where utilized to test the
developed algorithm's performance. In terms of DOCR
setting optimization, all six algorithms that were taken
into consideration in this work were successful.lower than
the best performing methods in literature. Furthermore,
the overall order of decreasing performance of the six
algorithms investigated in this work have been found to
be HEGWHHO > HGWHHO > EGWO > EHHO >
GWO > HHO.
Keywords :
Directional Overcurrent Relay, Grey Wolf Optimizer, Harris Hawk Optimizer, Hybrid Enhanced Grey Wolf Harris Hawk Optimizer.
Growing demand as a result of the present
trend in the world's energy crises is increasingly causing
the distribution system to take mesh appearance. As a
result, directional overcurrent relays (DOCRs) have
become widely used for network coordination, protection
and control in both distribution and transmission
networks. Efficient and reliable network operation and
control, requires optimal coordination of the DOCRs
such that the overall operational time is minimized.
However, the relay parameter settings must be carefully
and optimally chosen (for example, Time Dial settings is
bounded between 0.05s to 1s) such that any fault
occurrence can be cleared as fast as possible, while still
ensuring that void network topologies are avoided. As a
result, setting the DOCR parameters is a challenging
problem and attempt has been made through nonlinear
optimization schemes to resolve this problem but poor
convergence, misdetection, higher coordination time and
complexity of solution became serious limitation to the
effective operation of DOCR most especially when the
network becomes large and complex. A quick convergent
hybrid meta-heuristic optimization approach is
suggested. The standard Grey-wolf optimizer (GWO)
and Harris-hawk optimizer (HHO) were both improved,
and a hybrid enhanced Grey-wolf Harris-hawk
optimizer (HEGWHHO) algorithm was created. The
effectiveness of the created HEGWHHO and its
derivatives—conventional GWO, conventional HHO,
hybrid GWO and HHO (HGWHHO), enhance GWO,
and enhanced HHO were examined and contrasted with
that of other pertinent algorithms in the literature.
Including the IEEE 8 and 30 Bus networks, three DOCR
coordination test systems, where utilized to test the
developed algorithm's performance. In terms of DOCR
setting optimization, all six algorithms that were taken
into consideration in this work were successful.lower than
the best performing methods in literature. Furthermore,
the overall order of decreasing performance of the six
algorithms investigated in this work have been found to
be HEGWHHO > HGWHHO > EGWO > EHHO >
GWO > HHO.
Keywords :
Directional Overcurrent Relay, Grey Wolf Optimizer, Harris Hawk Optimizer, Hybrid Enhanced Grey Wolf Harris Hawk Optimizer.
