Authors :
Manoj S; Bharath Channaveerayya Hiremath; Ashmitha Ravishankar Harahally; Sangeeta Modi
Volume/Issue :
Volume 8 - 2023, Issue 5 - May
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/36tup8fz
DOI :
https://doi.org/10.5281/zenodo.8049846
Abstract :
The reliability and security are major aspects
of a power system. However, the fast development in
electrical systems makes the protection more complicated
and difficult to achieve the desired objective. These relays
have many advantagessuch as fast operation. The use of
relay protection enhances the reliability and security of
the electrical systems. In this paper,an overcurrent relay
is modeled using MATLAB/SIMULINK. The overcurrent
relay was chosen as it is widely used in fault detection and
clearance of power systems and grids. A relay by definition
is an electromechanical switch which is used to sense faults
in transmission lines and once the fault is detected, sends a
signal to trip the circuit breaker. The overcurrent relay in
specific operates when the load current goes beyond the
pick-up current value. This paper discusses two
important types of protections for overcurrent in the
power system, i.e., primary protection and backup
protection. For primary protection, every line is provided
with an overcurrent relay that trips the circuit breaker
when the fault occurs as opposed to backup protection
where one relay is given for multiple lines which operates
with a definite time delay in absence of the primary
protection.
Keywords :
Overcurrent Relay, Circuit Breaker, Trip, Fault, Primary, Backup.
The reliability and security are major aspects
of a power system. However, the fast development in
electrical systems makes the protection more complicated
and difficult to achieve the desired objective. These relays
have many advantagessuch as fast operation. The use of
relay protection enhances the reliability and security of
the electrical systems. In this paper,an overcurrent relay
is modeled using MATLAB/SIMULINK. The overcurrent
relay was chosen as it is widely used in fault detection and
clearance of power systems and grids. A relay by definition
is an electromechanical switch which is used to sense faults
in transmission lines and once the fault is detected, sends a
signal to trip the circuit breaker. The overcurrent relay in
specific operates when the load current goes beyond the
pick-up current value. This paper discusses two
important types of protections for overcurrent in the
power system, i.e., primary protection and backup
protection. For primary protection, every line is provided
with an overcurrent relay that trips the circuit breaker
when the fault occurs as opposed to backup protection
where one relay is given for multiple lines which operates
with a definite time delay in absence of the primary
protection.
Keywords :
Overcurrent Relay, Circuit Breaker, Trip, Fault, Primary, Backup.
