Increasing the penetration level of distributed generation (DG) may lead to improper
protection coordination. Previous work introduced a protection coordination index (PCI) that …

Faults on the transmission lines are primarily cleared by pilot wire differential protection as
well as from zone-1 and zone-2 of distance relays, depending upon their location on the …

Protection of transmission lines is essential to ensure a correct operation of power systems.
In this paper a pilot protection scheme, known as permissive overreaching transfer trip, is …

The aim of relay coordination is to obtain the optimal relay settings which result in minimum
operating times of the relays, satisfying selectivity constraints. In combined coordination of …

To achieve better protection, it is common to use both distance and overcurrent relays as
main and backup relays respectively, in power transmission protection scheme. In this …

The effective functioning and regulation of power systems crucially rely on the coordination
of distance and directional overcurrent relays. Accurate fault detection and successful …

Protection of power transmission has an important role in power systems. To have a better
protection it is common to combine difference types of relays, which combination of …

Optimal relay coordination has important effects on the stability, security, and reliability of a
network. Hence, in this article, a method for optimal coordination of distance (D) and …

Interval linear programming (ILP) is a powerful tool for modeling problems with uncertain
and bounded parameters. In real power systems, planned/unplanned events lead to …

With the integration of inverter based solar photovoltaic (PV) plant in the distribution system,
the fault current behaviour changes significantly which limits the application of overcurrent …