The worldwide electric power infrastructure is an interconnection of power generation, transmission and distribution systems commonly known as the power grid. In order to improve the overall reliability, utilization and efficiency; communication and additional sensors are being added making the power grid smarter referred commonly as smart grid.
A substation is a key component of the smart grid infrastructure, located along power transmission and distribution including low-voltage feeders serving residences and businesses. Substations transform voltage levels for transmission and perform important functions such as feeder switching, protection of load switches and breakers and continuous monitoring of assets to increase utilization, efficiency and reduce downtime.
One of the key end equipment used in grid is the multifunction protection relay. A multifunction protection relay implements protect and control functionalities and can be configured to protect generators, transmission lines, motors, BUSBAR, or other grid equipment’s.