A busbar is a metallic bar in a switchgear panel used to carry electric power from incoming feeders and distributes to the outgoing feeders. Simply, busbar is an electrical junction where incoming and outgoing currents exchange.
Busbar protection is primarily concerned with the removal of busbar faults in less time with the object of maintaining system stability and limitation of consequential damage.
Busbar Protections are
a. Differential Protection
High Impedance
Low Impedance
b. Reverse Interlocking
c. Stuck Protection