CONTROLLER BASED LINE PROTECTION USING AUTO RE-CLOSING SCHEME

Abstract

Almost 70-80% of faults in transmission lines in power system are transient or temporary. These faults
lead to substantial damage to the power system equipment. These faults might be L-G, L-L, L-L-L in power system. To
overcome this problem a system is built, which can sense these faults and automatically disconnects the supply. Our
project is to develop an automatic tripping mechanism for three phase supply system. The Project output resets
automatically after interruption because of temporary fault while it remains in tripped condition in case of the permanent
fault. So, Consumers will get continuous supply. This method is simple and requires less hardware. Therefore,
application of this method is highly recommended in transmission line.