GPS (GLOBAL POSITIONING SYSTEM) AND ITS APPLICATION IN PROTECTION SCHEME

Anuashka Sharma¹, Aakanksha Girolkar², Ankit Shrivastava^3
1Department of Electrical Engineering, National Institute of Technology, Raipur, G.E. Road, Raipur, Chhatisgarh, 492010, India
²Department of Electrical Engineering, National Institute of Technology, Raipur, G.E. Road, Raipur, Chhatisgarh, 492010, India
³Department of Electrical Engineering, National Institute of Technology, Raipur, G.E. Road, Raipur, Chhatisgarh, 492010, India

Received : -     Accepted : -     Published : 15-06-2010
Volume : 1     Issue : 1       Pages : 6 - 8
Inform Sci Tech 1.1 (2010):6-8

Keywords : GPS, Fault detection, Transient analysis, Transient wave based protection scheme, fault current, signal processing
Conflict of Interest : None declared

This is a new technique for the protection of transmission systems by using Global Positioning Systems(GPS) and fault generated transients .In this scheme the relay contains a full transient detection system together with a communication unit which is connected to the power line through the high voltage coupling capacitor of the CVT(Capaitive Voltage Transformer). Relays are installed at each busbar in transmission network. These detect the fault generated high frequency voltage transient signal and record the time instant corresponding to when the initial travelling wave generated by the fault arises at the busbar. The decision to trip is based on the components as they propagate through the system.

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