Sensitivity and Stability of GPS Synchronised Differential Protection
Nicholas Villamagna
Broschiertes Buch

Sensitivity and Stability of GPS Synchronised Differential Protection

Differential Protection

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Current differential relays are now widely used for the protection of transmission lines. Simplicity of operation and the ability to clearly discriminate internal and external faults ensures their popularity, particulary when digital communication systems are available. Increasing availability of digital communication systems creates tremendous opportunities for protection but recent move to switched hierarchical communication networks has created problems for phasor synchronisation. The solution is GPS. GPS provides time synchronisation to an accuracy of +/- 1.0 microsecond. Although the phas...