permissive over reaching transfer trip

Basics of Pilot Relaying & Application Considerations For Transmission Line Protection

Pilot relaying refers to the communication network implemented on the high voltage transmission line (T-line) to transmit “trip or don’t trip” signal to and fro between two or more substations. The intent here is to trip the circuit breakers as fast as possible when a fault strikes the T-line, therefore, protecting it.

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Wave Trap with Corona Fittings
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