Practical Test of Synchronization Relay

Numerical relays have such functions as protection, control, measurement, recording and communication and Have to work appropriately compliant with the specifications and operating conditions of the dynamic power system. When relays malfunction, severe damage to the power system equipment may result in loss of power system reliability. To avoid such complications, relays require various tests during development, commissioning, maintenance, configuration and troubleshooting. In This paper addresses the operation of the synchronization relay, which is generally used to interconnect two zones of the power system together. In addition, a practical test of the synchronization relay is performed. These tests include performance tests and testing of amplitude, phase, and frequency thresholds in synchrocheck, Synchron, and Async modes, as well as function tests in the dead-live, live-dead and dead-dead conditions.