In parallel operation two different circuits are connected together called synchronized. A mismatch circuit if get sysnchronized, there will be flushing and other disaster incident.
The function of a synchronizer relay is to control the total synchronization procedure of alternators or different power circuits. We know that for synchronization the voltage, phase angle and frequency must be matched for two power circuits. Synchronizer relay watch over this parameters and when the condition fulfills, commands the close signal to circuit breaker to make to system synchronized.
How synchronizer relay works
An industrial synchronizer measures the busbar and generator voltages and frequencies and compares these, plus compares their phase angles. It controls the generator frequency and voltage, till they match the busbar values.
When the phase difference is within this tolerance, the synchronizer transmits a closing signal for the generator circuit breaker ñ allowing time for this to close.
01.Brief insight on synchronization of alternator or generator.
02.Brief insight on Synchronous Alternator theory & operation.
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