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synchronization
It is the process to connect electric generator with the electric network without any fault causes generator short circuit .That can be done by three conditions :
1. Vgenerator = Vnetwork
2. phase sequence of generator = phase sequence of network
3. frequency of generator = frequency of network
synchronization is the process of matching the speed and frequency of a generator or other source to a running network.
There are five conditions that must be met before the synchronization process takes place. The source (generator or sub-network) must have equal line voltage, frequency, phase sequence, phase angle, and waveform to that of the system to which it is being synchronized