also there are wattmeter method and lamp method
frequency synchronization method.
In an alternator synchronization experiment, the lights typically flicker or dim momentarily as the alternators are brought into phase with each other. Once synchronized, the lights stabilize and glow steadily, indicating that the voltage, frequency, and phase of the alternators are aligned. If the alternators are not in phase, the lights may show erratic behavior or flickering until synchronization is achieved. This visual feedback helps operators confirm successful synchronization.
Generally, synchronization refers to matching three parameters between an incoming Alternator and the existing busbar before connecting to the actual load. They are 1. Magnitude of voltage 2. Frequency 3. Phase sequence The voltage in the alterenator is matched by varying the excitation. The frequency is matched by varying the speed of the alternator by its prime-mover. The phase-sequence is matched by flipping any of the two phases if mis-matched. This can be achieved and ensured either by "Three dark lamps method" or using a synchonoscope.
voltage of incoming machine should be same as that of bus bar voltage
Synchronous
It is conducting OC and SC tests on the given three phase alternator and determining the regulation by synchronous impedance method.
because the voltage should be constant as the full transmission grid need ame voltage for synchronization of alternatos of grid
Synchronization is the process of coordinating multiple threads or processes to ensure they access shared resources in a safe and orderly manner. This helps prevent conflicts and race conditions that can lead to unpredictable behavior or data corruption. Common synchronization methods include locks, semaphores, and barriers.
The purpose of synchronization is to coordinate the execution of multiple threads or processes to ensure they access shared resources properly and avoid conflicts like race conditions. It helps maintain data integrity by enforcing proper order of operations and preventing inconsistencies in parallel execution.
Transactional Synchronization Extensions was created in 2012.
Aircraft alternators have an electronic voltage regulator.
When input to generator increased when it is synchronised, speed of alternator get disturbed which inturn leads to the change in frequency,when frequency gets change synchronization is no long.