21-09-2008, 09:39 AM
Electrical load on power system varies and it never be constant. To economically meet the requirement of variable load and to assure continuous supply the number of generator unit connected to the system bus bar are varied suitably.
The synchronization requires fulfillment of various conditions like
(1) Same phase sequence
(2) Equality of frequency and voltage between incoming machine and bus.
At present the synchronization is done manually by using conventional analog instruments. The microprocessor based system of automatic synchronizer can be used more effectively compared to conventional methods of synchronization such as dark lamp method, bright lamp method and synchronization using synchronoscope this because of the fact that the conventional, method calls for of the operator and accuracy is less and it depends on the sense of correct judgment of the operator.
Moreover the microprocessor based alternator synchronizer is user friendly and requires less maintenance. It also exploits the advantage of superior performance of the microprocessor like accuracy speed and reliability..
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