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Tags: Microprocessor, Based, Alternator, Synchronisation,
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21-09-2008, 09:39 AM
Post: #1
Microprocessor Based Alternator Synchronisation
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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19-01-2009, 12:21 AM
Post: #2
RE: Microprocessor Based Alternator Synchronisation
hi .. can u provide more info abt this topic
20-01-2009, 07:47 AM
Post: #3
Video RE: Microprocessor Based Alternator Synchronisation
Please read this links
Advantages Of Microprocessor Based Alternator Synchronisation

? Anticipatory close signal provides smooth synchronizing with minimum
system impact.
? Patented real-time adaptive proportional speed control algorithm provides
fast, reliable frequency matching while eliminating overshoots and
hunting. Includes smart target pulse to prevent hung scope condition.
(Patent #5,761,073)
? Highly flexible design can be configured for optimum performance over
a wide range of system characteristics from sensitive, asymmetrical low
inertia to high inertia hydro systems.
? One unit can control multiple systems with up to six different sets of
breaker closing parameters.
? Test module facilitates testing via front panel terminals.
? Standard 19 inch rack-mounted case with front cover.

Read this Papers carefully,Which Help you to Make A report

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04-09-2009, 02:04 PM
Post: #4
RE: Microprocessor Based Alternator Synchronisation
08-09-2009, 01:24 PM
Post: #5
RE: Microprocessor Based Alternator Synchronisation
read this bit
Modern microprocessor relays have the ability to look at closing rate and inhibit the
breaker closing if the rate is too fast. IOW, if the generators are at different
speeds and the phases are rotating past each other. They also have time delays,
anticipation capabilities and even the ability to generate a rate signal to go to the
governor. allows completely automatic syncing, no operator involved.

For small machines only the simplest relay would be
necessary. The relay would simply close the paralleling contactor
when the phase difference was within the window.

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