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Anonymous Poster #1

Mechanical Engineer

09/30/2011 11:19 PM

:Please , anybody can help me about benefit of diesel generator synchronizing

Why synchronization is good when using 2 or more diesel generator?

Thanks
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JWthetech
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#1

Re: Mechanical Engineer

09/30/2011 11:33 PM

In general the goal is to keep the smoke inside the generator, if (when) you let the smoke out, bad things happen. Depending on the size of the generators and their loads, very bad "tings hoppen mon".

Synchronizing keeps the smoke inside.

There are three steps, Frequency (speed of prime movers) Voltage (should be equal) and lastly in phase (peaks and valleys of voltage) should match. All these together and good "tings hoppen".

If you have the right equipment and a good teacher you can master it in a few hours. However a qualified person (electrician etc) should be available for emergencies.
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Tobugrynbak
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#2

Re: Mechanical Engineer

10/01/2011 12:23 AM

I hate it when " bad tings hoppen mon"....

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Anonymous Poster #1
#3

Re: Mechanical Engineer

10/01/2011 12:44 AM

yes, I've 3 generators same frequency, voltage and phase. So what the advantage I have?
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Far
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#13
In reply to #3

Re: Mechanical Engineer

10/02/2011 1:56 PM

I asume your 3 generators are running separately supplying their dedicated loads at this time and someone has suggested savings are available if you synchronize them on a common bus.

The advantage is a more stable and secure power supply because load fluctuations will be taken up by all the sets and if the total load can be carried by one or two of the sets, the other(s) can be shut down for maintenance, etc. You will also be able to use any set to supply any load instead of only their dedicated load. You can do maintenance on one load while using its dedicated generator to supply other loads.

But if your system is not currently equipped with the necessary instrumentation you will not be able to interconnect them.

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dj95401
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#4

Re: Mechanical Engineer

10/01/2011 2:14 AM

IF, you do not know, then you should not tinker with them, a very bad Genie comes out with the smoke

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#5

Re: Mechanical Engineer

10/01/2011 2:41 AM

If the generators are unsychronized, there will be times when their outputs cancel, producing zero; and other times when their outputs add, producing up to twice as much as desired. And other weird stuff, such as alternatively driving each other in reverse.

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JRaef
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#6

Re: Mechanical Engineer

10/01/2011 11:35 AM

Mechanical Eng: "Why synchronization is good when using 2 or more diesel generator?"

Anonymous #1 "yes, I've 3 generators same frequency, voltage and phase. So what the advantage I have?"

Despite the light hearted (but accurate) responses, I hope you two are getting the correct message. There is no "benefit" or "advantage" in that synchronization of multiple generators on a common distribution system is an ABSOLUTE NECESSITY, not an issue of benefits and advantages over disadvantages. The result of NOT synchronizing them is essentially the loss of the ENTIRE system.

It is possible however that one can have 2 or 3 generators on a site, and each one has its own COMPLETELY SEPARATE distribution system. In that case there is no need (advantage, benefit) to synchronizing them, as long as no one EVER EVER EVER connects two unsynchronized systems together.

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TonyS
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#7

Re: Mechanical Engineer

10/01/2011 5:28 PM

Very very bad tings hoppen mon

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dj95401
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#8

Re: Mechanical Engineer

10/01/2011 6:20 PM

If you look real close, you can see the Genie's body in the center, as she exits her bottle!

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Priyadarshan
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#9

Re: Mechanical Engineer

10/02/2011 3:02 AM

I think by synchronization you mean the parallel operation of the generators.When you have two or more generating sets, the best utilization of the available capacity is possible only by operating these generators in parallel. When you connect them in parallel, they are connected to the same bus bars(i.e. the same distribution network). This necessitates that both generators must work in synchronizm.
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suresh sharma
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#10

Re: Mechanical Engineer

10/02/2011 3:33 AM

Mr.Tarik,

Please try to find answers yourself on Googles or Wikipedia instead of simply posting in CR4 forum.If you fail to get answer then you may post your questions. No body will be interested in spoon feeding.

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brich
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#11
In reply to #10

Re: Mechanical Engineer

10/02/2011 5:07 AM

GA....

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cuba_pete
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#14
In reply to #10

Re: Mechanical Engineer

10/04/2011 10:26 AM

JWTtech, raef, tornado and JRaef are interested in spoon feeding...that negates your "nobody"

A lot of times googling around brings users to CR4...then they just get sucked into the knowledge vortex. Sometimes it's much nicer to get a response from a warm body than the old cold facts laying around the internet.
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KalbBR
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#12

Re: Mechanical Engineer

10/02/2011 10:18 AM

Two or more gensets are syncronized when we need sum the power of them on the same busbar. Example, some facilities has one 1000kW genset, others prefere to have two 500kW. The arguments to decide are:

1-investment considering local prices

2-operational and maitenance costs

3-may the facility does not need all 1000kW all the time, if only one is used a lot of fuel $ are saved.

4-consider the maintenance procedures and confidence, with 2 machines if one fails you stil have half power.

5-Lay-out

6-One central power house or distributed generation close to consumers?

7-many, many others question.

Hope have help you.

PS. I saw a 36 x 1500kW diesel genset conected to the grid working in Manaus.
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Users who posted comments:

Anonymous Poster (1); brich (1); cuba_pete (1); dj95401 (2); Far (1); JRaef (1); JWthetech (1); KalbBR (1); Priyadarshan (1); suresh sharma (1); Tobugrynbak (1); TonyS (1); Tornado (1)

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