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Anonymous Poster #1

Power Generation

08/22/2012 11:05 AM

Sir,

If Possible to generate more power than the rated power by changing the P.F from 0.8 to 0.9 ,and also let me know what problem will be happen?
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PWSlack
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#1

Re: Power generation

08/22/2012 11:08 AM

No.

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cuba_pete
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#2

Re: Power Generation

08/22/2012 11:19 AM

Improve the power factor and improve efficiency...don't exceed equipment specifications, that's going the wrong way.
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Bibo92004
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#3

Re: Power Generation

08/22/2012 12:27 PM

Even if you could, usually generator prime mover's output power has a max limit which is not necessarily the maximum power at 1 PF, it depends on the prime mover design.. So I urge you study about generator's capability curve to understand it..

Takecare
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Codemaster
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#4
In reply to #3

Re: Power Generation

08/22/2012 12:46 PM

I was about to reply but changed my mind. I can't see how to cancel the post.

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SolarEagle
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#7
In reply to #4

Re: Power Generation

08/22/2012 11:07 PM

Just don't hit the submit button....click on home or specific thread or back button....the post, in what ever form, will magically disappear, or more specifically, never have existed...

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Codemaster
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#14
In reply to #7

Re: Power Generation

08/23/2012 2:18 PM

Thanks, but I'd already hit Submit before realising my post was wrong. Then you get 15 mins to edit it, but I couldn't see a way to get rid altogether. If there is a way pls advise.

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Doorman
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#11
In reply to #4

Re: Power Generation

08/23/2012 10:09 AM

Hi Codey.

There doesn't seem to be a way to delete an entire comment after you have hit the 'Submit' button. You do have the fifteen minute opportunity to edit, as you have done here. Effective enough, and (for me anyway) sometimes a deleted comment is more cogent than anything I would have said anyway.

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K_Fry
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#12
In reply to #11

Re: Power Generation

08/23/2012 11:21 AM

This space intentionally left blank. I have deleted this comment because it was completely inane. Even the emoticons were all wrong.

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K_Fry
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#5

Re: Power Generation

08/22/2012 12:59 PM

No. Read this.

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wareagle
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#6

Re: Power Generation

08/22/2012 1:35 PM

Assume the generator is rated at 2 KVA

apparent power(KVA)2 = KW2 + KVAR2 PF = 0.80

assume KVA = 2 then KW = 1.60 and KVAR = 1.20

If you improve the PF to 0.90 then you would have

KVA = 1.78 KW = 1.60 and KVAR = 0.78.

So you have reduced the KVA. You can not reduce the required KW unless you reduce the load. Your generator can now produce more KVA but not more than the rated capacity.
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crm
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#8

Re: Power Generation

08/22/2012 11:16 PM

you would distroy the engine by changing PF 0.8to0.9 Slowly your alternator will accept it But engine Not as all diesel engines for power generation are manafactured to operate at 0.8 PF Only as per ISO Standards

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cuba_pete
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#9
In reply to #8

Re: Power Generation

08/23/2012 1:56 AM

Not always. Our genset delivers 1000 kW at .98. We're cool like that.
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harry potter
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#10

Re: Power Generation

08/23/2012 9:52 AM

YES

you can get more power from alternator by improving pf, but limitations are that engine KW rating should accommodate the same increase. ( Alternator are rated for 0.8 pf, increasing from 0.8 to 0.9 is preferable. But, further increase in pf may some times lead to leading pf, causing instability & some times, reverse power with alternator winding faults...

Of course, efficiency improves from pf of 0.8 to pf of 0.9.

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dhayanandhan
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#13

Re: Power Generation

08/23/2012 1:25 PM

Dear Friend,

The answer is NO. The improvement in Power Factor from 0.8 to 0.9, will improve the over-all efficency, You should never over load the equipment.

DHAYANANDHAN.S
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Users who posted comments:

Bibo92004 (1); Codemaster (2); crm (1); cuba_pete (2); dhayanandhan (1); Doorman (1); harry potter (1); K_Fry (2); PWSlack (1); SolarEagle (1); wareagle (1)

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