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OLAYIWOLA ABDULAKEEM
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Join Date: Jun 2012
Posts: 2

Grid Instaility

07/10/2012 11:24 AM

If a turbogenerator,rated speed 3000rpm,50Hz is tied to an unstable grid,fluctuating between 49-51Hz,What would happen to the Generator speed,Efficiency and Output MW at 49Hz and 51Hz respectively.
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RAMConsult
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Engineering Fields - Power Engineering - New Member

Join Date: May 2007
Location: NYC metropolitan area.
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#1

Re: Grid Instaility

07/10/2012 8:06 PM

I can't speak to the effect upon the prime mover's efficiency, but assuming that the generator rating is "small" relative to the unstable grid, the generator speed and frequency will follow the grid's frequency variations by +/- 2%. You might see the efficiency and output MW vary by a similar amount but that will depend upon the mix of inductive, resistive, and capacitive loads.

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leveles
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Join Date: Jan 2008
Posts: 1753
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#2

Re: Grid Instaility

07/11/2012 12:57 AM

What the heck you expect? The generator - only limited by its inertia - will follow the net. Any other question?
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Andy Germany
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Popular Science - Weaponology - New Member Safety - ESD - New Member Hobbies - Fishing - New Member

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#3

Re: Grid Instaility

07/11/2012 6:33 AM

This is a typical HOMEWORK question, with very little compability to the real world. Its a totally useless question.....

BUT, as its homework, you do need to do the work yourself and not to ask us....

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dhayanandhan
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Engineering Fields - Mechanical Engineering - New Member

Join Date: May 2008
Location: CHENNAI, TAMIL NADU, INDIA.
Posts: 1851
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#4

Re: Grid Instaility

04/08/2016 9:53 AM

Dear Mr.abdulakeem,

Once you synchronize your turbo-set, the Set speed is governed by the grid frequency, There will be a small variation of the equipment but it is insignificant.

DHAYANANDHAN.S
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Andy Germany (1); dhayanandhan (1); leveles (1); RAMConsult (1)

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