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nicrajkumar
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Join Date: Jun 2011
Location: Gurgaon, Haryana, India
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DC Battery Sizing

10/19/2011 12:30 AM

I am sizing a DC battery bank for my hydro project of 6x200 MW capacity. should i directly multiply my loads(I) with time(t) to get AH capacity of battery or do i need to adopt some other method. If so, then please inform me.

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Tornado
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#1

Re: DC battery sizing

10/19/2011 1:40 AM

This project is dead on arrival. Battery storage is totally stupid for this much capacity.

(Ignoring 1-phase vs 3-phase, as well as various losses, battery AH = Wt/V; where V is battery voltage, W is load in watts, and t is hours.)

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russ123
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#2
In reply to #1

Re: DC battery sizing

10/19/2011 1:57 AM

Right - 1.2 gW is a fantastic amount of power - sounds like a school assignment to me.
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Doorman
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#10
In reply to #2

Re: DC battery sizing

10/19/2011 10:38 AM

One point twenty one gigawatts? One point twenty one gigawatts? Great Scott!

Maybe he's going Back to the Future.

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#11
In reply to #10

Re: DC battery sizing

10/19/2011 11:02 AM

If that's the case, he's going to need a "flux capacitor", not batteries

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kvsubramanyam
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#5
In reply to #1

Re: DC battery sizing

10/19/2011 5:48 AM

GA. Only through dams power in the range of Megawatts can be stored; not by any other mean. But when you have already stored energy in the form "Hydro" why again to store?

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nicrajkumar
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#7
In reply to #1

Re: DC battery sizing

10/19/2011 6:14 AM

actually sir this is our company project. Provide me some information if u have got regarding this subject

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russ123
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#9
In reply to #7

Re: DC battery sizing

10/19/2011 10:26 AM

If you are talking about emergency backup power for your control system then you might say so.
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electricalexpert65
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#3

Re: DC battery sizing

10/19/2011 4:43 AM

If you can mail me your mail ID thro this forum's mailbox, I can send you some battery sizing calculations that we have done for a 2 x 500MW Thermal Power Plant
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russ123
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#4
In reply to #3

Re: DC battery sizing

10/19/2011 5:14 AM

Right - how much storage did you consider?
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kvsubramanyam
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#6
In reply to #3

Re: DC battery sizing

10/19/2011 5:50 AM

Also you can download free from our company web site: http://hbl.in

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A.A.Khi
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#8

Re: DC Battery Sizing

10/19/2011 10:10 AM

For a power plant of 6x200 MW capacity you will need Essential and Emergency power supplies as follows:

(a)Power supplies for the protection, emergency shut down and switchgear operation rated usually at 110 volts DC.

(b) 220 V Single phase essential power for the anti-condensation heaters, essential lighting and for battery chargers.

(c) 48 volts or 24 volts essential dc power supplies for DCS / SCADA and Communication (instrumentation).

  • Typical rating of 110 volts DC system for the high voltage substation is 30 to 50 kva.
  • Typical rating of 110 volts DC system for the 6x200 MW power house is 30 to 50 kva is separate from the substation.
  • For the essential loads 220 v AC usually a 500 KVA three phase diesel generator is installed and the single phase loads are evenly distributed.
  • 48v / 24 volt requirement is best left to the instrumentation department or should also be around 30 to 50 KVA.
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Users who posted comments:

A.A.Khi (1); Anonymous Poster (1); Doorman (1); electricalexpert65 (1); kvsubramanyam (2); nicrajkumar (1); russ123 (3); Tornado (1)

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