Power Number- Explanation needed
Power Number- Explanation needed
(OP)
Dear all, I am working with a Power System Operation group in India. Can someone please explain what is meant by Power Number in a Power System and how to calculate it for interconnected Power Systems? I just know that on a thumb rule Power Number is approx. 10% of the capacity of the Power System.






RE: Power Number- Explanation needed
If you want to find out (without getting caught asking a dumb question), the next time someone mentions "Power Number", ask them whether they use the IEEE or IEC definition and specifically which standard they use to determine it.
RE: Power Number- Explanation needed
might be very true. I have also heard of it 1st time evr I joined this company!! Nywys ppl say "Power Number" is the quantum of Active Power Change (in MW) that causes a variation of frequency of 1Hz. Now maybe u could explain how to determine that in Power Systems.
RE: Power Number- Explanation needed
That sounds sort of like droop to me. But the droop percentage refers to speed regulation between no load and full load. Perhaps its a different way of referring to the same thing: If the regulation is set to a 1 Hz speed change for a 10% load change, that would be the same as a 10 Hz change between no load and full load. At 50 Hz, that's 20% droop (pretty high).
RE: Power Number- Explanation needed
RE: Power Number- Explanation needed