Presumably it is specified as a PV bus, which means that you are asking the
power flow program to solve for the reactive power required to maintain the
specified voltage magnitude.
Ray
--
Ray Zimmerman
Senior Research Associate
B30 Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
On Feb 13, 2014, at 5:36 PM, Mahmoud Abdallah <[email protected]>
wrote:
> dear sir
>
> I use case 39 which has wind at bus 37
>
> the wind at bus 37 has positive active power and negative reactive power
>
> but when I use "runpf" with change in active power to be 1.5 * its old value
>
> I find that reactive power (of bus 37) in the result of power flow becomes
> positive ??? how
>
> Eng. Mahmoud abdallah
> Teaching Assistant
> Ain Shams University
> Faculty of Engineering
