dear sir this bus has wind thus it can't produce reactive power
all reactive power comes from the network to bus 37 thus the reactive power in the power flow output should be negative at bus 37 Eng. Mahmoud abdallah Teaching Assistant Ain Shams University Faculty of Engineering On Friday, February 14, 2014 12:53 AM, Ray Zimmerman <[email protected]> wrote: 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 >
