Simone, I think the smallish reactive power output from the generator that you are seeing is due to the reactive power supplied by the line charging capacitance(s) of the transmission line(s) connected to it. Instead of what I suggested earlier, you could set the generator output as negative load in the bus data struct (and set its bus type to PQ).
@Ray: I think the proper fix for this is by applying the following patch in pfsoln.m that excludes generators at PQ buses from gbus. - gbus = gen(on, GEN_BUS); %% what buses are they at? + gbus = find(bus(gen(on,GEN_BUS),BUS_TYPE)~=PQ) %% Only include generator buses with types PV and REF. Shri -----Original Message----- From: Simone Cochi <[email protected]> Reply-To: MATPOWER discussion forum <[email protected]> Date: Wed, 8 Oct 2014 16:01:05 +0200 To: MATPOWER discussion forum <[email protected]> Subject: Generators as negative loads >Hello there, >I asked months ago if I could simulate photovoltaic generators as PQ >negative loads in order to see the the voltage profile modifications >caused by injection of the generators.Someone advised me to put the >generator in the generator struct and to mark bus type as PQ (1). I >notice that even if I put reactive power output to zero in the >generator and bus struct, I have a little a little reactive power >output from the photovoltaic generator in the results. Someone can >explain me this behaviour? > >Thank you very much > >Simone >
