So, if the reactive dispatch of your generators is constrained to be
within a 0.95 power factor, then you can use MATPOWER's trapezoidal
modeling of the (P,Q) feasible region. as opposed to simple bound
constraints on P and Q
for a generator. In your case, if Pmin reaches down to 0, then you have
more of a cone instead of a trapezoid.
This is best explained using a picture; see manual for details.
carlos.
Richard Ngonga wrote:
Thanks for that, I mean photo voltaic. I am modelling PV generators
that are able to dispatch reactive power(i.e operating at -0.95 to
0.95 power factor).
> Date: Mon, 20 Aug 2012 01:34:09 -0400
> From: [email protected]
> To: [email protected]
> Subject: Re: PV Generators and Transformer modelling
>
> Um, an unfortunate crisscross with acronyms... by PV generators do you
> mean power-voltage as in classical power flow problem parlance or do
you
> rather mean "photo voltaic"?
>
> Richard Ngonga wrote:
> >
> > Hi there,
> >
> > I am working on a thesis on reactive power control on a distributed
> > network with transformers and PV generators. Can I model the PVs as
> > generators on a PV bus or should I model them as capacitors on a PQ
> > bus? I'm also having problems modelling transformers from a 20KV
> > network to a 0.4KV network; when I use the transformer ration 50 I
get
> > very large power flows and losses. The transformer data is: Sn
400KVA,
> > Usc=10%, Uprm/Usec=20/0.4(KV) and Usec set=1.05.
> >
> > Regards
>
>
