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
> 
> 
                                          

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