RE: PV Generators and Transformer modelling

[Richard Ngonga]

 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