Dear Dr Zimmerman, In Distributed Generation(DG) siting and sizing, it's always required that the optimal size and its location point (the bus which DG is to be located)in the network should ensure that the following qualities of that network are maintained. ALL REACTIVE POWER WITHIN LIMITS. ALL CURRENT FLOWS WITHIN LIMITS. ALL REAL POWER FLOWS WITHIN LIMITS. ALL APPARENT POWER FLOWS WITHIN LIMITS. This means location of DG should not cause any of the above problem. My thinking is that how do we enforce this in power flow analysis of MATPOWER. I am not thinking of running OPF. I only want to use power flow to determined the steady state of the network after the placement of optimal DG size in its Optimal location that gives the best loss reduction. I thought they could be way of enforcing this violation so that one can have final summary of all the violations if any or how fix it if any. Since the violation checked by running the power flow all available sizes and location using random search based on some search techniques like PSO,GA etc. May be I don't understand your explanation very well but that's what am targeting at.
Many thanks Idris Musa >-----Original Message----- >From: [email protected] [mailto:bounce-6063748- >[email protected]] On Behalf Of Ray Zimmerman >Sent: 25 June 2010 19:09 >To: MATPOWER discussion forum >Subject: Re: MATPOWER Power flow > >Standard power flow computes flows for a specified real power dispatch >pattern and specified generator voltage setpoints. This can result in >voltage limit, branch flow limit and gen reactive limit violations. If >you want these limits to be respected as well, you have to decide which >of your power flow inputs you are willing to free up in order to fix the >violation. If you can tell me that, I might be able to suggest a way to >do it. I suspect you'll probably end up wanting to use an OPF with >tightened constraints on certain variables. > >-- >Ray Zimmerman >Senior Research Associate >211 Warren Hall, Cornell University, Ithaca, NY 14853 >phone: (607) 255-9645 > > > >On Jun 25, 2010, at 11:13 AM, Idris Musa wrote: > >> Dear all, >> I am working on Distributed Generation and want to use MATPOWER for >Power flow analysis subjects to the following constraints; Voltage >limits, Branch flow limits (current limits) >> How do I enforce this constraints to run the power flow. >> >> Regards >> Idris >> >> >> > >
