ptimum ? Is there a
> proof that the interior point method solves the non-linear problems to the
> global optimum or very close to it?
>
> Thank you
>
> Date: Wed, 24 Jul 2013 08:56:51 +0200
> From: sschnei...@ffe.de
> To: matpower-l@cornell.edu; matpowe...@lis
ed, 24 Jul 2013 08:56:51 +0200
From: sschnei...@ffe.de
To: matpower-l@cornell.edu; matpowe...@list.cornell.edu
Subject: Re: OPF on matpower
Dear Dr. Zimmerman,
the "Bus types play no role" confused me a bit, so I tried declaring some
previous generator nodes as PQ buses.
It seems to m
limits are not respected as well.
>
> eg for a generators I have set , Pmax = 12, and the results show that it s
> Pmax is 135 MW!
>
> Why does this happen ? How can I fix it ?
>
> Thak you
>
> From: r...@cornell.edu
> Subject: Re: OPF on matpower
> Dat
Pmax
is 135 MW!
Why does this happen ? How can I fix it ?
Thak you
From: r...@cornell.edu
Subject: Re: OPF on matpower
Date: Wed, 24 Jul 2013 15:03:24 -0400
To: matpowe...@list.cornell.edu
The VG column in the gen matrix is only for the power flow problem. It has no
effect on the OPF
The comments were specifically as regards the OPF problem, *not* for the power
flow problem. For the power flow problem, changing a PV to PQ bus switches from
Vm fixed and Qg variable, to Qg fixed and Vm variable.
--
Ray Zimmerman
Senior Research Associate
B30 Warren Hall, Cornell University, I
> determined in the ACOPF.
>
> Do you agree with this?
>
> Secondly, I would like to ask you : Is it compulsory that a bus equipped with
> generators, has voltage magnitude >=1 pu in the ACOPF results?
>
> Thank you
>
> From: r...@cornell.edu
>
>
I would like to ask you : Is it compulsory that a bus equipped with
> generators, has voltage magnitude >=1 pu in the ACOPF results?
>
> Thank you
>
> From: r...@cornell.edu
> Subject: Re: OPF on matpower
> Date: Tue, 23 Jul 2013 13:44:09 -0400
> To: matpower-l@cornell.
...@list.cornell.edu
Subject: Re: OPF on matpower
Dear Dr. Zimmerman,
the "Bus types play no role" confused me a bit, so I tried declaring some
previous generator nodes as PQ buses.
It seems to me the only effect is, that the voltage now is not longer fixed to
the generator set poin
Dear Dr. Zimmerman,
the "Bus types play no role" confused me a bit, so I tried declaring some
previous generator nodes as PQ buses.
It seems to me the only effect is, that the voltage now is not longer fixed to
the generator set point during a normal Power Flow calculation.
Do you know if tha
ory that a bus equipped
> with generators, has voltage magnitude >=1 pu in the ACOPF results?
>
> Thank you
>
> --
> From: r...@cornell.edu
>
> Subject: Re: OPF on matpower
> Date: Tue, 23 Jul 2013 13:44:09 -0400
> To: matpower-l@cornel
voltage magnitude >=1 pu in the ACOPF results?
Thank you
From: r...@cornell.edu
Subject: Re: OPF on matpower
Date: Tue, 23 Jul 2013 13:44:09 -0400
To: matpower-l@cornell.edu
Shri is correct … with some *very* minor tweaks … the only bus type that
matters is the REF bus which determines
> Thank you
>
> CC: matpower-l@cornell.edu
> From: abhy...@mcs.anl.gov
> Subject: Re: OPF on matpower
> Date: Tue, 23 Jul 2013 10:05:21 -0700
> To: matpowe...@list.cornell.edu
>
>
>
> On Jul 23, 2013, at 9:42 AM, spyros gian wrote:
>
> Dear Dr Zimmerman
Shri is correct … with some *very* minor tweaks … the only bus type that
matters is the REF bus which determines the voltage reference for the system,
and the voltage angle at that bus is set to the corresponding value in the bus
matrix, which is usually set to 0, but need not be.
And, yes, the
linear , is the optimum found a global optimum ?
Thank you
CC: matpower-l@cornell.edu
From: abhy...@mcs.anl.gov
Subject: Re: OPF on matpower
Date: Tue, 23 Jul 2013 10:05:21 -0700
To: matpowe...@list.cornell.edu
On Jul 23, 2013, at 9:42 AM, spyros gian wrote:
Dear Dr Zimmerman,
Running an
On Jul 23, 2013, at 9:42 AM, spyros gian wrote:
> Dear Dr Zimmerman,
>
> Running an OPF in matpower means that
>
> 1. Bus types play no role (eg slack, PV, PQ etc)
Yes.
> 2. All values for Real Power generation and reactive power generation are
> unknown
Yes.
> 3. All values for bus_volta
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