That is not the Implicit Zbus Gauss method described in my dissertation. That
is the standard Gauss-Seidel method that is already implemented in MATPOWER.
And by the way, the easy way to run that one is …
opt = mpoption('PF_ALG', 4);
runpf(case_name, opt);
--
Ray Zimmerman
Senior Research Associate
419A Warren Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
On Oct 10, 2012, at 3:26 AM, Zeinab Ghofrani <[email protected]> wrote:
> Dear Dr Zimmerman
>
> I implemented the Gauss method using the following codes, but still there is
> convergence problem:
>
>
> case_name='case_dist_32bus';
> mpc = loadcase(case_name);
>
> ref=[33]; pv=[];
> pq=1:32; pq=pq';
> V0=ones(size(mpc.bus,1),1);
> Sbus=makeSbus(mpc.baseMVA, mpc.bus, mpc.gen);
> Ybus=makeYbus(mpc);
> results=gausspf(Ybus, Sbus, V0, ref, pv, pq);
>
> The system matpower data is attached to this email.
>
> Thanks
> Zeinab Ghofrani
>
> From: Ray Zimmerman <[email protected]>
> To: MATPOWER discussion forum <[email protected]>
> Sent: Monday, October 8, 2012 7:49 AM
> Subject: Re: convergence of 32-bus distribution network PF
>
> I wish I could. Unfortunately, the code I used for my thesis was tightly tied
> to some proprietary data formats and it also does not run on current versions
> of Matlab. I you already have the data in MATPOWER format, it would probably
> be rather straightforward to implement the Implicit Zbus Gauss method, since
> MATPOWER can easily build the Ybus matrix for you. That's probably the
> approach I would take if I were you.
>
> --
> Ray Zimmerman
> Senior Research Associate
> 419A Warren Hall, Cornell University, Ithaca, NY 14853
> phone: (607) 255-9645
>
>
>
>
> On Oct 6, 2012, at 1:27 AM, Zeinab Ghofrani <[email protected]> wrote:
>
>> Dear Dr Zimmerman;
>>
>> Thanks for sending me your thesis, which was very useful. Could you please
>> provide me with a reliable MATLAB code for running backward-forward sweep
>> load flow on a radial distribution matpower case?
>>
>>
>>
>>
>> Zeinab Ghofrani
>>
>> From: Ray Zimmerman <[email protected]>
>> To: MATPOWER discussion forum <[email protected]>
>> Sent: Friday, October 5, 2012 6:21 AM
>> Subject: Re: convergence of 32-bus distribution network PF
>>
>> My guess is that it may require a different power flow formulation, namely
>> one that is specifically designed for radial distribution systems. Feel free
>> to look at my dissertation and the references in it for some ideas.
>>
>> --
>> Ray Zimmerman
>> Senior Research Associate
>> 419A Warren Hall, Cornell University, Ithaca, NY 14853
>> phone: (607) 255-9645
>>
>>
>>
>> On Oct 5, 2012, at 2:37 AM, Zeinab Ghofrani <[email protected]> wrote:
>>
>>> Dear all;
>>>
>>> I'm tryning to run power flow on the 32 bus distribution system described
>>> in the following paper:
>>> M. E. Baran and F. F. Wu, “Network Reconfiguration in Distribution Systems
>>> for Loss Reduction and Load Balancing”, IEEE Trans on Power Delivery, 1989,
>>> Vol 4(2), pp
>>> 1401-1407.
>>> I have chnaged the place of the tie switches so that the modified system
>>> has a long latteral with high voltage drop. The power flow doesn't
>>> converge, unless we set Vg of mpc.gen matrix to 1.3. How can I have a
>>> converged load flow when Vg is set to 1?
>>> The data I use is attached to this email. Waiting for your reply.
>>>
>>> Zeinab Ghofrani
>>> <case_dist_32bus.m>
>>
>>
>>
>
>
>
> <case_dist_32bus.m>
