I do not have a specific release date, but my projection is that it will be
weeks, not months.
Ray
> On Jun 24, 2016, at 4:58 AM, Thomas Jäckel <[email protected]> wrote:
>
>
> Thank you for your quick answer.
> Do you already have a release-date for the new version? This would be very
> interesting, because I am currently working at this for my master-thesis. So
> it would be useful to know if the new version will be released in time or I
> have to create the code by myself.
>
> Greetings
> Thomas
>
> Gesendet: Donnerstag, 23. Juni 2016 um 17:36 Uhr
> Von: "Ray Zimmerman" <[email protected]>
> An: "MATPOWER discussion forum" <[email protected]>
> Betreff: Re: CPF-Q-Limit
> Thank you Thomas. As we speak, I am working on integrating and testing code
> from Shri (who implemented the initial CPF code) to add generator P and Q
> limiting in the CPF. It will hopefully be available in v6.0b2 shortly.
>
> Ray
>
>
>
> On Jun 23, 2016, at 7:40 AM, Thomas Jäckel <[email protected]
> <x-msg://145/[email protected]>> wrote:
>
> Dear Mr. Zimmermann, dear all,
>
> I have another few questions concerning the limits of reactive power
> generation within the CPF. I created a code by myself which should implement
> the limits:
>
> 1. After every corrector-step the code checks if any reactive power limits of
> the generators were exceeded.
> 2. If "no" – go on, if "yes" then the following steps are done:
> 3. Identify the generators, which exceed their reactive power limit and set
> the corresponding value (Q_g) to the limit of the generator. Afterwards, the
> corresponding bus is converted to a pq-bus.
> 4. Update Sbusb with the new busb and genb, update Sbust with the new bust
> and gent. Update Sxfr (which should still be the same). Update bus_types-list.
> 5. If the ref-bus was exceeded then chose a new ref-bus and adjust the
> voltage-angle. The angle for the ref-bus is “0” and the length is “1”. The
> other buses are shifted accordingly.
> 6. Go back to the previous corrector-step and start the step with new stats.
>
> So when the new the next step predictor and corrector step starts the
> following values have changed: Sbusb, V0, Vprv, ref, pv and pq.
> So in my opinion it should be able to determine the next corrector-step with
> the new information.
> Unluckily it doesn't work because the corrector-step does not convert, I
> tested the additions with case9.m. Remarkable is the change in lambda, during
> the normal cpf-procedure it gets continuously larger, but if a reactive power
> limit is exceeded and my code is applied, lambda gets negative – I do not
> know why.
>
> I attached the code if you need to have a closer look. The qlimit-code is
> applied between 277 and 431.
>
> Thank you very much for your help
>
> Kind regards,
>
> Thomas
> <runcpf_with_qlim.m>
