Re: AW: CPF - Functionality

[Abhyankar, Shrirang G.]

Hi Thomas,
  Sorry for the late reply. Yes, it does not matter how big Sxfr is.

Shri

On Jun 9, 2016, at 12:39 PM, Thomas Jäckel 
> wrote:

Thank you ver much for your quick answer.


1. Just to be sure: So in the end it doesn’t matter how big the Sxfr is. 
Important is only the relation between the different rows of the vector?


Thomas

Von: 
bounce-120551126-75986...@list.cornell.edu
 [mailto:bounce-120551126-75986...@list.cornell.edu] Im Auftrag von Abhyankar, 
Shrirang G.
Gesendet: Donnerstag, 9. Juni 2016 16:54
An: MATPOWER discussion forum 
>
Betreff: Re: CPF - Functionality

1. Yes.
2. CPF with generator active and reactive power limits should be hopefully 
available in the upcoming version of MATPOWER. Checking for min. or max. bus 
voltages is not available in CPF. With some modifications in the CPF code, you 
should be able to check voltages. We were working on user-defined callbacks for 
CPF to enforce limits, check voltages, or any other user-defined operation. 
But, we decided to not add in the MatPower code base for now. Hopefully, we can 
have that feature available in the future.

Shri

On Jun 9, 2016, at 8:15 AM, Thomas Jäckel 
> wrote:
Hallo,

I have a two questions concerning the functionality of the runcpf-function.
1.If I get it correctly, it can be used the following way: You have to 
import a basescenario and a targetscenario. Then the tool calculates the 
difference (Sxfr) between the base-power and target-power at every bus. Based 
on these datas the actual cpf starts and determines the maximum value for 
lambda, whereby the maximum transmitted power equals lambda*Sxfr. Is this 
correct?
2.Is there any way to limit the maximum or minimum voltage per bus or to 
limit the reactive power generation per generator?
Thank you very much
Thomas

RE: CPF - Functionality

[Camille Hamon]

Dear Thomas,

If you are only interested in finding the maximum transfer limit, you can use 
the OPF-based code "maxloadlim" that you can find in the "extras" folder in the 
latest Matpower version (6.0b1). This OPF-based code allows you to consider the 
reactive power limits when finding the maximum transfer limit. By default, the 
bus voltage limits are relaxed, but should you wish to keep them you can 
comment out the corresponding two lines of code. This OPF-based code does not 
provide the P-V curves, however.

Kind regards,
Camille

From: bounce-120551612-74160...@list.cornell.edu 
[mailto:bounce-120551612-74160...@list.cornell.edu] On Behalf Of Thomas Jäckel
Sent: 9. juni 2016 19:39
To: 'MATPOWER discussion forum' 
Subject: AW: CPF - Functionality

Thank you ver much for your quick answer.


1.  Just to be sure: So in the end it doesn't matter how big the Sxfr is. 
Important is only the relation between the different rows of the vector?


Thomas

Von: 
bounce-120551126-75986...@list.cornell.edu
 [mailto:bounce-120551126-75986...@list.cornell.edu] Im Auftrag von Abhyankar, 
Shrirang G.
Gesendet: Donnerstag, 9. Juni 2016 16:54
An: MATPOWER discussion forum 
>
Betreff: Re: CPF - Functionality

1. Yes.
2. CPF with generator active and reactive power limits should be hopefully 
available in the upcoming version of MATPOWER. Checking for min. or max. bus 
voltages is not available in CPF. With some modifications in the CPF code, you 
should be able to check voltages. We were working on user-defined callbacks for 
CPF to enforce limits, check voltages, or any other user-defined operation. 
But, we decided to not add in the MatPower code base for now. Hopefully, we can 
have that feature available in the future.

Shri

On Jun 9, 2016, at 8:15 AM, Thomas Jäckel 
> wrote:
Hallo,

I have a two questions concerning the functionality of the runcpf-function.
1.If I get it correctly, it can be used the following way: You have to 
import a basescenario and a targetscenario. Then the tool calculates the 
difference (Sxfr) between the base-power and target-power at every bus. Based 
on these datas the actual cpf starts and determines the maximum value for 
lambda, whereby the maximum transmitted power equals lambda*Sxfr. Is this 
correct?
2.Is there any way to limit the maximum or minimum voltage per bus or to 
limit the reactive power generation per generator?
Thank you very much
Thomas