转发: Static SVC model as bus Bs

[neuqxhlinwei]

Dear matpower group:

I have a same question like Ahmad Sadiq Abubakar,

 Hope you can help me.

 

-

Best regards,

Wei Lin 林巍

Zhejiang University, 

Zheda Road 38#, Hangzhou, P.R.China, 310027

+86-13675865210

 

发件人: bounce-122236163-80167...@list.cornell.edu 
[mailto:bounce-122236163-80167...@list.cornell.edu] 代表 Ahmad Sadiq Abubakar
发送时间: 2018年1月30日 1:59
收件人: MATPOWER discussion forum 
主题: Static SVC model as bus Bs

 

Hi all,

I want to represent static model of SVC which supplied e.g. Q amount of Var in 
MATPOWER

 

I simply used the sixth column of the mpc.bus matrix. I.e. the bus BS.

 

Can this be considered adequate/correct?

 

Thanks in advance

The question about extend OPF and the optimization tool

[neuqxhlinwei]

Hi, 

I see. Can we add the power loss into objective function in runopf() ?

 

-

Best regards,

Wei Lin 林巍

Zhejiang University, 

Zheda Road 38#, Hangzhou, P.R.China, 310027

+86-13675865210

 

发件人: Ray Zimmerman [mailto:r...@cornell.edu] 
发送时间: 2018年1月11日 23:56
收件人: neuqxhlin...@163.com  
主题: Re: The question about extend OPF and the optimization tool

 

(FYI, in the future, please address such questions to the  
 
MATPOWER-L mailing list, not to me directly)

 

Yes, it is possible to add user-defined costs to the OPF. Please see Sections 
6.3 and 6.4 and Chapter 7 in the MATPOWER User 
 ’s Manual. 
If you need general non-linear costs, you will need to use the latest 
development version of MATPOWER on GitHub 
   You can find the corresponding 
version of the manual here 
   
describing how to use the non-linear user-defined costs and constraints.

 

Regarding YALMIP, MATPOWER does not use it except when using SDP_PF, so you 
cannot use it to modify the problem normally solved by runopf().

 

   Ray

 

 

On Jan 10, 2018, at 9:54 PM,  >  > wrote:

 

Dear matpower:

Thanks for matpower solving lots of problem in my power simulation.

I have a question about the objective function in OPF. Can the system add some 
user-defined function expecting the generators cost, Like power loss , voltage 
deviation ?

And the matpower can be with some optimization tools like yalmip ? When I use 
yalmip , I define some variable but it can not be solve in matpower?

Code like:

  clc;clear;

x = sdpvar(14,1);

assign(x,ones(14,1));

mpc = loadcase('case14');

mpc.bus(:,4) = mpc.bus(:,4)  + value(x);

mpopt = mpoption('verbose',0,'out.all',0);

result = runpf(mpc,mpopt);

f = sum(abs(get_losses(result)));

F= [sum(x)<=50];

sdp_result = solvesdp(F,f); 

   and the result show the yalmip is successfully sovled , but the result 
is not right.

Hope you can help me.

 

-

Best regards,

Wei Lin 林巍

Zhejiang University, 

Zheda Road 38#, Hangzhou, P.R.China, 310027

+86-13675865210

 

转发: The question about extend OPF and the optimization tool

[neuqxhlinwei]

Hi, 

I see. Can we add the power loss into objective function in runopf() ?

 

-

Best regards,

Wei Lin 林巍

Zhejiang University, 

Zheda Road 38#, Hangzhou, P.R.China, 310027

+86-13675865210

 

发件人: Ray Zimmerman [mailto:r...@cornell.edu] 
发送时间: 2018年1月11日 23:56
收件人: neuqxhlin...@163.com
主题: Re: The question about extend OPF and the optimization tool

 

(FYI, in the future, please address such questions to the  
 
MATPOWER-L mailing list, not to me directly)





Yes, it is possible to add user-defined costs to the OPF. Please see Sections 
6.3 and 6.4 and Chapter 7 in the MATPOWER User’s Manual 
 . If you 
need general non-linear costs, you will need to use the latest development 
version of MATPOWER on GitHub    You can 
find the corresponding version of the manual here 
   
describing how to use the non-linear user-defined costs and constraints.

 

Regarding YALMIP, MATPOWER does not use it except when using SDP_PF, so you 
cannot use it to modify the problem normally solved by runopf().

 

   Ray

 





On Jan 10, 2018, at 9:54 PM,  >  > wrote:

 

Dear matpower:

Thanks for matpower solving lots of problem in my power simulation.

I have a question about the objective function in OPF. Can the system add some 
user-defined function expecting the generators cost, Like power loss , voltage 
deviation ?

And the matpower can be with some optimization tools like yalmip ? When I use 
yalmip , I define some variable but it can not be solve in matpower?

Code like:

  clc;clear;

x = sdpvar(14,1);

assign(x,ones(14,1));

mpc = loadcase('case14');

mpc.bus(:,4) = mpc.bus(:,4)  + value(x);

mpopt = mpoption('verbose',0,'out.all',0);

result = runpf(mpc,mpopt);

f = sum(abs(get_losses(result)));

F= [sum(x)<=50];

sdp_result = solvesdp(F,f); 

   and the result show the yalmip is successfully sovled , but the result 
is not right.

Hope you can help me.

 

-

Best regards,

Wei Lin 林巍

Zhejiang University, 

Zheda Road 38#, Hangzhou, P.R.China, 310027

+86-13675865210