Re: Jacobian: vector and matrix derivatives

[Ray Zimmerman]

These are derivatives of complex voltages with respect to voltage magnitudes 
and angles.  If you haven’t already, please see the MATPOWER Tech Note 2 "AC 
Power Flows, Generalized OPF Costs and their Derivatives using Complex Matrix 
Notation ” 
listed in the Documentation section of the MATPOWER home page, especially 
section 3.

Hopefully, that will answer your question.

Ray


> On Mar 29, 2017, at 9:46 PM, Albert Sarnari  wrote:
> 
> Dear Mr Zimmerman
>  
> Could you please explain why the derivative of the voltage( dV/dVm  or 
> dV/dVa) results in a matrix form: diag(V./abs(V)), when V is a vector, as 
> shown in dSbus_dV.m?
>  
> I will appreciate your reply.
>  
> Kind regards
>  
> Albert 

Jacobian: vector and matrix derivatives

[Albert Sarnari]

Dear Mr Zimmerman

 

Could you please explain why the derivative of the voltage( dV/dVm  or
dV/dVa) results in a matrix form: diag(V./abs(V)), when V is a vector, as
shown in dSbus_dV.m?

 

I will appreciate your reply.

 

Kind regards

 

Albert 

 

RE: Jacobian: vector and matrix derivatives

[Albert Sarnari]

Dear Mr Zimmerman

 

Could you please explain why the derivative of the voltage( dV/dVm  or dV/dVa) 
results in a matrix form: diag(V./abs(V)), when V is a vector, as shown in 
dSbus_dV.m?

 

I will appreciate your reply.

 

Kind regards

 

Albert