Re: Power Flow not converging

[Carleton Coffrin]

Hi Waqas,

Most likely there is a problem with your data.  You could have a look at it in 
the validation view of,

immersive.erc.monash.edu.au/stac/

to see if anything jumps out.

You might also try the OPF solver, it may give you some hits on what is going 
wrong.  If you try the SDP-OPF solver and it says your problem is infeasible, 
then there is surely a problem with the data.

Cheers,
-Carleton

On Aug 8, 2015, at 7:38 PM, Syed, Waqas Ahmad Raazi 
mailto:waqas.s...@rwth-aachen.de>> wrote:

Hi,

I am trying to run a PF on a 154 bus system using Matpower and I am unable to 
get it converged. What I have tried so far is:

1. Increasing all the loads
2. Removing all generators and using only slack bus
3. then changing slack bus
4. trying different algorithms.


Only in the algorithm of Newton Raphson I get a warning which says:
Warning: Matrix is singular to working precision.
> In newtonpf at 89
  In runpf at 205


Kindly let me know, what should be my next course of action?

Kind Regards,
Waqas




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Power Flow not converging

[Syed, Waqas Ahmad Raazi]

Hi,

I am trying to run a PF on a 154 bus system using Matpower and I am unable to 
get it converged. What I have tried so far is:

1. Increasing all the loads
2. Removing all generators and using only slack bus
3. then changing slack bus
4. trying different algorithms.


Only in the algorithm of Newton Raphson I get a warning which says:
Warning: Matrix is singular to working precision.
> In newtonpf at 89
  In runpf at 205


Kindly let me know, what should be my next course of action?

Kind Regards,
Waqas