I’m afraid I don’t know the answer to your question. That’s something that you
should be able to determine with a bit of experimentation.
However, I suspect you may want to use Rui Bo’s state estimator code in
extras/se instead of the original code in extras/state_estimator. It at least
has some documentation.
Ray
> On Mar 15, 2016, at 12:28 AM, Mahesh P <[email protected]> wrote:
>
> Dear Sir,
>
> I am running state estimation program for IEEE 118-bus system. I am getting
> following error. This program is converging for all the test systems except
> IEEE 118-bus system. Please help me to resolve this problem. Is this error is
> due to ill-conditioning of Jacobian matrix when initialising with flat start.
>
> runse('case118')
>
> Newton's method power flow converged in 3 iterations.
>
> State estimator converged in 5 iterations.
>
> Rejecting 1 measurement(s) as bad data:
> index B
> ----- -------------
> 441 55759.60
> Warning: Matrix is singular to working precision.
> > In state_est at 193
> In runse at 148
> Warning: Matrix is singular to working precision.
> > In state_est at 193
> In runse at 148
> Warning: Matrix is singular to working precision.
>
> Thanking you,
> <118bus.jpg>
