What you show is a warning (not an error) coming from the Power Summation
method. As long is the method converges with success = 1, the result should be
valid.
Also, if the Newton power flow converges, its result should also be fine.
Sometimes the Newton power flow has more difficulty on distribution systems,
but it depends on the case.
Ray
On Nov 18, 2023, at 6:29 AM, Muhammad Junaid <gaylethunder...@gmail.com> wrote:
Hi Sir,
I hope you are doing well. Sir, when we use this data for the generator matrix,
it gets solved using Newton's Power Flow but gives this error:
MATPOWER Version 7.1, 08-Oct-2020 -- AC Power Flow (Power Summation)
Warning: Matrix is singular to working precision.
> In calc_v_pq_sum (line 53)
In radial_pf (line 63)
In runpf (line 283)
In Code (line 118)
Power summation did not converge in 20 iterations when using the
Forward-Backward Sweep method. I have considered the case33bw distribution
network. Shouldn't the Forward-Backward Sweep method be better able to solve
this network, considering it is a distribution network? Or is Newton's Power
Flow modified to accurately solve radial networks as well?
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