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Do you include reactive generation in
the decision variables of your formulation? If you don't, then
your optimization algorithm does not really have much impact on
voltages.
carlos.
Mohamed Shaheen wrote:
I'm currently using penalty functions with GA and
Tree-Seed, But after running Tree-Seed algorithm including
'runpf' inside, All solutions have violations and the algorithm
chooses the minimum of these solutions which is also a false
solution.
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Rather,
it seems that your optimization method should take into
account any constraint violation and fix the issue by
itself. In some methods, such as GA, one way to do this
is by using penalty functions on constraint violations.
carlos.
Mohamed Shaheen wrote:
I need to enforce limits, but I aim to get
the optimal solution and best parameters using another
optimization method called 'Tree Seed' and compare it
with 'Genetic Algorithm' after running normal power
flow, So I'm not seeking the optimal solution using
Matpower itself.
Can Matpower help to do this?
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The power flow problem solved by runpf does not take into
account voltage limits. If you need to enforce
limits, you can use an appropriately constrained
OPF.
In this case, it just so happens that the
initial voltage specified for bus 31 in the
case57.m file happens to be the voltage at the
power flow solution.
Ray
Dear Sir,
Regarding the case57, the voltage of
bus 31 is 0.936 p.u which is less than
the min. limit of bus voltage (0.94).
Every time I run 'runpf', the voltage
value is 0.936 and it doesn't change
although it is a PQ bus.
I need your help, please.
Regards,
Mohamed Shaheen.
Msc. student at Ain Shams University
in Egypt
Teaching Assistant in Future
University in Egypt
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