Actually I work on the problem of optimization of a microgrid, the optimization should take into consideration the whole power flows in the power system to satisfy the power balance with respect to conversion efficiency and all other imposed constraints.
So I have a lot of equations and formulations, then I wish to know the best method to simulate and to test this system?
- What's the best solver based on C++ or Java library that I can use it inside simulink model using block or s-function to optimise the powers flow by mixed integer linear programming of my power system and the way to do it?
I notice that I have a sumilink model of the power system simulated using real component of Matlab library, I mean for example to simulate PV arrays I used real component not formulations, so it's possible to use this solver embedded in simulink model to get results?
Finally, I searched a lot of a solver that I can call it easily in matlab simulink and use it inside a s-function using C++ code and also the best way to simulate this system directly in the simulink model without using command line because that make the system very hard regarding that the documentation and sources are very rare?
Please I don't ask for publications with the same problems because I lost a lot of time so I look for a direct sources and solutions?
Thanks.
ok Nabil , honestly telling you , using those equations try on matlab , things are easier and you will be able to get some results . Remember setting up the problem with LPP is one major step . I hope you have formulated the problem well.
Once that is done , rest is not all that complicated. There are webinars , try going thru them first .
https://www.mathworks.com/discovery/power-system-simulation-and-optimization.html
https://www.mathworks.com/videos/electrical-distribution-system-modeling-and-analysis-in-matlab-and-simulink-81978.html
Sorry it's not what I wish, I have already my power system simulated in matlab simulink,Thanks.
Perhaps you can share some details about the formulation of your optimization problem. Is linear, mixed integer, quadratic (convex), semidefinite or just non-linear. In the latter case, I think you are out of luck. In all other cases, consider using GUROBI.
Hello Nabil,
To avoid any misleading answers, I would represent the problem at first.
I understand your problem as following, you have made dynamic simulation (against time). For each step of time you have load-flow (or circuit analysis). Now, you need to optimize the system parameters like injected power or even switching. In that case you have to go in one of two ways. First, you have statistical data and go for optimal solution expected. Second, solve the system several times for optimal operation, using some evolutionary algorithm like genetics.
In both cases you need to make the optimization technique first, then embed your system as a block not the opposite.
If my understanding is correct, kindly let me know that may lead to some steps forward.
Hello Mohamed Kamal El-Nemr, as you said I have already my power system(microgrid) simulated in matlab simulink, also I have the optimization technique too(equations + formulations), so I have both inputs (powers) and idea of optimization, what I miss are the best way to embed or to implement code(block or s-function) + power system model in the same matlab simulink model, using a good solver(CPLEX, Gurobi, GA algorithm..) to optimise the powers flow by mixed integer linear programming.
I prefer to use C++ or Java code but if I use for example Gurobi it's possible to call code(#include "gurobi_c++.h") in matlab s-function and it will work with my power system model to make the optimization. Thanks.
Dear all,
I have a same problem. I use Mixed integer Linear Programming with the commend of intlingprog in MATLAB. Now I want to use my optimizer in the Simulink. I cannot implemented in the Simulink in a function block. It return an error so called extrinsic function error for the code generation.
If someone did this in advanced, it makes me pleased to help us!
Regard all.
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