**6. Conclusion**

A three phase strategy based differential evolution (DE) method is proposed to enhance the power quality with consideration of multi hybrid model based shunt FACTS devices (STATCOM), and wind source. The performance of the proposed approach has been tested with the modified IEEE 30-Bus with smooth cost function, at normal condition and at critical loading conditions with consideration of contingency. The results of the proposed hybrid model integrated within the power flow algorithm compared with the base case with only conventional units (thermal generators units). It is observed that the proposed dynamic hybrid model is capable to improving the indices of power quality in term of reduction voltage deviation, and power losses.

Due to these efficient properties, in the future work, author will still to apply this algorithm to solve the practical optimal power flow of large power system with consideration of multi hybrid model under severe loading conditions and with consideration of practical constraints.
