Nowadays, power system modeling approaches become important strategies for developing, designing, and expanding the real system. Many physical systems are analyzed and evaluated using appropriate models. Presently, renewable energy sources inclusion in the power system also becomes one of the major issues in the sustainable energy operation and environmental penetration. By considering potential sources, many local power grids are expanded to accept the renewable energy technology in the daily

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... peration. This paper presents a power flow evaluation for assessing a partial power grid model of the expanded classical system. These studies also explore thunderstorm algorithm to obtain the power balance commitment while the optimal power flow is defined using artificial salmon tracking algorithm. Results show that the renewable energy sources affect the system performances. Both algorithms can be applied to the hybrid structure model to searching the operating condition with smooth performances.