Abstract
The exhaustive knowledge of optimal power flow (OPF) methods is critical for proper system operation and planning, since OPF methods are utilized for finding the optimal state of any system under system constraint conditions, such as loss minimization, reactive power limits, thermal limits of transmission lines, and reactive power optimization. Incorporating renewable energy sources optimized the power flow of system under different constraints. This work presents a comprehensive study of optimal power flows methods with conventional and renewable energy constraints. Additionally, this work presents a progress of optimal power flow solution from its beginning to its present form. Authors classify the optimal power flow methods under different constraints condition of conventional and renewable energy sources. The current and future applications of optimal power flow programs in smart system planning, operations, sensitivity calculation, and control are presented. This study will help the engineers and researchers to optimize power flow with conventional and renewable energy sources.
Highlights
The optimal power flow (OPF) in power system is an optimization problem under various constraints
The results show that through an effective control and coordination of energy storage systems, the expectedness of wind plant outputs is increased and the cost of combination associated with reserve necessities is decreased
Techniques used for optimization of systems incorporating renewable energy sources such as microgrid, storage system, electrical vehicle, wind, and solar are reviewed in this work
Summary
The OPF in power system is an optimization problem under various constraints. It is practically significant and wellexplored subfield of constrained optimization. Carpentier [1] introduced the OPF problem in 1979. Carpentier introduced OPF as an extension to the problem of optimal economic dispatch (ED) of generation in traditional power systems. OPF techniques are traditional and metaheuristic based. Due to large integration of renewable energy sources in conventional power system, incorporation of uncertainties in OPF calculation is essential. Authors present a comprehensive study of optimal power flow methods.
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