Background: Recently, the incorporation of Distributed Static-Compensator and Distributed
Generation in distribution system has become essential for the distribution companies to be adopted for
the overall system benefit. In this study, the optimal sizing and siting of these devices are conducted in
distribution system using Modified Shuffled Frog Leaping Algorithm to maximize the technical,
economic, and environmental benefits.
Methods: New frog leaping rules are proposed in the Modified Shuffled Frog Leaping Algorithm to
enhance the overall performance of the algorithm. Innovative formulas such as Revamp Voltage
Stability Index, Benefit Cost Ratio, and Environmental Benefit Index are formulated to assess the
technical, economic, and environmental aspects of the device. To judge the feasibility and accuracy of
the proposed technique, it is applied on 33-bus and 69-bus distribution system considering different load
models and after that, the performances of the devices are analyzed on the basis of the techno-economic
and environmental impacts.
Results: Furthermore, the overall system benefit is also investigated after placing both the devices
simultaneously. The proposed method is compared with other evolutionary algorithms to prove its
Conclusion: This entire analysis will facilitate the power industry to choose an optimal strategy for the
overall benefit of the system.