Optimization of Real Power Loss and Voltage Stability Index for Distribution Systems with Distributed Generation

Abstract:

Integrating Distributed Generation (DG) units into distribution systems can have an impact on the voltage profile, power flow, power losses, and voltage stability. In this paper, a new methodology for DG location and sizing are developed to minimize system losses and maximize voltage stability index (VSI). A proper allocation of DG has to be determined using the fuzzy ranking method to verify best compromised solutions and achieve maximum benefits. Synchronous machines are utilized and its power factor is optimally determined via genetic optimization to inject reactive power to decrease system losses and improve voltage profile and VSI. The Augmented Lagrangian Genetic Algorithm with nonlinear mixed-integer variables and Non-dominated Sorting Genetic Algorithm have been implemented to solve both single/multi-objective function optimization problems. For proposed methodology effectiveness verification, it is tested on 33-bus and 69-bus radial distribution systems then compared with previous works.

• Periodical: International Journal of Engineering Research in Africa (Volume 33)
• Pages: 100-114
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.33.100
• Online since: November 2017
• Authors: Mostafa A. Elshahed*, Mahmoud Dawod, Zeinab H. Osman
• Keywords: Distributed Generation, Distribution System, Fuzzy Ranking, Power Losses Minimization, Voltage Stability Index

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