In this paper, a micro-genetic based approach to the optimization of reactive power and voltage profiles improvement and real power loss minimization is presented. The reactive power control devices such as generators, tap positions of on-load tap changer of transformers, shunt reactors are used to correct voltage limits violations while simultaneously reducing the system real power losses. Genetic algorithms (GAs) are well-known global search techniques anchored on the mechanisms of natural selection and genetics. Because of the time intensive nature of the conventional GA, the micro-GA is proposed as a more time efficient alternative. The feasibility and effectiveness of the developed algorithm is tested and verified on the Nigerian grid power system for three case studies scenarios preset in the power world simulator. The far-reaching simulation results that validate the effectiveness of the developed tool are presented and discussed in depth.

Meeting Name

IEEE Power Engineering Society General Meeting, 2005


Electrical and Computer Engineering

Keywords and Phrases

Nigerian Grid System; Generators; Genetic Algorithms; Global Search Techniques; Microgenetic Algorithm; On-Load Tap Changer; Power Grids; Power System Control; Reactive Power Control; Reactive Power Profiles Improvement; Real Power Loss Minimization; Shunt Reactors; Voltage Control; Voltage Profiles Improvement

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2005 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

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