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Optimal reconfiguration of electrical distribution networks with dispersed generation

Moudiri Konstantina

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Summary

In recent years, renewable energy technology development and the increasing demand for electricity has resulted in the increased integration of dispersed electric power generation units in distribution networks. Nevertheless, the networks being used today have not been constructed in a way that would allow high penetration of dispersed generators. This results in the increasing need for the deployment of suitable studies, power management and control techniques.A common method to prevent network disruptions from increased penetration of dispersed generators is to curtail their active power production. However, this is not economically viable for the owners and the network operator should limit power production curtailment to the highest possible extent. Another approach is to change the network topology according to the needs at any time.In this Diploma Thesis, the network is reshaped by changing accordingly the status of the switches and the controlled shunt reactive impedances of the network. The major targets is to keep the network radial, limit the active power losses and maintain voltages within acceptable limits. The objective function and constraints of the problem are defined and the model is implemented in MATLAB code using open-source tools (MATPOWER and Particle Swarm Optimization Toolbox (Brian Birge)The proposed method was applied to two distribution networks of 33 and 136 busses and the obtained simulation results were evaluated.

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