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Object-Oriented Economic Power Dispatch of Electrical Power System with minimum pollution sing a Genetic Algorithm

This paper presents solution of optimal power flow ( OPF) problem of electrical power system via a genetic algorithm of real type. The objective is to minimize the total fuel cost of generation and environmental pollution caused by fossil based thermal generating units and also maintain an acceptable system performance in terms of limits on generator real and reactive power outputs, bus voltages, shunt capacitors/reactors, transformers tap-setting and power flow of transmission lines.
CPU times can be reduced by decomposing the optimization constraints to active constraints that affect directly the cost function manipulated directly the GA, and passive constraints such as generator bus voltages and transformer tap setting maintained in their soft limits using a conventional constraint load flow. The algorithm was developed in an Object Oriented fashion, in the C++ programming language. This option satisfies the requirements of flexibility, extensibility,maintainability and data integrity. The economic power dispatch is applied to IEEE 30-bus model system ( 6-generator, 41-line and 20-load) . The numerical results have demonstrate the effectiveness of the stochastic search algorithms
because its can provide accurate dispatch solutions with reasonable time. Further analyses indicate that this method is effective for large-scale power systems.


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