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In this paper, a load dispatch problem is solved to minimize the emission due to oxides of nitrogen (NOx), considering both thermal and wind generators. The effects of wind power to control overall emission of NOx substances are also investigated here. To find the optimum emission dispatch schedule, a newly developed optimization technique, Gravitational Search Algorithm (GSA) has been applied. GSA is based on the Newton's law of gravity and mass interactions. IEEE 30-bus system having six conventional thermal generators has been considered as test system. Two extra wind turbines are also placed within the system. Results obtained by GSA are compared with the results obtained by an already existing numerical optimization procedure available in the literature. The results show that the new GSA algorithm outperforms the other available techniques in terms of solution quality.
Date of Conference: 30-31 March 2012