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The need for reduction in emission of harmful gases such as carbon dioxide, sulfur dioxide and nitrogen oxides from fossil fuel fired power plants has attracted our attention since it pollutes the atmosphere. So an attempt has been made to combine the concept of emission dispatch along with an economic dispatch problem with the help of the ABC algorithm using the weighting function method in power system operation. To apply this algorithm the original problem of optimization has been changed into the problem of identifying the best parameter that optimizes the objective function. This algorithm has shown its effectiveness in solving many real world problems with many constraints in different domains. The designed approach has been tested using Standard IEEE 30 bus system with incremental cost function along with emission coefficients valve opening and closing effects in the power plant. The result obtained shows that the designed approach was identified to be the best and most efficient in identifying the global minimum among the search space compared with other existing techniques.

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