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332 Decision Making Applications in Modern Power Systems

generation. However, all the techniques for this purpose were searched for a
solution that requires less investment to run, which is ED with minimal
emissions.
A new methodology was developed to evaluate the environmental pollu-
tion caused by a TPP. This method, unlike the other ones in the literature,
does not assign a cost value to emissions but use a general index that consid-
ers not only the cost but also the impacts on the environment caused by the
production. To make comparisons among different engines and fuels,
the concept of specific emission index was developed, which is simply the
emission index divided by the power generated by each engine.
The results of the current study, considering the emission index and using
the NSGA-II optimization procedure, were significant and can be applied to any
TPP that makes the use of the new approach possible to give support to profes-
sionals in the field to reduce the cost and emission involved in generation.

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