Genetic algorithms based economic dispatch for cogeneration units considering multiplant multibuyer wheeling

A new method based on genetic algorithms (GA) is proposed for optimal dispatch among multiplant (cogeneration systems) with multicogenerators, which transmit MW to designated buyers (load buses) via wheeling. The operation constraints in the cogeneration systems and security constraints in the third party (transmission system owner) were considered. Varying weighting coefficients for penalty functions and determination of gene variables for GA were discussed. The IEEE 30- and 118-bus systems were used as test systems to illustrate the applicability of the proposed method.