R. ANANDHAKUMAR ET AL.

Copyright © 2011 SciRes. EPE

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6. Conclusions

The economic dispatch problem with multiple fuel op-

tions is a complex optimization problem whose impor-

tance may increase as competition in power generation

intensifies. This paper presents economic dispatch prob-

lem with multiple fuel options using composite cost

function. The proposed CCF based solution for economic

dispatch with MFO offers a best contribution in the area

of economic dispatch. In contrast to the HM [9], this

approach fully explores the cost coefficients and gives a

promising value of power for providing improved eco-

nomic dispatch. The HM method requires the valid as-

sumptions such as initial value of lambda and it itera-

tively solves the problem. The proposed methodology is

a non-iterative method that directly gives the optimal

generation schedule of the generating set and it does not

require any assumptions. The numerical results demon-

strate that the proposed approach offers a better conver-

gence rate, minimum cost to be achieved and better solu-

tion than the existing methods. As power systems are

usually large scale systems, the proposed meth od may be

suggested for the solution of economic load dispatch

problems and it is also suitable for online applicatio ns.

7. Acknowledgements

The authors gratefully acknowledge the authorities of

Annamalai University, Annamalainagar, Tamilnadu,

India, for their continued support, encouragement, and

the extensive facilities prov ided to carry out this research

work.

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