combined heat and power system operation cost minimization using frog leaping based intelligent search algorithm

Combined heat and power (chp) systems have been utilized more and more in power systems, recently. with the increasing penetration of chp-based co-generation of electricityand heat, determination of economic dispatch of power and heat becomes a more complexand challenging task. in this paper, the optimal operation of chp-based system is studied and an algorithm is proposed for solution of it. the optimal operation of chp-basedsystems or chp economic dispatch is inherently a nonlinear and non-convex optimizationproblem with a lot of local optimal solutions. in this paper, frog leaping algorithm is usedfor solution of the problem. this heuristic algorithm is well capable to attain the optimalsolutions even in the case of non-convex optimization problems. the proposed method isimplemented on several standard test systems. the obtained results have been comparedwith other intelligent search algorithms. the numerical simulations verify that optimaloperation of chp systems can result in a large economic annual saving.