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Economic Load Dispatch (ELD) is one of the essential components in powersystem control and operation. Although conventional ELD formulation can besolved using mathematical programming techniques, modern power systemintroduces new models of the power units which are non-convex,non-differentiable, and sometimes non-continuous. In order to solve suchnon-convex ELD problems, in this paper we propose a new approach based on theSocial Spider Algorithm (SSA). The classical SSA is modified and enhanced toadapt to the unique characteristics of ELD problems, e.g., valve-point effects,multi-fuel operations, prohibited operating zones, and line losses. Todemonstrate the superiority of our proposed approach, five widely-adopted testsystems are employed and the simulation results are compared with thestate-of-the-art algorithms. In addition, the parameter sensitivity isillustrated by a series of simulations. The simulation results show that SSAcan solve ELD problems effectively and efficiently.

A Social Spider Algorithm for Solving the Non-convex Economic Load Dispatch Problem