Hybrid Optimization Based Technique for Ramp Rate Limit in Economic Dispatch Problem

Abstract

The ramp rate limit (RRL) and valve point effect (VPE) are the two important components in economic dispatch involving a power transmission system. This is important to ensure whether the relevant electric utility could dispatch the power with minimal generation cost. Thus, a reliable optimization technique is a prerequisite for achieving the objectives. This paper presents Hybrid Evolutionary-Barnacles Mating Optimizer (HEBMO) approach in solving the non-convex dispatch problems with ramp rate limit (RRL). HEBMO optimization technique is derived based on the hybridization of Evolutionary Programming (EP) and Barnacles Mating Optimizer (BMO). The developed algorithm has been implemented in areliability test system (RTS), IEEE 30-Bus RTS with six generators. Several case studies have been selected to evaluate the efficiency of the proposed HEBMO. To prove the capability of the proposed technique, it is compared with the results attained from the traditional EP and BMO to solve the economic load dispatch problems. The computational times for all the scenarios have been investigated which revealed that the proposed HEBMO is significantly superior to EP and BMO. The results obtained from HEBMO show its competency in determining the optimal power dispatched with minimum generation cost.