Dynamic economic dispatch using hybrid CSAJAYA algorithm considering ramp rates and diverse wind profiles

Abstract

• Dynamic economic dispatch performed for 10 and 15 units system. • Ramp rate and valve point effect considered for the study. • Penetration level was compared between three different wind profiles. • Novel hybrid CSAJAYA considered as optimization tool. • Results compared with those available in literature. • Statistical analysis performed for proposed hybrid algorithm. Optimal scheduling of the conventional generating units for two different dynamic test systems are percolated in this paper. This paper compares and contrasts among three types of wind profile formulations, namely linear, quadratic, and cubic, which were used to calculate wind power from hourly wind speed to find the profile with the greatest penetration of wind power. Thereafter, the wind profiles were coupled with the test system to execute dynamic economic dispatch. The optimization tool used for the study was a unique hybrid algorithm modelled by combining the properties of the recently developed crow search algorithm (CSA) and JAYA. Involvement of ramp-rate limits and the valve point effects magnified the practicality of the work thereby assessing the proposed hybrid algorithm in solving complex non-linear functions. Results infer that maximum level of wind penetration was attained by linear wind profile and a fuel cost reduction of 2.92% was realized upon incorporation of the same. Numerical results also claims that proposed hybrid CSAJAYA approach consistently yielded better quality solutions within minimum execution time without being affected by the dimension of the problem, thereby outperforming a long list of algorithms implemented for the study.