Immune System-Based Optimization for Power Economic Dispatch Problem

Chao-Lung Chiang

power economic dispatch problem, immune system-based optimization, valve-point effects.

This paper proposes a hybrid algorithm of an immune system-based optimization with multiplier update method (ISBO-MU) for the power economic dispatch problem (PEDP) of generating units with valve-point effects. The immune system-based optimization (ISBO) with a migrating function can actively search and effectively explore solutions. Multiplier update (MU) was employed to avoid the Lagrange function which deforms searching difficult. The investigated approach synthesizes ISBO and MU, and its merits are that it can automatically regulate the randomly given penalty to a suitable value and requiring only a small-size population for the PEDP of considering generating plants having valve-point effects. Simulated results of a 13-unit practical system dividing into two cases demonstrate that the proposed ISBO-MU is more suitable than the former studies in the actual economic dispatch application of power system.

https://dx.doi.org/10.31873/IJEAS.7.12.14