Abstract
This paper presents an application of multi-objective optimization methods for voltage and reactive power control (VQC) taking account of an operation margin. Multi-objective optimization has been developed based on genetic algorithms (Gas) with the characteristic of multi points search. An operation margin is considered to minimize generator reactive outputs and tap potions difference from the neutral. To make clear usability of the proposed method, results of applying the proposed method to a 15 bus system model and a 118 bus system model are compared to result of studies using the conventional weighting coefficients, and effectiveness of the proposed method is discussed.
