Intellectual overall evaluation of power quality including system cost

Abstract

This paper presents a new methodology to evaluate power quality for a distribution system. Instead traditional evaluation methodology can evaluate a certain face of power quality, such as SAIFI and SAIDI for reliability, SARFI for voltage sag/swell, and THD for harmonics, by using IEEE Standard Indices, newly present evaluation methodology can overall evaluate for power quality items, maintenance cost, and system losses. This methodology uses AHP model and newly developed Ideal AHP. First, AHP model was employed and implemented for power quality overall evaluation. Second, Ideal AHP was developed to overcome different unit problems of power quality. This paper applied the method for a distribution system, and showed the process of the method, and obtained overall evaluation of the system.