동적 부하모델 전력계통 주파수 및 관성 영향에 관한 연구

Abstract

This paper analyzes the inertial impact on dynamic simulations of power systems with changes in load models. The growing significance of inertial assessments in power systems is attributed to the increasing penetration of renewable energy. Inertial considerations encompass not only generator inertia but also load inertia. Typically, the load model employed in power system analysis is the ZIP (ZIPload) model. We hypothesized that introducing parameter variations in the load model would affect system inertia in the course of conducting power system analyses. Consequently, depending on the inertia estimation method, the inertia of the entire system was found to vary from a minimum of 1.6% to a maximum of 18% due to load model parameter changes. This underscores the crucial role of load modeling in estimating the inertia of power systems.