Research Progress about Power Grid Resilience Improvement Models under Extreme Natural Disasters

Abstract

: In recent years, the frequency of natural disasters has considerably increased; such disasters cause serious damage to power grids and threaten their safe operation. Therefore, maintaining a safe and stable distribution network has emerged as an important research direction. In this regard, researchers have proposed the concept of “resilient power grids”. In this paper, a definition of “resilience” is introduced, and quantitative indicators and evaluation methods of resilience are presented. Furthermore, measures to improve the resilience of a distribution network are summarized, along with the constraints on the modeling of distribution network resilience. This study considers the uncertainty of wind power outputs and summarizes the methods adopted for processing and modeling the uncertainty in wind power. Finally, two algorithms for solving uncertainty problems are presented, and recommendations are provided to improve the resilience of power grids.