Modeling and Quantification of Power System Resilience to Natural Hazards: A Case of Landslide

Rahim Ghorani,Matti Lehtonen,Mahmud Fotuhi-Firuzabad,Mahdi Farrokhi,Sajjad Fattaheian-Dehkordi

doi:10.1109/access.2021.3084368

Rahim Ghorani, Matti Lehtonen + Show 3 more

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https://doi.org/10.1109/access.2021.3084368

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Journal: IEEE Access	Publication Date: Jan 1, 2021
Citations: 4	License type: CC BY 4.0

Affiliation: Aalto University, Sharif University of Technology

Abstract

Power systems are stretched across thousands of miles of diverse territories, often in remote locations, to generate and transfer the energy to geographically dispersed customers. The system is therefore subjected to a wide range of natural hazards which could potentially damage critical system components and cause interruption of electricity supply in some areas. To improve system resilience against natural hazards, management frameworks are required to identify hazardous areas and prioritize reinforcement activities in order to take the most out of the limited resources. Landslide is a natural disaster that involves the breakup and downhill flow of rock, mud, water, and anything caught in the path. It is a phenomenon frequently occurred in some parts of the world that could result in the failure of power transmission networks. Consequently, in this paper, a novel approach has been proposed that quantifies the landslide hazard, its damage to power system components, and the impacts on the overall system performance to prioritize reinforcement activities and mitigate the landslide vulnerability. The proposed approach is applied to a real power system and the obtained results are discussed in detail.

Highlights

Power system is one of the largest man-made systems whose components are stretched across thousands of miles of diverse territories [1]
Power systems are highly vulnerable to natural catastrophes as geographically dispersed components of interconnected power systems are subjected to a wide range of natural hazards
For the first time, this paper aims to study the effects of landslides on power systems; modeling landslide occurrences seems to be an essential step in analyzing their effects on power system operation and planning

Summary

Introduction

Power system is one of the largest man-made systems whose components are stretched across thousands of miles of diverse territories [1]. Considering the importance of electricity in the well-being of modern societies, the vulnerability of electrical infrastructure to natural hazards, and recent natural events such as hurricane sandy, resilience studies of power systems have gained significant attention in recent years [2]–[4]. In this context, resilience is defined as ‘‘the ability to prepare for and adapt to the changing conditions as well as withstand and recover rapidly from disruptions’’ [5]. A power system is considered to be resilient if it is able to anticipate, absorb, adapt to, and/or rapidly recover from a disruptive event [6].

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