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Infrastructure Resilience Conference 2018

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Understanding Resiliency of the Electricity Infrastructure- Emphasis on a Comprehensive Framework

Electricity infrastructure also operationally termed as Power Systems plays a prominent role in delivering the power from the remote generation points to the load centers or the consumption points. Power system outages pose large financial impacts on the economies, ranging from residential to small businesses to large corporations. Digitization of society and increased usage of electronic equipment upsurges consumer reliance on electricity and reduces customer tolerance for even short outages, thereby increasing pressure on energy utilities to enhance power system resiliency. In this context of the power system, resiliency includes the ability to withstand the system and the ability to quickly recover from high impact, low frequency events. This work identified such factors namely, extreme weather events, increasing digitization of society and shifting consumer expectations, extreme weather impact on growing variable generation, increasing vulnerability to cyber-attacks, enhanced awareness of physical security risks, and vulnerability due to increased dependence on natural gas for electric power. For example, the resiliency of the electric power system is threatened by extreme weather events and natural disasters, including hurricanes and tornadoes, flooding and sea level rise, earthquakes and consequent tsunamis, severe wildfires, drought, or heatwaves, and severe winter storms. Recent extreme weather events inflicted considerable damage on electric infrastructure and left customers without power. This presentation put forward an overview of a comprehensive framework highlighting the information flows with intrinsic factors which affect the power system operations in the viewpoint of understanding resiliency of the modern electricity infrastructure. Proposed resiliency framework spans across the Generation, Transmission, Distribution and Customer Systems (consumption points) of the electricity infrastructure. Several studies were carried out considering the outages of the power system using IEEE 9 nodes, 118 nodes and 300 node systems to understand the patterns of system operation under extreme weather events and accordingly results are presented. At the end, this presentation summarizes the innovative technologies, strategies, tools and systems applying to address the challenge of resiliency in the electricity infrastructure. This presentation also highlights the research gaps in this emerging field of resiliency pertaining to the electricity infrastructure

VSK Murthy Balijepalli
Nanyang Technological University
Singapore

Cheung Sai Hung
Nanyang Technological University
Singapore

Hao Changyu
Nanyang Technological University
Singapore

 

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