Risk-Based Management of Electric Power Distribution Systems Subjected to Hurricane and Tornado Hazards

Abstract

Extreme events, especially weather-related events, are the leading cause of power outages in many countries around the world. Hurricanes and tornadoes are especially destructive and have caused billions of dollars in direct losses due to damage to power systems and indirect losses due to power outages. There is, therefore, a need to implement risk management strategies to reduce such losses and ensure that power systems are reliable and resilient. This chapter presents a framework for risk management of electric power distribution systems subjected to hurricane and tornado hazards. Methods for hazard analysis and component-and system-level risk analysis are discussed. Two case studies are presented to demonstrate the application of the framework. Various risk mitigation strategies such as the use of alternative pole material, targeted hardening of systems, regular preventive maintenance, and enhancement of design are considered in the case studies. Risk and cost-benefit analysis methods are presented to evaluate the effectiveness of the various mitigation strategies. A methodology for optimizing the preventive and corrective maintenance of distribution poles to reduce risk and minimize cost is also presented.

Long‐term and multi‐objective maintenance scheduling of medium voltage overhead lines based on LP metric method

“…In current paper, a method for optimizing the preventive and corrective maintenance of distribution system poles to reduce risk and minimize cost is also presented. The difference between [14] and the present paper is the use of the Weibull distribution function to determine the failure rate of electricity distribution network equipment in the present research, the results of which are closer to reality and more practical. On the other hand, in this method, any amount of equipment can be considered simultaneously in the model without adding much complexity to it.…”

“…Reference [14] used a risk management strategy to reduce damages caused by weather-related events and increase the reliability and flexibility of power systems. In [14], a framework for risk management of electric power distribution systems exposed to storm and tornado risks was provided. The methods of hazard analysis and risk analysis for system components and the whole system were discussed.…”