Risk-based economic assessment of mitigation strategies for power distribution poles subjected to hurricanes
- 17 January 2013
- journal article
- research article
- Published by Taylor & Francis Ltd in Structure and Infrastructure Engineering
- Vol. 10 (6), 740-752
- https://doi.org/10.1080/15732479.2012.759240
Abstract
This paper presents a risk-based framework to assess the hurricane damage risks to distribution poles, and investigates the risks, costs and benefit of different mitigation strategies. It is estimated that power outages due to storms cause approximately $270 million in repair/replacement costs annually in the USA. Hurricane Irene alone left approximately 6 million residents without power along the east coast of the USA in 2011, causing an estimated $5–$7 billion in damages. These high repair/replacement costs warrant an investigation of mitigation strategies that may aid in reducing replacement and damage costs. This paper describes the reliability analysis of typical timber distribution poles and probabilistic wind models to determine failure probabilities for specific locations. Furthermore, in order to more accurately portray the behaviour of distribution poles, the proposed framework includes the degradation and service-proven reliability of timber distribution poles. Four mitigation strategies are developed, and the cost effectiveness of each strategy is evaluated. In order to assess the cost effectiveness, a life cycle cost analysis is conducted for each mitigation strategy. This paper finds that appropriate mitigation strategies can reduce replacement costs of distribution poles associated with hurricane wind by 2060.Keywords
This publication has 26 references indexed in Scilit:
- Electric Power Distribution ReliabilityPublished by Taylor & Francis Ltd ,2017
- A probabilistic-based framework for impact and adaptation assessment of climate change on hurricane damage risks and costsStructural Safety, 2011
- Hurricane damage to residential construction in the US: Importance of uncertainty modeling in risk assessmentEngineering Structures, 2006
- Achieved Reliability of the North American Design Approaches for Transmission Overhead StructuresPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Panel session: Structural reliability-based design of utility poles and the National Electrical Safety CodePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Electric Power Distribution System Performance in Carolina HurricanesNatural Hazards Review, 2003
- Reliability of poles in NESC grade C constructionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Asset management for the distribution pole plant-closing the performance gap between traditional maintenance and asset managementPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Simulation of wood pole replacement rate and its application to life cycle economy studiesIEEE Transactions on Power Delivery, 2000
- Wind Load Statistics for Probability-Based Structural DesignJournal of Structural Engineering, 1999