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A Damage Level Assessment Model for Extra High Voltage Transmission Towers
Abstract:Power failure resulting from tower collapse due to violent seismic events might bring enormous and inestimable losses. The Chi-Chi earthquake, for example, strongly struck Taiwan and caused huge damage to the power system on September 21, 1999. Nearly 10% of extra high voltage (EHV) transmission towers were damaged in the earthquake. Therefore, seismic hazards of EHV transmission towers should be monitored and evaluated. The ultimate goal of this study is to establish a damage level assessment model for EHV transmission towers. The data of earthquakes provided by Taiwan Central Weather Bureau serve as a reference and then lay the foundation for earthquake simulations and analyses afterward. Some parameters related to the damage level of each point of an EHV tower are simulated and analyzed by the data from monitoring stations once an earthquake occurs. Through the Fourier transform, the seismic wave is then analyzed and transformed into different wave frequencies, and the data would be shown through a response spectrum. With this method, the seismic frequency which damages EHV towers the most is clearly identified. An estimation model is built to determine the damage level caused by a future seismic event. Finally, instead of relying on visual observation done by inspectors, the proposed model can provide a power company with the damage information of a transmission tower. Using the model, manpower required by visual observation can be reduced, and the accuracy of the damage level estimation can be substantially improved. Such a model is greatly useful for health and construction monitoring because of the advantages of long-term evaluation of structural characteristics and long-term damage detection.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1130561Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 795
 CH Loh, CY Huang, KL Wen, ML Lin, CP Hsiao, KC Chang, BJ Shih, MH Hsu, CC Lin, HK Wang, WY Chien, JF Chai, TJ Teng, CH Yeh, CS Huang, GY Liu, WH Teng, SY Chang, YK Yeh, MJ Lai, SH Wang, LL Chung, WI Liao, ZK Lee, CC Hsu. "Streamline Report of the Comprehensive Disaster Investigation on Chi-Chi Earthquake" National Center for Research on Earthquake Engineering (1999) (in Chinese).
 JY Hsu, CH Chen, SW Tseng, HY Ho, SW Sun, CA Wei, JS Jwo. “An Analysis of the Safety Strategy of Power System in Taiwan from the Power Outage from "729" to "921"." Research, Development and Evaluation Commission, Executive Yuan (2000) (in Chinese).
 GY Liu, YJ Wang, CW Liu. "Study on the Risk Analysis and Disaster Reduction Strategy of Power System" National Center for Research on Earthquake Engineering (2008).
 HN Li, WL Shi, GX Wang, LG Jia. "Simplified models and experimental verification for coupled transmission tower–line system to seismic excitations." Journal of Sound and Vibration 286.3 (2005): 569-585.
 T Yin, HF Lam, HM Chow, HP Zhu. "Dynamic reduction-based structural damage detection of transmission tower utilizing ambient vibration data." Engineering Structures 31.9 (2009).
 T Li, L Hongnan, L Guohuan. "Seismic response of power transmission tower-line system under multi-component multi-support excitations." Journal of earthquake and tsunami 6.04 (2012): 1250025.
 M. C¸elebi, A. Sanli, M. Sinclair, S. Gallant, and D. Radulescu "Real-time seismic monitoring needs of a building owner—and the solution: a cooperative effort." Earthquake Spectra 20.2 (2004): 333-346.
 A Kangi. "Application of Warning and Rapid Estimation of Earthquake Damage (WARED) system in unprepared cities case study: Mashhad, north east of Iran." International journal of disaster risk reduction 13 (2015): 139-144.
 M. Erdik, K. S-es-etyan, M.B. Demircioglu, U. Hancılar, C. Zulfikar. "Rapid earthquake loss assessment after damaging earthquakes." Soil Dynamics and Earthquake Engineering 31.2 (2011): 247-266.
 Department of Power Supply. "Review and Summary of the Damage of Foundation of EHV Transmission Towers in Chi-Chi earthquake, 1999." Taiwan Power Company (2000) (in Chinese).
 LA Montejo, AL Vidot-Vega. "An Empirical Relationship between Fourier and Response Spectra Using Spectrum-Compatible Times Series." Earthquake Spectra 33.1 (2017): 179-199.
 Computers and Structures, Inc. "Detailed derivation of analytical equations used for response spectrum generation" (2009).