Seismic Vulnerability of Onshore Wind Farms

DOI

10.2991/978-94-6463-449-5_81How to use a DOI?

Keywords

wind turbine; wind farm; seismic vulnerability; incremental dynamic analysis; pushover analysis

Abstract

In recent years, more and more wind farms in China, increasing the potential for seismic vulnerability. The operation and damage status of wind turbine towers under seismic action is classified into four levels: intact, temporarily out of operation, permanently out of operation, and collapse. A finite element model is established for a 2.0 MW onshore wind turbine tower, and 25 strong earthquake records of a typical Class II site were selected for incremental dynamic analysis and Pushover analysis, and the dynamic response of the tower was obtained, and the seismic susceptibility curves of wind towers under the conditions of Class II sites were obtained after statistical analysis. And then a method was proposed to calculate the seismic susceptibility of the wind farm system based on the susceptibility of the wind tower and the booster station and the asset weights. In the context of a large onshore wind farm in Gansu, the overall susceptibility curve of a wind farm is obtained by calculation. The results show that most wind turbines operate normally during seismic activity. The probability of plasticity and collapse under a 2.0 g seismic event is less than 50%. While wind farms experience seismic action, when the PGA is 0.5g, the probability of wind farms being basically intact is 3%, the probability of minor damages occurring is about 27%, and the probability of severe damages is close to 70%. The probability of severe damages in the wind farm system increases faster in the interval of the PGA from 0.2 to 1.0 g. The probability of severe damages in the wind farm system increases faster in the interval of the PGA from 0.2 to 1.0g.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yixiang Hong
AU  - Zhenhui Wang
AU  - RuShan Liu
AU  - Huiquan Miao
AU  - Jinlong Liu
AU  - Meng Wu
PY  - 2024
DA  - 2024/06/30
TI  - Seismic Vulnerability of Onshore Wind Farms
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 812
EP  - 825
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_81
DO  - 10.2991/978-94-6463-449-5_81
ID  - Hong2024
ER  -