Aero-elastic testing of multi-spanned transmission line subjected to downbursts

Amal Elawady; Haitham Aboshosha; Ashraf El Damatty; Girma Bitsuamlak; Horia Hangan; Ahmed Elatar

doi:10.1016/j.jweia.2017.07.010

Aero-elastic testing of multi-spanned transmission line subjected to downbursts

Amal Elawady, Haitham Aboshosha, Ashraf El Damatty, Girma Bitsuamlak, Horia Hangan, Ahmed Elatar

Research output: Contribution to journal › Article › peer-review

86 Scopus citations

Abstract

This paper reports the first aero-elastic test conducted under a scaled downburst wind field at the WindEEE dome facility at the University of Western Ontario, Canada. The main purpose of the test is to assess the dynamic response of a multi-span transmission line. The study starts by providing a characterization of the downburst wind field produced in WindEEE including a comparison with results of previously conducted numerical simulations. A number of test configurations, involving different locations of the downburst relative to the line, is considered. A decomposition approach is developed to separate between the resonant and the background components of the response. The results are presented in the form of a dynamic magnification factor that relates the peak response including the dynamic effect to the maximum quasi-static response. The test results show that the resonance contribution ranges between 5% and 10% of the peak response for the tower. They also show that the dynamic response of the conductors can reach up to 30% and 12% of the peak response at low and high downburst speeds, respectively.

Original language	English
Pages (from-to)	194-216
Number of pages	23
Journal	Journal of Wind Engineering and Industrial Aerodynamics
Volume	169
DOIs	https://doi.org/10.1016/j.jweia.2017.07.010
State	Published - Oct 2017
Externally published	Yes

Funding

The authors gratefully acknowledge Hydro One Inc., the Natural Sciences and Engineering Research Council of Canada (NSERC), and Ontario Center of Excellence OCE for the in-kind support, their collaboration, and for the financial support provided for this research. The authors also gratefully acknowledge the WindEEE Research Institute experts and technicians for their continuous assistance with the model-gauging, set-up, and testing. The authors also would like to thank the Boundary Layer Wind Tunnel Laboratory (BLWTL) for providing the force balance instrumentation and for their insightful comments in modeling the terrain exposure.

Funders	Funder number
Boundary Layer Wind Tunnel Laboratory
Hydro One Inc.
Ontario Center of Excellence OCE
Natural Sciences and Engineering Research Council of Canada

Keywords

Aero-elastic modeling
Cable
Downburst
High-intensity wind
Microburst
Resonance
Transmission line
Wind load
WindEEE

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10.1016/j.jweia.2017.07.010

Cite this

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title = "Aero-elastic testing of multi-spanned transmission line subjected to downbursts",

abstract = "This paper reports the first aero-elastic test conducted under a scaled downburst wind field at the WindEEE dome facility at the University of Western Ontario, Canada. The main purpose of the test is to assess the dynamic response of a multi-span transmission line. The study starts by providing a characterization of the downburst wind field produced in WindEEE including a comparison with results of previously conducted numerical simulations. A number of test configurations, involving different locations of the downburst relative to the line, is considered. A decomposition approach is developed to separate between the resonant and the background components of the response. The results are presented in the form of a dynamic magnification factor that relates the peak response including the dynamic effect to the maximum quasi-static response. The test results show that the resonance contribution ranges between 5% and 10% of the peak response for the tower. They also show that the dynamic response of the conductors can reach up to 30% and 12% of the peak response at low and high downburst speeds, respectively.",

keywords = "Aero-elastic modeling, Cable, Downburst, High-intensity wind, Microburst, Resonance, Transmission line, Wind load, WindEEE",

author = "Amal Elawady and Haitham Aboshosha and {El Damatty}, Ashraf and Girma Bitsuamlak and Horia Hangan and Ahmed Elatar",

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doi = "10.1016/j.jweia.2017.07.010",

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AU - Elawady, Amal

AU - Aboshosha, Haitham

AU - El Damatty, Ashraf

AU - Bitsuamlak, Girma

AU - Hangan, Horia

AU - Elatar, Ahmed

PY - 2017/10

Y1 - 2017/10

N2 - This paper reports the first aero-elastic test conducted under a scaled downburst wind field at the WindEEE dome facility at the University of Western Ontario, Canada. The main purpose of the test is to assess the dynamic response of a multi-span transmission line. The study starts by providing a characterization of the downburst wind field produced in WindEEE including a comparison with results of previously conducted numerical simulations. A number of test configurations, involving different locations of the downburst relative to the line, is considered. A decomposition approach is developed to separate between the resonant and the background components of the response. The results are presented in the form of a dynamic magnification factor that relates the peak response including the dynamic effect to the maximum quasi-static response. The test results show that the resonance contribution ranges between 5% and 10% of the peak response for the tower. They also show that the dynamic response of the conductors can reach up to 30% and 12% of the peak response at low and high downburst speeds, respectively.

AB - This paper reports the first aero-elastic test conducted under a scaled downburst wind field at the WindEEE dome facility at the University of Western Ontario, Canada. The main purpose of the test is to assess the dynamic response of a multi-span transmission line. The study starts by providing a characterization of the downburst wind field produced in WindEEE including a comparison with results of previously conducted numerical simulations. A number of test configurations, involving different locations of the downburst relative to the line, is considered. A decomposition approach is developed to separate between the resonant and the background components of the response. The results are presented in the form of a dynamic magnification factor that relates the peak response including the dynamic effect to the maximum quasi-static response. The test results show that the resonance contribution ranges between 5% and 10% of the peak response for the tower. They also show that the dynamic response of the conductors can reach up to 30% and 12% of the peak response at low and high downburst speeds, respectively.

KW - Aero-elastic modeling

KW - Cable

KW - Downburst

KW - High-intensity wind

KW - Microburst

KW - Resonance

KW - Transmission line

KW - Wind load

KW - WindEEE

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JO - Journal of Wind Engineering and Industrial Aerodynamics

JF - Journal of Wind Engineering and Industrial Aerodynamics

ER -

Aero-elastic testing of multi-spanned transmission line subjected to downbursts

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Keywords

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