Effective Length of Counterpoises Connected to Wind Turbine Foundation
| Autor: | Kazuo Yamamoto, Morioki Kose, Saki Tanaka, Shozo Sekioka, Yoshihiro Baba, Naoto Nagaoka |
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| Rok vydání: | 2021 |
| Předmět: |
Turbine blade
Ground 020209 energy Foundation (engineering) Energy Engineering and Power Technology 02 engineering and technology Effective length Earthing system Turbine law.invention Electromagnetic induction Lightning strike law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Geology Marine engineering |
| Zdroj: | IEEE Transactions on Power Delivery. 36:3956-3963 |
| ISSN: | 1937-4208 0885-8977 |
| Popis: | Many failures of wind turbine blades and electrical equipments due to powerful lightning strikes have occurred. The lightning-induced wind turbine failures that have occurred in recent years can be classified into two main categories. The first is a mechanical component failure. The second is a failure or malfunction of electric or electronic equipments inside or around the wind turbine due to an increase in the potential of the wind turbine grounding system or the electromagnetic induction caused by the lightning strike. In the latter case, the equipments often fail owing to the potential increase of the grounding system, the method of suppressing the potential rise by laying a ground wire vertically or horizontally to the wind turbine foundation is adopted. We propose an empirical expression for the effective length of horizontal grounding wires connected to a large grounding electrode such as a wind turbine foundation, and verify the expression using finite-difference time-domain (FDTD) method. |
| Databáze: | OpenAIRE |
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