Effective length of vertical grounding wires connected to wind turbine foundation. Issue 1 (1st January 2017)

• Record Type: Journal Article
• Authors: Miyamoto, Saki; Baba, Yoshihiro; Nagaoka, Naoto; Yamamoto, Kazuo
• Is Part Of: Journal of International Council on Electrical Engineering. Volume 7:Issue 1(2017)
• Page Start: 89
• Page End: 95
• Publication Date: 2017-01-01
• Subjects: Effective length -- grounding wire -- wind turbine -- FDTD method -- grounding -- lightning; Electrical engineering -- Periodicals; Electrical engineering; Periodicals; 621.3
• DOI: 10.1080/22348972.2017.1324272
• Languages: English
• ISSNs: 2233-5951

Abstract

Abstract: Wind turbines are frequently struck by lightning. One of the important and effective measures is to reduce the grounding impedance of wind turbine. For the reduction of grounding impedance, vertical and/or horizontal conductors are additionally buried and connected to the foundation. It has been reported that there is a certain length of grounding conductor, beyond which the part of the grounding conductor is ineffective. This is called 'effective length'. In this paper, the effective length of a vertical grounding conductor is investigated through simulations using the Finite-Difference Time-Domain method.