A frequency dependent circuit model of a wind turbine tower using transient response calculeted by FDTD

Author

Ikeda, Yoki ; Nagaoka, Naoto ; Baba, Y. Oshihiro ; Ametani, Akihiro

Author_Institution

Fac. of Sci. & Eng., Doshisha Univ., Kyotanabe, Japan

fYear

2012

fDate

2-7 Sept. 2012

Firstpage

1

Lastpage

6

Abstract

A method synthesizing a frequency-dependent equivalent model of a wind turbine tower for a circuit analysis is proposed in this paper. The model is derived from a transient response calculated by the Finite-Difference Time-Domain (FDTD) method. The FDTD method, which is one of electromagnetic field analysis methods, gives an accurate voltage and current responses including configurations of the tower and grounding electrode. The transient response is approximated in a time domain, and the result is converted to parameters of the Semlyen line model of the Electro-Magnetic Transients Program (EMTP). Pade method in z-domain is employed to automate the approximation. Once the transient response is represented by the equivalent circuit, transient analysis of the tower can be carried out without the time-consuming field analysis method.

Keywords

EMTP; earthing; electromagnetic fields; equivalent circuits; finite difference time-domain analysis; network analysis; transient response; wind turbines; EMTP; FDTD method; Pade method; Semlyen line model; circuit analysis; current responses; electromagnetic field analysis methods; electromagnetic transients program; equivalent circuit; finite-difference time-domain method; frequency dependent circuit model; frequency-dependent equivalent model; grounding electrode; time domain approximation; time-consuming field analysis method; transient analysis; transient response; voltage responses; wind turbine tower; z-domain; EMTP; Finite difference methods; Grounding; Impedance; Time domain analysis; Time frequency analysis; EMTP; FDTD method; Frequency-dependent model; Wind turbine tower;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2012 International Conference on

Conference_Location

Vienna

Print_ISBN

978-1-4673-1898-3

Electronic_ISBN

978-1-4673-1896-9

Type

conf

DOI

10.1109/ICLP.2012.6344304

Filename

6344304