DocumentCode :
2629421
Title :
Wind turbine grounding system frequency-dependent modeling for lightning transient studies
Author :
Kazemi, R. ; Sheshyekani, K. ; Sadeghi, S. H R ; Moini, R. ; Nasiri, A.
Author_Institution :
Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran
fYear :
2012
fDate :
25-28 Oct. 2012
Firstpage :
1178
Lastpage :
1182
Abstract :
This paper presents an accurate modeling technique for inclusion of the frequency-dependent characteristics of a wind turbine grounding system into time-domain codes for lightning transient studies. In this technique, first, the frequency response of grounding system is determined using an electromagnetic approach based on the method-of-moment solutions of the governing Maxwell´s equations. A time-domain state-space model of the resultant frequency response of the grounding system is then obtained by making use of the vector fitting technique. The proposed technique is used to analyze the effects of wide-band modeling of grounding system on predicted lightning transient overvoltages in a typical wind power plant. It is shown that the predicted overvoltage by the conventional resistive model of the grounding system gives an underestimation of those obtained accurately using the proposed model.
Keywords :
Maxwell equations; lightning protection; method of moments; time-domain analysis; wind power plants; wind turbines; Maxwell equations; electromagnetic approach; frequency response; lightning transient overvoltages; lightning transient studies; method-of-moment solutions; time-domain codes; time-domain state-space model; vector fitting technique; wide-band modeling effects; wind power plant; wind turbine grounding system frequency-dependent modeling; Conductors; Electromagnetics; Poles and towers; Presses;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Montreal, QC
ISSN :
1553-572X
Print_ISBN :
978-1-4673-2419-9
Electronic_ISBN :
1553-572X
Type :
conf
DOI :
10.1109/IECON.2012.6388604
Filename :
6388604
Link To Document :
بازگشت