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http://dx.doi.org/10.5207/JIEIE.2007.21.1.052

Design and Fabrication of a Field Mill for Ground-Level Electric Field Measurement  

Kil, Gyung-Suk (한국해양대학교 전기전자공학부)
Song, Jae-Yong (한국해양대학교 산업기술연구소)
Kim, Il-Kwon (한국해양대학교 대학원 전기공학과)
Kwon, Jang-Woo (동명대학교 컴퓨터공학과)
Ahn, Chang-Hwan (인하공업전문대학 디지털전자정보과)
Lee, Young-Keun (기술표준원 IEC/TC81)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.21, no.1, 2007 , pp. 52-59 More about this Journal
Abstract
A field mill capable of measuring the magnitude and polarity of electric fields at the ground level was studied to apply to a lightning warning system as a sensor. We designed and fabricated a planar-shutter type field mill with a rotating-vanes. A calibration of the field mill was performed in a vertically symmetrical arrangement which consists of two equal size parallel round plates to form a homogeneous electrical fields. The sensitivity of the field mill was adjusted at 0.5[V/kV/m], and this covers a ranges from 200[V/m] to 20[kV/m]. After the calibration experiment, the field mill was installed on the roof of a building to measure the changes of electric field intensity caused by thunderclouds. During the period from July 1. 2006 to July 15. 2006, the electric field intensity was recorded a ranges of $+2[kV/m]{\sim}-6[kV/m]$ depending on generation, extinction and movement of thunderclouds. From the actual test on the ground it is confirmed that the field mill has a good performance necessary for the measurement of DC electric fields.
Keywords
Field Mill; Electric Fields; Lightning Warning System; Planar-Shutter Type; Thunderdouds;
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