Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement

Lightning, which is also known as the separation of electrical charges in atmosphere, performs energetic discharge. Monitoring of the atmospheric electric field (AEF) helps to provide precaution against the risks of lightning. The rotating electric field mill (REFM) is a sensor used in measuring AEF...

Full description

Saved in:

Bibliographic Details
Main Author:	Shahroom, Hamizah
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/54083/1/HamizahShahroomMFKE2015.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.54083
record_format	uketd_dc
spelling	my-utm-ep.540832020-10-20T01:36:00Z Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement 2015-09 Shahroom, Hamizah TK Electrical engineering. Electronics Nuclear engineering Lightning, which is also known as the separation of electrical charges in atmosphere, performs energetic discharge. Monitoring of the atmospheric electric field (AEF) helps to provide precaution against the risks of lightning. The rotating electric field mill (REFM) is a sensor used in measuring AEF. For long-term research, REFM should be modified based on several criteria to improve its effectiveness, cost efficiency and functionality. Studies on the applications of several sensor materials on the performance of REFM are limited. The current research’s purpose is to improve REFM as AEF sensor. Furthermore, this research aims to identify the ability of REFM to capture lightning impulses and to track thundercloud development processes and movements. REFM comprises of signal processing circuit (consisting of amplification unit, filtering, conversion and signal conditioning unit) for establishing connection to data acquisition equipment in order to display, collect and analyse data. The calibration and HV impulse experiment have been conducted to this REFM. Moreover, the materials used to develop REFM sensor were mainly made from aluminium or stainless steel. Therefore, an investigation on different materials of REFM rotor and stator was performed to examine their sensitivity and stability towards the high voltage atmosphere. In addition, in order to investigate the characteristics of the signal obtained from a thunderstorm cloud prior to cloud ground lightning discharges, the REFM was installed in an open area. The calibration results showed that the aluminium sensor is more suitable for AEF measurement compared to the stainless steel sensor. The data collected on-site revealed the characteristics of the signals of AEF in the atmosphere as well as the characteristics of the signal from a thunderstorm cloud prior to cloud ground lightning discharges. This research introduced a new design of REFM which offers a reduction of up to one-third of the regular cost of the commercial REFM. 2015-09 Thesis http://eprints.utm.my/id/eprint/54083/ http://eprints.utm.my/id/eprint/54083/1/HamizahShahroomMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86190 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Shahroom, Hamizah Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
description	Lightning, which is also known as the separation of electrical charges in atmosphere, performs energetic discharge. Monitoring of the atmospheric electric field (AEF) helps to provide precaution against the risks of lightning. The rotating electric field mill (REFM) is a sensor used in measuring AEF. For long-term research, REFM should be modified based on several criteria to improve its effectiveness, cost efficiency and functionality. Studies on the applications of several sensor materials on the performance of REFM are limited. The current research’s purpose is to improve REFM as AEF sensor. Furthermore, this research aims to identify the ability of REFM to capture lightning impulses and to track thundercloud development processes and movements. REFM comprises of signal processing circuit (consisting of amplification unit, filtering, conversion and signal conditioning unit) for establishing connection to data acquisition equipment in order to display, collect and analyse data. The calibration and HV impulse experiment have been conducted to this REFM. Moreover, the materials used to develop REFM sensor were mainly made from aluminium or stainless steel. Therefore, an investigation on different materials of REFM rotor and stator was performed to examine their sensitivity and stability towards the high voltage atmosphere. In addition, in order to investigate the characteristics of the signal obtained from a thunderstorm cloud prior to cloud ground lightning discharges, the REFM was installed in an open area. The calibration results showed that the aluminium sensor is more suitable for AEF measurement compared to the stainless steel sensor. The data collected on-site revealed the characteristics of the signals of AEF in the atmosphere as well as the characteristics of the signal from a thunderstorm cloud prior to cloud ground lightning discharges. This research introduced a new design of REFM which offers a reduction of up to one-third of the regular cost of the commercial REFM.
format	Thesis
qualification_level	Master's degree
author	Shahroom, Hamizah
author_facet	Shahroom, Hamizah
author_sort	Shahroom, Hamizah
title	Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
title_short	Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
title_full	Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
title_fullStr	Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
title_full_unstemmed	Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
title_sort	improvement on system and components of a rotating electric field mill for atmospheric electric field measurement
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/54083/1/HamizahShahroomMFKE2015.pdf
_version_	1747817681408491520

Improvement on system and components of a rotating electric field mill for atmospheric electric field measurement

Similar Items