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A Novel Calibration Method in the Presence of Space Charge in Dielectric Materials Using the Pulsed Electroacoustic Technique

Chen, G, Chong, Y L and Fu, M (2006) A Novel Calibration Method in the Presence of Space Charge in Dielectric Materials Using the Pulsed Electroacoustic Technique At 8th Internaional Conference on Properties and Applications of Dielectric Materials, Indonesia. 26 - 30 Jun 2006. , pp. 289-292.

Record type: Conference or Workshop Item (Paper)

Abstract

Calibration is an important part of procedures to accurate measurements of space charge in solid dielectrics. The pulsed electroacoustic (PEA) technique is one of the mostly used techniques due to its simplicity in construction, low cost and easy to implement for both plaque and cable samples. A novel method has been proposed which enables the PEA technique to be used in the presence of space charge. It is based on two measurements. Firstly, the sample with the presence of charge is measured without any applied voltage. The second measurement is carried out with a small dc applied voltage. The applied voltage should be small enough so there is no disturbance on the existing charge in the sample. The difference of the two measurements can be used for calibration. The additional advantage of the proposed method avoids the influence of the pulse voltage on calibration. A 200 µm LDPE sample was stressed at 8 kV for 60 minutes to produce a significant amount of charge in the sample. The proposed method has been used to calculate the residual charge and the result has been compared with the conventional method.

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More information

Published date: 2006
Additional Information: Event Dates: 26 - 30 June, 2006
Venue - Dates: 8th Internaional Conference on Properties and Applications of Dielectric Materials, Indonesia, 2006-06-26 - 2006-06-30
Keywords: Space charge calibration, PEA technique, trapped charge
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 262939
URI: http://eprints.soton.ac.uk/id/eprint/262939
ISBN: 1-4244-0190-9
PURE UUID: fbe70bd0-bb55-4a76-bd7e-2a94f88e758e

Catalogue record

Date deposited: 04 Sep 2006
Last modified: 18 Jul 2017 08:46

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Contributors

Author: G Chen
Author: Y L Chong
Author: M Fu

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