A Development of a Capacitive Voltage Divider for High Voltage Measurement as Part of a Combined Current and Voltage Sensor - Publication - MOST Wiedzy

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A Development of a Capacitive Voltage Divider for High Voltage Measurement as Part of a Combined Current and Voltage Sensor

Abstract

This article deals with the development of capacitive voltage divider for high voltage measurements and presents a method of analysis and optimization of its parameters. This divider is a part of a combined voltage and current sensor for measurements in high voltage power networks. The sensor allows continuous monitoring of the network distribution status and performs a quick diagnosis and location of possible network failures. Deployment of these devices will support semi-autonomous control of power networks and it can be considered as a step from traditional power grids toward smart grids. This is a worldwide trend connected with increasing number of renewable energy sources and plug-in electric vehicles as described in. In this way, it contributes to the reliability of the distribution network. Together with automated control techniques and fault location methods, it enables its self-healing capability. The following characteristics required for the sensor include: current measurement error up to 2 %, voltage measurement error up to 0.5 %, and power measurement error up to 5 %. At the same time, it is necessary that the sensor is cost-effective - relatively cheap. There were selected capacitors made in series production for the capacitive divider designing. The capacitive voltage divider was tested in terms of time and temperature stability; the results are described in the paper. Then, the method of mathematical correction of a temperature dependence of the capacitive voltage divider was suggested and tested.

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Authors (6)

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
Elektronika Ir Elektrotechnika no. 26, pages 25 - 31,
ISSN: 1392-1215
Language:
English
Publication year:
2020
Bibliographic description:
Hrbac R., Kolar V., Bartłomiejczyk M., Mlcak T., Orsag P., Vanc J.: A Development of a Capacitive Voltage Divider for High Voltage Measurement as Part of a Combined Current and Voltage Sensor// Elektronika Ir Elektrotechnika -Vol. 26,iss. 4 (2020), s.25-31
DOI:
Digital Object Identifier (open in new tab) 10.5755/j01.eie.26.4.25888
Verified by:
Gdańsk University of Technology

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