Optimization of field grading for a 1000 KV wide-band voltage divider

Joni Klüss; Jari Hällström; Alf Peter Elg

doi:10.1016/j.elstat.2014.11.005

Optimization of field grading for a 1000 KV wide-band voltage divider

Joni Klüss, Jari Hällström, Alf Peter Elg

Research output: Contribution to journal › Article › Scientific › peer-review

8 Citations (Scopus)

Abstract

An HVDC reference voltage divider has been designed for high accuracy and wide-band measurements up to 1000kV. To maintain wide-band characteristics, field distribution must be optimized in order to minimize the response time of the divider. To compensate the stray capacitance, a capacitive path that surrounds the resistive reference divider is added to function as a shield. Optimal capacitance values producing a matched distribution are obtained using 3D FEM simulations. Factors affecting the performance of the divider are assessed by simulating multiple scenarios representing different practical considerations in real-life applications.

Original language	English
Pages (from-to)	140-150
Number of pages	11
Journal	Journal of Electrostatics
Volume	73
DOIs	https://doi.org/10.1016/j.elstat.2014.11.005
Publication status	Published - Feb 2015
MoE publication type	A1 Journal article-refereed

Keywords

Electromagnetic fields
Finite element methods
HVDC transmission
Voltage dividers
Voltage measurement

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abstract = "An HVDC reference voltage divider has been designed for high accuracy and wide-band measurements up to 1000kV. To maintain wide-band characteristics, field distribution must be optimized in order to minimize the response time of the divider. To compensate the stray capacitance, a capacitive path that surrounds the resistive reference divider is added to function as a shield. Optimal capacitance values producing a matched distribution are obtained using 3D FEM simulations. Factors affecting the performance of the divider are assessed by simulating multiple scenarios representing different practical considerations in real-life applications.",

keywords = "Electromagnetic fields, Finite element methods, HVDC transmission, Voltage dividers, Voltage measurement",

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AU - Hällström, Jari

AU - Elg, Alf Peter

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N2 - An HVDC reference voltage divider has been designed for high accuracy and wide-band measurements up to 1000kV. To maintain wide-band characteristics, field distribution must be optimized in order to minimize the response time of the divider. To compensate the stray capacitance, a capacitive path that surrounds the resistive reference divider is added to function as a shield. Optimal capacitance values producing a matched distribution are obtained using 3D FEM simulations. Factors affecting the performance of the divider are assessed by simulating multiple scenarios representing different practical considerations in real-life applications.

AB - An HVDC reference voltage divider has been designed for high accuracy and wide-band measurements up to 1000kV. To maintain wide-band characteristics, field distribution must be optimized in order to minimize the response time of the divider. To compensate the stray capacitance, a capacitive path that surrounds the resistive reference divider is added to function as a shield. Optimal capacitance values producing a matched distribution are obtained using 3D FEM simulations. Factors affecting the performance of the divider are assessed by simulating multiple scenarios representing different practical considerations in real-life applications.

KW - Electromagnetic fields

KW - Finite element methods

KW - HVDC transmission

KW - Voltage dividers

KW - Voltage measurement

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EP - 150

JO - Journal of Electrostatics

JF - Journal of Electrostatics

SN - 0304-3886

ER -

Optimization of field grading for a 1000 KV wide-band voltage divider

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Keywords

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