Traceability and Characterization of a 1000 kV HVDC Reference Divider

Author

Elg, Alf-Peter ; Bergman, Anders ; Hallstrom, Jari ; Kharezy, Mohammad ; Nieminen, Tatu

Author_Institution

SP Tech. Res. Inst. of Sweden, Boras, Sweden

Volume

64

Issue

6

fYear

2015

fDate

Jun-15

Firstpage

1709

Lastpage

1715

Abstract

This paper presents the characterization of a resistive high-voltage dc (HVDC) reference divider and methods to establish traceability. The divider is designed for use as a laboratory reference for calibration of HVDC measuring systems up to 1000 kV. Targeting a measurement uncertainty of 20 μV/V at full voltage has put a focus on the temperature coefficients of the resistors, elimination of humidity dependence, and control of leakage currents in the high-voltage arm. A scale factor calibration against a 50 kV divider at 10 kV leads to an expanded uncertainty of 15 μV/V.

Keywords

calibration; electric current control; electric current measurement; leakage currents; measurement uncertainty; reference circuits; resistors; voltage dividers; HVDC measuring system; HVDC reference divider; high-voltage arm; humidity dependence; leakage current control; measurement uncertainty; resistive high-voltage DC reference divider; scale factor calibration; voltage 10 kV; voltage 1000 kV; voltage 50 kV; Calibration; HVDC transmission; Measurement uncertainty; Resistance; Resistors; Uncertainty; Voltage measurement; High-voltage dc (HVDC) transmission; high-voltage techniques; measurement standards; uncertainty; voltage dividers; voltage dividers.;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2015.2410373

Filename

7100891