Enhancement of AC high voltage measurements’ uncertainty using a high voltage divider calibration method

Abstract

Abstract. This paper discusses enhancing of the measurements' uncertainty for AC high voltage up to 100 kV. This is achieved by using a high voltage divider calibration method. Voltage measurements have been carried out at the Egyptian national institute for standards (NIS), using a high voltage measuring system (Phenix-KVM100), that consists of a high voltage divider and a voltage display. The voltage divider and display have been calibrated in low and high voltage ranges. Reference standard digital voltmeter and a multifunction calibrator have been used to calibrate the KVM100 for achieving accurate and traceable results. All calibrations have been performed automatically using Laboratory Virtual Instrument Engineering Workbench (LabVIEW) programs specially designed for this task. Uncertainty budget has been evaluated to get the measurements' expanded uncertainties.

RETRACTED: Traceability of DC and AC high voltage measurements using voltage divider calibration

“…However, their impacts on the uncertainty budget are insignificant compared to the dominant factors used in this work. 4,9 Tables 5 and 6 show the uncertainty budgets for the 200 kV DC and AC calibrations, respectively.…”

“…However, their impacts on the uncertainty budget are insignificant compared to the dominant factors used in this work. 4,9 Tables 5 and 6 show the uncertainty budgets for the 200 kV DC and AC calibrations, respectively. The final calibration results of the 200 kV system with their expanded uncertainties in both volts and percentages for the DC and AC modes are listed in Tables 7 and 8, respectively.…”

“…[9][10][11] Traceability of DC and AC voltage measurements up to 100 kV was previously achieved at the National Institute of Standards (NIS) via a DC-JVS. 4,9 In the studies presented by El-Rifaie et al 4 and Abdel Mageed et al, 9 uncertainties in DC and AC high voltage measurements up to 100 kV were significantly enhanced after achieving traceability with the JVS.…”

“…3 This is achieved by reducing the high voltage to a lower value that can be measured with a voltmeter. 4 The most commonly used method to calibrate the division ratio is to obtain the ratio between actual voltages on the high voltage and low voltage arms of the divider. [5][6][7] In other words, the true voltage values of a high voltage source are obtained by multiplication of the voltages on the low voltage arm with the ratio of the division.…”

State of the Art on High Voltage Metrology: Past, Present and Future

“…The last setup is calibrating a 200 kV AC high voltage measuring system by means of the two calibrated capacitors according to IEC 60060-2:2010 international standard [73]. AC High voltage source is utilized to supply the high voltage side in all calibration setups [74,75].…”