Back to Search
Start Over
Voltage Ratio Traceability of 10 kV Low-Voltage Excited Two-Stage Voltage Transformer
- Source :
- IEEE Transactions on Instrumentation and Measurement. 66:1405-1410
- Publication Year :
- 2017
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2017.
-
Abstract
- To establish a series of ppm-level high-voltage ratio standards up to 110 kV, we propose and have designed low-voltage-excitation two-stage voltage transformers (LVE-TSVTs) for high voltage. Ratio traceability for a 10 kV/100 V LVE-TSVT is vital in this scheme. This paper focuses on the voltage ratio traceability of the 10 kV LVE-TSVT by measuring the errors of the reference voltage and the voltage coefficient separately. A 1 kV double-TSVT with a 1 kV/100 V TSVT and a 100 V/10 V TSVT in cascade was developed and calibrated, and then was used to calibrate the error of the 10-kV LVE-TSVT at 10% rated voltage. The voltage coefficient was measured by comparing with a high-voltage capacitive divider through a current comparator bridge. The measurement was implemented in the range of 10%–120% rated voltage. The calibration results showed that the ratio errors of the 10-kV LVE-TSVT were less than $0.95 \times 10^{-6}$ in magnitude and $-1.26\,\,\mu $ rad in phase displacement at the 10% rated voltage. The expanded uncertainties are about $1.8 \times 10^{-6}$ in ratio and $2.2~\mu $ rad in phase, respectively, with coverage factor $k = 2$ .
- Subjects :
- Physics
Comparator
business.industry
020208 electrical & electronic engineering
Voltage divider
Electrical engineering
High voltage
02 engineering and technology
law.invention
law
0202 electrical engineering, electronic engineering, information engineering
Calibration
020201 artificial intelligence & image processing
Electrical and Electronic Engineering
Transformer
business
Instrumentation
Low voltage
Voltage reference
Voltage
Subjects
Details
- ISSN :
- 15579662 and 00189456
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Instrumentation and Measurement
- Accession number :
- edsair.doi...........e0a1ea6d2a1b9a488f8a3167ade6a9ba