Abstract
The report describes the methods used and results of a
characterization of the voltage non-linearity of a 1200
kV HVDC divider at Aalto University high voltage
laboratory. Measurements were performed in April 2012 and
June 2013. Historical data from 1990 and 2007 were
combined with new measurement results to gain good
understanding of the voltage dependence and its reasons.
The new more precise measurements confirm the findings of
the 2007 measurements. The results show that the scale
factor of the divider has a linear relative voltage
dependence of -0.2 %/MV. It was also found that the
oil-filled high voltage resistors have a thermal time
constant of several hours.
| Original language | English |
|---|---|
| Place of Publication | Espoo |
| Publisher | Centre of Metrology and Accreditation (MIKES) |
| Number of pages | 16 |
| ISBN (Print) | 978-952-6682-08-2 |
| Publication status | Published - 2013 |
| MoE publication type | D4 Published development or research report or study |
Publication series
| Series | MIKES Publication |
|---|---|
| Number | J2/2013 |
| ISSN | 1235-5704 |
Keywords
- voltage measurements
- HVDC dividers