Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
The Design and Characterization of a Prototype Wideband Voltage Sensor Based on a Resistive Divider
Year:2017
Research Areas
  • Electric engineering
Information
Abstract
The most important advantage of voltage dividers over traditional voltage transformers is that voltage dividers do not have an iron core with non-linear hysteresis characteristics. The voltage dividers have a linear behavior with respect to over-voltages and a flat frequency response larger frequency range. The weak point of a voltage divider is the influence of external high-voltage (HV) and earth parts in its vicinity. Electrical fields arising from high voltages in neighboring phases and from ground conductors and structures are one of their main sources for systematic measurement errors. This paper describes a shielding voltage divider for a 24 kV medium voltage network insulated in SF6 composed of two resistive-capacitive dividers, one integrated within the other, achieving a flat frequency response up to 10 kHz for ratio error and up to 5 kHz for phase displacement error. The metal shielding improves its immunity against electric and magnetic fields. The characterization performed on the built-in voltage sensor shows an accuracy class of 0.2 for a frequency range from 20 Hz to 5 kHz and a class of 0.5 for 1 Hz up to 20 Hz. A low temperature effect is also achieved for operation conditions of MV power grids.
International
Si
JCR
Si
Title
Sensors
ISBN
1424-8220
Impact factor JCR
2,677
Impact info
Volume
17
10.3390/s17112657
Journal number
From page
1
To page
11
Month
NOVIEMBRE
Ranking
10/58
Participants
  • Autor: Fernando Garnacho Vecino (UPM)
  • Autor: Abderrahim Khamlichi El Khamlichi (UPM)
  • Autor: Jorge Rovira (FFII)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Redes e instalaciones de baja y alta tensión
  • Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)