US 9,810,728 B2
Voltage measuring device
Lionel Duvillaret, Chambery (FR); Gwenaël Gaborit, Saint Alban Leysse (FR); Frédéric Lecoche, Le Bourget-du-Lac (FR); Gilbert Schmitt, Poligny (FR); and Anne Grau, Ecuelles (FR)
Assigned to KAPTEOS, Le Bourget-du-Lac (FR); and ELECTRICITE DE FRANCE, Paris (FR)
Appl. No. 14/894,038
Filed by KAPTEOS, Le Bourget-du-Lac (FR); and ELECTRICITE DE FRANCE, Paris (FR)
PCT Filed May 28, 2014, PCT No. PCT/FR2014/051278
§ 371(c)(1), (2) Date Nov. 25, 2015,
PCT Pub. No. WO2014/191695, PCT Pub. Date Dec. 4, 2014.
Claims priority of application No. 13 54984 (FR), filed on May 31, 2013.
Prior Publication US 2016/0116517 A1, Apr. 28, 2016
Int. Cl. G01R 29/12 (2006.01); G01R 19/00 (2006.01); G01R 15/16 (2006.01)
CPC G01R 29/12 (2013.01) [G01R 15/165 (2013.01); G01R 19/0084 (2013.01); G01R 15/16 (2013.01); G01R 19/0061 (2013.01); G01R 19/0092 (2013.01)] 10 Claims
OG exemplary drawing
 
7. A device for measuring the voltage of at least one conductor of an electric power cable comprising:
an enclosure of a conductive material intended to be arranged around a portion of the cable and at least one electric field sensor intended to be arranged between the enclosure and the cable;
a source of a constant potential connected to the enclosure; and
a processing unit capable of determining said voltage based on the comparison of a measured electric field obtained with the electric field sensor with simulated electric fields produced by the electric field sensor, for a plurality of configurations of point electric charges within the cable.