Title :
An innovative method for voltage measurement: applications up to 550 kV GIS
Author :
Dupraz, J.P. ; Montillet, G.F.
Author_Institution :
ALSTOM T & D S.A., Villeurbanne, France
Abstract :
Extraordinary progress in digital technologies (increased level of integration, drop in prices) during the last five years has made it possible to industrialize and use alternative electronic solutions instead of the conventional inductive type instrument transformers. Electronic solutions seem to be the answer for several types of applications and particularly for gas insulated substations (GIS). This paper lists the basic technical equations of this sensor, its principle and the influences of gas density drifts, trapped charges and bus bar eccentricity, and its advantages due to the concept. The tests performed are described, and some applications of this electronic solution in today´s substations are listed.
Keywords :
gas insulated substations; instrument transformers; potential transformers; voltage measurement; 550 kV; bus bar eccentricity; capacitive electronic voltage transformer; digital technologies; gas density drifts; gas insulated substations; trapped charges; voltage measurement; voltage sensors; Electrical equipment industry; Electronics industry; Equations; Gas insulation; Geographic Information Systems; Industrial electronics; Instrument transformers; Power transformer insulation; Substations; Voltage measurement;
Conference_Titel :
Transmission and Distribution Conference and Exposition, 2003 IEEE PES
Print_ISBN :
0-7803-8110-6
DOI :
10.1109/TDC.2003.1335317
