Title :
Development and application of a portable multipurpose on-site/on-line PD measuring system
Author :
Meijer, Sander ; Zoetmulder, Robert G A ; Smit, Johan J. ; Groot, Edwin R S ; Judd, Martin D.
Author_Institution :
High Voltage Lab., Delft Univ. of Technol., Netherlands
Abstract :
Until recently periodic partial discharge measurements were done on a 150 kV SF6 gas insulated substation near Velsen in The Netherlands. These measurements have been performed conform the recommendations of the IEC 270. However, due to the load of the installation, it is almost impossible to take the GIS out of service to perform periodic measurements. Considering the position of the installation in the 150 kV grid no risks can be taken regarding the reliability of the installation for the rest of the technical lifetime. Moreover, failures in GIS can be preceded by partial discharge activity and therefore early detection can be helpful in determining the risk for failures. Therefore, a portable UHF measuring system has been developed for on-site/on-line testing of the GIS. Moreover, during the development of the portable PD measuring system, it has also been tested at oil- and air insulated systems. In this paper the used measuring system is described. The sensitivity of the measuring set-up has been checked as recommended by the CIGRE WG 15/33.03. Several examples from measurements obtained in the field show the different possible applications of the system
Keywords :
SF6 insulation; UHF measurement; gas insulated substations; insulation testing; partial discharge measurement; portable instruments; 150 kV; SF6; SF6 gas insulated substation; air insulated system; oil insulated system; on-line testing; on-site testing; partial discharge measurement; portable UHF system;
Conference_Titel :
Dielectric Materials, Measurements and Applications, 2000. Eighth International Conference on (IEE Conf. Publ. No. 473)
Conference_Location :
Edinburgh
Print_ISBN :
0-85296-730-6
DOI :
10.1049/cp:20000492
