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On-line PD monitoring system for MV cable connections with weak spot location

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2 Author(s)
van der Wielen, P.C.J.M. ; T&D Testing Services, KEMA Nederland B.V., Arnhem ; Steennis, E.F.

A unique measuring system is presented for the online monitoring of partial discharges (PDs) in medium-voltage power cables. The system is able to locate the origin(s) of PDs by using two inductive sensors, each at one cable end. The measuring system is called PD-OL, which stands for PD detection on-line with location. A pulse injection system is used for the time synchronization of the data intake at both cable ends and for the on-line calibration. The control center at KEMA collects data from all the PD-OL measuring systems for final presentation and interpretation, which can be made visible on a secured Web-site for the network owners. This paper discusses the basics of PD-OL and some first measurement results.

Published in:

Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE

Date of Conference:

20-24 July 2008