A fiber optic powered sensor designed for partial discharges monitoring on high voltage bushings

In this work, we present the results of a fiber optic powered sensor for monitoring partial discharges on high voltage transformer bushings. The main advantages of the proposed system are high bandwidth, passivity, flexibility, non-intrusive, human and equipment risk free, easy installation and inherently galvanic isolation. The complete system is composed by the sensor that is one active hermetically sealed circular antenna installed near to the bushing flange, a fiber network and a control unit. The sensor is powered only by the optical power provided by one optic fiber connected to a remote optical source. At the same time, the partial discharge signals are transmitted by another optical fiber to the control unit installed in the substation room. We describe the design and the performance evaluation of the fiber optic powered antenna in laboratory.

[1]  E. Gulski,et al.  On-line PD detection, requirements for practical use , 2002, Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316).

[2]  L. Renforth,et al.  A new technique for the remote partial discharge monitoring of the stator insulation of high-voltage motors located in “Ex” (hazardous) locations , 2012, 2012 Petroleum and Chemical Industry Conference (PCIC).

[3]  M. Melo,et al.  Experience with on-line monitoring of capacitance and tangent delta of condensive bushings , 2008, 2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America.

[4]  J. G. Werthen,et al.  Current measurements using optical power , 1996, Proceedings of 1996 Transmission and Distribution Conference and Exposition.

[5]  Indera Arifianto,et al.  High voltage transformer bushing problems , 2011, Proceedings of the 2011 International Conference on Electrical Engineering and Informatics.

[6]  H. Muto,et al.  Detecting characteristics of various type antennas on partial discharge electromagnetic wave radiating through insulating spacer in gas insulated switchgear , 2009, IEEE Transactions on Dielectrics and Electrical Insulation.

[7]  Ludger Overmeyer,et al.  Power Transmission by Optical Fibers for Component Inherent Communication , 2010 .

[8]  J B Rosolem,et al.  Field and Laboratory Demonstration of a Fiber-Optic/RF Partial Discharges Monitoring System for Hydrogenerators Applications , 2010, IEEE Transactions on Energy Conversion.

[9]  Masayoshi Tanaka,et al.  Electromagnetic waves from partial discharges and their detection using patch antenna , 2010, IEEE Transactions on Dielectrics and Electrical Insulation.