Propagation measurements and modeling for monitoring and tracking in animal husbandry applications

2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

et al. 2014

Partial discharge (PD) measurement is an established high voltage insulation monitoring technique used to facilitate the detection of incipient faults in high voltage apparatus. Based on the great importance of the power system, is constant the research about the nature and characteristics of PD sources. A low-cost, free-standing, radiometric, partial discharge wireless sensor network (PD WSN) is described for application to realtime condition monitoring, asset management and operations optimization in the future smart grid. The proposed PD WSN is based on a novel approach to PD location which obviates the need for synchronization between sensors thereby improving scalability. In this paper, the progress in the development of a PD WSN prototype is described. For the proposed evaluation of PD signals, several measurements were performed using a diskcone antenna and a commercial system based on the IEC 60270 standard. Early progress in the development of components for a PD detection system using a network of free-standing radiometers for monitoring of electricity substations has been also presented.

Section: Visionmentioning

confidence: 99%

An envelope detector as a trading cost technique for radiometric partial discharge detection

2014 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

et al. 2014

“…For ranges beyond those producing interference fringes due to direct and ground reflected paths the propagation index over a perfect ground-plane is 4 corresponding to a transmission loss of 12 dB/octave. The transmission-loss law can be inverted (as in [9]) to give an estimate of the ratio of distances from a PD source to any two radiometers. A PD source detected by three or more radiometers can therefore be located from the intersection of loci.…”

Section: Operating Principlesmentioning

confidence: 99%

Development of a partial discharge emulator for calibration of a radiometric PD detection system

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings

Cavalcanti

et al. 2012

Self Cite

A purely electronic partial discharge emulator for use in a location estimation algorithm for online partial discharge detection is proposed as a low-cost approach to real-time condition monitoring, asset management and operation optimization in future smart grid. Some early progress in the development of subsystems (specifically the radiometer antenna and PD emulator) for a proof-of-principle prototype system are described.

“…The proposed location method is based on a variation of the path-loss inversion [2] used by the authors in an animal tracking application. In the substation environment, the pathloss law is both unknown and generally different for the path from the PD source to each sensor, so range cannot be estimated from a single power measurement.…”

Section: Visionmentioning

confidence: 99%

Early progress in the development of a radiometric PD location system

2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings

Batista

et al. 2012

Self Cite

A low-cost, free-standing, radiometric, partial discharge wireless sensor network (PD WSN) is described for application to real-time condition monitoring, asset management and operations optimization in the future smart grid. The proposed PD WSN uses a novel approach to PD location which obviates the need for synchronization between sensors thereby improving scalability. Progress in the development of several components for a prototype PD WSN is described.