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Ultra-high-frequency (UHF) sensor is the vital component of a partial discharge detection system and its coupling performance is affected by structural parameters. On the basis of the cavity model theory, this paper studied the influence of the disc electrode diameter, the thickness, the dielectric constant of the dielectric substrate, and the position of the coaxial connection on the performance...
Reprogramming is essential to wireless sensor networks. Current research in reprogramming is almost based on update function of all nodes in a network, the nodes in target area do special task is seldom discussed. In this paper we proposed a reprogramming scheme to transmit code image to target nodes, and implement an effective route algorithm in reprogramming scheme. Then we compared our approach...
Studying the characteristics of partial discharge development is conducive to make an accurate assessment of the severity of discharges and give a reasonable maintenance strategy for the equipment. Point discharge is a typical failure discharge fault occurred in GIS equipment, the differences of the characteristics of the PRPD patterns produced by UHF partial discharge enveloped signals in different...
Ultra-Wideband (UWB) RF partial discharge (PD) location technique is a new method for PD sources location in power transformers, which is based on multiple sensors array detection and Huygens-Fresnel principle of PD electromagnetic radiation signal. In this paper, a classification algorithm of multi-PD sources has been proposed, which is based on dynamic search in the TDOA (time difference of arrival)...
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