Thiago L. Prata

Federal University of Pernambuco, Arrecife, Pernambuco, Brazil

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Publications (2)1.66 Total impact

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    ABSTRACT: Abstract—This paper describes the design and development of a sensor system network for remote monitoring of the state of pollution on high-voltage insulators, its deployment among four states in Northeast Brazil and preliminary analysis of the data gathered by the system. Six monitoring units, each composed by leakage current, humidity, and temperature sensors, an electronic processing module, and a satellite-communication link, were built and installed on 230- and 500-kV transmission towers. Measured data are sent by the different systems via satellite to a database controlled by a web-based graphical user interface, incorporated into the supervision-management system of the electric utility company. Sample field results on one of the sensor systems, both for short- and long-term measurements, show a direct correlation of the activity recorded by the system with the pollution level expected to occur near the corresponding monitoring point.
    IEEE Transactions on Power Delivery 04/2012; 27(2):953-962. DOI:10.1109/TPWRD.2012.2183623 · 1.66 Impact Factor
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    ABSTRACT: Leakage current monitoring is a promising method of indirect estimation of pollution levels on insulators strings of high voltage transmission lines. This paper describes the development of a complete real time leakage current monitoring sensor system. This system is composed of an optical sensor with a fiber link, a processing microcontrolled module, a satellite link and a solar panel with battery. The most important characteristics obtained from the leakage current signal are internally stored in the PIC16F877A microcontroller and transmitted through the satellite communication link. The information is downloaded from the website of the satellite link provider and inserted in a database with a web-based graphical user interface.
    Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International; 12/2009