A Real-Time Smart Sensor for High-Resolution Frequency Estimation in Power Systems

Sensors

David Granados-Lieberman²  Rene J. Romero-Troncoso²  Eduardo Cabal-Yepez²  Roque A. Osornio-Rios¹ 

[1] Facultad de Ingeniería, Campus San Juan del Río, Universidad Autónoma de Querétaro / Río Moctezuma 249, Col. San Cayetano, 76807 San Juan del Río, Querétaro, Mexico; E-Mail:;HSPdigital Research Group, División de Ingenierías, Campus Irapuato-Salamanca, Universidad de Guanajuato / Carr. Salamanca-Valle km 3.5+1.8, Comunidad de Palo Blanco, 36700 Salamanca, Guanajuato, Mexico; E-Mails:

关键词: smart sensor;    frequency estimation;    chirp z-transform;    high resolution;    power systems;   

DOI  :  10.3390/s90907412

来源: mdpi

【 摘 要 】

Power quality monitoring is a theme in vogue and accurate frequency measurement of the power line is a major issue. This problem is particularly relevant for power generating systems since the generated signal must comply with restrictive standards. The novelty of this work is the development of a smart sensor for real-time high-resolution frequency measurement in accordance with international standards for power quality monitoring. The proposed smart sensor utilizes commercially available current clamp, hall-effect sensor or resistor as primary sensor. The signal processing is carried out through the chirp z-transform. Simulations and experimental results show the efficiency of the proposed smart sensor.

【 授权许可】

CC BY   
© 2009 by the authors; licensee MDPI, Basel, Switzerland