Artículos de revistas
Tap-Off Power From the Overhead Shield Wires of an HV Transmission Line
Fecha
2012Registro en:
IEEE TRANSACTIONS ON POWER DELIVERY, PISCATAWAY, v. 27, n. 2, supl. 4, Part 1, pp. 986-992, APR, 2012
0885-8977
10.1109/TPWRD.2012.2185253
Autor
Vasquez-Arnez, Ricardo Leon
Masuda, Mario
Jardini, Jose Antonio
Kaiser, Walter
Nicodem, Erni Jose Vitorino
Institución
Resumen
In recent years, there was an increase of ancillary service loads, such as signaling systems, inspection robots, surveillance cameras, and other monitoring devices distributed along high-voltage transmission lines which require low-power dc voltage supplies. This paper investigates the use of the induced voltage in the shield wires of an overhead 525 kV transmission line as a primary power source. Since phase current variations throughout the day affect the induced voltage in the overhead ground wire, a step-down dc-dc converter is used after rectification of the ac voltage to provide a regulated dc output voltage. The initial encouraging results obtained indicate that this form of power supply can be a feasible and cost-effective alternative for feeding small ancillary service loads. The simulation results are validated by field measurements as well as the installation of a 200 W voltage stabilization system prototype.