EPE  Vol.5 No.4 B , July 2013
Design of Power Supply for On-line Monitoring System of Transmission Lines

This paper uses CT to gain the energy directly from the high-voltage transmission line, to address the problem of power supply for monitoring system in high voltage side of transmission line. The draw-out power coil can induce voltage from the transmission line, using single-chip microcomputer to analog and output PMW wave to control the charging module, provides a stable 3.4 V DC voltage to the load, and solve the problem of easy saturating of core. The power supply based on this kind of draw-out power coil has undergone the overall testing, and it is verified-showing that it can properly work in a non-saturated status within the current range of 50 - 1000 A, and provide a stable output. The equipment also design protection circuit to improve the reliability to avid the impacts of the impulse current or short-circuit current. It effectively solves the problem of power supply for On-line Monitoring System of Transmission.

Cite this paper: K. Chen, Z. Zhao, Y. Zhang, Y. Cheng and Y. Dai, "Design of Power Supply for On-line Monitoring System of Transmission Lines," Energy and Power Engineering, Vol. 5 No. 4, 2013, pp. 570-574. doi: 10.4236/epe.2013.54B109.

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