A new method of automatic monitoring DC breaker by using GPRS technique

Abstract

To get the full information of the current in different circuit, a new method is put forward to monitor the D.C. breaker by using the GPRS technique when the breaker is switching of. Also, the software and the hardware of the monitoring system are designed and developed. This system chosen Hall current sensor to measure the signal of reference current in different circuit when DC circuit breaker is in breaking process; By BECKHOFF's CX1020 and EL3702 terminal collecting the signal; Using the KL6001 serial terminal interface module and H7210 GPRS DTU consisting of transport systems and transmitting data via GPRS network; The monitoring center which can receive, display and process the data packet is developed by a VC-based. We build the oscillation circuit to detect the monitoring system in the laboratory. The test result indicates that this system can meet the requirements well for data collecting on real time and transferring in security. The waveform of each loop's current can be displayed in the virtual oscilloscope which provides crucial information to analyze the health state of the breaker. © 2011 Springer-Verlag.