The Study On DC Leakage Protection Technology

With power plants, power distribution stations, petrochemical metallurgy, mines, communications, and high-rise buildings, and other DC equipment users increased, its braking, protection, signaling and lighting equipment and backup power supply, circuit breaker, together switching operation of the DC power system provides power to use it more and more attention. Therefore, reliable monitoring of the DC system is particularly important.In this paper, the DC leakage protection technology for the study, by exploring a variety of DC detection, analysis of several types of DC leakage protection methods. And the magnetic modulation principle of which was improved sensor is designed based on single-core single-winding magnetic modulation of the DC leakage protection sensors. It can detect the leakage current, the fault diagnosis, identified as failure to give timely warning signals and alarms can be taken according to different requirements not trip the alarm trip and only two kinds of trouble dealing with, it can be done better DC system monitoring and detection. Designed using the ATMEL ATMEGA16 microcontroller company, the use of C language programming and peripheral devices connected to data collection, processing, real-time display, alarm, trip and system self-diagnostic functions, the other exception is detected when the transformer work You can also send the alarm, prompting the user to solve the problem as soon as possible, so that the reliability of the design work better.Research of DC leakage protection will increase the reliability of the DC leakage test, but also convenient for extensions to make it more value.