低压电网漏电流综合监控系统的设计

Design of Integrated Monitoring System for Supervisory Control of Leakage Current in Low Voltage Network

低压电网漏电流综合监控系统包含智能漏保断路器、数据集中器和监控主站。智能漏保断路器采集线路负荷及漏电流,记录故障信息,并通过Zig Bee网络将数据传至数据集中器。数据集中器将所有的智能漏保断路器的数据汇总后,由GPRS网络上传至监控主站。监控主站运用故障定位算法定位故障区段,发出遥控断路器分合闸命令实现故障区段的隔离和非故障线路的恢复供电。所设计的系统提高了供电可靠性,具有良好的经济效益。

This paper designed a low-voltage power grid leakage current comprehensive monitoring system, composed of intelligent leakage protection circuit breakers, data concentrator and main monitoring station. Intelligent leakage protection circuit breaker can gather the load and leakage current in real time and record the information of fault trip, transfer the data to the data concentrator with Zig Bee network. Data Concentrator can not only integrate data, but also forwarded to the main monitor station via GPRS network. Main monitor station uses fault location algorithm to locate the fault zone and remotely control the sub-closing of breakers, isolate fault zone and realize the power restoration of non-faulted lines. The system improves the reliability of power supply, with good economic returns.