摘要
基于电力线传输技术的智能防窃电装置由监测单元、中央处理单元和电力线收发器等硬件组成。通过对高供低计或高供高计三相三线供电用户的二次侧电压、电流进行实时监测,分析电压、电流之间的相位关系。对于二次侧电流相线接错和电压相线接错等窃电方式进行实时监控,并记录用电情况和线路接线状况。由单片机模拟Neuron芯片串行通信的专用工作方式控制双频载波电力线收发器,并经过中继器实现通过电力线实时数字传送用户的用电信息。根据电力线收发器硬件的信息传送方式,通信协议采用了CAN2.0B的主要结构,并在应用层增加了纵向奇偶校验,进一步提高了数据通信的可靠性。
An intelligent electricity-filch monitoring device based on power line transmission tech-nology is introduced,which consists of monitoring unit,CPU,power line transceiver and so on. The secondary voltage and secondary current of three-phase three-wire power supply are real-timely moni-tored. The phase relationship between voltage and current is analyzed to detect the electricity steal by means of improper connection of secondary phase lines of current and voltage,and the power consumption conditions and power line connections are recorded. Microcomputer simulates the special working mode of Neuron chip in serial communication to control the double-band carrier power line transceivers,and transmits user's real-time power consumption information with power line via repeaters. According to the information transmission way of power line transceiver,the main structure of CAN 2.0B is adopted in the communication protocol and the sum check is added in application layer to enhance the reliability of data transmission.
出处
《电力自动化设备》
EI
CSCD
北大核心
2005年第6期57-61,共5页
Electric Power Automation Equipment
关键词
防窃电
电力线收发器
通信协议
electricity steal prevention
power line transceiver
communication protocol
