基于单相电能表的防窃电新技术的研究

Anti-steal New Technology Research Based on Single-phase Watt-hour Meter

针对当前严重的窃电现象以及现有防窃电措施的不足,提出并设计了一种基于单片机+双ADE7755结构的单相电子式防窃电电能表,两片电能计量芯片ADE7755完成相线、零线电流与电网电压的采集与计算,解决了数据采集与处理的实时性问题,单片机根据软件算法比较两片ADE7755的脉冲数,实现了对用户用电状况的实时监测、各种窃电方式的准确甄别和窃电时间的实时记录,并使成本大幅度降低,实际运用表明:该系统能够准确、实时地检测出窃电,且运行稳定可靠。

Due to the severe tampering actions and the disadvantage of tampering prevention means, a new single-phase electronic anti- steal watt-hour meter based on one microprocessor and two pieces of ADE7755 is proposed and designed. Voltage signal as well as current signals of phase line and neutral line are collected and processed through two pieces of ADE7755, which resolve the real-time processing of data acquired. The functions of monitoring the state of the electric energy, identifying the energy stealing activities and recording the time of stealing can be a chieved by the microprocessor executing software that compares the pulses of the two pieces of APE7755, and subsequently the general cost is greatly reduced. Practices indicate that the meter can identify energy stealing activities accurately and timely and run stably.