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Design of Multi-function Watt-hour Meter Based on the New Electronic Current Transformer
Author(s): 
Pages: 56-60
Year: Issue:  16
Journal: AUTOMATION OF ELECTRIC POWER SYSTEMS

Keyword:  电子式电流互感器多功能电能表ADE7758H8单片机;
Abstract: 电能表用电流互感器的性能直接影响到电能表计量的准确度.针对目前电能表用电磁式电流互感器易饱和、测量范围较小等问题,提出了一种基于印制电路板(PCB)型电子式电流互感器的多功能电能表的设计方案.首先对PCB型空心线圈的结构及原理进行了分析,设计了空心线圈与计量芯片间的接口电路,并通过试验数据表明互感器具有良好的性能,然后详细阐述了以三相高精度计量芯片ADE7758和高性能、低功耗H8单片机为核心的电能表的硬件设计,在此基础上简要说明了电能表的软件设计思路.所设计的电能表计量准确度高,功耗低,具有很强的实用性.
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