有源电子式电压互感器一次侧电路的低功耗设计  

Design of primary converter for active electronic voltage transformers with low power consumption

作　　者：肖霞[1] 徐雁[1] 韩世忠[1] 向珂[1] 叶妙元[1] 

机构地区：[1]华中科技大学电气与电子工程学院,武汉430074

出　　处：《仪器仪表学报》2006年第z1期975-977,共3页Chinese Journal of Scientific Instrument

摘　　要：介绍基于电容分压原理的有源电子式电压互感器的系统组成。针对一次侧电路的低功耗设计要求,讨论一次测电路的各组成部分的设计要求,提出具体的实现方案,着重分析低功耗模数转换器、微处理器等设计,实现用同步时钟速率模拟异步发送的方式实现数据的单光纤发送,以降低电路的功耗。经实际测试,所设计的一次侧电路的功耗是比较低的,仅为74.5mW。整个AEVT的型式试验结果表明,系统的计量准确度优于0.2级,保护准确度达到3P级。The configuration active electronic voltage transformer system based on the capacitive divider is described.In order to make the primary side circuit with low consumption,the detailed scheme of all components was proposed.It analyzes A/D converter,micro controller and opto-electric converter,realizes the single optical fiber data transmitting through imitating asynchronous transmitting with synchronous clock rate.The real consumption of the total primary side module is 74.5mW,which could be powered by laser energy.The type tests of AEVT show that the accuracy for measurement is better than 0.2 level and protective lovel is 3P level.

关 键 词：电容分压器 有源电子式电压互感器 低功耗设计A/D转换 

分 类 号：TH7-55[机械工程—仪器科学与技术]