单相电能表检测装置上应用双功率放大器的实践  

Practice to apply bi-amplification on single-phase electric energy meter test bench

作　　者：王祥 徐永进[2] 余新军 朱立新 干晓明 徐燕明 

机构地区：[1]浙江涵普电力科技有限公司,浙江海盐314300 [2]国网浙江省电力公司电力科学研究院,杭州310014

出　　处：《电测与仪表》2015年第12期56-59,共4页Electrical Measurement & Instrumentation

摘　　要：文中介绍了一种单相电能表检验装置的实现原理,其中一般包含电流放大器,电压放大器,双路电流虚拟负荷电路,误差仪等核心部件。特别介绍了该单相检验中使用的大功率双电流功率放大器的工作原理。该双路电流放大器已经在90表位及以上的单相电能表检验装置上应用,大大提高了电流放大器的可靠性,多表位检验装置的在电力部门计量中心的应用,大大提高了客户的测试效率,也提高了经济效益。In this paper,the realization principle of a single-phase electric energy meter detecting device is introduced,and in general,it includes current amplifier,voltage amplifier and two-way current virtual load circuit and error tester. And the working principles of the high-power and double-current power amplifier used in the single-phase detection are especially introduced in details. Besides,the double-current power amplifier is applied on single-phase electric energy detecting device above 90 meter bits to verify the reliability and practicability of the bi-amplification.The multi-position energy meter test device is widely used in the center of measurement of power sector,not only greatly improves the customer＇s test efficiency,but also improves the economic benefit.

关 键 词：双回路电能表 双电流功率放大器 SPWM调制 三角波放大器 虚负荷校验 远程费控电能表 

分 类 号：TM933[电气工程—电力电子与电力传动]