智能电能表动态误差确定型测试激励信号的讨论  

Discussion of Definitive Test Excitation Signals for Dynamic Error of Intelligent Electric Meter

作　　者：王学伟[1] 温丽丽[1] 袁瑞铭[2,3] 周丽霞[2,3] 

机构地区：[1]北京化工大学信息学院,北京100029 [2]华北电力科学研究院有限责任公司,北京100045 [3]冀北电力有限公司计量中心,北京102208

出　　处：《电测与仪表》2014年第4期1-7,共7页Electrical Measurement & Instrumentation

基　　金：华北电力科学研究院有限责任公司项目(KJZ13048)

摘　　要：针对智能电能表动态误差特性测试问题,分析了确定型测试激励信号的时域和频域特征,包括变幅值动态负荷激励信号、变频率动态负荷激励信号和变相位动态负荷激励信号。分别从激励信号的幅值变化速率、激励电流和瞬时功率包含的频率成分,动态负荷下的激励模式,以及激励信号控制产生的难易程度四个方面对这几类信号进行了分析比较,结果表明梯形包络激励电流信号用于测试智能电能表的动态误差比其它激励测试信号优点更多。In order to research the dynamic error characteristic of intelligent electric meter, the characteristics in both time and frequency domain of definitive excitation signals which include variable amplitude dynamic load excitation signal, variable frequency dynamic load excitation signal and variable phase dynamic load excitation signal are analyzed in this paper. These signals are compared respectively from the following four aspects： amplitude changes rate of excitation signal, frequency components of excitation current and instantaneous power, excitation pattern under dynamic load and the ease of excitation signal control. The results show that the trapezoid envelope excitation current signal is more appropriate to test the dynamic error of intelligent electric meter than other excitation signals.

关 键 词：智能电能表 动态误差 确定型激励信号 

分 类 号：TM933[电气工程—电力电子与电力传动]