摘要
目前,畸变信号下的电能计量标准还不完善。为了研究畸变信号下电能计量方法,本文建立了电网典型信号数学模型,选用双核构架处理器设计了电能计量实验仪器。设计了信号发生器、信号采集装置、控制单元、双机通信等模块。采用设计的测量仪器对典型畸变信号下的功率进行测量,验证了小波变换分频带功率算法的准确性和同步性。研究表明:采用的计量方法计算精度可达10-3,小波变换分频带功率算法可用于简单谐波与连续谱耦合的畸变信号电能计量。
At present,the standard of electric energy measurement under distorted signal was still not perfect. In order to study the measurement method of the distorted signal,the mathematical model of the typical signal of the power network was established. Signal generator,signal acquisition device,control unit,two computer communication modules were designed. In this paper,the measuring instrument was designed to measure the power of the typical distorted signals,and the accuracy and synchronization of the wavelet transform frequency band power algorithm were verified. The research shows that the calculation accuracy of this method can reach 10- 3,and the wavelet transform frequency band power algorithm can be used to measure the distortion signal electric energy of simple harmonic and continuous spectrum.
出处
《仪表技术与传感器》
CSCD
北大核心
2016年第10期102-105,共4页
Instrument Technique and Sensor
基金
国家高技术研究发展计划(863)资助项目(2011AA01A207)
关键词
电能计量
分频带
小波变换
畸变信号
硬件系统
electric energy measurement
frequency band
wavelet transform
distortion signal
hardware system
