畸变信号条件下电能计量实验仪设计  

Design of Electric Energy Measuring Experimental Apparatus on the Condition of Distorted Signals

作　　者：张晓冰[1] 郑帅兵[1] 车成弟 崔晓萌[1] 

机构地区：[1]哈尔滨理工大学测控技术与通信学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2015年第5期74-79,共6页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(51277043);黑龙江省教育厅科学技术研究项目(12531128)

摘　　要：针对目前电能计量存在的问题,在研究畸变信号条件下电能计量新方法的基础上,设计了基于DM3730的畸变信号条件下电能计量实验仪,验证了畸变信号条件下电能计量新方法的正确性.采用片上双CPU架构与片内共享内存数据的设计方法,搭建了硬件系统结构,阐述了其工作原理.设计了实验仪的软件系统,使用C编程实现小波分频带测量功率算法.最后在实验仪上对电网典型畸变信号进行功率测量实验,实验结果表明畸变信号条件下电能计量实验仪的准确度高及小波分频带测量算法的实时性好,为深入研究畸变信号条件下电能计量装置提供了一定的参考价值.An electric measuring experimental apparatus based on DM3730 is designed on the basis of studying a new method of electric energy measurement on the condition of distorted signals. It verifies the rightness of the method. Hardware system structures are built based on a design method of on-chip dual-core CPU architecture and shared memory data. The working principles are expounded. Experiment instrument software system is designed and the wavelet frequency band power measurement algorithm is implemented using C programming language. On the experimental instrument, make the measure power experiment for the electric network distortion typical signals, the experimental results verify the correctness of energy measurement method under the distortion signal and the real time of sub-band wavelet transform algorithm. It provides a certain reference value for further research on electric energy metering under the condition of distortion signal device.

关 键 词：电能计量 DM3730 小波变换 畸变信号 

分 类 号：TM744[电气工程—电力系统及自动化]