基于准同步采样的电网频率测量装置设计  

Design of power grid frequency measurement device based on quasi-synchronous sampling algorithm

作　　者：王帅夫 宋健 李恺 孟卓[2] WANG Shuai-fu;SONG Jian;LI Kai;MENG Zhuo(State Grid Hunan Electric Power Co.,Ltd. Technical Skills Training Center,Changsha 410131,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;State Grid Hunan Electric Power Company Power Supply Service Center(Metrology Center),Changsha 410007,China)

机构地区：[1]国网湖南省电力有限公司技术技能培训中心,湖南长沙410131 [2]湖南大学电气与信息工程学院,湖南长沙410082 [3]国网湖南省电力有限公司供电服务(计量)中心,湖南长沙410007

出　　处：《电子设计工程》2019年第10期19-23,共5页Electronic Design Engineering

基　　金：教育部-中国移动科研基金项目(MCM20150101);2018年国网湖南省电力有限公司群众性创新项目(5216AP180002)

摘　　要：如何克服非同步采样偏差对频率测量结果的影响,一直是国内外学者研究的重点。装置采用准同步采样电网频率测量算法,设计基于模数转换器和数字信号处理器的电网频率测量装置,给出了设计原理框图和工作流程图,提出了基于最小二乘法的频率测量装置校准方案,开展了测量实验并分析了实验结果。实验结果表明,频率测量装置的研究可为用于电能质量检测、电力系统保护的电网频率测量提供借鉴。How to overcome the influence of non-synchronous sampling bias on frequency measurement results has been the focus of scholars at home and abroad. In this paper,the quasi-synchronous sampling grid frequency measurement algorithm is used to design the grid frequency measuring device based on analog-to-digital converter and digital signal processor. The design principle block diagram and working flow chart are given. The frequency measurement device calibration based on least squares method is proposed. The program,carried out measurement experiments and analyzed the experimental results. The research in this paper provides a reference for grid frequency measurement for power quality detection and power system protection.

关 键 词：电网频率 准同步采样 谐波 测量 

分 类 号：TM935.1[电气工程—电力电子与电力传动]