基于高精度数字倍频原理实现电力系统频率跟踪的新技术  

Novel Technique Based on Digital Frequency Multiplying Principle with High Accuracy in Power System Frequency Tracking

作　　者：胡晓菁[1] 宋政湘[1] 王建华[1] 耿英三[1] 申望[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《高压电器》2007年第3期172-175,共4页High Voltage Apparatus

基　　金：国家自然科学基金资助项目(50477026);新世纪优秀人才资助项目(NCET-04-0924)

摘　　要：在分析现有频率跟踪技术的原理及特点基础上,提出了一种基于高精度数字倍频的频率跟踪的新技术,实现了电能质量在线监测的频率跟踪,它的自适应补偿功能可以有效地减少倍频误差,消除了基波波动导致的计算误差,保证基频偏离工频时有效实现采样窗口与被测周期的同步。同时,在现场可编程门阵列FPGA上验证了该设计的正确性,使该模块可作为一个独立的单元嵌入到电能质量在线监测装置中。This paper analyzed the principle and character of previous frequency tracking technique. A novel technique was represented, in which adaptive compensation was adopted to minimize the error of digital frequency multiplying effectively. This eliminated calculation error caused by frequency devia- tion, and realized synchronization of sampling windows and period. The results on field programmable gate array indicate that design is validity and can be set in electric energy quality on-line monitor device as an unaided module.

关 键 词：在线监测 频率跟踪 数字倍频 FPGA 

分 类 号：TN771[电子电信—电路与系统] TM76[电气工程—电力系统及自动化]