基于FPGA的电力系统谐波检测算法研究及实现  

Study on FPGA-based Harmonic Detection Algorithm and Its Implementation in Power System

作　　者：宋泽琳[1] 郑恩让[1] 马令坤[1] 

机构地区：[1]陕西科技大学电气与信息工程学院,西安710021

出　　处：《化工自动化及仪表》2011年第6期713-717,共5页Control and Instruments in Chemical Industry

基　　金：温州市科技局资助项目(H20080001)

摘　　要：针对谐波检测系统中FFT运算器实时性差和精度低的问题,基于FPGA采用了浮点运算、并行操作和流水线结构相结合的方法,最大限度地提高谐波检测的精度和速度。FFT运算器用VHDL语言设计实现,采用EP2C35F672C6芯片进行综合实现,通过quartus II7.2工具进行时序仿真。仿真结果表明,当系统工作频率为100MHz时,完成1 024点浮点数的FFT需要67μs,此处理时间远小于1 024点序列的采样时间,满足了谐波检测系统实时性的要求。Considering the poor real-time feature and low accuracy of FFT processor in harmonic detection system and basing on FPGA,the floating-point operation,parallel processing and pipeline structure were integrated to increase the accuracy and speed to the utmost in harmonic detection.The VHDL language and the FPGA EP2C35F672C6 chip were employed in the design process,and the Quartus II 7.2 was taken to simulate this.The simulation results show that the simulation time for the 1024-floating-point totals 67μs while the system works at 100MHz,and it＇s far less than the sampling time of 1024-point sequence and can meet the real-time requirements of harmonic detection system.

关 键 词：谐波检测 FPGA 浮点运算 并行操作 流水线结构 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]