一种高效的电力系统谐波检测方法  

An Efficient Technique of Harmonic Measurement in Power system

作　　者：范必双[1] 王玉凤[1] 王英健[1] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410076

出　　处：《广东电力》2007年第10期1-6,共6页Guangdong Electric Power

摘　　要：介绍了一种高效的电力系统谐波检测方法。该方法的整体系统设计从多方面考虑,以提高谐波检测的精度和速度,因此,选择高速、高精度的A/D转换器件(ADS8364),确保采样值的精确度,并采用锁相环(phase-locked loop,PLL)技术来同步被测信号,以减小由非同步采样所产生的误差。重点介绍了基-4FFT的谐波测量原理,详细地阐述了这种高效的并行算法在现场可编程门阵列(field programmable gate array,FPGA)上的硬件实现过程,最后通过仿真验证了该方法的实效性。In this paper, an efficient technique of harmonic measurement in power system is presented. The system is designed to promote the accuracy and speed of harmonic measurement. Firstly, the high speed and precision A/D converter （ADS8364）is selected to ensure the precision of sampling data. Secondly, the phase-locked loop（ PLL）is used to synchronize the tested signal to minish the error caused by asynchronous sampling. In this paper, an emphasis is put on the harmonic measurement of the radix-4 FFT, and the hardware based realization of the efficient concurrent arithmetic on field programmable gate array（FPGA）is presented. Lastly, a simulation is carried out to validate the actual effect of the technique.

关 键 词：谐波检测 现场可编程门阵列(FPGA) 基-4 FFR A/D转换器件(ADS8364) 锁相环(PLL) 

分 类 号：TM711[电气工程—电力系统及自动化]