基于FBD法的谐波检测方法和低通滤波器的优化设计  

Harmonic Detection Method Based FBD and Low Pass Filter’s Optimized Design

作　　者：王杰[1,2] 郑建勇[1,2] 梅军[1,2] 王立峰[1,2] 

机构地区：[1]东南大学电气工程学院,南京210096 [2]苏州市电气设备与自动化重点实验室,江苏苏州215123

出　　处：《电测与仪表》2010年第7期50-55,共6页Electrical Measurement & Instrumentation

摘　　要：本文对基于Fryze功率理论的FBD谐波电流检测算法进行了深入分析,论证了FBD法与ip-iq法的一致性。与ip-iq法相比,FBD法没有复杂的Park变换及其反变换,可更快速地用于单相、三相三线制、三相四线制的谐波和无功电流实时检测。为了使整个检测系统获得良好的检测精度和动态响应速度,提出了一种新型的数字低通滤波器优化设计方法,仿真和实验结果表明该方法检测实时性好、精度高、易实现,具有实用价值。The article analyzes the FBD algorithm thoroughly based on Fryze’s power theory for the harmonic current detection and demonstrates the consistency of the FBD and ip-iq.Compared with ip-iq,there is no Park transformation and its inverse transformation in FBD algorithm,so it can be applied to single phase system,three-phase three-wire system and three-phase four-wire system for the real-time detection of the harmonic and reactive current.A novel optimization design method for the digital low-pass filter is proposed to make the whole detection system obtain better precision and more response speed.Simulation and experiment results show that the proposed detection method is with real-time,high precision and easy implementation as well as application in distribution system.

关 键 词：FBD法 IP-IQ法 BUTTERWORTH滤波器 均值滤波器 

分 类 号：TM93[电气工程—电力电子与电力传动]