基于FBD法的谐波检测方法和低通滤波器的优化设计.pdfVIP

学兔兔 总第47卷 第535期 电测与仪表 Vo1．47 No．535 2010年 第O7期 Electrical Measurement Instrumentation Ju1．2010 基于FBD法的谐波检测方法和低通滤波器的优化设计 王杰J2，郑建勇1’2，梅军 ，王立峰 2 f1．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) 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- 法的一致性。与 ip-iq~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I生好、精度高、易实现，具有实用价值。 关键词：FBD法；ip-i 法；Butterworth滤波器；均值滤波器 中图分类号：TM93 文献标识码：B 文章编号：1001—1390(2010)07—0050—06 Harmonic Detection Method Based FBD and Low Pass Filter’S Optimized Design WANG Jie ，ZHENG Jian—yong ，MEI Jun ，WANG Li-feng ， (1．Department of Electrical Engineering，Southeast University，Nanjing 210096，China． 2．Laboratory of Electrical Equipment and Automation in Suzhou，Suzhou 215123，Jiangsu，China) Abstract：The article analyzes the FBD algorithm thoroughly based on Fryze’S power theory for the harmo nic current detection and demonstrates the consistency of the FBD and iv-iq．Compared with／p-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 detecti6n method is with real—time，high precision and easy implementat