电力系统保护与控制2012，Vol.40Issue(10)：84-89,6.
基于瞬时无功功率理论的自整定因子变步长低通滤波器研究
A variable step-size low-pass filter with self-tuning factor based on instantaneous reactive power theory
摘要
Abstract
Harmonic current detecting methods based on instantaneous reactive power theory is adopted broadly, whose performance is mainly affected by the low-pass filter. Considering the shortcomings of traditional digital low-pass filter such as fixed cut-off frequency, a variable step-size low-pass filter model with self-tuning factor is presented. The fuzzy regulator using non-uniform quantization rule is introduced to online adjust LPF's step parameters, so as to dynamically regulate LPF's cut-off frequency. The simulation comparison and experiment verification are listed to show that the proposed model has better performance both in steady state accuracy and dynamic property compared with traditional LPF; meanwhile it also can be easily realized by programming, and the experiment results show that active filter and other FACTS devices using this LPF model have outstanding harmonic compensating capability to non-linear loads.This work is supported by National Natural Science Foundation of China (No. 61074042, No. 60674035, and No. 50807037).关键词
瞬时无功功率理论/谐波电流检测/数字低通滤波器/变步长/有源滤波器Key words
instantaneous reactive power theory/ harmonic current detecting/ digital low-pass filter/ variable step-size/ active filter分类
信息技术与安全科学引用本文复制引用
刘心旸,王杰..基于瞬时无功功率理论的自整定因子变步长低通滤波器研究[J].电力系统保护与控制,2012,40(10):84-89,6.基金项目
国家自然科学基金项目(61074042,60674035,50807037) （61074042,60674035,50807037）
