LI QIANG, WANG BOQIANG, WANG ZIHAO. An ip-iq Harmonic Detection Algorithm Based on Double-window Width Moving Filters. [J]. Power capacitor & reactive power compensation, 2019, 40(3): 23-28.
LI QIANG, WANG BOQIANG, WANG ZIHAO. An ip-iq Harmonic Detection Algorithm Based on Double-window Width Moving Filters. [J]. Power capacitor & reactive power compensation, 2019, 40(3): 23-28. DOI: 10.14044/j.1674-1757.pcrpc.2019.03.005.
In order to reduce the influence of sudden increase of load on harmonic current identification
in this paper
a kind of harmonic detection method based on i
p
-i
q
model with double moving average filters algorithm is proposed. The mathematical model of moving average filter is established;the existenceform of harmonic after dq transformation is deduced
thus pointing superiority of double moving filtering method on the harmonic detection.The SIMLINK is used to set up load zero switchingmodels with and without harmonic condition
and the harmonic current on the trunk line in the switching of grid network is simulated. It is shownbytheresultthattheuseofdoublemovingaverage
filterimprovesthefastperformanceoftheharmonic current detection and assures the accuracy of harmonic current detection
which can adapt to dynamic and steady state process and enhance system robustness and reliability.
关键词
谐波电流检测ip-iq检测模型双滑动平均滤波算法有源电力滤波器
Keywords
harmonic current identificationip-iq modeldouble moving average filtersAPF