The ideal voltage and current wavebs in power systems are all sine waves with a frequency of 50Hz, but they arewidely used in non-linear power equipment (such as high-power thyristors, frequency converters, UPS, switching powersupplies, mid-frequency furnaces, and energy-saving lamps), in which a large number of distorted harmonic currents aregenerated and harmonic currents are coupled to produce harmonic voltages on the line. The Fourier series decombis perbed on the non-sinusoidal distortion current, where the component of the same frequency with the powerfrequency is the fundamental wave, and the component of the integral multiple of the fundamental wave frequency is theharmonic wave. This kind of harmonic "pollution" will cause great harm to the power grid and the user, so the harmonicsuppression is called a "green project"!

由于電力電子技術(shù)的發(fā)展，有源電力濾波器（APF）開(kāi)始規(guī)?；瘧?yīng)用，相對(duì)于傳統(tǒng)的諧波抑制和無(wú)功補(bǔ)償裝置，APF 響應(yīng)速度快、實(shí)時(shí)跟蹤補(bǔ)償各次諧波，具有補(bǔ)償諧波、無(wú)功補(bǔ)償和平衡三相電流的功能，同時(shí)，APF 還具有不受系統(tǒng)阻抗影響、無(wú)諧振隱患、補(bǔ)償效率高等優(yōu)勢(shì)，在各行各業(yè)的供電系統(tǒng)中已經(jīng)得到廣泛應(yīng)用。產(chǎn)品符合企業(yè)標(biāo)準(zhǔn) Q31/0114000129C033-2017《ANAPF 有源電力濾波器》的規(guī)定。

1.2 ANAPF 的基本原理

ANAPF 系列有源電力濾波器并聯(lián)在含諧波負(fù)載的低壓配電系統(tǒng)中，能夠?qū)?dòng)態(tài)變化的諧波電流進(jìn)行快速實(shí)時(shí)的跟蹤和補(bǔ)償。其原理為：ANAPF 系列有源電力濾波器通過(guò) CT 采集系統(tǒng)諧波電流，經(jīng)控制器快速計(jì)算并提取各次諧波電流的含量，產(chǎn)生諧波電流指令，通過(guò)功率執(zhí)行器件產(chǎn)生與諧波電流幅值相等方向相反的補(bǔ)償電流，并注入電力系統(tǒng)中，從而抵消非線性負(fù)載所產(chǎn)生的諧波電流。

技術(shù)參數(shù)

應(yīng)用組網(wǎng)圖

外形尺寸