發(fā)布時間：2018-01-07 18:20

  本文關(guān)鍵詞：檢測電流包含電容電流的SAPF諧波抑制和諧振阻尼新方法　出處：《電工技術(shù)學(xué)報》2017年S1期 　論文類型：期刊論文

  更多相關(guān)文章： 并聯(lián)型有源電力濾波器 諧波補償 諧振阻尼 并聯(lián)電容器

【摘要】：研究一個由并聯(lián)型有源電力濾波器(SAPF)和并聯(lián)電容器組成的混合補償系統(tǒng),其中并聯(lián)電容器的容性阻抗會與配電網(wǎng)的感性阻抗發(fā)生并聯(lián)諧振。當檢測電流中不包含電容電流時,SAPF可以抑制諧波和阻尼諧振且系統(tǒng)穩(wěn)定;當檢測電流中包含電容電流時,SAPF采用傳統(tǒng)方式補償會使得系統(tǒng)諧振頻率向高頻漂移。針對SAPF檢測電流包含電容電流情況,提出一種改進的控制方法。該方法基于諧波電流分頻控制策略,將高于諧振頻率的抑制電流指令取反,低于諧振頻率的抑制電流指令保持不變,同時檢測諧振頻率附近的公共耦合點(PCC)電壓構(gòu)建虛擬阻尼電阻,并對虛擬電阻的電導(dǎo)值進行閉環(huán)調(diào)節(jié)。采用該方法補償后的網(wǎng)側(cè)電流和PCC電壓均滿足電能質(zhì)量標準。最后進行了仿真和實驗驗證。
[Abstract]:A study by the shunt active power filter (SAPF) hybrid compensation system and capacitors connected in parallel, the parallel capacitor capacitive impedance and inductive impedance distribution network parallel resonance. When the capacitor current does not include current detection, SAPF can suppress the harmonic wave and damping resonance and the stability of the system; when including capacitance current detection current in SAPF, using the traditional way of compensation will make the system resonant frequency to high frequency drift. According to the SAPF detection current contains the capacitor current situation, this paper proposes an improved control method. This method is based on the harmonic current frequency control strategy, suppression of the current instruction will be higher than the resonant frequency of the inversion, below the current command resonance suppression the frequency remained unchanged, at the same time to detect the point of common coupling near resonant frequency (PCC) voltage virtual damping resistor and conductance on the virtual resistance value closed-loop regulation The network side current and PCC voltage compensated by this method meet the standard of power quality. Finally, the simulation and experimental verification are carried out.

【作者單位】： 強電磁工程與新技術(shù)國家重點實驗室(華中科技大學(xué)電氣與電子工程學(xué)院);國家電網(wǎng)公司華中分部;
【基金】：國家自然科學(xué)基金資助項目(51277086)
【分類號】：TM761;TM935
【正文快照】： 0引言隨著電力電子裝置的應(yīng)用日益廣泛,各類非線性負載的大量應(yīng)用,造成配電系統(tǒng)中的諧波污染嚴重[1]。同時為了起到改善功率因數(shù)和電壓支撐的作用,我國在低壓配電系統(tǒng)中廣泛裝設(shè)并聯(lián)電容器,但是網(wǎng)側(cè)感性阻抗和電容器容性阻抗會形成諧振網(wǎng)絡(luò)。如果非線性負載的交流側(cè)包含有諧振

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本文編號：1393706