【摘要】：隨著電力電子裝置的廣泛應(yīng)用和多種分布式能源的接入,低壓配電網(wǎng)的電能質(zhì)量問題已日益突出。為改善多饋線型低壓配電網(wǎng)公共連接點(diǎn)(PCC)處的電能質(zhì)量,降低其電壓諧波失真,以具有諧波補(bǔ)償功能的單相光伏并網(wǎng)設(shè)備為基本單元,構(gòu)建了一個(gè)分布式有源濾波系統(tǒng)。通過分析低壓配電網(wǎng)中各饋線對PCC處電壓諧波的責(zé)任,對各饋線的諧波補(bǔ)償任務(wù)進(jìn)行了優(yōu)化調(diào)整。此外,采用基于虛擬諧波阻抗的下垂控制方法,實(shí)現(xiàn)了多設(shè)備并聯(lián)時(shí)的自主協(xié)調(diào),并提出了一種參考PCC處諧波責(zé)任的諧波補(bǔ)償容量分配算法,提升了在輸出容量限制情況下分布式有源濾波系統(tǒng)的諧波補(bǔ)償效果。最后,通過軟件對上述模型和控制策略進(jìn)行了建模與仿真,仿真結(jié)果驗(yàn)證了該系統(tǒng)的可行性和有效性。
[Abstract]:With the wide application of power electronic devices and the access of a variety of distributed energy sources, the problem of power quality in low-voltage distribution networks has become increasingly prominent. In order to improve the power quality at common connection points (PCC) of multi-fed low-voltage distribution network and reduce the voltage harmonic distortion, a distributed active filter system is constructed based on single-phase photovoltaic grid-connected equipment with harmonic compensation function. By analyzing the responsibility of each feeder to the voltage harmonics at PCC in the low voltage distribution network, the harmonic compensation task of each feeder is optimized and adjusted. In addition, the droop control method based on virtual harmonic impedance is used to realize the autonomous coordination of multiple devices in parallel, and a harmonic compensation capacity allocation algorithm with reference to harmonic responsibility at PCC is proposed. The harmonic compensation effect of distributed active filter system with limited output capacity is improved. Finally, the model and control strategy are modeled and simulated by software, and the simulation results verify the feasibility and effectiveness of the system.
【作者單位】： 同濟(jì)大學(xué)電子與信息工程學(xué)院;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(0800219170) 浙江省科技計(jì)劃項(xiàng)目(2013C01063)~~
【分類號(hào)】：TM761

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 張國榮;張鐵良;丁明;蘇建徽;汪海寧;;光伏并網(wǎng)發(fā)電與有源電力濾波器的統(tǒng)一控制[J];電力系統(tǒng)自動(dòng)化;2007年08期

2 曾正;楊歡;趙榮祥;;多功能并網(wǎng)逆變器及其在微電網(wǎng)中的應(yīng)用[J];電力系統(tǒng)自動(dòng)化;2012年04期

3 施大發(fā);王曉;陳燕東;肖萍;熊橋坡;;一種光伏并網(wǎng)與電能質(zhì)量復(fù)合控制系統(tǒng)的設(shè)計(jì)[J];電力系統(tǒng)自動(dòng)化;2012年04期

4 楚p，

本文編號(hào)：2120762