【摘要】：直流配電網(wǎng)是未來配電系統(tǒng)發(fā)展的新趨勢,其電能質(zhì)量問題是需要關(guān)注的重要問題之一。其中紋波的影響因素多、涉及面廣,是一種常見的直流電能質(zhì)量問題。結(jié)合直流配電網(wǎng)的拓撲結(jié)構(gòu)、變流器交流側(cè)的特性,分析由于交流負荷非理想特性及交流電源不理想因素而引起的直流紋波形成機理。在此基礎(chǔ)上,對交流接入端三相對稱和不對稱情況下正序諧波、負序諧波及零序諧波在直流側(cè)產(chǎn)生的紋波及相互間的疊加情況進行頻域分析,建立了紋波疊加特性與交流諧波次數(shù)和相位的關(guān)系。仿真結(jié)果驗證了理論分析的正確性。
[Abstract]:DC distribution network is a new trend of distribution system in the future, and its power quality is one of the important problems to be paid attention to. The ripple is a kind of common DC power quality problem because of its many influencing factors and a wide range of aspects. Combined with the topology of DC distribution network and the characteristics of AC side of converter, the formation mechanism of DC ripple caused by non-ideal characteristics of AC load and imperfect factor of AC power supply is analyzed. On this basis, the frequency domain analysis of the ripple and the superposition of the positive harmonic, the negative sequence harmonic and the zero sequence harmonic on the DC side under the condition of three phase symmetry and asymmetry at the AC access terminal is carried out. The relationship between the characteristics of ripple superposition and the frequency and phase of AC harmonics is established. The simulation results verify the correctness of the theoretical analysis.
【作者單位】： 電力電子節(jié)能與傳動控制河北省重點實驗室(燕山大學);
【基金】：國家自然科學基金項目(51477147) 河北省教育廳資助科研項目(QN2015124)~~
【分類號】：TM721.1
，

本文編號：2179958