基于直流電氣彈簧的直流配電網(wǎng)電壓波動(dòng)抑制
[Abstract]:DC distribution network is directly oriented to DC power supply equipment, which is convenient to realize the grid integration of renewable energy and the efficient use of DC load, so it has an important application prospect. In order to reduce the voltage fluctuation caused by renewable energy in DC distribution network, the concept of direct current gas spring is proposed in this paper. The power electronic converter is used to adjust the controllable load in the DC distribution network, which follows the fluctuation and uncertainty of the renewable energy output, realizes the local balance of the fluctuating power, and avoids the intermittent power flow transmission on the distribution line. Thus the voltage fluctuation of DC distribution network is effectively restrained. For a typical DC distribution network, on the basis of establishing physical model and circuit model, the causes of voltage fluctuation and its influencing factors are analyzed by mathematical model. Then, the mathematical model, parameter design, control strategy and effective boundary conditions of DC gas spring are put forward to stabilize the voltage fluctuation of DC distribution network. Finally, PSCAD/EMTDC simulation is used to verify the correctness and effectiveness of the proposed control method.
【作者單位】: 輸配電裝備及系統(tǒng)安全與新技術(shù)國家重點(diǎn)實(shí)驗(yàn)室(重慶大學(xué));國網(wǎng)江蘇省電力公司經(jīng)濟(jì)技術(shù)研究院;中國電力科學(xué)研究院;
【基金】:國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973項(xiàng)目)(2012CB215200) 中央高;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)基金(106112015CDJXY150005,CDJZR12150074)資助項(xiàng)目
【分類號(hào)】:TM721.1
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