本文選題：柴油發(fā)電機組 + 獨立微網(wǎng)　； 參考：《電工技術學報》2017年23期

【摘要】：針對由可再生能源發(fā)電系統(tǒng)、常規(guī)柴油發(fā)電機組(DGS)和蓄電池儲能系統(tǒng)組成的獨立微網(wǎng),提出一種適合微網(wǎng)在孤島模式下穩(wěn)定運行的虛擬同步發(fā)電機(VSG)控制策略。首先,建立DGS在同步旋轉坐標系下的數(shù)學模型,并分析其輸出電壓和轉速的階躍響應特性;其次,在充分考慮DGS和VSG不同控制特性的基礎上,提出一種適應獨立微網(wǎng)分層協(xié)調控制的改進型VSG策略;然后,在基本VSG控制器中增加虛擬阻抗環(huán)節(jié),靈活實現(xiàn)對微網(wǎng)諧波的抑制;最后,建立一套包含2臺100 k V·A VSG及1臺440 k W DGS并聯(lián)的獨立微網(wǎng)實驗平臺,實驗結果驗證了所述控制策略的正確性與有效性。
[Abstract]:Aiming at the independent microgrid composed of renewable energy generation system, conventional diesel generator unit DGSand battery energy storage system, a virtual synchronous generator (VSGG) control strategy suitable for the stable operation of microgrid in isolated island mode is proposed. Firstly, the mathematical model of DGS in synchronous rotating coordinate system is established, and the step response characteristics of its output voltage and rotational speed are analyzed. Secondly, on the basis of fully considering the different control characteristics of DGS and VSG, This paper proposes an improved VSG strategy for independent microgrid hierarchical coordination control. Then, virtual impedance is added to the basic VSG controller, and the harmonic suppression of microgrid is realized flexibly. Finally, A set of independent microgrid experiment platform including 2 parallel k V A VSG and 1 440 k W DGS parallel is established. The experimental results show that the proposed control strategy is correct and effective.
【作者單位】： 合肥工業(yè)大學電氣與自動化工程學院;陽光電源股份有限公司;
【基金】：國家高技術研究發(fā)展計劃(863計劃)(2015AA050607) 國家重點研發(fā)計劃(2016YFB0900300)資助項目
【分類號】：TM31
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本文編號：1970459