發(fā)布時(shí)間：2018-06-22 04:40

  本文選題：虛擬同步發(fā)電機(jī) + 慣性和阻尼��； 參考：《電力系統(tǒng)自動(dòng)化》2017年10期

【摘要】：針對(duì)并網(wǎng)逆變器的虛擬同步發(fā)電機(jī)(VSG)控制,提出了一種VSG實(shí)際輸出慣性和阻尼的辨識(shí)方法,以定量量化VSG參與電網(wǎng)調(diào)節(jié)能力的強(qiáng)弱�；赩SG的二階非線性模型,及其在工作點(diǎn)附近的小信號(hào)攝動(dòng)處理,建立了VSG的線性化傳遞函數(shù)模型,給出了其離散化模型及其與VSG慣性和阻尼參數(shù)之間的關(guān)系,分析了線性化模型的誤差大小和適用范圍。利用VSG的輸出功率階躍擾動(dòng),激勵(lì)出VSG的功率振蕩模態(tài)信息,并利用最小二乘估計(jì)的方法,辨識(shí)出VSG實(shí)際輸出的慣性和阻尼參數(shù)。最后,針對(duì)并網(wǎng)逆變器的常規(guī)控制方法和VSG控制方法,利用仿真分析和實(shí)驗(yàn)結(jié)果,驗(yàn)證了所提模型和方法的可行性和有效性。
[Abstract]:Aiming at the virtual synchronous generator (VSG) control of grid-connected inverter, a method of identifying the actual output inertia and damping of VSG is proposed to quantify quantitatively the ability of VSG to participate in power grid regulation. Based on the second order nonlinear model of VSG and its small signal perturbation processing near the working point, the linearized transfer function model of VSG is established, and its discretization model and its relationship with the inertia and damping parameters of VSG are given. The error and application range of the linearization model are analyzed. The output power step disturbance of VSG is used to excite the mode information of VSG power oscillation, and the inertia and damping parameters of VSG output are identified by using the least square estimation method. Finally, the feasibility and effectiveness of the proposed model and method are verified by simulation analysis and experimental results for the conventional control method and VSG control method of grid-connected inverter.
【作者單位】： 輸配電裝備及系統(tǒng)安全與新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室(重慶大學(xué));
【基金】：重慶市基礎(chǔ)科學(xué)與前沿技術(shù)研究專(zhuān)項(xiàng)資助項(xiàng)目(cstc2016jcyjA0108) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金資助項(xiàng)目(106112015CDJXY150005) 國(guó)家電網(wǎng)公司科技項(xiàng)目(SGHADK00PJJS1500060)~~
【分類(lèi)號(hào)】：TM31
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本文編號(hào)：2051632