本文選題：可再生能源 + 電壓穩(wěn)定�。� 參考：《上海電機(jī)學(xué)院》2017年碩士論文

【摘要】：可再生能源發(fā)電間歇性、不可預(yù)測性的特點(diǎn)會(huì)導(dǎo)致電網(wǎng)電壓產(chǎn)生波動(dòng)和閃變的現(xiàn)象發(fā)生,使電網(wǎng)受到嚴(yán)重的無功干擾,更甚者,會(huì)導(dǎo)致電網(wǎng)失穩(wěn)。為了解決這類問題,目前應(yīng)用最為廣泛的技術(shù)是無功補(bǔ)償技術(shù),該技術(shù)能夠改善功率因數(shù),鞏固電力系統(tǒng)穩(wěn)定性,但該技術(shù)無法調(diào)節(jié)有功功率;裝設(shè)儲能裝置能夠抵消電網(wǎng)電壓波動(dòng),較好地緩解電力系統(tǒng)壓力,但一次性購置成本較高。此外,電池處理還會(huì)導(dǎo)致環(huán)境污染等問題。為彌補(bǔ)現(xiàn)有技術(shù)的不足,本文研究了一種新型電力電子技術(shù)——電氣彈簧(Electric Springs,簡稱ES),該技術(shù)不僅能夠調(diào)節(jié)無功功率和有功功率,而且能夠降低裝置容量需求,減少成本。本文第一章介紹了ES的研究背景與意義,重點(diǎn)分析了目前常用穩(wěn)壓技術(shù)的利弊,并引出ES技術(shù)的發(fā)展趨勢和前景。第二章通過對比分析傳統(tǒng)機(jī)械彈簧與ES的工作原理,研究了ES理論分析,并同時(shí)探討了電網(wǎng)中非關(guān)鍵負(fù)載比重對ES的局限性影響。第三章在對電網(wǎng)電壓擾動(dòng)分析的背景下,介紹了ES所實(shí)現(xiàn)的無功補(bǔ)償原理,并針對拓?fù)浣Y(jié)構(gòu)容易引發(fā)諧波的缺點(diǎn),提出了優(yōu)化方案。第四章基于PI控制器對ES幅值和相位進(jìn)行的雙閉環(huán)調(diào)控,結(jié)合ES的理論分析和工程經(jīng)驗(yàn)對其參數(shù)進(jìn)行了整定,并通過使用MATLAB/SIMULINK仿真平臺構(gòu)建了ES在無功補(bǔ)償應(yīng)用上的仿真拓?fù)洹７抡鏀?shù)據(jù)表明,ES對波動(dòng)的電網(wǎng)具有良好的穩(wěn)壓效果以及動(dòng)態(tài)無功補(bǔ)償效果。
[Abstract]:The characteristics of intermittent and unpredictability of renewable energy generation will lead to the fluctuation and flicker of power grid voltage, which will lead to serious reactive power disturbance and, worse, the instability of power grid. In order to solve these problems, the most widely used technology is reactive power compensation, which can improve the power factor and consolidate the stability of power system, but it can not adjust the active power. The installation of energy storage device can offset the voltage fluctuation of power system and relieve the pressure of power system, but the one-time purchase cost is higher. In addition, battery treatment will also lead to environmental pollution and other problems. In order to make up for the shortcomings of the prior art, a new type of power electronics technology, Electric Spring (ESN), is studied in this paper. This technology can not only adjust reactive power and active power, but also reduce the demand of device capacity and cost. In the first chapter, the research background and significance of es are introduced, the advantages and disadvantages of current voltage stabilizing technology are analyzed, and the development trend and prospect of es technology are introduced. In the second chapter, by comparing and analyzing the working principle of traditional mechanical spring and es, the theory of es is studied, and the influence of non-critical load proportion on es is discussed at the same time. In the third chapter, under the background of voltage disturbance analysis, the reactive power compensation principle realized by es is introduced, and the optimization scheme is proposed to solve the problem that topology is easy to cause harmonics. In chapter 4, based on the double closed loop control of the amplitude and phase of es by Pi controller, the parameters of es are adjusted based on the theoretical analysis and engineering experience of es, and the simulation topology of es in reactive power compensation is constructed by using MATLAB/SIMULINK simulation platform. The simulation data show that the power system has good voltage stabilization effect and dynamic reactive power compensation effect.
【學(xué)位授予單位】：上海電機(jī)學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM714.3

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