本文選題：微網(wǎng) + 電池儲(chǔ)能系統(tǒng)�。� 參考：《天津大學(xué)》2014年博士論文

【摘要】：在含有大量光伏、風(fēng)電等可再生能源的微網(wǎng)中，電池儲(chǔ)能系統(tǒng)是其重要組成部分。論文針對(duì)提高電網(wǎng)接納可再生能源發(fā)電能力和增強(qiáng)微網(wǎng)供電可靠性的需要，圍繞電池儲(chǔ)能系統(tǒng)的控制方法，研究了可以有效地抑制可再生能源輸出功率波動(dòng)的電池儲(chǔ)能系統(tǒng)并網(wǎng)時(shí)的控制策略和可以提高微網(wǎng)供電可靠性的電池儲(chǔ)能系統(tǒng)離網(wǎng)時(shí)的下垂控制策略，并進(jìn)行了相應(yīng)的仿真驗(yàn)證。論文具體工作如下： （1）針對(duì)光伏、風(fēng)電等可再生能源輸出功率波動(dòng)性大且隨機(jī)性強(qiáng)的特點(diǎn)，在計(jì)及電池使用壽命等約束基礎(chǔ)上，提出了一種基于實(shí)測(cè)電池荷電狀態(tài)（State ofCharge，SOC）的可變平滑控制時(shí)間常數(shù)儲(chǔ)能控制方法。該方法通過實(shí)時(shí)調(diào)節(jié)儲(chǔ)能系統(tǒng)的輸出功率，對(duì)可再生能源輸出功率中某一特定頻段的波動(dòng)成分進(jìn)行補(bǔ)償，同時(shí)根據(jù)電池的SOC值，對(duì)平滑控制時(shí)間常數(shù)進(jìn)行調(diào)節(jié)，從而使電池的SOC值穩(wěn)定在一定的范圍內(nèi)，避免了電池的過充過放。 （2）提出了一種基于平滑控制的超級(jí)電容與電池混合儲(chǔ)能系統(tǒng)的能量管理方法。該方法分別利用超級(jí)電容與電池補(bǔ)償可再生能源輸出功率波動(dòng)的高頻分量和中低頻分量，并在傳統(tǒng)限值管理的基礎(chǔ)上引入了超級(jí)電容端電壓預(yù)先控制，根據(jù)超級(jí)電容的剩余容量與充放電狀態(tài)對(duì)超級(jí)電容與電池的輸出功率進(jìn)行修正，可有效防止超級(jí)電容因端電壓達(dá)到上下限而停止工作。 （3）分析了線路阻抗對(duì)電池儲(chǔ)能系統(tǒng)離網(wǎng)下垂控制的影響并提出了一種改進(jìn)策略。該控制策略采用基于線路壓降差補(bǔ)償?shù)母倪M(jìn)下垂控制方法，根據(jù)測(cè)量得到的線路阻抗參數(shù)和逆變器出口功率信息，實(shí)時(shí)補(bǔ)償由線路阻抗差異導(dǎo)致的壓降差，從而使儲(chǔ)能逆變器能夠精確地均分有無功負(fù)荷。 （4）推導(dǎo)了包含多儲(chǔ)能逆變器、線路和負(fù)荷的微網(wǎng)整體小信號(hào)模型，并通過特征值分析確定了影響微網(wǎng)穩(wěn)定的關(guān)鍵參數(shù)。揭示了儲(chǔ)能逆變器產(chǎn)生正阻尼的機(jī)理，提出了增加儲(chǔ)能逆變器正阻尼的改進(jìn)下垂控制策略。該方法基于儲(chǔ)能逆變器動(dòng)態(tài)頻率特性的概念，根據(jù)其產(chǎn)生正阻尼作用的相位條件和幅值條件，在傳統(tǒng)下垂控制中加入了附加阻尼控制環(huán)節(jié)。此改進(jìn)方法可以在不影響系統(tǒng)穩(wěn)態(tài)頻率和儲(chǔ)能逆變器輸出功率的前提下，，有效地增加系統(tǒng)的阻尼并抑制儲(chǔ)能逆變器輸出功率的振蕩，增強(qiáng)系統(tǒng)的穩(wěn)定性。
[Abstract]:The battery energy storage system is an important part of the microgrid which contains lots of renewable energy sources such as photovoltaic, wind power and so on.This paper focuses on the control method of battery energy storage system in order to improve the power generation capacity of renewable energy and enhance the reliability of microgrid power supply.The control strategy of the battery energy storage system when connected to the grid and the droop control strategy of the battery energy storage system when it can improve the reliability of the microgrid power supply are studied, which can effectively restrain the fluctuation of the renewable energy output power.And the corresponding simulation verification is carried out.The specific work of the thesis is as follows:1) in view of the high volatility and randomness of the output power of renewable energy, such as photovoltaic and wind power, and taking into account the constraints of battery life,A variable smooth control time constant control method for energy storage is proposed based on the measured state of state of charge SOC.By adjusting the output power of the energy storage system in real time, this method compensates the fluctuating components of a certain frequency band in the output power of renewable energy, and adjusts the smooth control time constant according to the SOC value of the battery.Thus, the SOC value of the battery is stabilized in a certain range, and the overcharge and overdischarge of the battery are avoided.(2) an energy management method based on smooth control for hybrid energy storage system of super capacitor and battery is proposed.The method uses super capacitor and battery to compensate the high frequency component and middle low frequency component of the renewable energy output power fluctuation, and introduces the super capacitor terminal voltage pre-control based on the traditional limit value management.According to the residual capacity and charge-discharge state of the super capacitor, the super capacitor and the output power of the battery can be corrected, which can effectively prevent the super capacitor from working because the terminal voltage reaches the upper and lower limit.The influence of line impedance on the droop control of battery energy storage system is analyzed and an improved strategy is proposed.This control strategy adopts an improved droop control method based on line voltage drop compensation. According to the measured line impedance parameters and inverter outlet power information, the voltage drop caused by line impedance difference is compensated in real time.So that the energy storage inverter can accurately divide the reactive load.(4) the integral small-signal model of microgrid including multi-energy storage inverter, circuit and load is derived, and the key parameters that affect the stability of microgrid are determined by eigenvalue analysis.The mechanism of positive damping of energy storage inverter is revealed, and an improved droop control strategy is proposed to increase the positive damping of energy storage inverter.This method is based on the concept of dynamic frequency characteristics of energy storage inverter. According to the phase condition and amplitude condition of the positive damping effect, the additional damping control link is added to the traditional sag control.This improved method can effectively increase the damping of the system, suppress the oscillation of the output power of the energy storage inverter and enhance the stability of the system without affecting the steady-state frequency of the system and the output power of the energy storage inverter.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM91

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張燕俠;趙世明;王向陽(yáng);魏佳佳;;冰蓄冷空調(diào)技術(shù)應(yīng)用研究[J];安徽電氣工程職業(yè)技術(shù)學(xué)院學(xué)報(bào);2010年03期

2 唐西勝;齊智平;;獨(dú)立光伏系統(tǒng)中超級(jí)電容器蓄電池有源混合儲(chǔ)能方案的研究[J];電工電能新技術(shù);2006年03期

3 郝正航;余貽鑫;;雙饋風(fēng)電場(chǎng)對(duì)電力系統(tǒng)阻尼影響的轉(zhuǎn)矩分析[J];電工技術(shù)學(xué)報(bào);2011年05期

4 唐西勝;鄧衛(wèi);齊智平;;基于儲(chǔ)能的微網(wǎng)并網(wǎng)/離網(wǎng)無縫切換技術(shù)[J];電工技術(shù)學(xué)報(bào);2011年S1期

5 溫春雪;李正熙;;基于虛擬電阻控制環(huán)的并聯(lián)逆變器簡(jiǎn)化控制方法[J];電工技術(shù)學(xué)報(bào);2012年06期

6 梁才浩,段獻(xiàn)忠;分布式發(fā)電及其對(duì)電力系統(tǒng)的影響[J];電力系統(tǒng)自動(dòng)化;2001年12期

7 魯宗相;王彩霞;閔勇;周雙喜;呂金祥;王云波;;微電網(wǎng)研究綜述[J];電力系統(tǒng)自動(dòng)化;2007年19期

8 俞紅祥;沈亞強(qiáng);馬世平;;一種基于超級(jí)電容儲(chǔ)能的新型交流電壓動(dòng)態(tài)調(diào)節(jié)器[J];電力系統(tǒng)自動(dòng)化;2008年01期

9 王成山;肖朝霞;王守相;;微網(wǎng)綜合控制與分析[J];電力系統(tǒng)自動(dòng)化;2008年07期

10 劉昌金;胡長(zhǎng)生;李霄;陳敏;徐德鴻;;基于超導(dǎo)儲(chǔ)能系統(tǒng)的風(fēng)電場(chǎng)功率控制系統(tǒng)設(shè)計(jì)[J];電力系統(tǒng)自動(dòng)化;2008年16期

相關(guān)博士學(xué)位論文 前1條

1 于們;基于混合儲(chǔ)能的風(fēng)電場(chǎng)實(shí)時(shí)功率調(diào)控系統(tǒng)研究[D];大連理工大學(xué);2012年

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