發(fā)布時(shí)間：2018-07-05 09:03

  本文選題：超導(dǎo)磁儲(chǔ)能 + 風(fēng)電并網(wǎng)�。� 參考：《蘭州理工大學(xué)》2017年碩士論文

【摘要】：隨著風(fēng)力發(fā)電在電力系統(tǒng)中所占的位置越來(lái)越重要,風(fēng)機(jī)并網(wǎng)的穩(wěn)定性也愈發(fā)重要。但由于風(fēng)機(jī)出力的不確定性,時(shí)常會(huì)引發(fā)電力系統(tǒng)的功率振蕩,嚴(yán)重時(shí)會(huì)致使電力系統(tǒng)解列,造成國(guó)民經(jīng)濟(jì)的巨大損失。而超導(dǎo)磁儲(chǔ)能裝置作為一種反應(yīng)迅速且靈敏的功率補(bǔ)償裝置,可以有效的將功率振蕩控制在可承受的范圍之內(nèi),在一定程度上提高風(fēng)電并網(wǎng)系統(tǒng)的穩(wěn)定性。超導(dǎo)磁儲(chǔ)能裝置對(duì)系統(tǒng)補(bǔ)償有功和無(wú)功功率的能力與其控制策略有著緊密的聯(lián)系,所以對(duì)其如何更好的控制就成為了一個(gè)非常關(guān)鍵的研究課題。第一部分,本文首先分析風(fēng)力發(fā)電機(jī)并網(wǎng)運(yùn)行時(shí)對(duì)電網(wǎng)總阻尼的影響。依據(jù)負(fù)阻尼機(jī)理以阻尼控制為目標(biāo),對(duì)接下來(lái)的研究做了理論鋪墊,使其有了充足的理論依據(jù)。第二部分,對(duì)超導(dǎo)磁儲(chǔ)能裝置的工作原理進(jìn)行了闡述,分析建立了其數(shù)學(xué)模型并對(duì)模型進(jìn)行了一定的改進(jìn)�？紤]了在實(shí)際并網(wǎng)系統(tǒng)中的應(yīng)用限制等問(wèn)題,建立了改進(jìn)的模型并對(duì)其進(jìn)行了初步的仿真分析。第三部分,從能量耗散的角度入手,對(duì)超導(dǎo)磁儲(chǔ)能裝置的等效模型進(jìn)行了理論分析,根據(jù)第一部分研究的理論,研究了超導(dǎo)磁儲(chǔ)能裝置的等效參數(shù)與系統(tǒng)阻尼之間的關(guān)系,通過(guò)理論推導(dǎo),建立了控制超導(dǎo)磁儲(chǔ)能裝置補(bǔ)償系統(tǒng)功率的內(nèi)外環(huán)控制策略并進(jìn)行了仿真分析。第四部分,在MATLAB軟件的Simulink工具包中建立接入超導(dǎo)磁儲(chǔ)能裝置的系統(tǒng)模型,對(duì)超導(dǎo)磁儲(chǔ)能裝置的控制方法采用新建立的接入阻尼控制策略和傳統(tǒng)的控制策略進(jìn)行分別的仿真分析,結(jié)果表明本文建立的控制策略比傳統(tǒng)控制策略在響應(yīng)時(shí)間和靈敏度上更具由優(yōu)勢(shì),從而在一定程度上證明了本文研究的科學(xué)性。
[Abstract]:With the increasing importance of wind power generation in power system, the stability of wind turbine is becoming more and more important. However, due to the uncertainty of fan output, power oscillation of power system is often caused, and when serious, it will cause the power system to be decomposed, resulting in huge loss of national economy. As a rapid and sensitive power compensation device, the superconducting magnetic energy storage device can effectively control the power oscillation within the acceptable range, and to a certain extent improve the stability of wind power grid-connected system. The ability of superconducting magnetic energy storage device to compensate the active and reactive power of the system is closely related to its control strategy, so how to better control it has become a very key research topic. In the first part, the influence of wind turbine on the total damping of power grid is analyzed. According to the negative damping mechanism, damping control is taken as the goal, and the following research is laid in theory, which makes it have sufficient theoretical basis. In the second part, the working principle of superconducting magnetic energy storage device is expounded, its mathematical model is established and the model is improved. Considering the limitation of application in the practical grid-connected system, the improved model is established and the preliminary simulation analysis is carried out. In the third part, from the angle of energy dissipation, the equivalent model of superconducting magnetic energy storage device is theoretically analyzed. According to the theory of the first part, the relationship between the equivalent parameters of superconducting magnetic energy storage device and system damping is studied. The internal and external loop control strategy for the power compensation system of superconducting magnetic energy storage device is established by theoretical derivation, and the simulation analysis is carried out. In the fourth part, the system model of the superconducting magnetic energy storage device is established in the Simulink toolkit of MATLAB software. The control method of the superconducting magnetic energy storage device adopts the newly established access damping control strategy and the traditional control strategy to carry on the simulation analysis separately. The results show that the proposed control strategy has more advantages in response time and sensitivity than the traditional control strategy, which to some extent proves the scientific nature of this study.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM614;TM712

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