發(fā)布時(shí)間：2018-04-01 12:35

  本文選題：風(fēng)電　切入點(diǎn)：儲能系統(tǒng)　出處：《華中科技大學(xué)》2014年碩士論文

【摘要】：隨著經(jīng)濟(jì)的快速發(fā)展，環(huán)境問題以及能源短缺的問題愈發(fā)突出，所以開發(fā)利用新能源已成為各國實(shí)現(xiàn)可持續(xù)發(fā)展的戰(zhàn)略之一。風(fēng)能是一種清潔、無污染、可再生能源，而且風(fēng)力發(fā)電技術(shù)已經(jīng)相當(dāng)?shù)某墒�，所以我國已�?jīng)把可再生能源的利用特別是風(fēng)力發(fā)電列為實(shí)現(xiàn)我國能源、電力和經(jīng)濟(jì)社會可持續(xù)發(fā)展戰(zhàn)略的重要組成之一。 風(fēng)力發(fā)電并網(wǎng)能夠最大限度的利用風(fēng)能，但是由于風(fēng)能的隨機(jī)性和間歇性，而且風(fēng)速預(yù)測存在誤差而造成風(fēng)電功率輸出的不可控性和不可預(yù)期性，因而風(fēng)電接入電網(wǎng)后，波動的風(fēng)電功率已引起電網(wǎng)的頻率的波動，威脅電力系統(tǒng)安全運(yùn)行，同時(shí)風(fēng)電場的功率波動會產(chǎn)生電壓的波動和閃變，影響電能質(zhì)量。 分布式發(fā)電相對于傳統(tǒng)集中大電網(wǎng)的優(yōu)勢使其已成為電力系統(tǒng)的研究熱點(diǎn)，而微電網(wǎng)能夠滿足負(fù)荷所需求的多樣化的電能質(zhì)量要求、提高供電的可靠性已成為世界各國非常重視的電網(wǎng)發(fā)展形式�，F(xiàn)代電力電子技術(shù)和儲能技術(shù)的都取得了快速的發(fā)展，將儲能系統(tǒng)應(yīng)用于風(fēng)力發(fā)電中，能夠有效的解決風(fēng)電并網(wǎng)難的問題。 本文主要研究對象為并網(wǎng)變換器，針對風(fēng)電場功率波動采用低通濾波器的方法研究通過儲能系統(tǒng)的快速充放電對于減小風(fēng)電功率波動、提高供電質(zhì)量的作用機(jī)理，同時(shí)針對微網(wǎng)風(fēng)電儲能系統(tǒng)在故障、孤島、孤島到再并網(wǎng)情況提出了控制策略，故障情況下發(fā)出無功提高系統(tǒng)電壓進(jìn)而提升電網(wǎng)穩(wěn)定性；孤島情況下保證本地負(fù)荷的供電；孤網(wǎng)到再并網(wǎng)運(yùn)行以實(shí)現(xiàn)風(fēng)能的最大利用；搭建了仿真平臺并進(jìn)行了完整而相關(guān)的仿真驗(yàn)證，，驗(yàn)證所提出控制策略的正確有效性。最后針對儲能平抑風(fēng)電功率波動搭建了動模試驗(yàn)平臺，進(jìn)行了相關(guān)的硬件和軟件設(shè)計(jì)，提出動�？刂撇呗�，以實(shí)驗(yàn)驗(yàn)證儲能對于減小風(fēng)電功率波動的作用效果。
[Abstract]:With the rapid development of economy, the problems of environment and energy shortage become more and more prominent. Therefore, the development and utilization of new energy has become one of the strategies to achieve sustainable development. Wind energy is a clean, pollution-free, renewable energy. And wind power generation technology has been quite mature, so China has made the use of renewable energy, especially wind power, as one of the important components of sustainable development strategy of energy, electricity and economic and social development in China. Wind power generation can maximize the use of wind energy, but because of the randomness and intermittency of wind energy and the error of wind speed prediction, wind power output is uncontrollable and unpredictable, so wind power is connected to the power grid. The fluctuating wind power has caused the frequency fluctuation of the power grid and threatened the safe operation of the power system. At the same time, the fluctuation of the wind farm power will produce voltage fluctuation and flicker, which will affect the power quality. Compared with the traditional centralized power grid, distributed generation has become a hot spot in power system research, and micro-grid can meet the diverse power quality requirements of load demand. Improving the reliability of power supply has become a very important form of power grid development in the world. The modern power electronics technology and energy storage technology have made rapid development, and the energy storage system has been applied to wind power generation. Can effectively solve the problem of wind power grid difficulties. In this paper, the main research object is grid-connected converter. The low-pass filter method is used to study the mechanism of reducing the fluctuation of wind power and improving the quality of power supply through the rapid charge and discharge of energy storage system. At the same time, the control strategy of micro-grid wind energy storage system is put forward in the case of fault, isolated island, isolated island to reconnected grid, in which reactive power is issued to increase system voltage, and power supply of local load is guaranteed under isolated island condition. In order to realize the maximum utilization of wind energy, a simulation platform is set up and a complete and relevant simulation is carried out. Finally, a dynamic model test platform is set up for energy storage to suppress the fluctuation of wind power. The related hardware and software design is carried out, and the dynamic model control strategy is put forward. The effect of energy storage on reducing the fluctuation of wind power is verified by experiments.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM46

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