本文關(guān)鍵詞： 風(fēng)電功率 組合儲(chǔ)能系統(tǒng) 控制策略 頻率 聯(lián)絡(luò)線功率 綜合效益　出處：《華北電力大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：在環(huán)境和能源雙重壓力下發(fā)展起來的可再生能源展示出強(qiáng)勢(shì)的發(fā)展前景,世界各國都對(duì)可再生能源的開發(fā)利用予以高度重視,尤其是對(duì)風(fēng)能、太陽能等便利清潔能源的大力支持。風(fēng)能作為目前最具有大規(guī)模商業(yè)化、行業(yè)化開發(fā)潛能的清潔可再生能源,大規(guī)模開發(fā)利用的最直接途徑就是風(fēng)力發(fā)電并上網(wǎng)售電,但是由于風(fēng)速的無規(guī)則變化使得風(fēng)機(jī)輸出功率特性表現(xiàn)出波動(dòng)性和間歇性,這會(huì)對(duì)電網(wǎng)穩(wěn)定運(yùn)行造成不利影響,使得風(fēng)電并網(wǎng)能力受到限制。因此在保證電網(wǎng)安全穩(wěn)定運(yùn)行的前提下,解決風(fēng)電出力波動(dòng),提高風(fēng)電并網(wǎng)率成為現(xiàn)階段需要解決的關(guān)鍵問題。 本文的研究目的是通過組合不同類型儲(chǔ)能技術(shù)的優(yōu)點(diǎn)實(shí)現(xiàn)快速、大容量、經(jīng)濟(jì)儲(chǔ)能,從而平抑風(fēng)電輸出功率波動(dòng),減小風(fēng)電并網(wǎng)對(duì)電力系統(tǒng)的不利影響,實(shí)現(xiàn)儲(chǔ)能系統(tǒng)的經(jīng)濟(jì)高效利用。 首先,本文研究了現(xiàn)階段世界風(fēng)電發(fā)展現(xiàn)狀和風(fēng)電波動(dòng)特性對(duì)電網(wǎng)的不利影響,提出儲(chǔ)能的必要性。在風(fēng)電波動(dòng)功率分解的基礎(chǔ)上提出對(duì)儲(chǔ)能設(shè)備的不同需求,提出不同儲(chǔ)能技術(shù)組合運(yùn)行的可行性。 其次,本文從功率型和容量型分類,介紹了超級(jí)電容儲(chǔ)能和抽水蓄能儲(chǔ)能技術(shù)各自的特點(diǎn),并對(duì)單一儲(chǔ)能技術(shù)進(jìn)行了仿真分析,提出一種基于容量閾值區(qū)間配合的組合儲(chǔ)能運(yùn)行策略。 然后,利用MATLAB/Simulink仿真軟件對(duì)組合運(yùn)行策略進(jìn)行模擬仿真,在微網(wǎng)孤島運(yùn)行模式下分析儲(chǔ)能系統(tǒng)組合運(yùn)行控制策略對(duì)頻率的影響；并網(wǎng)運(yùn)行模式下分析儲(chǔ)能系統(tǒng)對(duì)聯(lián)絡(luò)線功率調(diào)節(jié)的作用。 最后,本文提出一種評(píng)價(jià)超級(jí)電容—抽水蓄能儲(chǔ)能系統(tǒng)成本和經(jīng)濟(jì)效益的模型,給出儲(chǔ)能系統(tǒng)綜合效益的各評(píng)價(jià)因子數(shù)學(xué)模型,為風(fēng)-儲(chǔ)系統(tǒng)的成本與綜合效益分析提出了一種評(píng)價(jià)方法。
[Abstract]:Renewable energy developed under the dual pressure of environment and energy shows a strong development prospects. Countries all over the world attach great importance to the development and utilization of renewable energy, especially wind energy. Solar energy and other convenient clean energy support. Wind energy as the most large-scale commercialization, industry development potential of clean and renewable energy. The most direct way of large-scale development and utilization is wind power generation and online electricity sales, but because of the irregular variation of wind speed, the output power characteristics of the fan show volatility and intermittence. This will have a negative impact on the stable operation of the grid, which limits the ability of wind power grid connection. Therefore, under the premise of ensuring the safe and stable operation of the power grid, wind power generation fluctuations can be solved. Improving wind power grid connection rate has become a key problem to be solved at the present stage. The purpose of this paper is to achieve fast, large capacity and economical energy storage by combining the advantages of different types of energy storage technology, thus to stabilize the fluctuation of wind power output power and reduce the adverse impact of wind power grid connection on the power system. The economic and efficient utilization of energy storage system is realized. First of all, this paper studies the current situation of wind power development in the world and the adverse effects of wind power fluctuation characteristics on the power grid. The necessity of energy storage is put forward. Based on the decomposition of fluctuating power of wind power, different requirements for energy storage equipment are put forward, and the feasibility of combined operation of different energy storage technologies is put forward. Secondly, according to the classification of power type and capacity type, this paper introduces the characteristics of super capacitor energy storage technology and pumped storage energy storage technology, and simulates the single energy storage technology. A combined energy storage operation strategy based on capacity threshold interval matching is proposed. Then, MATLAB/Simulink simulation software is used to simulate the combined operation strategy, and the influence of the combined operation control strategy on the frequency of the energy storage system is analyzed under the microgrid islanding operation mode. The effect of energy storage system on tie-line power regulation is analyzed in grid-connected operation mode. Finally, this paper presents a model to evaluate the cost and economic benefits of the super-capacitance-pumped storage system, and gives the mathematical models of the comprehensive benefit of the energy storage system. This paper presents an evaluation method for cost and comprehensive benefit analysis of wind-storage system.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM53

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