本文選題：分布式電源 + 有功平抑�。� 參考：《昆明理工大學(xué)》2014年碩士論文

【摘要】：隨著全球能源的日益嚴(yán)峻和環(huán)境問(wèn)題的日益嚴(yán)重,可再生能源的出現(xiàn)成為緩解當(dāng)前能源和環(huán)境問(wèn)題的重要途徑之一,分布式發(fā)電和微電網(wǎng)是可再生能源利用的重要形式。在眾多形式的分布式電源中,分布式光伏發(fā)電(distributed photovoltaic generation,簡(jiǎn)稱DPVG)系統(tǒng)因其具有無(wú)污染、可再生、成本低、更靈活、更容易維護(hù)、模塊化集成,容量可大可小,擴(kuò)容方便,安裝快速、可與建筑結(jié)合構(gòu)成光伏建筑一體化等諸多優(yōu)點(diǎn)而受到了各國(guó)電網(wǎng)機(jī)構(gòu)的重視,并且對(duì)于發(fā)展清潔能源和節(jié)能減排起到很大的推動(dòng)作用。然而,分布式光伏發(fā)電受太陽(yáng)輻照度和天氣變化的影響,本身具有很強(qiáng)的隨機(jī)性、波動(dòng)性和間歇性,且隨著分布式光伏系統(tǒng)規(guī)模的不斷擴(kuò)大,上述隨機(jī)性、波動(dòng)性和間歇性勢(shì)必會(huì)給電網(wǎng)的安全穩(wěn)定運(yùn)行帶來(lái)沖擊。因此,為了更加有效利用分布式光伏發(fā)電、提高供電可靠性和改善電能質(zhì)量,本文采用光儲(chǔ)微電網(wǎng)的形式將分布式光伏發(fā)電“友好地”接入電網(wǎng),微電網(wǎng)系統(tǒng)由分布式光伏電源、儲(chǔ)能以及本地負(fù)荷構(gòu)成。 本文在光儲(chǔ)微電網(wǎng)系統(tǒng)建模和功率調(diào)控方面進(jìn)行了研究。分布式光儲(chǔ)微電網(wǎng)系統(tǒng)建模是以三相光伏并網(wǎng)發(fā)電系統(tǒng)的控制策略為研究對(duì)象,分析其工作原理并建立數(shù)學(xué)模型,針對(duì)光伏陣列的最大功率點(diǎn)跟蹤方法、兩級(jí)式并網(wǎng)發(fā)電系統(tǒng)和儲(chǔ)能充放電的控制策略等問(wèn)題進(jìn)行研究。而功率調(diào)控則是對(duì)光伏出力隨機(jī)性、波動(dòng)性的解決,所做工作包括了光伏并網(wǎng)發(fā)電、基于儲(chǔ)能的有功平抑以及微電網(wǎng)發(fā)電系統(tǒng)的無(wú)功補(bǔ)償特性。分布式光儲(chǔ)微電網(wǎng),不僅可以充分發(fā)揮光伏發(fā)電的資源、環(huán)境優(yōu)勢(shì),還能有效克服光伏發(fā)電的隨機(jī)波動(dòng)特性,減少其對(duì)電網(wǎng)的沖擊；而微電網(wǎng)發(fā)電系統(tǒng)的無(wú)功補(bǔ)償特性則是為了保證整個(gè)微電網(wǎng)系統(tǒng)能夠更經(jīng)濟(jì)、可靠地運(yùn)行,不僅能實(shí)現(xiàn)微電網(wǎng)發(fā)電和無(wú)功補(bǔ)償?shù)慕y(tǒng)一控制,更讓微電網(wǎng)系統(tǒng)具有了一定的低電壓穿越能力。
[Abstract]:With the increasing severity of global energy and environmental problems, the emergence of renewable energy has become one of the most important ways to alleviate the current energy and environmental problems. Distributed generation and microgrid are important forms of renewable energy utilization. In many forms of distributed power generation, distributed photovoltaic generation system for distributed photovoltaic power generation has the advantages of pollution-free, renewable, low cost, more flexible, easier to maintain, modular integration, large and small capacity, convenient expansion, and quick installation. The integration of photovoltaic buildings and other advantages, which can be combined with buildings, has been attached great importance by the power grid organizations in various countries, and has played a great role in promoting the development of clean energy and energy saving and emission reduction. However, the distributed photovoltaic power generation is affected by solar irradiance and weather change, and has strong randomness, volatility and intermittency, and with the continuous expansion of the scale of distributed photovoltaic system, the randomness mentioned above. Volatility and intermittency will inevitably impact the safe and stable operation of the power grid. Therefore, in order to make more effective use of distributed photovoltaic power generation, improve the reliability of power supply and improve the power quality, this paper adopts the form of optical storage microgrid to connect distributed photovoltaic generation to the grid "friendly". The microgrid system is composed of distributed photovoltaic generation, energy storage and local load. In this paper, the modeling and power regulation of optical microgrid system are studied. The modeling of distributed optical storage microgrid system is based on the control strategy of three-phase photovoltaic grid-connected generation system. The working principle and mathematical model are analyzed and the maximum power point tracking method for photovoltaic array is established. The two-stage grid-connected generation system and the control strategy of energy storage charge and discharge are studied. The power regulation is to solve the randomness and volatility of photovoltaic power generation. The work includes photovoltaic grid-connected power generation, active power stabilization based on energy storage and reactive power compensation characteristics of micro-grid power generation system. Distributed optical microgrid can not only give full play to the resources and environmental advantages of photovoltaic power generation, but also effectively overcome the random fluctuation characteristics of photovoltaic power generation and reduce its impact on the grid. The reactive power compensation characteristic of micro-grid generation system is to ensure that the whole micro-grid system can operate more economically and reliably, and not only can realize the unified control of micro-grid generation and reactive power compensation. The microgrid system has a certain low voltage traversing capability.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM615

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