發(fā)布時間：2018-04-25 11:01

  本文選題：太陽能 + 并網(wǎng)發(fā)電��； 參考：《遼寧工程技術(shù)大學》2014年碩士論文

【摘要】：隨著現(xiàn)代經(jīng)濟的不斷發(fā)展進步,不可再生能源將逐漸枯竭,探索新能源對人類的發(fā)展有著重要的意義。太陽能以其自身的優(yōu)勢,是未來可大力開發(fā)利用的清潔新能源,光伏并網(wǎng)發(fā)電技術(shù)的本質(zhì)就是將太陽能發(fā)電系統(tǒng)和電網(wǎng)連接起來,實現(xiàn)光伏發(fā)電并網(wǎng),在此對光伏并網(wǎng)技術(shù)作了進一步研討。首先,對太陽能技術(shù)發(fā)展和利用的背景,以及本文研究的意義進行了說明,對光伏并網(wǎng)的系統(tǒng)結(jié)構(gòu)和重要技術(shù)進行了探討,提出了無變壓器的兩級結(jié)構(gòu)的并網(wǎng)方式。其次,針對并網(wǎng)發(fā)電系統(tǒng)中常見的孤島效應(yīng),本文對反孤島效應(yīng)作了深入研究,對孤島效應(yīng)主動檢測法中主動頻率偏移法和相位偏移法的進行了仿真對比,得出相位偏移法的在孤島檢測上使電網(wǎng)供電的質(zhì)量更高。最后,對于光伏并網(wǎng)策略提出了基于細菌覓食優(yōu)化算法的雙閉環(huán)控制方案,并對設(shè)計方案進行了驗證。設(shè)計了基于TMS320LF2407型號的DSP的單相光伏并網(wǎng)發(fā)電系統(tǒng),對其硬件和軟件進行了分析,為系統(tǒng)的研發(fā)和設(shè)計提供了一個可靠的實驗平臺。
[Abstract]:With the continuous development and progress of modern economy, non-renewable energy will gradually dry up. It is of great significance to explore new energy for the development of human beings. Solar energy, with its own advantages, is a clean and new energy that can be developed and utilized in the future. The essence of photovoltaic grid-connected power generation technology is to connect solar power generation system with power grid to realize grid-connected photovoltaic power generation. In this paper, the photovoltaic grid-connected technology is further discussed. Firstly, the background of the development and utilization of solar energy technology and the significance of the research in this paper are explained, the system structure and important technology of grid-connected photovoltaic system are discussed, and the grid-connected mode of two-stage structure without transformer is put forward. Secondly, aiming at the common islanding effect in grid-connected power generation system, the anti-islanding effect is deeply studied in this paper, and the active frequency offset method and the phase offset method in the active detection method of islanding effect are simulated and compared. It is concluded that the phase shift method can improve the quality of power supply in islanding detection. Finally, a double closed loop control scheme based on bacterial foraging optimization algorithm is proposed for photovoltaic grid-connected strategy, and the design scheme is verified. The single-phase photovoltaic grid-connected generation system based on TMS320LF2407 model DSP is designed, and its hardware and software are analyzed, which provides a reliable experimental platform for the research and design of the system.
【學位授予單位】：遼寧工程技術(shù)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM615

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