本文選題：分布式電源 + 接納能力��； 參考：《天津大學》2014年碩士論文

【摘要】：由于化石能源的逐漸枯竭和環(huán)境污染的日益嚴重,開發(fā)以風能、太陽能為代表的各類可再生能源,已經成為人類社會實現長期可持續(xù)發(fā)展的必然選擇。但由于分布式電源出力具有隨機性、波動性和間歇性等特征,因此分布式電源的高滲透率接入會給配電網的穩(wěn)定運行帶來深刻的影響,研究配電網對分布式電源的最大接納能力對配電網的規(guī)劃、運行以及分布式電源的廣泛應用具有重要意義。本文考慮到分布式電源和負荷的運行特性對配電系統(tǒng)的影響,對配網接納能力進行了較深入而系統(tǒng)的研究。本文首先對含分布式電源的智能配電網運行模擬的建模與仿真技術進行研究,著重分析了不同類型的分布式電源和控制元件的建模方法和考慮出力波動性的運行潮流分析方法。其次分析了分布式電源接入對配電網電壓的影響,提出了計及電壓水平和支路容量約束條件的智能配電網分布式電源接納能力數學模型,同時考慮了分布式電源出力和負荷需求的運行約束對接納能力的影響,根據模型的特點,提出了一種改進的模式搜索算法和基于蒙特卡洛的隨機方法對接納能力問題進行求解。最后,為了解決分布式電源接入所引起的電壓越限問題,提出了一種基于儲能裝置的平滑功率的協(xié)調控制策略,以進一步提高配網的接納能力。算例分析表明:分布式電源接入對配網運行帶來深刻影響,本文提出的考慮運行約束的智能配電網分布式電源接納能力模型準確有效,所提出的一種改進的模式搜索算法和基于蒙特卡洛的隨機方法二者相互印證,能夠對上述數學模型進行準確可靠地求解,基于儲能裝置的平滑功率的控制策略可以改善系統(tǒng)電壓水平,有效緩解電壓越限問題。
[Abstract]:Due to the depletion of fossil energy and the increasingly serious environmental pollution, the development of renewable energy, represented by wind energy and solar energy, has become an inevitable choice for the long-term sustainable development of human society. However, due to the randomness, volatility and intermittency of the distributed power generation, the high permeability access of the distributed generation will have a profound impact on the stable operation of the distribution network. It is of great significance to study the maximum acceptance capacity of distribution network for distribution network planning, operation and wide application of distributed generation. Considering the influence of distributed power generation and load characteristics on distribution system, this paper makes a deep and systematic study on the distribution network admission capacity. In this paper, the modeling and simulation technology of intelligent distribution network operation simulation with distributed power supply is studied, and the modeling methods of different types of distributed power supply and control elements and the operation power flow analysis method considering force fluctuation are analyzed. Secondly, the influence of distributed power supply access on distribution network voltage is analyzed, and a mathematical model of intelligent distribution network distributed power acceptance capacity considering voltage level and branch capacity constraints is proposed. At the same time, considering the influence of the operating constraints of distributed power generation and load requirements on the admission capacity, an improved pattern search algorithm and a stochastic method based on Monte Carlo are proposed to solve the admission capacity problem. Finally, in order to solve the problem of voltage overrun caused by distributed power access, a coordinated control strategy based on the smooth power of energy storage device is proposed to further improve the admission capacity of the distribution network. The example analysis shows that the distributed power access has a profound impact on the distribution network operation, and the model proposed in this paper, which considers the operation constraints, is accurate and effective. An improved pattern search algorithm and a stochastic method based on Monte Carlo are proposed to verify each other, and the above mathematical model can be solved accurately and reliably. The control strategy based on the smooth power of energy storage device can improve the voltage level of the system and effectively alleviate the problem of voltage overrun.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM732

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