本文選題：微電網(wǎng) + 儲能單元��； 參考：《南京郵電大學》2017年碩士論文

【摘要】：近年來,微電網(wǎng)得到了廣泛的關注和快速的發(fā)展,微電網(wǎng)是智能電網(wǎng)的重要組成部分。接入微電網(wǎng)是風能、太陽能等可再生能源發(fā)電的重要利用方式,但是可再生能源發(fā)電的間歇性和負荷需求的隨機性所帶來的影響給微電網(wǎng)功率平衡帶來了新的挑戰(zhàn),尤其是在風能和太陽能高滲透率的情況下。對于自治的微電網(wǎng)來說,當可再生能源發(fā)電的功率波動導致發(fā)電量不等于總的負荷需求時,會導致功率不平衡問題。引入儲能單元可以有效解決由可再生能源發(fā)電間歇性和負荷需求隨機性引起微電網(wǎng)的功率不平衡問題。本文致力于通過分布式優(yōu)化算法解決微電網(wǎng)中儲能單元的功率平衡控制問題。具體工作如下:1)由于分布式控制策略的經(jīng)濟性、靈活性和魯棒性,提出一種基于分布式梯度算法的儲能單元控制策略以實現(xiàn)微電網(wǎng)功率平衡。本策略的控制目標是最小化儲能系統(tǒng)充放電過程中的總功率損耗,并且考慮了儲能單元充放電效率與其充放電功率和荷電狀態(tài)(SOC)的線性關系。2)基于儲能單元的等效電路模型,提出一種考慮內阻的微電網(wǎng)儲能單元功率平衡控制策略。對微電網(wǎng)儲能單元充電優(yōu)化問題進行建模分析,并利用分布式算法對所建立模型進行優(yōu)化求解。3)基于微電網(wǎng)儲能單元功率平衡控制模型,提出一種抵御網(wǎng)絡攻擊的微電網(wǎng)儲能單元分布式功率平衡控制策略。分析了微電網(wǎng)的網(wǎng)絡控制系統(tǒng)分別在有無網(wǎng)絡攻擊時儲能單元的響應情況,并設計抵御網(wǎng)絡攻擊的微電網(wǎng)儲能單元分布式功率平衡控制策略。本文通過MATLAB仿真分析實現(xiàn)了每一項工作中的結果驗證,通過仿真與分析得出每一項工作中所提出策略的有效性。
[Abstract]:In recent years, microgrid has received extensive attention and rapid development. Microgrid is an important part of smart grid. Access to microgrid is an important use of renewable energy generation, such as wind energy and solar energy, but the impact of intermittent renewable energy generation and randomness of load demand brings new challenges to the power balance of microgrid. Especially in the case of high wind and solar penetration. For autonomous microgrid, when the power fluctuation of renewable energy generation results in the power generation is not equal to the total load demand, it will lead to the power imbalance problem. The introduction of energy storage units can effectively solve the power imbalance problem of microgrid caused by the intermittent generation of renewable energy and the randomness of load demand. This paper is devoted to solving the power balance control problem of energy storage unit in microgrid by distributed optimization algorithm. Because of the economy, flexibility and robustness of the distributed control strategy, a distributed gradient algorithm based energy storage unit control strategy is proposed to achieve power balance in microgrid. The control goal of this strategy is to minimize the total power loss in the charging and discharging process of the energy storage system, and to consider the linear relationship between the charge and discharge efficiency of the energy storage unit and its charge / discharge power and the charged state of SOC. 2) based on the equivalent circuit model of the energy storage unit, the control goal of this strategy is to minimize the total power loss in the charging and discharging process of the energy storage system. This paper presents a power balance control strategy for energy storage unit in microgrid considering internal resistance. Based on the power balance control model of the energy storage unit in microgrid, the model is modeled and analyzed, and the distributed algorithm is used to optimize the model. A distributed power balance control strategy for microgrid energy storage unit against network attack is proposed. The response of the energy storage unit in the network control system of the microgrid is analyzed, and the distributed power balance control strategy for the energy storage unit of the microgrid is designed to resist the network attack. In this paper, the results of each work are verified by MATLAB simulation analysis, and the effectiveness of the proposed strategy is obtained by simulation and analysis.
【學位授予單位】：南京郵電大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM727

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