本文選題：在線優(yōu)化 + 微電網(wǎng)�。� 參考：《華北電力大學(北京)》2017年碩士論文

【摘要】：由于政策激勵、峰谷電價以及環(huán)境污染等因素的影響,用戶側(cè)逐步實現(xiàn)了可再生能源發(fā)電設(shè)備與儲能設(shè)備的規(guī)�；尤�,形成了以綜合開發(fā)需求側(cè)資源為核心的用戶側(cè)微電網(wǎng)。然而目前相關(guān)的研究工作中對用戶需求的關(guān)注度不夠,且適用于用戶側(cè)微電網(wǎng)的在線能量管理研究仍存在不足。因此,研究用戶側(cè)微電網(wǎng)的在線能量管理方法具有重要意義。本文首先介紹了用戶側(cè)微電網(wǎng)能量管理與互聯(lián)運行的國內(nèi)外發(fā)展現(xiàn)狀,并對現(xiàn)有研究工作的不足進行了簡要總結(jié)。針對用戶側(cè)微電網(wǎng)的能量管理需求與應用特點,簡要概述了在線優(yōu)化的理論基礎(chǔ)及其應用情況,并詳細論述了李雅普諾夫優(yōu)化的基本原理、應用特點、優(yōu)化性能及適用范圍�？偨Y(jié)了在線優(yōu)化算法的評價指標、關(guān)鍵特征與目前存在的難點問題。其次,針對單個用戶側(cè)微電網(wǎng),提出了一種在線能量管理方法,以降低用戶的用電成本�；诶钛牌罩Z夫優(yōu)化理論,構(gòu)建可控負荷隊列,將能量管理問題轉(zhuǎn)化為每個時刻的線性規(guī)劃問題�；诜穷A測機制,只需獲取在線信息即可對可控負荷進行實時調(diào)控。采用事件觸發(fā)機制觸發(fā)在線算法執(zhí)行,有效地減少了執(zhí)行頻率和計算量。仿真算例驗證了該方法在保證微電網(wǎng)用戶用電舒適度的同時,有效地提高了用電經(jīng)濟性,并分析了模型參數(shù)對優(yōu)化性能的影響。最后,針對用戶側(cè)微電網(wǎng)群,提出了一種在線能量共享方法,以提高微電網(wǎng)群的自給自足能力,促進可再生能源的就地消納。基于李雅普諾夫優(yōu)化理論,構(gòu)建虛擬儲能隊列,將能量共享問題轉(zhuǎn)化為每個時刻的線性規(guī)劃問題,只需獲取當下時刻的信息即可對微電網(wǎng)之間的交換電量做出實時決策。仿真算例驗證了該方法在滿足微電網(wǎng)用戶負荷需求的同時,有效地提高了可再生能源在用戶側(cè)微電網(wǎng)群中的消納,并分析了微電網(wǎng)的配置參數(shù)對優(yōu)化結(jié)果的影響。
[Abstract]:Due to the influence of policy incentives, peak and valley electricity prices and environmental pollution, the large-scale access of renewable energy generation equipment and energy storage equipment has been gradually realized on the user side, and a user-side microgrid with the core of comprehensive development of demand-side resources has been formed. However, the current research work has not paid enough attention to the user's needs, and the online energy management research for the user side microgrid is still insufficient. Therefore, it is of great significance to study on-line energy management of user-side microgrid. In this paper, the current situation of energy management and interconnected operation of user-side microgrid at home and abroad is introduced, and the shortcomings of existing research work are summarized briefly. In view of the energy management requirements and application characteristics of user-side microgrid, the theoretical basis and application of on-line optimization are briefly summarized, and the basic principle, application characteristics, optimization performance and application range of Lyapunov optimization are discussed in detail. The evaluation index, key features and existing difficulties of online optimization algorithm are summarized. Secondly, an online energy management method is proposed for single user side microgrid to reduce the cost of power consumption. Based on Lyapunov optimization theory, a controllable load queue is constructed, and the energy management problem is transformed into a linear programming problem at every moment. Based on the non-prediction mechanism, the controllable load can be adjusted in real time only by obtaining online information. The event triggering mechanism is used to trigger the online algorithm execution, which effectively reduces the execution frequency and computation cost. The simulation results show that the proposed method not only ensures the power consumption comfort of micro-grid users, but also effectively improves the power economy, and analyzes the influence of the model parameters on the optimal performance. Finally, an online energy sharing method is proposed to improve the self-sufficiency of the micro-grid group and promote the in-situ absorption of renewable energy. Based on Lyapunov optimization theory, a virtual energy storage queue is constructed, and the problem of energy sharing is transformed into a linear programming problem at every moment. The simulation results show that the proposed method not only meets the demand of microgrid users, but also effectively improves the absorption of renewable energy in the user side microgrid cluster. The influence of the configuration parameters of microgrid on the optimization results is analyzed.
【學位授予單位】：華北電力大學(北京)
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM727

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