风电参与电力市场策略及储能P2G优化配置研究
2022-11-04 10:11:27
论文总字数:17885字
摘 要
可再生能源随着电力工业的迅速发展逐渐大规模接入电网。由于火电机组的适应有限性,所以在一定程度上催化了可再生能源在发电中占有的高比例。风能本身,在减少污染和改善系统经济性的同时,也存在随机性、间歇性等生活中真实存在的问题。这意味着电网的安全运行受到了严重挑战,所以这些问题必须作为紧急事项加以解决。储能系统能成为最佳选择是因其可以快速响应充放电的运行特性。它能有效快速地缓解风电功率的不可控性。但是风电场要配置储能系统也意味着运营成本的增加。储能系统的容量越大,充放电功率越大,控制风能出力波动能力越强,但与此同时成本越高。因此储能系统被限制大规模应用的关键因素是其成本问题。因此,优化风储系统的运行问题具有重要的现实意义。
由于风电出力的不确定性以及储能系统的高成本限制了其大规模应用,本文对风电参与电力市场策略及风储系统的运行优化进行分析研究:首先介绍了发展背景,分析了课题有关通过储能缓解风电的不确定性具有重要的现实意义。随后介绍分析风储联合系统的结构、原理及储能电池的相关原理参数。然后分析了风电参与电力市场的策略和风险因素。再以风储联合系统的总收益最大为目标,以风电出力波动和市场电价波动为考虑因素,建立储能运行优化的目标模型。此外,还考虑了电池储能系统自身容量、功率、充放电状态的约束。最后在MATLAB环境下编程求解数学模型,确定优化策略。
关键词:风电;储能优化;建模;电力市场
Research on Wind Power's Participation in Power Market Strategy and Energy Storage/P2G Optimal Allocation
Abstract
With the rapid development of the power industry, renewable energy sources are gradually connected to the grid on a large scale. Due to the limited adaptability of thermal power units, to a certain extent, it has catalyzed the high proportion of renewable energy in power generation. Wind energy itself, while reducing pollution and improving system economy, also has real problems in life such as randomness and intermittency. This means that the safe operation of the power grid has been severely challenged, so these problems must be resolved as urgent matters. Energy storage system can be the best choice because of its fast response to charging and discharging operating characteristics. It can effectively and quickly alleviate the uncontrollability of wind power. However, the deployment of energy storage systems for wind farms also means an increase in operating costs. The greater the capacity of the energy storage system, the stronger the ability to control wind energy output fluctuations, but at the same time the higher the cost. Therefore, the key factor that limits the large-scale application of energy storage systems is its cost. Therefore, optimizing the configuration of the wind storage system has important practical significance.
Due to the uncertainty of wind power output and the high cost of energy storage systems restrict its large-scale application, this article analyzes and studies the strategy of wind power participation in the power market and the optimal configuration of wind storage systems. It has important practical significance to alleviate the uncertainty of wind power. Then it introduces and analyzes the structure and principle of wind-storage combined system and the related principle parameters of energy storage battery. Then it analyzes the strategy and risk factors of wind power participating in the electricity market. The goal is to maximize the total revenue of the combined wind-storage system, and take wind power output fluctuations and market electricity price fluctuations as consideration factors to establish a target model for energy storage optimization. In addition, the constraints of the battery energy storage system's own capacity, power, and charging and discharging state are also considered. Finally, the mathematical model is solved by programming in the MATLAB environment, and the optimal configuration strategy is determined.
Key words:wind power,Energy storage optimization,Modeling,Electricity Market
目 录
摘要 I
Abstract II
第一章 绪 论 1
1.1课题研究背景及必要性 1
1.2国内外研究现状 1
1.2.1风电发展现状 1
1.2.2 储能技术的研究现状 2
1.2.3风储联合系统中储能技术的研究 2
1.3本文主要研究的内容 3
第二章 风储联合系统结构分析 5
2.1风储联合系统结构及原理 5
2.2铅酸储能系统原理及特性 5
2.2.1 铅酸电池原理及参数 5
2.2.2 铅酸电池基本特性 6
2.3本章小结 6
第三章 风电参与电力市场交易 7
3.1引言 7
3.2风电参与电力市场交易模式 7
3.3风电参与电力市场交易的风险因素 7
3.4本章小结 8
第四章 风储联合系统的运行优化 9
4.1目标函数 9
4.2优化约束条件确定 10
4.3算例验证 11
4.3.1参数确立 11
4.3.2算例数据 12
4.3.3结果分析 13
4.4本章小结 15
结论与展望 16
致 谢 17
参考文献 18
第一章 绪 论
1.1课题研究背景及必要性
环境污染和化石燃料带来的压力随着社会发展越来越明显,导致可再生能源的快速开发迫在眉睫。在众多发展的能源中,风能已经成为较具有未来潜力的清洁能源。风力发电,因其具有优点的同时也存在一些劣势,所以需要顺应社会需求而被不断改进。其优点主要体现在以下几个方面:
(1)在能量转换中,风能转换时的一些能源损失是不可避免的。但是总体上清洁能源还是通常被用于抵消化石燃料等不可再生能源的损耗。
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