Tracking-dispatch of a combined wind-storage system based on model predictive control and two-layer fuzzy control strategy

IF 8.7 1区 工程技术 Q1 ENERGY & FUELS Protection and Control of Modern Power Systems Pub Date : 2023-11-14 DOI:10.1186/s41601-023-00334-6
Jingyu Yang, Tongguang Yang, Longfu Luo, Li Peng
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Abstract

Abstract To maximize improving the tracking wind power output plan and the service life of energy storage systems (ESS), a control strategy is proposed for ESS to track wind power planning output based on model prediction and two-layer fuzzy control. First, based on model predictive control, a model with deviations of grid-connected power from the planned output and the minimum deviation of the remaining capacity of the ESS from the ideal value is established as the target. Then, when the grid-connected power exceeds the allowable deviation band of tracking, the weight coefficients in the objective function are adjusted by introducing the first layer of fuzzy control rules, combining the state of charge (SOC) of the ESS with the dynamic tracking demand of the planned value of wind power. When the grid-connected power is within the tracking allowable deviation band, the second layer of fuzzy control rules is used to correct the charging and discharging power of the ESS to improve its ability to track the future planned deviation while not crossing the limit. By repeatedly correcting the charging and discharging power of the ESS, its safe operation and the multitasking execution of the wind power plan output tracking target are ensured. Finally, taking actual data from a wind farm as an example, tests on a simulation platform of a combined wind-storage power generation system verify the feasibility and superiority of the proposed control strategy.
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基于模型预测控制和双层模糊控制策略的组合蓄风系统跟踪调度
摘要为了最大限度地提高储能系统跟踪风电输出计划和使用寿命,提出了一种基于模型预测和双层模糊控制的储能系统跟踪风电规划输出控制策略。首先,基于模型预测控制,建立以并网功率偏离计划输出、ESS剩余容量偏离理想值最小为目标的模型;然后,当并网功率超出跟踪允许偏差范围时,通过引入第一层模糊控制规则,结合ESS的荷电状态(SOC)和风电规划值的动态跟踪需求,对目标函数中的权重系数进行调整;当并网功率在跟踪允许偏差范围内时,采用第二层模糊控制规则对ESS的充放电功率进行校正,提高ESS在不超过限值的情况下跟踪未来计划偏差的能力。通过对ESS充放电功率的反复校正,保证了ESS的安全运行和风电计划输出跟踪目标的多任务执行。最后,以某风电场的实际数据为例,在一个蓄风联合发电系统仿真平台上进行了测试,验证了所提控制策略的可行性和优越性。
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来源期刊
CiteScore
20.10
自引率
8.20%
发文量
43
审稿时长
4 weeks
期刊介绍: Protection and Control of Modern Power Systems (PCMP) is the first international modern power system protection and control journal originated in China. The journal is dedicated to presenting top-level academic achievements in this field and aims to provide a platform for international researchers and engineers, with a special focus on authors from China, to maximize the papers' impact worldwide and contribute to the development of the power industry. PCMP is sponsored by Xuchang Ketop Electrical Research Institute and is edited and published by Power System Protection and Control Press. PCMP focuses on advanced views, techniques, methodologies, and experience in the field of protection and control of modern power systems to showcase the latest technological achievements. However, it is important to note that the journal will cease to be published by SpringerOpen as of 31 December 2023. Nonetheless, it will continue in cooperation with a new publisher.
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