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Rising concern in environmental issues on global scale has made energy saving in powered equipment a very important subject.In order to improve the energy efficiency and driving range of a motor hoist,... 相似文献
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Enrique González-Rivera Raúl Sarrias-Mena Pablo García-Triviño Luis M. Fernández-Ramírez 《国际能源研究杂志》2020,44(3):2316-2331
Hybrid energy storage systems (HESSs) help mitigating the fluctuations and variable availability of certain renewable sources, such as wind power, as they can provide support in different time scales. Therefore, regulating their state-of-charge (SOC) becomes crucial to ensure that the hybrid system complies with generation commitments agreed in time-ahead markets despite subsequent unexpected wind speed variations. So far, research has been mainly targeted at avoiding extreme SOC situations in the storage devices, whereas the regulation of this parameter to specific values has often been disregarded. A novel approach is proposed in this work, where model predictive control (MPC) is used to regulate the SOC of a HESS under variable wind and grid demand scenarios. The MPC-based supervisory controller developed for the hybrid system has been implemented and simulated under different situations. This controller monitors the future variation of the SOC with the aim of having the HESS available to develop its assigned functions successfully. The results show that a proper regulation of the SOC in the HESS increases the capacity to manage the active power supplied to the grid by the hybrid system based on wind power, as well as the level of compliance with generation commitments established time ahead. 相似文献
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为了调高风光互补发电储能系统的经济性,减少其运行费用,研究风光互补发电储能系统的容量优化配置模型,探讨粒子群算法的改进及混合储能容量优化方法。首先通过对全生命周期费用静态模型的介绍,利用蓄电池和超级电容器作为风光互补系统混合储能装置,以其全生命周期费用最小为目标,以系统的缺电率等运行指标为约束条件,建立了一种混合储能系统容量优化配置模型,其次,通过优化不对称加速因子进而改进了粒子群算法,最后利用算例在Matlab中进行了仿真与求解,结果表明,该方法不仅优化了蓄电池的工作状态,降低了储能系统的全生命周期费用,而且加快了收敛速度。 相似文献
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风光储混合系统的协调优化控制 总被引:1,自引:0,他引:1
为解决光伏和风电场的输出功率剧烈波动引起的电能质量下降和电网电压波动的问题,提出了利用复合储能技术分别平抑风光联合发电系统的输出功率在不同时段内的波动。在平抑功率波动过程中,提出了可变时间常数控制,不断实时优化低通滤波器的时间常数,实现了对储能系统充放电功率的灵活、快速控制,改善了储能系统的运行,减小了储能容量;同时提出最大输出功率限制控制保护储能运行在合理的范围。通过建模仿真验证了控制方法的有效性。 相似文献
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为了更充分地利用分布式电源的发电出力,最大限度发挥超级电容器的技术经济性,提出了两端供电的干线式直流微网结构,指出超级电容器储能系统在直流微网的优势与作用,并根据超级电容器储能系统配置地点来选择控制方法,电源端配置采用电压分段控制,负荷端配置采用恒压控制。在Matlab/Simulink平台上搭建包含超级电容器储能系统的直流微网模型,分析超级电容器储能系统配置位置对直流微网电能质量的影响。仿真结果表明超级电容器储能系统能有效地抑制负荷波动或光照变化引起的电压大幅变化。 相似文献
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