共查询到17条相似文献,搜索用时 250 毫秒
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针对分布式电源接入及负荷波动引起配电网线路损耗增加的问题,文中提出将分时电价机制协同用户侧储能参与配电网的优化运行模型。基于分时电价建立用户负荷响应模型,构建以用户日用电成本、配电网网损最小为目标函数的配电网运行优化模型。采用评价函数法将多目标转化成单目标,并在传统遗传算法中引入模拟退火Metropolis准则对用户侧储能充放电策略寻优。仿真结果证明了文中所提策略能有效降低配电网网损及用户用电成本,所提算法寻优速度较快,收敛性能较好。 相似文献
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<正>清洁能源发电模式的兴起与应用,虽然满足了电能的需求,但也降低了电力系统的可控性,影响电力系统整体收益。需求侧响应是提升可控性的关键所在,提出基于用户用电行为模型的需求侧响应方法研究。构建用户用电信息采集系统,选取用户用电特征量,反映用户用电综合信息,以此为基础,基于改进K-means聚类算法构建用户用电行为模型,以用户效用最大化为目标,探究需求侧响应策略,为电力系统的稳定运行提供保障。实验数据显示:应用提出方法获得的用户效用更高,最大值为95.32UTIL,表明提出方法应用性能更佳。 相似文献
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Peng Yu Yong Zhang Xing-Hua Liu Peng Zhao Sun Li Rui-Qi Wang Shu-Min Sun Guang-Lei Li Yu-Yao Qu Lin Li 《电子科技学刊:英文版》2016,14(3):281-286
In order to realize the modular design of the microgrid, this paper proposed a new modular topology for the AC-DC mixed microgrid. In that topology, the AC microgrid unit and the DC microgrid unit were packaged together by the back-to-back converter. The battery-supercapacitor hybrid energy storage system was connected to the DC bus of back-to-back converter. By the reasonable design on the battery-supercapacitor hybrid system, the energy storage system could supply the rapid power and energy support for the microgrid spontaneously. The mathematical model and the control algorithm of that microgrid topology were studied. By the simulation analysis, it can be concluded that AC-DC mixed modular microgrid topology could operate steadily on both the grid-connected mode and the isolated mode. Furthermore, we can conclude by the simulation that the designed modular microgrid could operate uninterrupted when the microgrid topology switched from the grid-connected mode to the isolated mode. The seamless switching became the natural property for the modular microgrid. As a result, the modular microgrid topology can be considered as a usual power/load module to realize the friendly power interaction with the power grid. 相似文献
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Control Strategy for Flexible Microgrid Based on Parallel Line-Interactive UPS Systems 总被引:5,自引:0,他引:5
《Industrial Electronics, IEEE Transactions on》2009,56(3):726-736
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鉴于传统三电平逆变电路存在谐波含量高的缺点, 在分析模块化多电平换流器(MMC)工作原理的基础上, 提出使用模块化多电平电路实现光伏并网逆变功能, 采用微分-跟踪器法实现光伏阵列最大功率点跟踪(MPPT)及逆变器PQ解耦控制, 实现了光伏系统以单位功率因数并网。在PSCAD中建立光伏并网系统动态仿真模型, 仿真结果表明, 所建模型具有开关损耗低、谐波量小的优点, 验证了所提方法的正确性和可行性。 相似文献
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