Results 11 to 20 of about 645 (179)
Dispatching and control information freshness guaranteed resource optimization in simplified power Internet of things [PDF]
Information freshness conducts an important impact on the training accuracy of the distributed energy dispatching and control model.Poor dispatching and control information freshness will increase the loss function of the training model, reduce the ...
Fei WANG +6 more
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Spatiotemporal perspectives on urban energy transitions: a comparative study of three cities in China [PDF]
This paper develops an integrated framework to study the socio-spatial and temporal dimensions of urban energy transitions to investigate the development and spread of solar energy technologies in urban China. A comparative analysis of three case studies
Castán Broto, V. +5 more
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考虑电池寿命的虚拟电厂调频竞标模型及合作利润分配策略 [PDF]
聚合的分布式能源可作为虚拟电厂(virtual power plant,VPP)在电力市场中提供辅助调频服务,来应对低碳经济下大规模可再生能源并网给电力系统稳定性带来的挑战。为了引导VPP参与调频辅助服务市场,对VPP所有者的经济激励尤为重要。研究了澳大利亚国家电力市场中调频辅助服务市场机制,针对配网侧聚合的住宅屋顶光伏和电池储能系统的VPP,以利润最大化为目标,提出了嵌入电池循环寿命模型的调频市场优化竞标策略和与风电合作的联合优化竞标策略。同时,根据讨价还价博弈理论,基于Nash-Harsanyi ...
陈雯, 孙荣峰, 邱靖, 柴庆冕
doaj +1 more source
随着大量分布式光伏接入配电网,电力系统负荷侧的动态特性产生显著变化,尤其是配电网发生故障时,光伏的有功和无功响应对配网产生较大影响,因此,需要对分布式光伏接入对配网系统的暂态特性进行建模分析。基于光伏并网系统传统结构及控制方式,提出分别适用于低电压和高电压故障下,有功与无功解耦的逆变器保护控制策略,并对模型的高低电压穿越能力进行仿真,并基于逆变器实际电压穿越检测报告进行检验,验证了该光伏并网系统模型具备规定的故障穿越能力。由北京地区某光伏电站实际配网结构、设备参数和光伏控制参数 ...
陈茜 +7 more
doaj
Impact Analysis of Energy Storage Participating in Peak Shaving and Valley Filling for Distribution Network on Network Loss and Voltage Deviation [PDF]
[Introduction] The application scenarios of peak shaving and valley filling by energy storage connected to the distribution network are studied to clarify the influence of energy storage access on network losses and voltage quality on the distribution ...
Fuchun LI +5 more
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Secondary frequency control of islanded microgrid considering wind and solar stochastics
As the high penetration of wind and photovoltaic distributed generation (DG) in the microgrid, the stochastic and low inertia emerge, bringing more challenges especially when the microgrid operates in isolated islands.
Chen, Jikai +4 more
core +1 more source
工业企业从电能消费者转变为产消者的环境生态可持续性仍是个未知数。以水泥产消者为例,基于能值分析方法,提出了光伏发电有效能值可持续发展指数,对分布式光伏发电系统在生命周期内投入的成本和“免费”资源进行统计和综合计算;接着,提出了基于能值指标的绿证与碳抵消电量折算方法,对不同用电模式产生的碳减排效果和电-碳-绿证融合的自然价值进行量化和比较。结果证明,水泥产消者的分布式光伏系统单位功率输出的能值需求低;“自发自用”模式可兼容经济性实现高效减碳;能值指标减小了月度绿证和碳市场的可交易量。据此 ...
蓝静 +4 more
doaj +1 more source
含智慧社区能量枢纽配电网三相不平衡动态潮流模型预测控制方法 [PDF]
分布式能源具有分散性及不确定性,直接接入配电网将对潮流产生较大影响,增加配电网的调控难度。如何在兼顾系统经济、环保、安全运行的前提下,提高配电网对分布式能源的消纳和主动管理控制水平成为研究的重点。针对多能源接入配电网对配电网潮流及优化控制问题,提出一种含智慧社区多能枢纽的三相不平衡配电网动态潮流分析方法。根据智慧社区分布式风电、光伏出力及负荷的波动,考虑社区冷热电联供、电动汽车、储能设备等的技术经济特性,通过能源集线器实现社区与配电网的能量交互,并利用模型预测控制方法对配电网进行在线滚动潮流计算 ...
马瑞 +5 more
doaj +1 more source
雷击感应过电压是造成有源配电系统故障的主要原因,研究分布式光伏系统接入配电线路后感应过电压特性具有重要意义。在ATP中搭建了分布式光伏系统接入10 kV配电线路感应过电压计算模型,计算了雷击有源配电线路不同位置时,配电线路侧和光伏侧感应过电压的变化规律,并提出了相应的防雷配置优化策略。结果表明:当雷击线路杆塔附近地面时,线路上产生的感应过电压会影响光伏系统稳定运行;当雷击光伏阵列金属边框时,不会对配电线路造成影响;在并网变压器高低压侧分别安装避雷器和SPD时 ...
柴辰 +4 more
doaj
A Study on Solar Photovoltaic Array Surface Morphology Variation in Sandy Area Based on Wind Tunnel Test [PDF]
[Objective] The surface morphology changes and its relation with wind environment under wind regime disturbance by a solar photovoltaic array in a sandy area of the middle part of Kubuqi Desert, in order to provide a theoretical basis for determining a ...
Dang Xiaohong +5 more
core +1 more source

