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基于可进化 PID 的含电动汽车孤岛微电网负荷频率控制策略 [PDF]
全球能源互联网, 2023 电动汽车（electric vehicle，EV）作为具有车网互动（vehicle-to-grid，V2G）能力的移动储能组件，为微电网的频率稳定提供了更为灵活的控制方案。但是，分布式电源与电动汽车所具有的强非线性，也给微电网频率控制带来了新的挑战。为此，提出了一种基于可进化PID的含电动汽车微电网频率控制策略。首先，考虑电动汽车移动性和用户充电行为随机性，以及电动汽车充电站容量在日内的阶段性突变，建立了由电动汽车充电站、微型燃气轮机与分布式电源组成的微电网系统。其次，将PID与深度确定性策略梯度 ...
范培潇 +4 more
doaj +1 more source
Journal of Diabetes, Volume 15, Issue 10, Page 890-899, October 2023., 2023 Highlights Patients with type 2 diabetes (T2D) are prone to developing chronic diabetes‐related complications at the microvascular and macrovascular levels. The Computerized Nailfold Video‐Capillaroscopy (CNVC) provides specific information on both quantitative and qualitative characteristics of microvasculature at the level of fingers.
Giuseppe Lisco, Vincenzo Triggiani
wiley +1 more source
Influencing the influencers: Regulating the morality of online conduct in Indonesia
Policy &Internet, Volume 14, Issue 3, Page 574-596, September 2022., 2022 Abstract Indonesia boasts a lively influencer scene. These influencers promote various products and messages, including political messages, to their followers for commercial gain, and have been particularly active during the coronavirus disease 2019 (COVID‐19) pandemic.
Petra Mahy +2 more
wiley +1 more source
Journal of Mathematics, Volume 2021, Issue 1, 2021., 2021 Fractional order research has interdisciplinary characteristics and has been widely used in the field of natural sciences. Therefore, fractional order research has become an important area of concern for scholars. This paper used 2854 literatures collected from China National Knowledge Infrastructure (CNKI) database from 2001 to 2020 as the data source
Yunfei Yang +4 more
wiley +1 more source
基于DE-RBF 混合优化算法的微电网自适应下垂控制策略 [PDF]
全球能源互联网, 2023 孤岛微电网因线路阻抗各异，采用传统下垂控制无法实现功率按分布式电源容量比例分配，会产生电压/频率偏差。为此，提出一种基于DE-RBF混合优化算法的自适应下垂控制策略。首先，构建下垂控制的两逆变器并联微电网系统动态模型，应用差分进化 （differential evolution，DE） 算法获得多个平衡点的优化下垂控制参数。为提高系统的动态响应速度与稳定性，通过训练径向基 （radial basis function，RBF） 神经网络，对每个平衡点参数进行校正。进而，通过增加RBF神经网络的隐含层数量，
吴丽珍, 魏建平, 丁安邦, 陈伟
doaj +1 more source
Wireless Autonomous Power Flow Control in Converter-Fed Microgrids [PDF]
, 2014 When total apparent power of the energy storage system (ESS) interfacing converter is fixed, the higher the requirement on reactive power in the microgrid system with distributed multiple converters, the weaker the ability of ESS to balance theactive ...
Guerrero, Josep M. +4 more
core +2 more sources
Secondary frequency control of islanded microgrid considering wind and solar stochastics
, 2023 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
全球能源互联网, 2022 随着碳中和目标的提出以及分布式可再生能源的发展，微电网作为未来集成清洁能源的有效载体受到广泛关注。风电等可再生能源的随机性和间歇性给微电网的经济调度带来挑战，为了减少不确定性的影响，基于数据驱动的条件正态Copula函数对风电预测误差的时间相关性及其与日前预测值的条件相关性进行建模，通过K-means聚类得到给定的日前预测值下第二日可能的风电功率场景，并采用随机优化方法解决微电网的日前调度问题。仿真结果表明，所提方法能够合理反映日前风电功率的可能场景，有效降低微电网运行成本，相较于确定性优化模型 ...
姜宇, 陈翔宇, 傅守强
doaj +1 more source
Key technologies and bottlenecks of multi-energy complementary DC microgrid for residual coalbed methane drainage in abandoned mine [PDF]
, 2023 In terms of the collaborative utilization of residual energy and space resources in abandoned mines, under the framework of a green low-carbon multi-energy complementary system, a multi-energy complementary DC microgrid integrating wind-solar-gas-storage
Bin LI +7 more
core +1 more source
Probabilistic load flow calculation for three-phase unbalanced droop-regulated islanded microgrids based on low-rank approximation method [PDF]
, 2020 For the characteristics of unbalanced nodes and constant frequency in the sagging control island microgrid, taking into account its three-phase asymmetry and the influence of uncertainty factors, a three-phase probability trend calculation method based ...
Fu, H. +4 more
core +2 more sources