面向海量灵活性资源的两阶段分布式协同调度方法

电动汽车和5G基站作为柔性负荷资源,为电网提供了充足的备用容量,采用一定策略对其进行调控,可参与电网的辅助服务。但在未来海量分布式柔性资源参与的情况下,集中式的优化调度方法会存在隐私泄露和计算负担沉重的缺点。基于此,首先建立5G基站备用电池和电动汽车可调度容量的实时评估模型,利用无向图网络对通信系统和储能元件建模,提出一种基于均衡荷电状态的调度策略,采用分布式共识算法实现了隐私保护和海量资源的调度控制。然后,提出一种先评估功率边界、后进行分布式共识调度的两阶段实时调度流程方案。最后,通过仿真验证了该方案的有效性。

Sn-doped BiOCl nanosheet with synergistic H^(+)/Zn^(2+)co-insertion for“rocking chair”zinc-ion battery

The development of insertion-type anodes is the key to designing“rocking chair”zinc-ion batteries.However,there is rare report on high mass loading anode with high performances.Here,{001}-oriented Bi OCl nanosheets with Sn doping are proposed as a promising insertion-type anode.The designs of cross-linked CNTs conductive network,{001}-oriented nanosheet,and Sn doping significantly enhance ion/electron transport,proved via experimental tests and theoretical calculations(density of states and diffusion barrier).The H^(+)/Zn^(2+)synergistic co-insertion mechanism is proved via ex situ XRD,Raman,XPS,and SEM tests.Accordingly,this optimized electrode delivers a high reversible capacity of 194 m A h g^(-1)at 0.1 A g^(-1)with a voltage of≈0.37 V and an impressive cyclability with 128 m A h g^(-1)over 2500 cycles at 1 A g^(-1).It also shows satisfactory performances at an ultrahigh mass loading of 10 mg cm^(-2).Moreover,the Sn-Bi OCl//MnO_(2)full cell displays a reversible capacity of 85 m A h g^(-1)at 0.2 A g^(-1)during cyclic test.

5G通信基站参与需求响应:关键技术与前景展望

第5代移动通信技术(5th generation mobile networks,5G通信)发展方兴未艾。5G网络的普及需要建设大量的5G基站,这些海量的5G基站将在未来成为可观的潜在灵活性资源。5G基站参与需求响应,即对于5G基站中的供电设备和用电设备进行调度,能够在降低5G用电成本的同时,为电力系统提供灵活性资源,实现通信系统与电力系统的双赢。该文总结了5G基站的基本组成设备和用电特性,分析了其参与需求响应的潜力;梳理了5G基站参与需求响应所必需的关键技术;展望了5G基站作为需求侧资源参与电力系统互动的应用场景;最后,对于5G基站参与需求响应潜在的商业模式进行探讨。

Designing Textile Architectures for High Energy-Efficiency Human Body Sweat-and Cooling-Management

Thermal management of textiles requires local microclimate control over heat and wet dissipation to create a comfortable thermal-wet environment at the interface of the human body and clothing.Herein,we design a fabric capable of both sweat-and cooling-management using a knitted fabric featuring a bilayer structure consisting of hydrophobic polyethylene terephthalate and hydrophilic cellulose fibers to simultaneously achieve high infrared(IR)transmittance and good thermal-wet comfort.The IR transmission of this cooling textile increased by~twofold in the dry state and~eightfold in the wet state compared to conventional cotton fabric.When the porosity changes from 10 to 47%with the comparison of conventional cotton fabric and our cooling textile,the heat flux is increased from 74.4 to 152.3 W/cm^(2).The cooling effect of the cooling fabric is 105%greater than that of commercial cotton fabric,which displays a better thermal management capacity for personal cooling.This bilayer design controls fast moisture transfer from inside out and provides thermal management,demonstrating high impact not only for garments,but also for other systems requiring heat regulation,such as buildings,which could mitigate energy demand and ultimately contribute to the relief of global energy and climate issues.

Inorganic Nanoribbons with Unpassivated Zigzag Edges： Half Metallicity and Edge Reconstruction

我们调查了无机的 nanoribbons 的电子、结构的性质(BN， AlN，原文如此，轧了并且 ZnO ) 与用密度的 unpassivated 之字形边功能的理论计算。我们发现一般来说， unpassivated 之字形边能导致精力乐队切开纺纱。更有趣地，无机的 nanoribbons AlN 并且原文如此，与或二个边， unpassivated 被预言是一半金属性。在电子性质上的 unpassivated 边和它的效果的可能的结构的重建被调查。在 BN nanoribbon 的 unpassivated N 边和在高山 nanoribbon 的 P 边是精力充沛地不比相应的重建的边稳定。因此，在二个边的边重建可以发生在高温度。在这研究考虑的无机的 nanoribbons 的另外的 unpassivated 边都对边重建是柔韧的。

Three-stage alloying of[Ag_(44)(p-MBA)_(30)]^(4−)cluster with[Au_(2)(p-NTP)_(2)Cl]^(−)

Precise control of alloying sites has long been a challenge,yet little has been achieved in the atomic-level manipulation of metallic nanomaterials.This study reported a three-stage metal and motif exchange mechanism of alloying reaction of an atomically precise ligand-protected[Ag_(44)(p-MBA)_(30)]^(4−)(p-MBA=para-mercaptobenzoic acid)cluster with[Au_(2)(p-NTP)_(2)Cl]^(−)(p-MBA=para-mercaptobenzoic acid).During the first stage(Stage I),an exchange of ligand-shell metal atoms took place.During the second stage(Stage II),the motif exchanged on the[AuAg_(43)(p-MBA)_(30)]^(4−)cluster.During the third stage(Stage III),the Au(I)atom in the ligand-shell was swapped with a Ag(0)atom of the icosahedral Ag12-core.The density functional theory(DFT)calculation results demonstrated that the metal exchange proceeded via different mechanisms at the different reaction stages.In reaction Stages I and II,the metal exchange proceeded via formation of a dianionic[Ag_(44)(p-MBA)_(30)]^(4−)-[Au_(2)(p-NTP)_(2)Cl]^(−)intermediate and then broke and recombined with the ligand-shell.In Stage III,the diffusion of the Au(I)to icosahedral Ag12-core(Stage III)was proceeded via a motif catalyzed heterometal atom diffusion mechanism.We hope that this work will provide a new perspective for the precise control of alloy position in alloyed nanomaterials.