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Real-time Online Analysis of Power Grid

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CSEE Journal of Power and Energy Systems 2020年第1期6卷 236-238页

作者： mike zhou Jianfeng Yan Xiaoxin zhou China Electric Power Research Institute Beijing 100192China

The unprecedented operational complexity and se-curity risks in operating the Chinese UHV AC/DC power grid calls for a new generation of real-time(sec-order)online analysis systems to provide decision *** recent Digital Twin based online analysis research and development work to address the needs is *** addition,a high-level solution architec-ture for the future real-time online analysis systems is proposed for realizing:a)The delay of the virtual model to mirror the physical power grid is in sub-sec range;b)The downstream online analysis applications could have sec-order responsiveness.

关键词： Grid online analysis security assessment digital twin security constraint dispatching

A New Solution Architecture for Online Power System Analysis

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CSEE Journal of Power and Energy Systems 2018年第2期4卷 250-256页

作者： mike zhou Jianfeng Yan State Grid Electric Power Research Institute Beijing 100192China China Electric Power Research Institute Beijing 100192China

The current DSA system used in the dispatching control centers in China is a near real-time analysis system with response speed in the order of *** on a review of the state-of-the-art in online analysis and discussion of distributed data processing and computation architecture patterns,a new online analysis architecture is *** primary goal of the new architecture is to increase the online analysis response speed to the order of seconds.A reference implementation of the proposed online analysis architecture to validate the feasibility of implementing the architecture and some performance testing results are presented.

关键词： CEP complex event processing DSA EMS in-memory computing power grid modeling power system online analysis

Digital Twin Framework and Its Application to Power Grid Online Analysis

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CSEE Journal of Power and Energy Systems 2019年第3期5卷 391-398页

作者： mike zhou Jianfeng Yan Donghao Feng China Electric Power Research Institute Beijing 100085China Kedong Electric Power Control System Co. Ltd.Beijing China

Digital twin(DT)framework is introduced in the context of application for power grid online *** the development process of a new power grid real-time online analysis system,an online analysis digital twin(OADT)has been implemented to realize the new online analysis *** OADT approach is presented and its prominent features are *** presentation,discussion,and performance testing are based on a large-scale grid network model(40K+buses),exported directly from the EMS system of an actual power grid.A plan to apply the OADT approach to digitize power grid dispatching rules is also outlined.

关键词： Complex event processing digital twin inmemory computing machine learning neural network model parallel computing power grid online analysis

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秒级响应电网在线分析软件平台

电网技术 2020年第9期44卷 3474-3480页

作者：周二专冯东豪严剑峰周孝信中国电力科学研究院有限公司北京市海淀区100192 国网电力科学研究院有限公司北京市海淀区100192

介绍一个新的电网实时在线分析系统软件平台,以支持下一代秒级响应在线分析系统的研发。文章介绍了在线分析系统响应速度提升的总体思路,在线分析软件平台技术路线、实施方案和平台的通用功能模块。基于该在线分析软件平台的拓展,研发... 详细信息

介绍一个新的电网实时在线分析系统软件平台,以支持下一代秒级响应在线分析系统的研发。文章介绍了在线分析系统响应速度提升的总体思路,在线分析软件平台技术路线、实施方案和平台的通用功能模块。基于该在线分析软件平台的拓展,研发了一套新在线分析系统。该系统已经在湖南省调部署并在线示范运行。初步测试数据表明,新在线分析系统可以达到秒级的响应速度。

关键词：电网在线分析 DSA 数字孪生内存计算并行计算复杂事件处理机器学习神经网络模型

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面向电网在线分析的复杂事件处理引擎研发

电力系统自动化 2019年第20期43卷 105-113,122页

作者：周二专冯东豪冯长有张思远袁启海陈捷南瑞集团有限公司(国网电力科学研究院有限公司)(北京) 北京市100092 北京科东电力控制系统有限责任公司北京市100092 国家电网有限公司国家电力调度控制中心北京市100031 国网湖南省电力有限公司湖南省长沙市410004

针对电网在线分析系统快速(秒级)响应需求,研发了一套适用于电网实时安稳评估、面向事件驱动的规则评估的复杂事件处理(CEP)引擎软件系统。首先介绍了CEP引擎的系统架构设计,相关软件功能模块的实现技术路线和主要实施步骤。其次描述了... 详细信息

针对电网在线分析系统快速(秒级)响应需求,研发了一套适用于电网实时安稳评估、面向事件驱动的规则评估的复杂事件处理(CEP)引擎软件系统。首先介绍了CEP引擎的系统架构设计,相关软件功能模块的实现技术路线和主要实施步骤。其次描述了CEP技术在电网在线分析中应用的方法,包括在线快速安稳评估、电网运行状态实时跟踪、电网运行态势感知和大电网全局监控应用场景。

关键词：复杂事件处理在线分析事件驱动架构规则引擎实时跟踪态势感知全局监控

Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao Yu Yingjie zhou Yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： Zhi Li Yang Wei Kang zhou Xin Huang Xing zhou Jie Xu Taoyi Kong Junwei Lucas Bao Xiaoli Dong Yonggang Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （<0.7 V） and excellent cyclic *** three-sodium storage mechanism was demonstrated with various in-situ/ex-situ spectroscopy and theoretical calculations,showing a high capacity of 208 mAh/g and an average decay rate of merely 0.022%per ***,the Na4TDC-hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu Zhang Aihua Yuan Hu zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere