期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到34,919篇文章
< 1 2 … 250 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Performance optimization of thermal integrated-Carnot battery for waste heat utilization in industrial integrated energy systems 认领 引用
1
作者 Xiaojie Lin Xiangrui Jin +4 位作者 Jiahao Xu Xueru Lin Zheng Luo Zitao Yu Wei Zhong 《ENGINEERING Energy》 SCIE EI CAS CSCD 2026年第1期101-120,共20页
Thermally integrated Carnot battery(TI-CB)systems offer unique advantages for industrial waste heat recovery,but their performance under fluctuating,off-design conditions remains poorly understood.To address this gap,... Thermally integrated Carnot battery(TI-CB)systems offer unique advantages for industrial waste heat recovery,but their performance under fluctuating,off-design conditions remains poorly understood.To address this gap,this study proposes a quasi-dynamic mathematical model with solution methodologies applicable to both design and off-design operating conditions.A dynamic evaluation framework is also developed to account for the temporal mismatch between energy storage and release processes.A multi-operating-condition set constructed via multivariable sampling is used to enable systematic analysis of key design parameters under both design and off-design conditions.The results reveal that heat source utilization parameters and heat pump temperature rise are dominant factors affecting TI-CB performance,while off-design analysis shows that ORC mass flow rate variations have a more significant impact on system performance than heat pump fluctuations.Due to irreversible heat losses,an increase in the heat source temperature difference leads to a decrease in round-trip efficiency(ηrt)from 62.6%to 45.8%,whileηorc andηex also exhibit downward trends.A higher temperature lift in the heat pump results a decrease in the mean COP from 7.6 to 4.8,whereasηorc increases from 7.0%to 10.2%.Among working fluids evaluated,R1336mzz(Z)demonstrates superior performance but exhibits nonlinear behavior,while R1233zd(E)provides optimal stability across operating ranges,making it suitable for practical engineering applications. 展开更多
关键词 Carnot battery Thermodynamic performance Integrated energy systems Modeling Waste heat recovery
暂未订购 下载PDF
Coordinated Control Strategy for Active Frequency Support in PV-Storage Integrated Systems 认领 引用
2
作者 Junxian Ma Haonan Zhao +3 位作者 Zhibing Hu Yaru Shen Fan Ding Shouqi Jiang 《Energy Engineering》 EI 2026年第2期134-152,共19页
Energy storage-equipped photovoltaic(PV-storage)systems can meet frequency regulation requirements under various operating conditions,and their coordinated support for grid frequency has become a future trend.To addre... Energy storage-equipped photovoltaic(PV-storage)systems can meet frequency regulation requirements under various operating conditions,and their coordinated support for grid frequency has become a future trend.To address frequency stability issues caused by low inertia and weak damping,this paper proposes a multi-timescale frequency regulation coordinated control strategy for PV-storage integrated systems.First,a self-synchronizing control strategy for grid-connected inverters is designed based on DC voltage dynamics,enabling active inertia support while transmitting frequency variation information.Next,an energy storage inertia support control strategy is developed to enhance the frequency nadir,and an active frequency support control strategy for PV system considering a frequency regulation deadband is proposed,where the deadband value is determined based on the power regulation margin of synchronous generators,allowing the PV-storage system to adaptively switch between inertia support and primary frequency regulation under different disturbance conditions.This approach ensures system frequency stability while fully leveraging the regulation capabilities of heterogeneous resources.Finally,the real-time digital simulation results of the PV-storage integrated system demonstrate that,compared to existing control methods,the proposed strategy effectively reduces the rate of change of frequency and improves the frequency nadir under various disturbance scenarios,verifying its effectiveness. 展开更多
关键词 PV-storage integrated systems inertia self-synchronization control primary frequency regulation frequency stability
暂未订购 下载PDF
A multilayered spiral architecture for fibre-integrated circuits enables intelligent closed-loop fibre systems 认领 引用
3
作者 Bin Chen Yingying Zhang 《Science Bulletin》 SCIE EI CAS CSCD 2026年第13期3234-3236,共3页
Fibre electronics is redefining the role of conventional fibres,extending them from textile substrates for wearing and weaving to functional carriers for energy,sensing,display,and information processing.Remarkable ad... Fibre electronics is redefining the role of conventional fibres,extending them from textile substrates for wearing and weaving to functional carriers for energy,sensing,display,and information processing.Remarkable advances have recently been achieved in fibre-based energy harvesting,energy storage,sensing,and display technologies[1],[2],[3],[4]. 展开更多
关键词 intelligent closed loop fibre systems conventional fibres fibre electronics fibre integrated circuits conventional fibresextending textile substrates multilayered spiral architecture
暂未订购 下载PDF
Low-Carbon Economic Dispatch Strategy for Integrated Energy Systems with Blue and Green Hydrogen Coordination under GHCT and CET Mechanisms 认领 引用 被引量：1
4
作者 Aidong Zeng Zirui Wang +2 位作者 Jiawei Wang Sipeng Hao Mingshen Wang 《Energy Engineering》 EI 2025年第9期3793-3816,共24页
With the intensification of the energy crisis and the worsening greenhouse effect,the development of sustainable integrated energy systems(IES)has become a crucial direction for energy transition.In this context,this ... With the intensification of the energy crisis and the worsening greenhouse effect,the development of sustainable integrated energy systems(IES)has become a crucial direction for energy transition.In this context,this paper proposes a low-carbon economic dispatch strategy under the green hydrogen certificate trading(GHCT)and the ladder-type carbon emission trading(CET)mechanism,enabling the coordinated utilization of green and blue hydrogen.Specifically,a proton exchange membrane electrolyzer(PEME)model that accounts for dynamic efficiency characteristics,and a steam methane reforming(SMR)model incorporating waste heat recovery,are developed.Based on these models,a hydrogen production–storage–utilization framework is established to enable the coordinated deployment of green and blue hydrogen.Furthermore,the gas turbine(GT)unit are retrofitted using oxygenenriched combustion carbon capture(OCC)technology,wherein the oxygen produced by PEME is employed to create an oxygen-enriched combustion environment.This approach reduces energy waste and facilitates low-carbon power generation.In addition,the GHCT mechanism is integrated into the system alongside the ladder-type CET mechanism,and their complementary effects are investigated.A comprehensive optimization model is then formulated to simultaneously achieve carbon reduction and economic efficiency across the system.Case study results show that the proposed strategy reduces wind curtailment by 7.77%,carbon emissions by 65.98%,and total cost by 12.57%.This study offers theoretical reference for the low-carbon,economic,and efficient operation of future energy systems. 展开更多
关键词 Hydrogen utilisation low-carbon dispatch integrated energy systems carbon trading green hydrogen certificate trading
暂未订购 下载PDF
Geometric perspective of reciprocal transformations induced by conservation laws in integrable systems 认领 引用
5
作者 Faren Wang Senyue Lou Man Jia 《Communications in Theoretical Physics》 SCIE CAS CSCD 2026年第2期1-8,共8页
This paper presents a geometric perspective that connects reciprocal transformations with multidimensional integrable deformations.By interpreting conservation laws as closed 1-forms,we formalize reciprocal transforma... This paper presents a geometric perspective that connects reciprocal transformations with multidimensional integrable deformations.By interpreting conservation laws as closed 1-forms,we formalize reciprocal transformations as induced local diffeomorphisms on the jet bundle.This allows us to characterize higher-dimensional deformations as systematic fiber bundle extensions,where fiber coordinates are generated by potential functions of the conservation laws.This perspective provides an interpretation for the covariant lifting of Lax pairs to higher dimensions and reveals that auto-Bäcklund transformations are composite diffeomorphisms.These results are applied to several classical integrable models. 展开更多
关键词 integrable systems reciprocal transformation conservation laws fiber bundle Lax pairs Bäcklund transformation
暂未订购 下载PDF
Integrated sensing and communication system exceeding a 200 km repeaterless fiber link 认领 引用
6
作者 GUO ZHU XIANG CAI +4 位作者 FEI LIU XU YANG PERRY PING SHUM FAN ZHANG XIAN ZHOU 《Photonics Research》 SCIE EI CAS CSCD 2026年第5期1984-1992,共9页
Seamless integration and high-performance operation,including ultra-long transmission distance,high-speed communication capabilities,and high-precision event localization,are essential for advancing integrated sensing... Seamless integration and high-performance operation,including ultra-long transmission distance,high-speed communication capabilities,and high-precision event localization,are essential for advancing integrated sensing and communication(ISAC)systems over optical fiber.However,achieving all these attributes simultaneously remains a challenge in current systems.In this work,we propose a residual carrier-assisted,ultra-long ISAC scheme that enables high-speed data transmission and high-accuracy distributed vibration sensing with low complexity. 展开更多
关键词 integrated sensing communication high precision event localization ultra long fiber link residual carrier assisted integrated sensing communication isac systems high speed communication vibration sensing
暂未订购 下载PDF
Accelerated Distributed Cooperative Energy Management for Integrated Energy Systems 认领 引用
7
作者 Lining Liu Yulong Huang Chao Deng 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2025年第12期2589-2601,共13页
This paper is concerned with the problem of distributed coordination energy management of integrated energy systems(IESs). First, an energy management model for IESs is established and formulated as a distributed cons... This paper is concerned with the problem of distributed coordination energy management of integrated energy systems(IESs). First, an energy management model for IESs is established and formulated as a distributed constrained optimization problem. Then, an accelerated distributed event-triggered algorithm is developed to solve the problem. Compared with the existing algorithms, the developed algorithm simultaneously offers two advantages. On the one hand, the convergence speed of the algorithm is improved greatly by incorporating the second-order information. On the other hand, the algorithm is implemented with asynchronous communication by an eventtriggered mechanism, effectively reducing communication interact. Furthermore, the convergence and optimality of the algorithm are analyzed rigorously based on Lyapunov method.Finally, simulation studies are provided to validate the effectiveness of the algorithm. 展开更多
关键词 Distributed coordination energy management event-triggered integrated energy systems
暂未订购 下载PDF
Optimized Scheduling of an Integrated Electro-Gas Energy System with Hydrogen Storage Utilizing Information Gap Decision Theory 认领 引用
8
作者 Xu Liu Hongsheng Su 《Energy Engineering》 EI 2026年第4期356-381,共26页
Further investigation is warranted into the collaborative function of carbon capture and electrolysis-to-gas conversion technologies within integrated electro-gas energy systems,as well as optimized scheduling that ad... Further investigation is warranted into the collaborative function of carbon capture and electrolysis-to-gas conversion technologies within integrated electro-gas energy systems,as well as optimized scheduling that addresses the variability of wind and solar energy,to promote multi-energy complementarity and energy decarbonization while enhancing the capacity to absorb new energy.This work presents an optimized scheduling model for electro-gas integrated energy systems that include hydrogen storage,utilizing information gap decision theory(IGDT).A model is constructed that integrates the synergistic functions of carbon capture and storage(CCS),power-to-gas(P2G),and gas turbine units through electrical coupling.A carbon ladder trading mechanism is implemented to mitigate carbon emissions inside the system.A day-ahead optimization scheduling model is subsequently built to maximize system operational profit and ensure hydrogen storage safety,while considering economic viability,low-carbon performance,and safety.Secondly,the trinitrotoluene(TNT)equivalent approach and the half-lethal range were employed to quantify the safety concerns associated with hydrogen storage tanks,offering the model optimization guidance and conservative management.Ultimately,the CCS-P2G integrated operation accounted for the unpredictability in wind and solar energy production through the application of information gap decision theory.The model was solved using the GUROBI solver.The findings indicate that the proposed approach diminishes system carbon emissions by 66%,attains complete integration of wind and solar energy,and eliminates hazardous working time for hydrogen storage tanks,reducing it from 10 h to zero.It ensures system safety while guaranteeing profits of at least 90%of the anticipated value,accounting for changes in wind and solar output within±14%.This confirms the model’s efficacy in improving renewable energy integration rates,facilitating low-carbon,cost-effective,and secure system operation,while mitigating the unpredictability of renewable energy production. 展开更多
关键词 Integrated electro-gas energy systems information gap decision theory carbon capture and storage power-to-gas hydrogen storage risk quantification
暂未订购 下载PDF
Mechanistic insights into the amelioration effects of diabetic cardiomyopathy by berberine:an integrated systems pharmacology study and experimental validation 认领 引用
9
作者 Hui-Min Ji Wen Yang +10 位作者 Yu Hua Yi-Xuan Sun Ao-Di Li Yue Jiang Zi-Qi Ye Min Lei Xi-Ying Guo Xiu-Fen Liu Ning-Hua Wu Huan-Bo Cheng Qing-Jie Chen 《Traditional Medicine Research》 2025年第3期42-55,共14页
Background:Diabetic cardiomyopathy(DCM)is a type of cardiomyopathy caused by long-term diabetes,characterized by abnormal myocardial structure and function,which can lead to heart failure.Berberine(BBR),a quaternary a... Background:Diabetic cardiomyopathy(DCM)is a type of cardiomyopathy caused by long-term diabetes,characterized by abnormal myocardial structure and function,which can lead to heart failure.Berberine(BBR),a quaternary ammonium alkaloid isolated from Coptidis Rhizoma,a traditional Chinese medicine,has superior anti-diabetic and heart-protective properties.The purpose of this study is to assess the impact of BBR on DCM.Methods:This study used a systems pharmacology approach to evaluate the related proteins and signalling pathways between BBR and DCM targets,combined with experimental validation using diabetic mouse heart sections.Microstructural and pathological changes were observed using Hematoxylin-eosin,Masson’s trichrome stain and wheat germ agglutinin staining.Immunofluorescence and western blot were used to determine protein expression.Results:The results indicate that BBR and DCM share 21 core relevant targets,with cross-targets predominantly located in mitochondrial,endoplasmic reticulum,and plasma membrane components.BBR exerts its main effects in improving DCM by maintaining mitochondrial integrity,particularly involving the PI3K-AKT-GSK3βand apoptosis signalling pathways.In addition,post-treatment changes in the key targets of BBR,including cysteine aspartate specific protease(Caspase)-3,phosphoinositide 3-kinase(PI3K)and mitochondria-related proteins,are suggestive of its efficacy.Conclusion:BBR crucially improves DCM by maintaining mitochondrial integrity,inhibiting apoptosis,and modulating PI3K-AKT-GSK3βsignaling.Further studies must address animal model limitations and validate clinical efficacy to understand BBR’s mechanisms fully and its potential clinical use. 展开更多
关键词 berberine apoptosis integrated systems pharmacology diabetic cardiomyopathy
暂未订购 下载PDF
Coordinated Service Restoration of Integrated Power and Gas Systems with Renewable Energy Sources 认领 引用
10
作者 Xincong Shi Yuze Ji +2 位作者 Xinrui Wang Ruimin Tian Chao Zhang 《Energy Engineering》 EI 2025年第3期1199-1220,共22页
With the development of integrated power and gas distribution systems(IPGS)incorporating renewable energy sources(RESs),coordinating the restoration processes of the power distribution system(PS)and the gas distributi... With the development of integrated power and gas distribution systems(IPGS)incorporating renewable energy sources(RESs),coordinating the restoration processes of the power distribution system(PS)and the gas distribution system(GS)by utilizing the benefits of RESs enhances service restoration.In this context,this paper proposes a coordinated service restoration framework that considers the uncertainty in RESs and the bi-directional restoration interactions between the PS and GS.Additionally,a coordinated service restoration model is developed considering the two systems’interdependency and the GS’s dynamic characteristics.The objective is to maximize the system resilience index while adhering to operational,dynamic,restoration logic,and interdependency constraints.A method for managing uncertainties in RES output is employed,and convexification techniques are applied to address the nonlinear constraints arising from the physical laws of the IPGS,thereby reducing solution complexity.As a result,the service restoration optimization problem of the IPGS can be formulated as a computationally tractable mixed-integer second-order cone programming problem.The effectiveness and superiority of the proposed framework are demonstrated through numerical simulations conducted on the interdependent IEEE 13-bus PS and 9-node GS.The comparative results show that the proposed framework improves the system resilience index by at least 65.07%compared to traditional methods. 展开更多
关键词 Service restoration renewable energy sources integrated energy systems extreme events convex optimization
暂未订购 下载PDF
Photonic simulation of disordered spin systems on a silicon chip 认领 引用
11
作者 Alif Laila Muthali Patrik Isene Sund +11 位作者 Carlos F.D.Faurby Çağın Ekici Jeremy C.Adcock Jasper Glindemann Gennaro Zanfardino Luca Leuzzi Raffaele Santagati Fabrizio Illuminati Giancarlo Ruocco Marco Leonetti Stefano Paesani Yunhong Ding 《Advanced Photonics Nexus》 CSCD 2026年第2期15-21,共7页
The ability to simulate physical systems is essential for an understanding of their physical properties and advancing related technologies.However,simulating certain complex systems at scale,including many-body spin m... The ability to simulate physical systems is essential for an understanding of their physical properties and advancing related technologies.However,simulating certain complex systems at scale,including many-body spin models,is often a significant challenge for conventional computing approaches.Quantum simulators,employing controlled quantum systems that mimic the dynamics of a target system,can offer a more efficient approach.This work demonstrates the use of photonic circuits for quantum simulation of disordered spin systems,where quantum properties such as superposition and interference can be leveraged for a more efficient simulation.We fabricate and characterize a low-loss silicon-on-insulator chip with a buried aluminum mirror and a reconfigurable interferometer,which is employed in conjunction with two input photons to map the dynamics of a spin Hamiltonian with four-body interactions.Our results demonstrate several characteristics associated with the target system,such as spin-degenerate ground states and phase transitions,confirming the device's functionality as a quantum simulator of the spin system. 展开更多
关键词 quantum simulation silicon photonics disordered spin systems integrated quantum photonics
暂未订购 下载PDF
Sensor Fusion Models in Autonomous Systems:A Review 认领 引用
12
作者 Sangeeta Mittal Chetna Gupta Varun Gupta 《Computers, Materials & Continua》 SCIE EI 2026年第4期226-257,共32页
This survey presents a comprehensive examination of sensor fusion research spanning four decades,tracing the methodological evolution,application domains,and alignment with classical hierarchical models.Building on th... This survey presents a comprehensive examination of sensor fusion research spanning four decades,tracing the methodological evolution,application domains,and alignment with classical hierarchical models.Building on this long-term trajectory,the foundational approaches such as probabilistic inference,early neural networks,rulebasedmethods,and feature-level fusion established the principles of uncertainty handling andmulti-sensor integration in the 1990s.The fusion methods of 2000s marked the consolidation of these ideas through advanced Kalman and particle filtering,Bayesian–Dempster–Shafer hybrids,distributed consensus algorithms,and machine learning ensembles for more robust and domain-specific implementations.From 2011 to 2020,the widespread adoption of deep learning transformed the field driving some major breakthroughs in the autonomous vehicles domain.A key contribution of this work is the assessment of contemporary methods against the JDL model,revealing gaps at higher levels-especially in situation and impact assessment.Contemporary methods offer only limited implementation of higher-level fusion.The survey also reviews the benchmark multi-sensor datasets,noting their role in advancing the field while identifying major shortcomings like the lack of domain diversity and hierarchical coverage.By synthesizing developments across decades and paradigms,this survey provides both a historical narrative and a forward-looking perspective.It highlights unresolved challenges in transparency,scalability,robustness,and trustworthiness,while identifying emerging paradigms such as neuromorphic fusion and explainable AI as promising directions.This paves the way forward for advancing sensor fusion towards transparent and adaptive next-generation autonomous systems. 展开更多
关键词 Sensor fusion autonomous systems artificial intelligence machine learning sensor data integration intelligent systems
暂未订购 下载PDF
Large-scale integrated photonic accelerators for ultralow-latency and universal AI computing 认领 引用
13
作者 Xiangyan Meng Junshen Li +4 位作者 Kangwei Fei Yu Wang Wei Li Nuannuan Shi Ming Li 《Journal of Semiconductors》 EI CAS CSCD 2026年第6期12-15,共4页
Integrated silicon photonics has emerged as a transformative technology for post-Moore’s law computing,offering intrinsic advantages of high bandwidth,ultralow latency and low energy consumption that far exceed tradi... Integrated silicon photonics has emerged as a transformative technology for post-Moore’s law computing,offering intrinsic advantages of high bandwidth,ultralow latency and low energy consumption that far exceed traditional electronic computing architectures[1−4].As artificial intelligence(AI)models continue to grow in complexity and scale,the demand for high-speed,energy-efficient computing has spurred intensive research into photonic computing as a promising alternative to electronic accelerators[5−7].Matrix multiply−accumulate(MAC)operations,the core of deep learning and combinatorial optimization algorithms,are particularly amenable to photonic implementation,as light enables parallel multiplication and accumulation with minimal data movement[8,9].However,the practical application of photonic computing has long been hindered by critical challenges including large-scale integration of photonic components,electro-optical co-packaging,guaranteed computation accuracy of analog photonic systems,and compatibility with mainstream AI models and algorithms[10,11]. 展开更多
关键词 photonic computing integrated silicon photonics electronic computing ultralow latency matrix multiply accumulate analog photonic systems silicon photonics electronic accelerators matrix
暂未订购 下载PDF
Design of Energy-efficient Hierarchical Scheduling for Integrated Modular Avionics Systems 认领 引用 被引量：16
14
作者 ZHOU Tianran XIONG Huagang 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2012年第1期109-114,共6页
Recently the integrated modular avionics （IMA） architecture which introduces the concept of resource partitions becomes popular as an alternative to the traditional federated architecture. This study investigates th... Recently the integrated modular avionics （IMA） architecture which introduces the concept of resource partitions becomes popular as an alternative to the traditional federated architecture. This study investigates the problem of designing hierarchical scheduling for IMA systems. The proposed scheduler model enables strong temporal partitioning, so that multiple hard real-time applications can be easily integrated into an uniprocessor platform. This paper derives the mathematic relationships among parti- tion cycle, partition capacity and schedulability under the real-time condition, and then proposes an algorithm for optimizing partition parameters. Real-time tasks with arbitrary deadlines are considered for generality. To further improve the basic algo- rithm and reduce the energy consumption for embedded systems in aircraft, a power optimization approach is also proposed by exploiting the slack time. Experimental results show that the designed system can guarantee the hard real-time requirement and reduce the power consumption by at least 14%. 展开更多
关键词 system integration IMA real-time systems hierarchical scheduling power optimization schedulability analysis
暂未订购 下载PDF
Model-based robust estimation and fault detection for MEMS-INS/GPS integrated navigation systems 认领 引用 被引量：9
15
作者 Miao Lingjuan Shi Jing 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2014年第4期947-954,共8页
In micro-electro-mechanical system based inertial navigation system（MEMS-INS）/global position system（GPS） integrated navigation systems, there exist unknown disturbances and abnormal measurements. In order to obta... In micro-electro-mechanical system based inertial navigation system（MEMS-INS）/global position system（GPS） integrated navigation systems, there exist unknown disturbances and abnormal measurements. In order to obtain high estimation accuracy and enhance detection sensitivity to faults in measurements, this paper deals with the problem of model-based robust estimation（RE） and fault detection（FD）. A filter gain matrix and a post-filter are designed to obtain a RE and FD algorithm with current measurements, which is different from most of the existing priori filters using measurements in one-step delay. With the designed filter gain matrix, the H-infinity norm of the transfer function from noise inputs to estimation error outputs is limited within a certain range; with the designed post-filter, the residual signal is robust to disturbances but sensitive to faults. Therefore, the algorithm can guarantee small estimation errors in the presence of disturbances and have high sensitivity to faults. The proposed method is evaluated in an integrated navigation system, and the simulation results show that it is more effective in position estimation and fault signal detection than priori RE and FD algorithms. 展开更多
关键词 Fault detection Inertial navigation systems Integrated navigation Micro-electro-mechanicalsystem Robust estimation
暂未订购 下载PDF
A systematic review of MBSE-based safety analysis techniques in railway systems 认领 引用
16
作者 Jiaxu Chen 《Railway Sciences》 2026年第2期276-287,共12页
Purpose-With the development of railway systems towards intelligence,informatization and networking,their architecture design becomes increasingly complex.Traditional safety analysis methods(such as failure mode and e... Purpose-With the development of railway systems towards intelligence,informatization and networking,their architecture design becomes increasingly complex.Traditional safety analysis methods(such as failure mode and effects analysis(FMEA),fault tree analysis(FTA)and event tree analysis)can no longer realise integrated safety analysis across disciplines,domains and life cycles amid requirement drift,architecture iteration and operational scenario evolution.This paper aims to introduce a systematic,integrated,model-driven safety analysis framework for the entire life cycle of railway systems to address these complex safety challenges and improve the overall safety level of railway systems.Design/methodology/approach-First,the paper conducts a literature review of traditional railway safety analysis techniques and their applications,and analyzes the technical framework,core elements(modelling languages,methods,and tools),and advantages of Model-Based Systems Engineering(MBSE).Then,it studies the integration of MBSE and system safety analysis,focusing on typical international research cases(e.g.,the Methodology for the Description and Safety Analysis of Interoperable Systems(MeDISIS),the European Train Control System(ETCS)safety verification project SafeSysE,and the Reference Architecture for Model-Based System and Software Engineering in the Railway Domain(RAMSAS),etc.)and domestic research progress,and summarizes the core idea of integrating MBSE with safety analysis in the design process.Finally,it explores the key technologies of MBSE-based railway system safety analysis,including automatic mapping of architecture models to Fault Tree Analysis(FTA),dynamic linkage between behaviour models and Failure Mode and Effects Analysis(FMEA),multi-model collaboration and dynamic update,as well as technologies in three aspects:safety requirement analysis driven by railway operational tasks,integrated safety-function design analysis,and simulation-based safety verification via train-fleet operation modelling.The development and validation platform Platform for Integrated Systems and Mechatronic Engineering(PRISME)and tools such as the Dependability Engineering and Innovation System(DEIS),Behavior-Driven Development(BDD)frameworks,and International Business Machines(IBM)engineering suites were also utilized to support this research.Findings-The MBSE-based railway system safety analysis technique embeds safety activities into the forward-engineering workflow of MBSE-driven development,enabling concurrent safety and functional design.It solves the problems of model heterogeneity,data silos and process discontinuities in traditional safety analysis and realises end-to-end traceability and consistency from system requirements to safety analysis results.This technique not only provides a rigorous foundation for standardised,efficient and accurate safety assessment of railway systems but also offers technical support for early identification of potential safety issues,reduction of late-stage design changes and continuous optimisation of system safety performance.Originality/value-The innovation of this paper mainly includes three aspects:(1)It breaks the limitations of traditional document-driven safety analysis methods,constructs an MBSE-based integrated safety analysis framework covering the entire life cycle of railway systems and turns safety work from an ad-hoc add-on into a systematic,goal-oriented activity.(2)It proposes key integration technologies such as automatic mapping of SysML-based architecture models to FTA,dynamic linkage between behaviour models(state machine diagram/activity diagram)and FMEA and multi-model(FTA/FMEA/hazard and operability analysis)collaborative dynamic update,which guarantee the consistency and traceability of safety analysis data and improve the efficiency of safety analysis iteration.(3)It develops a set of MBSE-based railway safety analysis implementation paths,including task-driven safety requirement decomposition,integrated safety function failure propagation modelling and train-fleet operation simulation-based verification,providing a practical technical solution for the safety design and analysis of complex railway systems. 展开更多
关键词 Railway Model-based systems engineering(MBSE) Safety analysis technology Model-driven System integration
暂未订购 下载PDF
Resilience of gas interchangeability in hydrogen-blended integrated electricity and gas systems:A transient approach with dynamic gas composition tracking 认领 引用 被引量：1
17
作者 Sheng Wang Hongxun Hui Pierluigi Siano 《iEnergy》 2023年第2期143-154,共12页
Green hydrogen can be produced by consuming surplus renewable generations.It can be injected into the natural gas networks,accelerating the decarbonization of energy systems.However,with the fluctuation of renewable e... Green hydrogen can be produced by consuming surplus renewable generations.It can be injected into the natural gas networks,accelerating the decarbonization of energy systems.However,with the fluctuation of renewable energies,the gas composition in the gas network may change dramatically as the hydrogen injection fluctuates.The gas interchangeability may be adversely affected.To investigate the ability to defend the fluctuated hydrogen injection,this paper proposes a gas interchangeability resilience evaluation method for hydrogen-blended integrated electricity and gas systems(H-IEGS).First,gas interchangeability resilience is defined by proposing several novel metrics.Then,A two-stage gas interchangeability management scheme is proposed to accommodate the hydrogen injections.The steady-state optimal electricity and hydrogen-gas energy flow technique is performed first to obtain the desired operating state of the H-IEGS.Then,the dynamic gas composition tracking is implemented to calculate the real-time traveling of hydrogen contents in the gas network,and evaluate the time-varying gas interchangeability metrics.Moreover,to improve the computation efficiency,a self-adaptive linearization technique is proposed and embedded in the solution process of discretized partial derivative equations.Finally,an IEEE 24 bus reliability test system and Belgium natural gas system are used to validate the proposed method. 展开更多
关键词 Integrated electricity and gas systems gas composition hydrogen resilience renewable energy
暂未订购 下载PDF
Research on Flexible GaInP/GaInAs/Ge/Bi2Te3/Sb2Te3 PV-TE Integrated Systems 认领 引用
18
作者 GAO Peng CHEN Lilin +4 位作者 WU Bo ZHANG Qiming XUE Chao HOU Chengyi SUN Qiang 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2019年第4期781-786,共6页
An optimal structure design of the lattice mismatched GaInP/GaInAs/Ge solar cell with high photoelectric conversion efficiency was proposed. Two-dimensional Bi2Te3/Sb2Te3 nanosheets were prepared by solvothermal synth... An optimal structure design of the lattice mismatched GaInP/GaInAs/Ge solar cell with high photoelectric conversion efficiency was proposed. Two-dimensional Bi2Te3/Sb2Te3 nanosheets were prepared by solvothermal synthesis method used as thermoelectric(TE) functional materials, which is further hybrid with high conductive reduced graphene oxide(rGO) and carbon nanotubes(CNTs). TE film was then fabricated based on above materials. The power factor of the n-type TE film is 19.31 μW/mK2, and the power factor of the p-type TE film is 97.40 μW/mK2. The flexible TE device was integrated with flexible solar cell. Compared with the single photovoltaic(PV) cell, the efficiency of the as-prepared flexible integrated device measured under the AM1.5 illumination is significantly improved. The efficiency of the two parallel tests is increased from 27.26% and 26.59%, to 29.11% and 28.92%, respectively. The increasing ratio reaches 6.7%-8.8%. 展开更多
关键词 GaInP/GaInAs/Ge flexible thermoelectric integrated systems
暂未订购 下载PDF
Low-Carbon Economic Dispatch of Electric-Thermal-Hydrogen Integrated Energy System Based on Carbon Emission Flow Tracking and Step-Wise Carbon Price 认领 引用
19
作者 Yukun Yang Jun He +2 位作者 Wenfeng Chen Zhi Li Kun Chen 《Energy Engineering》 EI 2025年第11期4653-4678,共26页
To address the issues of unclear carbon responsibility attribution,insufficient renewable energy absorption,and simplistic carbon trading mechanisms in integrated energy systems,this paper proposes an electricheat-hyd... To address the issues of unclear carbon responsibility attribution,insufficient renewable energy absorption,and simplistic carbon trading mechanisms in integrated energy systems,this paper proposes an electricheat-hydrogen integrated energy system(EHH-IES)optimal scheduling model considering carbon emission stream(CES)and wind-solar accommodation.First,the CES theory is introduced to quantify the carbon emission intensity of each energy conversion device and transmission branch by defining carbon emission rate,branch carbon intensity,and node carbon potential,realizing accurate tracking of carbon flow in the process of multi-energy coupling.Second,a stepped carbon pricing mechanism is established to dynamically adjust carbon trading costs based on the deviation between actual carbon emissions and initial quotas,strengthening the emission reduction incentive.Finally,a lowcarbon economic dispatch model is constructed with the objectives of minimizing operation cost,carbon trading cost,wind-solar curtailment penalty cost,and energy loss.Simulation results show that compared with the traditional economic dispatch scheme 3,the proposed schemel reduces carbon emissions by 53.97%and wind-solar curtailment by 68.89%with a 16.10%increase in total cost.This verifies that the model can effectively improve clean energy utilization and reduce carbon emissions,achieving low-carbon economic operation of EHH-IES,with CES theory ensuring precise carbon flow tracking across multi-energy links. 展开更多
关键词 Carbon emission streams integrated energy systems stepped carbon price low carbon economic dispatch wind-solar accommodation
暂未订购 下载PDF
A Distributionally Robust Optimization Scheduling Model for Regional Integrated Energy Systems Considering Hot Dry Rock Co-Generation 认领 引用
20
作者 Hao Qi Mohamed Sharaf +2 位作者 Andres Annuk Adrian Ilinca Mohamed A.Mohamed 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第8期1387-1404,共18页
Hot dry rock(HDR)is rich in reserve,widely distributed,green,low-carbon,and has broad development potential and prospects.In this paper,a distributionally robust optimization(DRO)scheduling model for a regionally inte... Hot dry rock(HDR)is rich in reserve,widely distributed,green,low-carbon,and has broad development potential and prospects.In this paper,a distributionally robust optimization(DRO)scheduling model for a regionally integrated energy system(RIES)considering HDR co-generation is proposed.First,the HDR-enhanced geothermal system(HDR-EGS)is introduced into the RIES.HDR-EGS realizes the thermoelectric decoupling of combined heat and power(CHP)through coordinated operation with the regional power grid and the regional heat grid,which enhances the system wind power(WP)feed-in space.Secondly,peak-hour loads are shifted using price demand response guidance in the context of time-of-day pricing.Finally,the optimization objective is established to minimize the total cost in the RIES scheduling cycle and construct a DRO scheduling model for RIES with HDR-EGS.By simulating a real small-scale RIES,the results show that HDR-EGS can effectively promote WP consumption and reduce the operating cost of the system. 展开更多
关键词 Energy harvesting integrated energy systems optimum scheduling time-of-use pricing demand response geothermal energy
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 250 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈