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SSRN 2023年

作者： Yi, Lingzhi Xu, Xiangxiang Wang, Yahui Liu, Jiangyong Gao, Yuhang Tang, Bo College of Automation and Electronic Engineering Xiangtan University Hunan Xiangtan411105 China Hunan Engineering Research Center of Multi-energy Cooperative Control Technology Hunan Xiangtan411105 China College of Electrical and Information Engineering Hunan University Hunan Changsha410082 China Wasion Group Limited Hunan Changsha410205 China

Buildings account for 10% of the country's total energy consumption, resulting in significant power consumption and cost overruns. To reduce energy consumption in buildings and achieve "smart energy saving and green development", non-intrusive load decomposition and monitoring technology has become an important approach to build smart buildings. However, the various types of smart home loads and disordered electricity consumption habits of customers make it difficult to achieve accurate disaggregation. Traditional load decomposition methods have limited characterization capabilities, leading to low accuracy of load decomposition. To improve the characterization ability of load features, a non-intrusive load decomposition based on parallel connection network and attention mechanism is proposed. The proposed method reduces network depth by incorporating "parallel connections", thereby reducing the risk of overfitting. In addition, the dilated residual convolutional neural network and the bidirectional long short-term memory network are respectively connected in parallel to extract features, which greatly improves the representation ability of features. The attention mechanism is introduced to eliminate redundant information, focus on important information, and improve the decomposition performance. Finally, the domestic self-assessment data set is used, and different evaluation indicators are used for evaluation and comparison with other commonly used models. The validation results show that the decomposition accuracy of the proposed method is significantly improved. © 2023, The Authors. All rights reserved.

关键词： Electric power utilization

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Fire Status Sensing of Oil-immersed Power Transformers Based on TOPSIS Method and Combination Weighting of Game Theory

Fire Status Sensing of Oil-immersed Power Transformers Based...

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IEEE International Conference on energy Internet (ICEI)

作者： Xinyu Pi Tao Feng Xunjian Xu Yi Ouyang Yahui Wang Xingren Su State Key Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment State Grid Hunan Electric Power Company Disaster Prevention and Reduction Center Changsha China College of Automation and Electronic Engineering Xiangtan University & Hunan Engineering Research Center of Multi-Energy Cooperative Control Technology Xiangtan China

ISBN: (数字)9798331523558

ISBN: (纸本)9798331523565

The oil-immersed power transformer plays a crucial role in ensuring the safe and stable operation of the entire power system, highlighting the significance of enhancing the precision of its fire detection Aiming at the problems of difficulty in status sensing and inaccurate sensing results of traditional oil-immersed transformer status sensing models, a fire status sensing model for oil-immersed power transformers based on TOPSIS (Technique for order preference by similarity to an ideal solution) method and combination weighting of game theory is proposed in this paper. The model combines subjective weighting with objective weighting, while using game theory to determine the subjective and objective weight coefficients, eliminating human influence, and the TOPSIS method determines the final status sensing results. The test data of oil-imm supplied by a power company serves as the verification and analysis sample. This paper focuses on the oil-immersed power transformer, a key equipment in the power system, and carries out research on fire state sensing, which promotes the progress of state sensing technology and is of great significance to ensure the safe and stable operation of the power system and the normal life of residents, and providing early warning of potential fires, which holds significant practical implications in engineering.

关键词： energy Internet Companies Oil insulation Reliability theory Sensors Power transformers Game theory Monitoring

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Ammonium Sensing Patch with Ultrawide Linear Range and Eliminated Interference for Universal Body Fluids Analysis

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Nano-Micro Letters 2025年第4期17卷 332-346页

作者： Mingli Huang Xiaohao Ma Zongze Wu Jirong Li Yuqing Shi Teng Yang Jiarun Xu Shuhan Wang Kongpeng Lv Yuanjing Lin School of Microelectronics Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Interventional Radiology Shenzhen People’s HospitalShenzhen 518020People’s Republic of China College of Mechanical and Energy Engineering Shaoyang UniversityShaoyang 422000HunanPeople’s Republic of China Shenzhen Hainwise Medical Technology Co. LTDShenzhen 518118People’s Republic of China Shenzhen Institute for Drug Control(Shenzhen Testing Center of Medical Devices) Shenzhen 518000People’s Republic of China Institute of Innovative Materials Guangming Advanced Research InstituteSouthern University of Science and TechnologyShenzhen 518055People’s Republic of China

Ammonium level in body fluids serves as one of the critical biomarkers for healthcare,especially those relative to liver *** continuous and real-time monitoring in both invasive and noninvasive manners is highly desired,while the ammonium concentrations vary largely in different body ***,the sensing reliability based on ion-selective biosensors can be significantly interfered by potassium *** tackle these challenges,a flexible and biocompatible sensing patch for wireless ammonium level sensing was reported with an ultrawide linear range for universal body fluids including blood,tears,saliva,sweat and *** as-prepared biocompatible sensors deliver a reliable sensitivity of 58.7 mV decade-1 in the range of 1-100 mM and a desirable selectivity coefficient of 0.11 in the interference of potassium ions,attributed to the cross-calibration within the sensors *** sensor’s biocompatibility was validated by the cell growth on the sensor surface(>80%),hemolysis rates(<5%),negligible cellular inflammatory responses and weight changes of the mice with implanted *** biocompatible sensors with ultrawide linear range and desirable selectivity open up new possibility of highly compatible biomarker analysis via different body fluids in versatile approaches.

关键词： Biocompatible sensors Implantable bioelectronics Ammonium sensing Cross-calibration Ultrawide linear range

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Stochastic Game Dynamic Reconfiguration Optimal Method of the Distribution Network Under Uncertain Electric Vehicle Shared Charging

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SSRN 2023年

作者： Chen, Jie Zhang, Hongwei Tan, Mao Cao, Yijia Zhang, Zhidan Hunan Engineering Research Center of Multi-energy Cooperative Control Technology College of Automation and Electronic Information Xiangtan University Xiangtan411105 China College of Electrical and Information Engineering Hunan University Changsha410082 China Hunan Electric Power Research Institute of State Grid Changsha410208 China

Since the large-scale shared charging behaviors of electric vehicles (EVs) will bring new challenges to the safe operation of the distribution network, the active distribution network reconfiguration (DNR) now becomes a reliable method to alleviate the impact of EV shared charging. Considering the uncertainty and coupling of EV shared charging, this paper proposes a dynamic DNR method using the stochastic game. Firstly, a stochastic game DNR model with EVs participating in shared charging is constructed, which characterizes the degree of utility equilibrium between multi-stakeholders. Secondly, a multi-scale preference characteristic utility function considering the uncertainty of EV response is designed, which accurately quantifies the potential dynamic coupling information between EV sharing charging load transfer and node load aggregator (NLA). Lastly, the existence of the equilibrium solution of the model is proved by the Kakutani fixed point theorem. The multi-subjects stochastic game model is solved by independent Q-learning (IQL) to obtain the equilibrium solution of the game under bounded rationality. Simulations on the IEEE 33-node distribution system are conducted to validate the effectiveness of the proposed method, which demonstrates the extensive potential applications in DNR. © 2023, The Authors. All rights reserved.

关键词： Electric vehicles

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A Task Scheduling Method for Edge Computing in Intelligent Building System 11

A Task Scheduling Method for Edge Computing in Intelligent B...

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11th IEEE Annual International Conference on CYBER technology in Automation, control, and Intelligent Systems, CYBER 2021

作者： Yi, Lingzhi Feng, Xiaodong Gao, Xieyi Fan, Lv Song, Huina Jiang, Peng Hunan Multi-energy Cooperative Control Technology Engineering Research Center School of Automation and Electronic Information Xiangtan University School of Automation and Electronic Information of Xiangtan University XiangtanHunan China Willfar Information Technologies Co Ltd

ISBN: (纸本)9781665425278

Edge computing is a new computing method. Task scheduling for edge computing is an important way to meet user needs. With the rapid development of the Internet of Things and communication technologies, network data has exploded, resulting in traditional cloud computing no longer adapt to the various needs of home users in intelligent building system. Firstly, the mathematical model of the system is established, in order to solve this practical problem, considering the communication time, task completion time and CPU energy consumption comprehensively. Then, the SSA-GA hybrid scheduling algorithm is proposed, where the search mechanism of single gene mutation of GA is introduced to make up for the defects of SSA algorithm, while giving attention to the search ability and optimization efficiency. The model is verified by SSA-GA. The simulation results show that SSA-GA has better performance than other algorithms. © 2021 IEEE.

关键词： Edge computing

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Linearization threshold condition and stability analysis of a stochastic dynamic model of one-machine infinite-bus (OMIB) power systems

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Protection and control of Modern Power Systems 2021年第1期6卷 242-252页

作者： Lijuan Li Yongdong Chen Bin Zhou Hongliang Liu Yongfei Liu College of Automation and Electronic Information Hunan Engineering Research Center of Multi energy Cooperative Control TechnologyXiangtan UniversityXiangtan411105China College of Automation and Electronic Information Xiangtan UniversityXiangtan411105China College of Electrical and Information Engineering Hunan UniversityChangsha410082China College of Mathematics and Computational Science Xiangtan UniversityXiangtan411105China State Grid Jiangsu Electric Power Co.Electric Power Research Institute Nanjing210000China

With the increase in the proportion of multiple renewable energy sources, power electronics equipment and new loads, power systems are gradually evolving towards the integration of multi-energy, multi-network and multi-subject affected by more stochastic excitation with greater intensity. There is a problem of establishing an effective stochastic dynamic model and algorithm under different stochastic excitation intensities. A Milstein-Euler predictor-corrector method for a nonlinear and linearized stochastic dynamic model of a power system is constructed to numerically discretize the models. The optimal threshold model of stochastic excitation intensity for linearizing the nonlinear stochastic dynamic model is proposed to obtain the corresponding linearization threshold condition. The simulation results of one-machine infinite-bus (OMIB) systems show the correctness and rationality of the predictor-corrector method and the linearization threshold condition for the power system stochastic dynamic model. This study provides a reference for stochastic modelling and efficient simulation of power systems with multiple stochastic excitations and has important application value for stability judgment and security evaluation.

关键词： Power system stability Stochastic dynamic model Stochastic excitation Stochastic processes Threshold condition

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Bionic microchannels for step lifting transpiration

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International Journal of Extreme Manufacturing 2023年第2期5卷 244-252页

作者： Zhaolong Wang Qiu Yin Ziheng Zhan Wenhao Li Mingzhu Xie Huigao Duan Ping Cheng Ce Zhang Yongping Chen Zhichao Dong Interdisciplinary Research Center of Low-carbon Technology and Equipment College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082People’s Republic of China MOE Key Laboratory for Power Machinery and Engineering School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Qian Xuesen Laboratory of Space Technology China Academy of Space Technology(CAST)Beijing 100094People’s Republic of China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhouJiangsu 215009People’s Republic of China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096People’s Republic of China Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interface Sciences Technical Institute of Physics and ChemistryChinese Academy of Sciences100190 BeijingPeople’s Republic of China

Those various cross-sectional vessels in trees transfer water to as high as 100 meters,but the traditional fabrication methods limit the manufacturing of those vessels,resulting in the non-availability of those bionic ***,we fabricate those bionic microchannels with various cross-sections by employing projection micro-stereolithography(PμSL)based 3D printing *** circumradius of bionic microchannels(pentagonal,square,triangle,and five-pointed star)can be as small as 100μm with precisely fabricated sharp ***'s more,those bionic microchannels demonstrate marvelous microfluidic performance with strong precursor effects enabled by their sharp *** significantly,those special properties of our bionic microchannels enable them outstanding step lifting performance to transport water to tens of millimeters,though the water can only be transported to at most 20 mm for a single bionic *** mimicked transpiration based on the step lifting of water from bionic microchannels is also *** precisely fabricated,low-cost,various cross-sectional bionic microchannels promise applications as microfluidic chips,long-distance unpowered water transportation,step lifting,mimicked transpiration,and so on.

关键词： bionic microchannel microfluidics water transportation step lifting 3D printing

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Enhancing the performance of CaTiO3-GDC heterostructure electrolytes in LT-CFCs

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Ceramics International 2025年第15期51卷 20131-20142页

作者： Li, Dongchen Cui, Yingying Hong, Xiaofang Shah, M.A.K. Yousaf Mushtaq, Naveed Rauf, Sajid Arshad, Naila Irshad, Sultan Alodhayb, Abdullah N. Yousaf, Muhammad Lu, Yuzheng Department of Electrical and Automation Shandong Labor Vocational and Technical College Jinan250300 China Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Joint Research Center School of Energy and Environment Southeast University No.2 Si Pai Lou Nanjing210096 China College of Mechatronics and Control Engineering Shenzhen University Guangdong Province 518000 China School of Physics Electronics and Intelligent Manufacturing Huaihua University Hunan Huaihua418008 China College of Electronics and Information Engineering Shenzhen University Guangdong Province 518000 China Department of Physics and Astronomy College of Science King Saud University Riyadh11451 Saudi Arabia College of Chemistry and Environmental Engineering Shenzhen University Guangdong Province Shenzhen518055 China School of Electronic Engineering Nanjing Xiaozhuang University Nanjing211171 China

Designing ceramic fuel cells (CFCs) with fast ionic conduction and superior electrochemical performance at low temperatures is critical for advancing hydrogen applications. Here, we developed a heterostructure electrolyte by combining the ionic conductor Gd0.1Ce0.9O2 (GDC) with the semiconductor material CaTiO3 (CTO) to shape into the composite heterostructure (semiconductor ionic heterostructure) CTO-GDC. The designed heterostructure with different fermi levels established the depletion zone due to the redistribution of charges at the interface, leading to enhancement of the ionic conduction;meanwhile, the established built-in electric field suppresses the electronic conduction speed of the ion's transportation at the interface of the constructed heterostructure (CTO-GDC). The formation of heterostructure introduces a number of oxygen vacancies, as confirmed via x-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR), benefiting the transportation of ions in the composite heterostructure. The prepared composite heterostructure shows the highest power output of 810 mW/cm2 at a low operational temperature of 520 °C. The CTO-GDC shows high ionic conductivity of 0.17 S cm−1 at 520 °C and low activation energy of 0.785 eV at 520-420 °C. The composite containing a 50 % molar ratio of GDC and CTO demonstrated exceptional performance by successfully inhibiting electron transit, improving ionic conductivity, and achieving outstanding power output. The enhanced ionic conductivity with low activation energy of composite heterostructure suggests that designing a heterostructure seems an efficient approach to fuel cell application. © 2025

关键词： Paramagnetic resonance

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Vector control Strategy of Permanent Magnet Synchronous Linear Motor Based on Sliding Mode Speed controller and Model Reference Adaptive 13

Vector Control Strategy of Permanent Magnet Synchronous Line...

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13th International Symposium on Linear Drives for Industry Applications, LDIA 2021

作者： Li, Chao Lan, Zhiyong Cai, Bingbing Zheng, Qiuhui College of Automation and Electronic Information Xiangtan University XiangTan China Multi-Energy Collaborative Control Technology Hunan Engineering Research Center XiangTan China Jianglu Machinery Electronics Group Co. Ltd XiangTan China Changsha Epoch Nc CO. Ltd XiangTan China

ISBN: (纸本)9781728172101

Aiming at the problems of poor stability and low system accuracy in the vector control of permanent magnet synchronous linear motor (PMSLM), a vector control strategy for PMSLM based on model reference adaptive system (MRAS) is proposed. Improve the accuracy of speed and mover position estimation by selecting the appropriate adaptive law, and introduce a sliding mode control (SMC) strategy in the speed loop to optimize the vector control system. The simulation results shows that this method can effectively reduce the overshoot and chattering, and improve the stability of the system. © 2021 IEEE

关键词： Sliding mode control

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Cysteine and Dialysis Mediated Inhibition of Dynamic Changes in Glycosylated Egg White Protein During Storage

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SSRN 2025年

作者： Guo, Lulu Zhang, Wanqiu Zhang, Fan Hu, Shende Zhao, Qianwen Chang, Cuihua Li, Junhua Zhu, Min Gu, Luping Yang, Yanjun Su, Yujie Huang, Zijian State Key Laboratory of Food Science and Resources School of Food Science and Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University Jiangsu Wuxi214122 China College of Bioscience and Biotechnology Hunan Agricultural University Hunan Changsha410128 China Hunan Jiapin Jiawei Technology Development Group Co. LTD Hunan Engineering & Technology Research Center for Food Flavors and Flavorings Hunan Jinshi415400 China

Glycosylation is commonly used to improve the solubility and functionality of egg white protein (EWP), but glycosylated EWP is prone to quality deterioration during storage. To enhance its storage stability, cysteine (Cys) addition and dialysis desugar treatment were applied to xylo-oligosaccharide (XOS) glycosylated EWP (GEW) in accelerated storage examinations. Both Cys addition and dialysis minimized changes in soluble protein content, color difference, and particle size during storage. Further, they inhibited the Maillard reaction and the accumulation of its intermediate products. Cys addition effectively maintained protein structures and prevented protein crosslinking. However, dialysis lost the filling and protective effect of free sugars, lowering the denaturation temperature of ovalbumin. Cys and dialysis effectively maintained the stability of emulsifying properties, while cysteine better preserved gelation. Overall, both Cys addition and dialysis effectively enhanced the storage stability of GEW, with Cys proving to be more effective. © 2025, The Authors. All rights reserved.

关键词： Reaction intermediates

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