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Research on the Impact of Water-Ingression Defects on the Electromagnetic-Thermal Fluctuation and Heat Distribution Characteristics of High Voltage Cable Terminals

SSRN

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SSRN 2023年

作者： Liu, Xingmou Yang, Hui Xu, Qiqi Lin, Haibo Yang, Yongming Jadoon, Ammad Chongqing Key Laboratory of Complex Systems and Bionic Control Chongqing University of Posts and Telecommunications Chongqing400065 China State Key Laboratory of Power Transmission Equipment & System Security and New Technology School of Electrical Engineering Chongqing University Chongqing University Chongqing400044 China NFC-Institute of Engineering &Technology Multan Pakistan

High voltage cable terminals (HVCT) usually work outdoors with water-ingression defect which affects the normal operation of the power system. This paper presents the study of the influence of different water-ingression depth on the temperature distribution of HVCT. Firstly, the model of EM-thermal-fluid coupling field of HVCT was established using finite element method in line with the structural parameters of YJZWC4 HVCT. Subsequently, the effectiveness of the model is then verified by comparing the operation of the model under the actual HVCT. And then, the analysis results of temperature show that the surface temperature of the HVCT at the inlet part is significantly higher than that of the insulating oil part. And The influent depth is positively correlated with surface temperature and temperature gradient. The distortion of the electric field will be more serious due to the deepening of the depth of the inlet water. Finally, the variation of temperature and field strength with the depth of inlet water is summarized by mathematical fitting method. The research results accurately reflect the electromagnetic thermal characteristics of the HVCT under the influent state and provide a reliable technical means for the state prediction and fault diagnosis of the cable terminals. © 2023, The Authors. All rights reserved.

关键词： Atmospheric temperature

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Understanding cross-market strategic behaviors of prosumers: An equilibrium-driven evolutionary game approach

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Journal of Cleaner Production 2025年 513卷

作者： Kang, Kai Su, Yifan Yang, Peng Wang, Zhaojian Zhang, Yunfan Qi, Ning Liu, Feng State Key Laboratory of Power System Operation and Control Department of Electrical Engineering Tsinghua University Beijing100084 China School of Electrical Engineering Chongqing University Chongqing400044 China School of Electronics and Information Xi'an Polytechnic University Xi'an710048 China Department of Automation Shanghai Jiao Tong University Shanghai200240 China China Electric Power Planning & Engineering Institute Beijing100088 China Department of Earth and Environmental Engineering Columbia University New YorkNY10027 United States

The rise of prosumers and the success of the sharing economy have catalyzed the development of energy sharing market (ESM), which is set to coexist with the conventional distribution energy market (DEM). However, the behaviors of prosumers within this evolving landscape remain underexplored due to the complex interactions among prosumers, ESM, and DEM. This paper presents a novel equilibrium-driven evolutionary game (EDEG) model that allows prosumers with bounded rationality to trade energy and choose participation in DEM, ESM, or both. Unlike previous studies, prosumers’ profits in this model are determined by the market-clearing equilibria, which in turn influence their market selection. The prosumers’ bidding strategies make the market clearing a hard-solving generalized Nash game (GNG). To overcome this, we convert the GNG into an equivalent, more tractable optimization problem, and then incorporate the generalized Nash equilibrium (GNE) into the EDEG model. Building on this foundation, we derive a solution algorithm and establish sufficient convergence conditions for the model. Additionally, by analyzing the equilibria, the EDEG model sheds light on the prosumers’ market selection preferences, cross-market strategic behaviors, sharp price jumping in ESM, and the conditions necessary for the stable coexistence of ESM and DEM. Furthermore, an improved pricing scheme for DEM is proposed to mitigate cross-market arbitrage behaviors and alleviate market price volatility. Finally, the simulations of six prosumer groups over 10,000 days (approximately 27.4 years) validate the theoretical findings and show the effectiveness of the improved scheme in suppressing cross-market arbitrage and stabilizing the electricity price for ESM. © 2025

关键词： Cross-market strategic behavior Distribution energy market Energy sharing market Evolutionary game Generalized Nash equilibrium

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Solarsam: Building-Scale Photovoltaic Potential Assessment Based on Segment Anything Model (Sam) and Remote Sensing for Emerging City

SSRN

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SSRN 2024年

作者： Li, Guanglei Wang, Guohao Luo, Tengqi Hu, Yuxiao Wu, Shouyuan Gong, Guanghui Song, Chenchen Guo, Zhiling Liu, Zhengguang Key Laboratory of Power System Intelligent Dispatch and Control Ministry of Education Shandong University Jinan250061 China Department of Power and Electrical Engineering Northwest A&F University Yangling712100 China The Hong Kong Polytechnic University Hong Kong Eastern Institute of Technology Ningbo315200 China Higher Information Industry Technology Research Institute Beijing Information Science and Technology University Beijing100192 China Department of Chemical Engineering The University of Manchester ManchesterM13 9PL United Kingdom

Driven by advancements in photovoltaic (PV) technology, solar energy has emerged as a promising renewable energy source, due to its ease of integration onto building rooftops, facades, and windows. For the emerging cities, the lack of detailed street-level data presents a challenge for effectively assessing the potential of building-integrated photovoltaic (BIPV). To address this, this study introduces SolarSAM, a novel BIPV evaluation method that leverages remote sensing imagery and deep learning techniques, and an emerging city in northern China is utilized to validate the model performance. During the process, SolarSAM segmented various building rooftops using text prompt guided semantic segmentation. Separate PV models were then developed for Rooftop PV, Facade-integrated PV, and PV windows systems, using this segmented data and local climate information. The potential for BIPV installation, solar power generation, and city-wide power self-sufficiency were assessed, revealing that the annual BIPV power generation potential surpassed the city’s total electricity consumption by a factor of 2.5. Economic and environmental analysis were also conducted, including levelized cost of electricity and carbon reduction calculations, comparing different BIPV systems across various building categories. These findings demonstrated the model’s performance and reveled the potential of BIPV power generation in the future. © 2024, The Authors. All rights reserved.

关键词： Solar power generation

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Design and Application of Intelligent Management and control system of the Installation of URV Oil-Immersed Main Transformer Based on Internet of Things

Design and Application of Intelligent Management and Control...

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IEEE International Conference on power and Energy systems (ICPES)

作者： Ran Dong Xiaosong Wang Yan Wang Zhen Liu Lei Hou Xuan Dong Sha Yang Donghong Cao Chengwei Zhang State Grid UHV Engineering Construction Company Beijing China NARI Group (State Grid Electric Power Research Institute) Co. Ltd NARI Nanjing Control System Co. Ltd Nanjing China

Aiming at the problems in the installation process of UHV (ultra-high voltage) oil immersed main transformer, such as lack of visual monitoring means and low degree of automation, this paper designs an intelligent management and control system for the installation of UHV oil-immersed main transformer based on Internet of Things. The configuration of key index monitoring sensors in the perception layer and the modification scheme of primary equipment are given, a local monitoring and control system based on PLC control logic is developed, a long-distance communication scheme based on the combination of broadband and narrowband wireless networking technology is proposed, and a substation background monitoring system with WEB remote access function is developed. It realizes the whole process online monitoring and recording of the key indicators of quality control and key processes of the main transformer installation, and the automatic control of part of the installation processes. The practical results show that the application of the system effectively guarantees the quality of equipment installation and improves the construction efficiency.

关键词： Wireless sensor networks Substations Automation Oils Process control Oil insulation Transformers

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Development of a UAV-based system for Technical Diagnostics of Overhead power Lines

Development of a UAV-based System for Technical Diagnostics ...

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International Conference on Computational Problems of Electrical engineering (CPEE)

作者： Oleksandr Kozlovskyi Dmitro Trushakov Serhiy Rendzinyak Vasyl Korud Department of Electrical Systems and Energy Management Central Ukrainian National Technical University Kropyvnytskyi Ukraine Department of Automation and Control in Technical Systems Central Ukrainian National Technical University Kropyvnytskyi Ukraine Faculty of Electronics and Computer Technologies Ivan Franko National University of Lviv Lviv Ukraine Institute of Power Engineering and Control System Lviv Polytechnic National University Lviv Ukraine

The problems associated with the operation of overhead power lines and ways of improving control over their condition with the help of UAVs are considered. A structural diagram of the system of technical diagnostics of overhead lines based on UAVs was developed, for which the necessary diagnostic parameters were selected according to informative criteria. An analysis of types of UAVs was carried out in order to determine their suitability and efficiency of use for diagnosing the condition of overhead lines.

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Applications of MXenes in human-like sensors and actuators

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Nano Research 2023年第4期16卷 5767-5795页

作者： Jinbo Pang Songang Peng Chongyang Hou Xiao Wang Ting Wang Yu Cao Weijia Zhou Ding Sun Kai Wang Mark H.Rümmeli Gianaurelio Cuniberti Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinan 250022China Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresden 01069Germany Center for Advancing Electronics Dresden Technische Universität DresdenDresden 01069Germany Dresden Center for Computational Materials Science Technische Universität DresdenDresden 01062Germany Dresden Center for Intelligent Materials(GCL DCIM) Technische Universität DresdenDresden 01062Germany High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353China School of Bioengineering Qilu University of TechnologyShandong Academy of ScienceJinan 250353China Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology(Ministry of Education) Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Weihai Innovation Research InstituteQingdao UniversityQingdao 266000China School of Electrical and Computer Engineering Jilin Jianzhu UniversityChangchun 130118China Institute for Complex Materials Leibniz Institute for Solid State and Materials Research Dresden(IFW Dresden)20 Helmholtz StrasseDresden 01069Germany College of Energy Soochow Institute for Energy and Materials Innovations Soochow UniversitySuzhou 215006China Key L

Human beings perceive the world through the senses of sight,hearing,smell,taste,touch,space,and *** first five senses are prerequisites for people to *** sensing organs upload information to the nervous systems,including the brain,for interpreting the surrounding ***,the brain sends commands to muscles reflexively to react to stimuli,including light,gas,chemicals,sound,and ***,as an emerging two-dimensional material,has been intensively adopted in the applications of various sensors and *** this review,we update the sensors to mimic five primary senses and actuators for stimulating muscles,which employ MXene-based film,membrane,and composite with other functional ***,a brief introduction is delivered for the structure,properties,and synthesis methods of ***,we feed the readers the recent reports on the MXene-derived image sensors as artificial retinas,gas sensors,chemical biosensors,acoustic devices,and tactile sensors for electronic ***,the actuators of MXene-based composite are ***,future opportunities are given to MXene research based on the requirements of artificial intelligence and humanoid robot,which may induce prospects in accompanying healthcare and biomedical engineering applications.

关键词： MXenes sensors actuators gas sensors biosensors tactile sensors sound sensors artificial retina

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Privacy Preservation for Cloud-Edge-Collaborative Energy Management system Using Post-Quantum Homomorphic Encryption

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IEEE Transactions on Smart Grid 2025年

作者： Jiang, Cheng Li, Xue Du, Dajun Qian, Hong Wen, Mi Wu, Lei Findeisen, Rolf Shanghai University of Electric Power Shanghai Key Laboratory of Power Station Automation Technology College of Automation Engineering Shanghai200090 China Shanghai University Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronical Engineering and Automation Shanghai200072 China Shanghai University of Electric Power College of Computer Science and Technology Shanghai201306 China Advanced Cryptography and System Security Key Laboratory of Sichuan Province Chengdu610225 China Stevens Institute of Technology Department of Electrical and Computer Engineering HobokenNJ07030 United States TU Darmstadt Control and Cyber-Physical Systems Laboratory Darmstadt64227 Germany

Cloud-based energy management systems (EMS) in smart grids face privacy challenges, as existing methods based on traditional homomorphic encryption support limited operations and are vulnerable to quantum attacks. We propose a privacy preservation method for smart grid energy management system, leveraging edge-assisted computing and ring learning with errors (RLWE) homomorphic encryption. Our approach enables both addition and multiplication operations on encrypted smart grid data while defending against quantum threats. We demonstrate the methods security under the RLWE hardness assumption and validate its effectiveness through an experimental platform simulating smart grid environments. This work addresses computational limitations in current privacy-preserving techniques, enhancing data security for evolving smart grid technologies © 2010-2012 IEEE.

关键词： power management (telecommunication)

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Online monitoring study for SF6 composition by optical cavity sensing technology in high-voltage GIS 1st

Online monitoring study for SF6 composition by optical cavit...

引用

1st International Conference on Optoelectronics and Measurement, ICOM 2018

作者： Zhang, Shiling Yao, Qiang Jiang, Meng State Grid Chongqing Electric Power Company Electric Power Research Institute Chongqing China Beijing Optical Fiber Sensing System Engineering Technology Research Center Beijing Institute of Aerospace Control Devices Beijing China

ISBN: (纸本)9789811385940

The schematic diagram of optical cavity design has been introduced in detail;meanwhile, the principle of measuring the gas concentration with optical resonator is also introduced. The pressure distribution and the velocity distribution of the optical cavity have been simulated by finite element method. Finally, the field performance of the optical cavity has been tested. Using the optical cavity spectroscopy technology, the gas component detection system is set up to realize high precision online monitoring of gas components such as CO, H2S and HF. The detection system uses narrow line-width semiconductor laser to select the characteristic gas spectrum and output the absorption peak wavelength. Three kinds of gas concentration are measured by time division multiplexing, and the online sampling device of closed loop gas is integrated to complete the monitoring platform of high precision. The paper has developed the SF6 composition monitoring device based on optical attenuation technology, which provides the new research method for the online monitoring of gas components such as CO, H2S and HF with the high accuracy of 3 ppm. © Springer Nature Singapore Pte Ltd 2020.

关键词： Sulfur hexafluoride

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A Fast-Dynamic Response control Strategy for power Supply Unit of SAR Satellites 3

A Fast-Dynamic Response Control Strategy for Power Supply Un...

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2020 3rd International Conference on Energy and power engineering, EPE 2020

作者： Zhang, Xiaofeng Li, Haijin Li, Jiannong Zang, Jie Gu, Yu Zhang, Donglai Power Electronic and Motion Control Research Center Harbin Institute of Technology Shenzhen Graduate School Shenzhen518055 China Beijing Institute of Spacecraft System Engineering Beijing100094 China

For the power supply of spacecraft, the dynamic response is a key requirement for converters. Especially for power supplies of SAR or other pulse power supplies, the transient of load is fast and the output current is high, it is very difficult to guarantee the output voltage in the required range. The ECSS-E_ST-20C has provided a standard for the power quality of power supply for spacecraft. In this paper, a fast-dynamic response control strategy for buck converters is proposed. The proposed strategy does not increase the output capacitance, and increases the dynamic response of the converter. In the proposed strategy, the linear control and non-linear control are combined. The linear control operates in the steady state, while the non-linear control operates in the transit state. Finally, the proposed strategy is verified by simulations and experiments. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Dynamic response

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Optimization of integrated energy system for combined cooling, heating and power supply of new energy based on energy storage 2

Optimization of integrated energy system for combined coolin...

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2021 2nd International Conference on Electrical Technology and Automatic control, ICETAC 2021

作者： Zhang, Tieyan Yang, Junbao Wang, Yaru Li, Min Zhang, Dawei Wang, Yuri Shenyang Ligong University China Shenyang Institute of Engineering China Key Laboratory of Regional Multi-energy System Integration and Control of Liaoning Province China Gd Hefeng Wind Power Development Co. Ltd. China Liaoning Shengfang Electric Power Technology Co. Ltd. China Benxi High-tech Industrial Development Zone Power Supply Branch State Grid Liaoning Electric Power Co. Ltd. China

With the development of science and technology, people also pay more and more attention to the development of new energy. Although there are also many studies on integrated energy systems now, integrated energy systems containing energy storage should also be further studied. This paper proposes an optimization of integrated energy system for combined cooling, heating and power supply of new energy based on energy storage, which analyzes the gas turbine, absorption refrigerating machine, electric refrigerator, photovoltaic power generation units, wind turbine and the work characteristics of the energy storage device. In this paper, an integrated energy system optimization model of new energy cogeneration with energy storage equipment is established. An example shows that the integrated energy system with energy storage can effectively solve the independent decoupling operation relationship among cool, heat and electricity. At the same time, the proposed model can also solve the energy interaction among cool, heat and electricity. In this way, the optimal operation of the integrated energy system can be realized. © 2021 institute of Physics Publishing. All rights reserved.

关键词： Electric energy storage

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