检索结果-内蒙古大学图书馆

Engineering Intelligent Systems 2024年第4期32卷 319-328页

作者： Su, Yang Cao, Yang Tao, Wenwei Zhang, Wenzhe Power Dispatching and Control Center China Southern Power Grid Guangdong Guangzhou510000 China School of Computer Science and Engineering South China University of Technology Guangdong Guangzhou510000 China

Network slicing, an important feature of 5G (Fifth Generation of Mobile Communications technology), is widely used in various business scenarios, and it has become increasingly important to address the accompanying security isolation problem. Different network slicing needs to handle different types of data traffic, and there are strict requirements for the security guarantee of each network slicing. In this paper, a 5G network slice security isolation algorithm based on particle swarm optimization, is proposed. This study analyzed the security requirements of different vertical industries for network slicing, including resource isolation and communication privacy protection, and designed a resource allocation model suitable for 5G network slicing, taking into account the security isolation requirements and resource competition relationships of different slicing. Finally, based on the communication strategy optimization method using particle swarm optimization, a 5G network slice test was carried out on a front-line intelligent city system to ensure the communication privacy and security between slices. The experimental results showed that the average bandwidth utilization rate of the 5G network slice security isolation algorithm based on particle swarm optimization was 85%;the effect benefit ratio was 90%, and the average delay was 20 milliseconds. The average bandwidth utilization without optimization scheme was 70%;the cost-effectiveness ratio was 69%, and the average delay was 36 milliseconds. These results showed that particle swarm optimization provided 5G network slice security isolation algorithm with better security performance, faster response speed, lower resource consumption, and stronger robustness and resilience. This algorithm can effectively improve the security and performance of a 5G network slice, and provide users with more reliable services. © 2024 CRL Publishing Ltd.

关键词： Bandwidth

来源：评论

学校读者我要写书评

暂无评论

Phase-Locked Stability Evaluation Method for Combined Renewable power Generation and Thermal Units Transmission System 16

Phase-Locked Stability Evaluation Method for Combined Renewa...

引用

16th IEEE PES Asia-Pacific power and Energy Engineering Conference, APPEEC 2024

作者： Wang, Yanwei Lu, Shuhan Sun, Haishun Wang, Xinwei Chen, Jinchang Yang, Zhennan Liu, Yuming Power Dispatching Control Center Guangdong Power Grid Co. Ltd Guangzhou China Southern Power Grid Guangzhou China School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China Electric Power Research Institute China Southern Power Grid Guangzhou China

ISBN: (纸本)9798350386127

In the transmission system of combined renewable power generation and thermal units, there exists risk of the phase-locked instability when the renewable power generation output is high. To deal with this problem, this paper firstly establishes the mathematical expression of the PLL phase angle motion equation to analyze the mechanism for phase-locked instability. Based on this, the method of renewable power phase-locked stability evaluation is proposed. The output combination of synchronous machine and renewable power, under the constraint of renewable power phase-locked stability, can be calculated accurately according to the method. Case study validates the effectiveness of analysis results and computation performance of the proposed method. © 2024 IEEE.

关键词： Locks (fasteners)

来源：评论

学校读者我要写书评

暂无评论

Research on the Renewable power Phase-Locked Stability Considering the Influence of Reactive power Compensation Device 16

Research on the Renewable Power Phase-Locked Stability Consi...

引用

16th IEEE PES Asia-Pacific power and Energy Engineering Conference, APPEEC 2024

作者： Chen, Jinchang Lu, Shuhan Sun, Haishun Wang, Xinwei Wang, Yanwei Fu, Chao Liu, Yuming Power Dispatching Control Center of Guangdong Power Grid Co. Ltd Guangzhou China Southern Power Grid Guangzhou China School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China Electric Power Research Institute Southern Power Grid Guangzhou China

ISBN: (纸本)9798350386127

As the large-scale integration of the off-shore wind generation, the grid strength of the wind-thermal-bundled transmission system has become much more weaker and phase-locked instability problems are becoming more easily to encounter. As the phase-locked stability is mainly affected by the terminal voltage dynamic of the renewable generation, the reactive power compensation device which influence the terminal voltage dynamic will play a great role in phase-locked stability. However, the phase-locked stability interactions between the reactive power compensator and renewable generation are still not well researched. In this paper, PLL phase angle motion characteristic considering the influence of reactive power compensation device has been proposed and the influence of reactive power compensation device has been analyzied. Then, the calculation method of reactive power compensation device capacity is proposed, which can accurately calculate the capacity of reactive power compensation device under the constraint of phase-locked stability. At last, case studies have been carried out to verify the correctness and effectiveness. © 2024 IEEE.

关键词： Windmill

来源：评论

学校读者我要写书评

暂无评论

Carbon Accounting for Electricity Use of End Users: A Critical Review 3rd

Carbon Accounting for Electricity Use of End Users: A Critic...

引用

3rd International Conference on Environmental Pollution and Governance, ICEPG 2023

作者： Wang, Jingliang Luo, Lijian Xu, Zhe Hu, Ke Yang, Qing Wang, Qingrui Wang, Luyao Xu, Zishuo Wu, Yelong Ling, Chen Guangzhou Power Exchange Center China Southern Power Grid Guangdong Guangzhou510000 China Southern Power Grid Carbon Asset Management Co Ltd China Southern Power Grid Guangzhou Guangdong510000 China School of Energy and Power Engineering Huazhong University of Science and Technology Hubei Wuhan430000 China China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology Hubei Wuhan430000 China

ISBN: (纸本)9783031529009

In the current global context of escalating concerns about anthropogenic climate change, electricity consumers on the production side have integrated carbon emissions accounting into their operational and sustainable development strategies. In a collective endeavor to mitigate the adverse effects of climate change, both corporate entities and government institutions are actively engaged in efforts to quantify, monitor, and ultimately diminish the carbon footprint linked to their electricity usage. This process necessitates rigorous methodologies and calculations, enabling users to comprehensively assess the carbon emissions linked to their electricity consumption and align their practices with environmental conservation and sustainable development objectives. The behavior of corporate electricity consumption is shaped by a multitude of factors, including policies within the electricity market, the carbon market, renewable energy initiatives, and green certificate trading, among others. Therefore, researching the future development patterns and directions of the electricity market and carbon market holds significance for entities, including businesses, in adjusting their electricity consumption behaviors. This study utilizes a bibliometric approach to perform an extensive review of the present research pertaining to the electricity market and the carbon market. Utilizing the VOS viewer, a bibliometric software, a network analysis of literature is undertaken to pinpoint key research focal points. The analysis also delves into citation patterns and explores research institutions. The ultimate goal is to extrapolate future trends within the electricity market, green energy, and the carbon market using bibliometric insights. This study seeks to understand how these factors collectively impact end-user electricity consumption behaviors. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Sustainable development

来源：评论

学校读者我要写书评

暂无评论

Privacy-Preserving Frank-Wolfe on Shuffle Model

引用

Acta Mathematicae Applicatae Sinica 2024年第4期40卷 887-907页

作者： Ling-jie ZHANG Shi-song WU Hai ZHANG School of Mathematics Northwest UniversityXi’an 710127China School of Mathematics and Information Science Baoji University of Arts and SciencesBaoji 721013China China Southern Power Grid Artificial Intelligence Technology Company Limited Guangzhou 510700China

In this paper,we design the differentially private variants of the classical Frank-Wolfe algorithm with shuffle model in the optimization of machine *** weak assumptions and the generalized linear loss(GLL)structure,we propose a noisy Frank-Wolfe with shuffle model algorithm(NoisyFWS)and a noisy variance-reduced Frank-Wolfe with the shuffle model algorithm(NoisyVRFWS)by adding calibrated laplace noise under shuffling scheme in thel_(p)(p∈[1,2])-case,and study their privacy as well as utility guarantees for the H?lder smoothness *** particular,the privacy guarantees are mainly achieved by using advanced composition and privacy amplification by *** utility bounds of the Noisy FWS and NoisyVRFWS are analyzed and obtained the optimal excess population risksO(n-(1+α/4α+log(d)√log(1/δ)/n∈and O(n-1+α/4α+log(d)√log1(+δ)/n^(2)∈with gradient complexity O(n(1+α)^(2)/4α^(2)forα∈[1/√3,1].It turns out that the risk rates under shuffling scheme are a nearly-dimension independent rate,which is consistent with the previous work in some *** addition,there is a vital tradeoff between(α,L)-Holder smoothness GLL and the gradient *** linear gradient complexity O(n)is showed by the parameterα=1.

关键词： differential privacy Frank-Wolfe algorithm privacy amplification shuffle model

来源：评论

学校读者我要写书评

暂无评论

Laser annealing optimization of hydrothermally grown VO2 infrared detectors for applications in intelligent manufacturing

Laser annealing optimization of hydrothermally grown VO2 inf...

引用

2024 International Conference on Automation Control, Algorithm, and Intelligent Bionics, ACAIB 2024

作者： Lin, Li Zhang, Yajie Sun, Weiqi Wang, Zhiming Zhang, Weixun Wei, Jie Zhang, Chunxiao Zhou, Yanhong China Southern Power Grid AI Technology Co. Ltd Guangzhou510663 China School of Material Science and Engineering Hunan University Changsha410082 China Digital Grid Research Institute China Southern Power Grid Guangdong Provincial key Laboratory of Digital Grid Technology Guangzhou510663 China

ISBN: (纸本)9781510682597

With the continuous advancement of technology, infrared detection technology has become increasingly important in various fields, and the demand for high-performance infrared detectors has also grown. VO2 thin films have attracted much attention due to their significant changes in resistance and transmittance during phase transitions, especially their high sensitivity to infrared light irradiation at room temperature. In this study, vanadium dioxide (VO2) thin films were successfully grown on single-crystal sapphire (Al2O3) substrates using the hydrothermal method, and the optoelectronic performance of the films was optimized by laser annealing technology. Experimental results show that by adjusting the power of the laser annealing, VO2 thin films with a good response to 1064 nm infrared light can be obtained. Under a light intensity of 20 %, the photocurrent of the film can reach 61.4 μA, which is an increase of 36.4 μA compared to before annealing. The film also exhibits periodic current changes under periodic infrared light irradiation, demonstrating its structural stability and optoelectronic cycling performance. Under the same infrared light irradiation, a larger photocurrent can be generated. This study provides a more cost-effective and sensitive approach for intelligent manufacturing fields such as night-time intelligent driving and the application of intelligent infrared focal plane. © 2024 SPIE.

关键词： Sapphire

来源：评论

学校读者我要写书评

暂无评论

An improved state-of-charge estimation method for sodium-ion battery based on combined correction of voltage and internal resistance

引用

iEnergy 2024年第3期3卷 128-134页

作者： Yongqi Li Cheng Chen Youwei Wen Qikai Lei Kaixuan Zhang Yifei Chen Rui Xiong Energy Storage Research Institute China Southern Power Grid Power Generation Co.LtdGuangzhou 510663China School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Fire Science College of Resources and Environ-mentUniversity of Science and Technology of ChinaHefei 230026China

ABSTRACT The accurate state-of-charge(SOC)estimation of sodium-ion batteries is the basis for their efficient *** this paper,a new SOC estimation method suitable for sodium-ion batteries and their application conditions is proposed,which considers the combination of open circuit voltage(OCV)and internal resistance ***,the optimal order of equivalent circuit model is analyzed and selected,and the monotonic and stable mapping relationships between OCV and SOC,as well as between ohmic internal resistance and SOC are ***,a joint estimation algorithm for battery model parameters and SOC is estab-lished,and a joint SOC correction strategy based on OCV and ohmic internal resistance is *** test results show that OCV correction is reliable when polarization is small,that the ohmic internal resistance correction is reliable when the current fluctuation is large,and that the maximum absolute error of SOC estimation of the proposed method is not more than 2.6%.

关键词： Sodium-ion battery equivalent circuit model parameter identification state of charge joint estimation

来源：评论

学校读者我要写书评

暂无评论

Coordinated Optimization of Multi-energy Generation Systems Considering the Health Damages of Coal-fired Pollutant Dispersion

引用

CSEE Journal of power and Energy Systems 2022年第6期8卷 1613-1622页

作者： Suhua Lou Yinhao Yang Yanjie Liang Yaowu Wu State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China Power Dispatch and Control Center of China Southern Power Grid Guangzhou 510623China

Pollutants emitted from coal-fired power plants lead to the deterioration of air quality in developing countries,and contribute to both mortality and *** improve air quality from power generation,new dispatch strategies incorporated with air pollution dispersion models should be *** paper takes into account the impact of meteorological variations on spatio-temporal dispersion of *** on the coal-fired pollutant concentration estimated by the Gaussian plume dispersion model,exposure-response functions are used to quantify the resulting health ***,the corresponding economic costs of health damages are incorporated to penalize the power *** generation costs and economic costs of health damages,this paper formulates a twostage stochastic optimization model of a multi-energy generation system including coal units,gas units,and photovoltaic ***,numerical studies based on a modified IEEE 14-node system are performed for illustration and validation.

关键词： Coal-fired pollutant dispersion exposure-response functions Gaussian plume model meteorological variations multi-energy generation system

来源：评论

学校读者我要写书评

暂无评论

Analysis of the correlation between GIS partial discharge current waveform and charge quantity with UHF signals 2

Analysis of the correlation between GIS partial discharge cu...

引用

2023 2nd International Conference on Renewable Energy and Electrical technology, ICREET 2023

作者： Qian, Hanming Zeng, Xiangjun Zhou, Ke Zhang, Wei School of Electrical & Information Engineering Changsha University of Science & Technology Changsha China Electric Power Research Institute of Guangxi Power Grid Co. China Southern Power Grid Company Limited Nanning China

The Ultra-High Frequency (UHF) method, as a crucial technology for online GIS monitoring, struggles with the issue of being unable to accurately reflect the number of partial discharges, which poses a significant challenge for this technique. To examine the relationship between partial discharge waveforms, charge quantity, and UHF signals, a physical field model of partial discharge is developed using finite element simulation software, allowing a comparison of the peak-to-peak values of UHF signals with the parameters of the partial discharge current. Research demonstrates a roughly linear relationship between the peak-to-peak values of UHF signals and the magnitude of the partial discharge current but no definitive connection with the discharge quantity. These significant findings guide the quantitative detection of partial discharges in electrical equipment using the UHF method. © Published under licence by IOP Publishing Ltd.

关键词： Partial discharges

来源：评论

学校读者我要写书评

暂无评论

A lightning location method based on POTDR in Optical fiber transmission

A lightning location method based on POTDR in Optical fiber ...

引用

2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and Optical Communications, IPOC 2024

作者： Feng, Xiaofang Su, Xingrui Wu, Guilong Wu, Bin Chen, Yitong Liu, Lin Li, Wei Hu, Kaijing Hu, Yujia China Southern Power Grid Company Guangzhou China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan China

In this paper, a lightning location method based on polarization optical time-domain reflectometer is proposed. Through simulated lightning strike experiment, the positioning accuracy can reach 5m within the fiber len... 详细信息

ISBN: (纸本)9798350379266

关键词： Birefringence

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：