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检索条件"任意字段=3rd IEEE International Conference on Distributed Computing in Sensor Systems"

共 5117 条记录，以下是981-990 订阅

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Zoning Voltage Coordination Control Method for High Proportion distributed Photovoltaic Power in Distribution Network

Zoning Voltage Coordination Control Method for High Proporti...

引用

Energy Engineering and Power systems (EEPS), international conference on

作者： Bing Xue Yanfeng Ge Chuang Li Niankang Guo Chenglian Ma Dawei Huang State Grid Yingkou Power Supply Company State Grid Liaoning Electric Power Co. LTD Yingkou Liaoning China Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology Ministry of Education (Northeast Electric Power University) Jilin China

ISBN: (数字)9798350375138

ISBN: (纸本)9798350375145

The high penetration of distributed photovoltaic generation into distribution networks has become a major development trend in the future. However, the intermittency and random fluctuations of distributed photovoltaic output have exacerbated voltage violation and fluctuation issues in distribution networks. To address this problem, a distribution network zoning voltage coordination control strategy is proposed. In terms of zoning, voltage sensitivity index information obtained from daily power flow calculations is utilized to analyse and express the impact variation of photovoltaic generation on the voltage of each node. Based on the threshold requirements of voltage variation indices, the zoning of nodes is determined. In terms of zoning voltage coordination control, a strategy of voltage sensitivity control within the partition is adopted, pairing nodes within each partition and utilizing the active and reactive regulation capabilities of photovoltaic generation to control all over-limit voltage within normal range. Furthermore, through the interval distributed voltage coordination control strategy, the interval state variables are equivalenced, and based on the SADMM algorithm, the dynamic reactive power compensation amount between adjacent partitions is optimized to achieve the optimization and suppression of network-wide voltage fluctuations. Taking the ieee 33-node system as an example, a case study was conducted to verify the effectiveness and feasibility of the proposed strategy in practical applications.

关键词： Photovoltaic systems Reactive power Fluctuations Voltage fluctuations Sensitivity Distribution networks Regulation Indexes Voltage control Optimization

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Multi-obje Optimization Strategy for distributed Energy Resources in Distribution Networks Based on a Two-Stage Model

Multi-obje Optimization Strategy for Distributed Energy Reso...

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Robotics, Automation and Intelligent Control (ICRAIC), international conference on

作者： Zhichao Wang Xianbo Sun Yiluo Ke College of Intelligent Systems Science and Engineering Hubei Minzu University Enshi China

With the rapid development of new energy, a large number of distributed generation (DG) are connected to the distribution network. As the number of DGs connected to the grid increases, it will exacerbate voltage fluctuations and instability in the power grid, which will directly lead to network losses and increased operating costs. To effectively reduce the operational costs for the power supply company and optimize the network’s losses, a two- stage model-based day-ahead optimization scheduling approach has been proposed. The first stage is the optimization scheduling stage of DG, which determines the unit combination of DG based on market electricity prices, DG operating costs, and the price of signing interruptible load (IL) contracts, as well as the purchase of electricity from the large power grid and IL reduction. The second stage focuses on reactive power optimization. In this stage, considering the reactive power characteristics of DG, the outputs of DG units and reactive power compensation devices are jointly optimized to ensure DG outputs remain within specified ranges while reducing distribution network losses. Simulation results conducted on a modified ieee 33- node system demonstrate that the proposed two-stage day- ahead optimization scheduling model has reduced the network loss rate by 45%, further contributing to the reduction of operational costs for the power supply company.

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Composite Graphene/Cu Pressure sensor with One-Step Laser-Fabricated Microstructure: A One Stone Two Birds Strategy

Composite Graphene/Cu Pressure Sensor with One-Step Laser-Fa...

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international conference on Micro/Nano sensors for AI, Healthcare, and Robotics (NSENS)

作者： Yexi Jin Hao Shen Xingwen Zhou Liguo Chen Department of Mechanical and Electrical Engineering Soochow University China

ISBN: (数字)9798350375213

ISBN: (纸本)9798350375220

Flexible pressure sensors hold a significant position in the realm of wearable electronics. Despite strides made in recent years, crafting high-efficiency, high-performance sensors is an ongoing challenge. This study presents a one-step, cost-effective approach for concurrently fabricating the sensing and electrode layers. Herein, the sensing layer features a hybrid matrix comprising of laser-induced graphene (LIG) and laser-reduced copper nanoparticles. This synergy, with LIG’s innate porous conformation, bolsters compressibility for extensive detection ranges, alongside Cu microspheres enhancing conductive pathways under minimal pressure, endow the device with exceptional capabilities, achieving sensitivities of 60.2 kPa −1 across a span of 0 to 400 kPa. Through the monitoring of human physiological signals and movement, it has been demonstrated that this pressure sensor with a multistage composite microstructure can provide a promising candidate for the rapid development of the next generation of wearable bioelectronics.

关键词： Pressure sensors Nanoparticles Sensitivity Medical services Robot sensing systems Microstructure Biomedical monitoring

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Specular Endothelium Image Analysis with DEM Algorithm

Specular Endothelium Image Analysis with DEM Algorithm

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3rd ieee international conference on Emerging Smart computing and Informatics (ieee-ESCI)

作者： Chandra, Kamireddy Vijay Murari, Bhaskar Mohan Vellore Inst Technol Sch Elect Engn Dept Sensor & Biomed Technol Vellore Tamil Nadu India VNRVJIET Dept EIE Hyderabad India

ISBN: (纸本)9781728185194

specular microscope is used to get the sequence of images of different layers in Cornea and different structures so that the medical clinicians can extract the information that helps them to conclude the state of the patient's eye, the cornea, and about the abnormalities. A Hybrid model is used to preprocess the images of the Corneal Endothelium, detect the cells, and study the abnormalities by going through the data sets. so, three sets of normal corneal data sets are acquired by a specular microscope and 3 sets of abnormal specular Endothelium images associated with the disease to investigate will be investigated in the system. Processed in the proposed algorithm DEM (Dilation and Erosion morphology) where can be acquired the promising results are presented and the performance of the system is compared with a manual and two morphological approaches. DEM provides the clinical parameters of individual image and various statistical parameters are extracted and tabulated, different parameters are acquired and compared. The average difference between the manual and automatic cell densities are calculated using the DEM algorithm and the two morphological based approach is 5%,7%. And then it is deployed as a clinical tool to give the information to ophthalmologists about the cornea of the eye. The condition of the cornea is easily estimated and the processing time of the image is less than 1500 milliseconds.

关键词： Dilation and erosion morphology Endothelium layer corneal layer specular microscopy

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(POSTER) OVERTAKE: Opportunistic Routing and Concurrent Transmissions for TSCH 16

(POSTER) OVERTAKE: Opportunistic Routing and Concurrent Tran...

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16th Annual international conference on distributed computing in sensor systems (DCOSS)

作者： Harms, Oliver Landsiedel, Olaf Univ Kiel Kiel Germany Chalmers Univ Technol Gothenburg Sweden

ISBN: (数字)9781728143514

ISBN: (纸本)9781728143514

In this paper, we present OVERTAKE, an opportunistic routing protocol for Time-Slotted Channel Hopping (TSCH). OVERTAKE combines (1) opportunistic routing, (2) concurrent transmissions and (3) TSCH. We show that this novel combination enables low-latency, central scheduling withstanding node failures. Our initial results show its ability to withstand node failures of up to 40% of nodes of a flow while keeping minimal latency.

关键词： TSCH Opportunistic Routing Concurrent Transmissions Central Scheduling Wireless sensor-Actuator Networks (Industrial) Internet of Things

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distributed Decomposed Data Analytics of IoT, SAR and Social Network data 3

Distributed Decomposed Data Analytics of IoT, SAR and Social...

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3rd international conference on Communication systems, computing and IT Applications, CSCITA 2020

作者： Bharadi, Vinayak Ashok Tolye, Shashank Finolex Academy of Management and Technology IT Department Ratnagiri India

ISBN: (纸本)9781728123394

The weather nowadays has become so unpredictable that there is a need for a system that predicts correct weather patterns and allows them to take a precautionary plan of action to cope up with it. Three major sources of providing very crucial weather data are IoT sensors, SAR data and social media posts from a particular location. In this paper, we are proposing a system that takes IoT sensor data, SAR images and twitter feeds from a geographical location and creates a learning model that will provide a decision-making system for anomaly detection in order to minimize or nullify any casualties. A temperature, pressure and humidity dataset of BME 280 sensor is processed with K-NN Classifiers and the results are presented here. © 2020 ieee.

关键词： Graphics processing unit

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Research on Optimization of distributed Photovoltaic Grid Connection Scheme Based on New Power System

Research on Optimization of Distributed Photovoltaic Grid Co...

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Power Electronics, Computer Applications (ICPECA), ieee international conference on

作者： Jiang Zhuohan Xie Yudong Liu Shuncheng Peng Jian Ouyang Guang Liu Zuyuan State Grid Hunan Electric Power Company Limited Economic & Technical Research Institute Changsha China Hunan Key Laboratory of Energy Intemet Supply-Demand and Operation Changsha China Tiandi Dianyan (Beijing) Technology Co. Ltd Beijing China

This paper firstly evaluates the solar radiation, ambient temperature, wind speed and other factors in the photovoltaic power station site area, as well as the situation of substations suitable for access voltage levels around the site to determine the rationality of photovoltaic power station site selection. On this basis, a feasible access system scheme is proposed. Secondly, this paper conducts a technical analysis of the feasible access system scheme through electrical calculations such as power flow, short circuit, reactive power compensation and so on. Demonstrate whether the power flow distribution of the relevant substations is reasonable after the photovoltaic power station is connected to the power grid, whether the power grid is unstable, and the short-circuit current exceeds the standard. And give a reasonable reactive power compensation scheme. Finally, this paper proposes a reasonable and reliable relay protection configuration scheme, scheduling automation configuration scheme and communication design scheme for the access system scheme of this project. This ensures the safe and stable operation of the power grid. The experimental simulation shows that the photovoltaic grid-connected scheme proposed in this paper is economical and practical.

关键词： Photovoltaic systems Reactive power Substations Temperature Wind speed Power system stability Power system harmonics

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TCN-Log2Vec: A Comprehensive Log Anomaly Detection Framework based on Optimized Log Parsing and Temporal Convolutional Network

TCN-Log2Vec: A Comprehensive Log Anomaly Detection Framework...

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Consumer Electronics and Computer Engineering (ICCECE), 2021 ieee international conference on

作者： Zhe Jiang Yali Gao Jie Yuan Kaiguo Yuan Xiaoyong Li Key Laboratory of Trustworthy Distributed Computing and Service (BUPT) Ministry of Education College of Cyberspace Security Beijing University of Posts and Telecommunications Beijing China

Logs that record execution information and system status, are useful for anomaly detection. Traditionally, developers manually checked logs through keyword search or rule matching. However, as the number of logs increases, this approach becomes unrealistic. More and more methods of log anomaly detection based on machine learning and deep learning have been proposed. In order to detect log anomalies accurately and effectively, this paper proposes a comprehensive framework, namely TCN-Log2Vec. Based on Drain, a prevalent and effective method to extract the log templates from the original logs, TCN-Log2Vec has done some optimization work in log parsing. It also captures sequence information, quantitative information, and semantic information from the original log. Meanwhile, it designs the anomaly detection module based on TCN (Temporal Convolutional Network) to achieve parallel processing. Our log parsing method achieves 99% accuracy on HDFS datasets and 94% accuracy on BGL datasets. We compare our anomaly detection framework with other advanced methods including DeepLog, LogAnomaly, and LogRobust, the experiment results show that our model has better performance.

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Data Cooperatives for Neighborhood Watch 3

Data Cooperatives for Neighborhood Watch

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3rd ieee international conference on Blockchain and Cryptocurrency (ieee ICBC)

作者： Salau, Abiola Dantu, Ram Upadhyay, Kritagya Univ North Texas Dept Comp Sci & Engn Denton TX 76207 USA

ISBN: (纸本)9781665435789

The increasing proliferation of user data is moving the world from the era of 'big data' to a new era of shared data, and some are considering data as a factor of production that is paving the way for a new business economy. In this paper, we propose a solution that uses blockchain technology as a platform for online neighborhood watch using a form of data cooperative among individuals or organizations in the sharing of data through a peer-to-peer mechanism. We prove the concept by implementing a distributed phishing data sharing system that will maintain a community ledger of reported phishing activities with a consensus-based approval of the phishing transaction and a novel reputation scoring system thereby adding reliability to the system and effectively tackling the phishing problem. The data cooperative provides a way for timely multi-party sharing of phishing data among anti-phishing organizations and users of the internet eliminating the current approach of each organization maintaining its database. Our results show that blockchain is effective in complementing the existing methods of phishing detection and serves as a platform for sharing phishing data with respect to scalability, cost, and memory consumption. Also, our results further show that transaction times on the Ropsten test net follow a Gamma distribution. Our approach can be extrapolated to other data sharing systems like medical data, spam calls, discussion forums, etc.

关键词： Cybersecurity blockchain phishing distributed ledger data cooperative smart contract data sharing peer-to-peer

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How to Request Network Resources Just-in-Time using Smart Contracts 3

How to Request Network Resources Just-in-Time using Smart Co...

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3rd ieee international conference on Blockchain and Cryptocurrency (ieee ICBC)

作者： Faisal, Tooba Maesa, Damiano Di Francesco Sastry, Nishanth Mangiante, Simone Kings Coll London London England Univ Cambridge Cambridge England Univ Surrey Guildford Surrey England Vodafone Grp R&D Newbury Berks England

ISBN: (纸本)9781665435789

5G promises unprecedented levels of network connectivity to handle diverse applications, including life-critical applications such as remote surgery. However, to enable the adoption of such applications, it is important that customers trust the service quality provided. This can only be achieved through transparent Service Level Agreements (SLAs). Current resource provisioning systems are too general to handle such variety in applications. Moreover, service agreements are often opaque to customers, which can be an obstacle for 5G adoption for mission-critical services. In this work, we advocate short-term and specialised rather than long-term general service contracts and propose an end-to-end Permissioned distributed Ledger (PDL) focused architecture;which allows operators to advertise their service contracts on a public portal backed by a PDL. These service contracts with clear Service Level Agreement (SLA) offers are deployed as smart contracts to enable transparent, automatic and immutable SLAs. To justify our choice of using a permissioned ledger instead of permissionless, we evaluated and compared contract execution times on both permissioned (i.e. Quorum and Hyperledger Fabric) and permissionless (i.e. Ropsten testnet) ledgers.

关键词： distributed Ledger Technology Smart Contract Blockchain 5G Network Services

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