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检索条件"机构=State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology"

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Research and Implementation of Rapid Construction of Digital Twins in Distribution Network Based on Data Driven

Research and Implementation of Rapid Construction of Digital...

引用

International Conference on Artificial Intelligence and Communication Technologies, ICAICT 2023

作者： Qiao, Junfeng Peng, Lin Zhou, Aihua Pan, Sen Yang, Pei Ou, Zhujian Mao, Yanfang State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology State Grid Smart Grid Research Institute Co. LTD. Jiangsu Nanjing210003 China Nantong Power Supply Company State Grid Jiangsu Electric Power Supply Co. LTD. Jiangsu Nanjing210014 China

ISBN: (纸本)9789819969555

The production and operation of distribution network in China involves cross link and cross specialty efficient collaboration. The data types of each business link of distribution network are complex and diverse, and the presentation forms are different. The attributes of each distribution equipment node are heterogeneous, and the interaction between each equipment is very frequent. In the continuous development of the new active distribution network, the value of data expression and data mining is further increased, and more and more data resources are integrated in various business systems and platforms of the distribution network. The accelerated formation of the new distribution network intensifies this evolution trend. The degree of sharing and value realization of data resources determines the height of business development and management improvement of the distribution network. The internal structure of the distribution network is complex, and there are many kinds of power equipment involved, so there are huge difficulties in data monitoring. The existing state monitoring methods have very high error rate in practical application, and the response time is long, which can not meet the actual needs. This paper proposes a rapid construction method of digital twins of distribution network based on data drive, which provides a reference for the operation state monitoring of power equipment. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Electric power distribution

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Research and Implementation of Rules Extraction technology for Digital Twin Objects in Distribution Network Based on Semantic Understanding 2nd

Research and Implementation of Rules Extraction Technology f...

引用

2nd World Conference on Intelligent and 3D Technologies, WCI3DT 2023

作者： Qiao, Junfeng Peng, Lin Zhou, Aihua Pan, Sen Yang, Pei Ou, Zhujian Yao, Jianguang State Grid Laboratory of Power Cyber-Security Protection & Monitoring Technology State Grid Smart Grid Research Institute Co. LTD. Jiangsu Nanjing210003 China Nantong Power Supply Company State Grid Jiangsu Electric Power Supply Co. LTD Jiangsu Nanjing210014 China

ISBN: (纸本)9789819970100

The digital twin of electric topology grid refers to the digital twin of topology grid, mapping the real world topology grid into a virtual digital space, and then fully reflecting the dynamic changes of entities and their relationships in the whole life cycle time scale through full coverage of high-density dynamic data, so as to achieve intelligent analysis, dynamic decision-making and mutual inductance cooperation based on the full model data of digital twin. The digital topology grid can affect the twin interaction of real reality and digital reality by constructing the closed loop data flow of the electric topology grid. The digitization electric network constructed by it relies on the efficient real-time data flow to realize the situation awareness, virtual deduction, and operation management regulation of the electric grid. Digital twin grid is an inevitable stage for the transformation of fresh forms of electric energy, for example, the smart electric grid, energy Internet of Things, active topology grid, etc., in recent years, and is also an effective test method for new digital infrastructure tasks of electric power from 2020. From the perspective of topology grid digital twin object rules, this paper uses a semantic understanding method to extract topology grid digital object rules, to meet the needs of topology grid digital technology, and promote the business appliance of topology grid digital technology. © 2024, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Topology

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Research on a digital twin dynamic polymerization technology 7

Research on a digital twin dynamic polymerization technology

引用

7th International Conference on Mechatronics and Intelligent Robotics, ICMIR 2023

作者： He, Zhimin Peng, Lin Yu, Hai Wang, He State Grid Smart Grid Research Institute Co. LTD Nanjing Jiangsu210003 China State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology Nanjing Jiangsu210003 China

ISBN: (数字)9781510668089

ISBN: (纸本)9781510668072

In this paper, a kind of digital twin dynamic polymerization technology based on clustering and intelligent analysis is studied. In the first step, the goal and business requirements of device-level digital twin polymerization are studied, and the principle of hierarchical and distributed dynamic polymerization of device-level digital twin is proposed. The second step analyzes the dynamic characteristics of the county energy Internet source network charge and storage, and studies the spatio-Temporal dynamic aggregation modeling technology of the device-level digital twin based on the dynamic characteristics of the source network charge and storage. The third step is to study the hierarchical polymerization framework and polymerization method of the virtual power plant at the source, load and storage side facing the distributed multi-level interaction framework of the county energy Internet, the hierarchical polymerization framework and polymerization method of the county energy Internet side, and the hierarchical polymerization framework and polymerization method of the virtual power plant at the source, load and storage side facing the county network side. © 2023 SPIE. All rights reserved.

关键词： Polymerization

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Research on Virtual and Real Spatial Data Interconnection Mapping technology for Digital Twin 4th

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4th International Conference on 3D Imaging Technologies- Multidimensional Signal Processing and Deep Learning, 3D IT-MSP and DL 2022

作者： He, Zhimin Peng, Lin Yu, Hai Wang, He State Grid Smart Grid Research Institute Co. LTD Jiangsu Nanjing210003 China State Grid Laboratory of Power cyber-Security Protection and Monitoring Technology NanjingJiangsu210003 China

ISBN: (纸本)9789819912292

In recent years, distributed photovoltaics, decentralized wind power, new loads, electric vehicles, etc. have been connected to the power grid in a wide range, and the distribution network has become more active, with strong fluctuations, and large peak-to-valley differences. The management and coordination of distributed resources interaction put forward higher requirements. This paper conducts research on the data interconnection and mapping technology of virtual and real space for digital twins. The first step is to study the modeling and driving technology of data interconnection, fusion mechanism model, and information model based on the real twin of the power grid. Coordinate data and monitoring data of main and auxiliary equipment and the data interconnection mechanism of the power grid real scene twin, build a dual-mode driving method that integrates the mechanism model and data model;the second step is to study the power grid "virtual-real" space multi-service continuous mapping mechanism and real-time data. The panoramic mapping method realizes the continuous and real-time mapping of point data and surface data to the digital twin and realizes multi-block, multi-level, and multi-type mapping according to the steps of feature extraction, feature matching, model parameter estimation, transformation, and interpolation. The digital twin data is accurately matched;the third step is to study the efficient transmission and update integration technology of twin data in the power grid environment, research methods to improve the real-time and concurrency of data transmission, and research multi-source heterogeneous data dynamic update and integration technology. The fourth step is to study the two-way intelligent cooperation and integration technology of station equipment, realize real-time data interaction and state interaction between the virtual digital model and the real physical model, and realize the interconnection and mapping between the station panoramic m

关键词： Mapping

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Multi-source System Log Behavior Pattern Mining Method Based on FP-Growth

Multi-source System Log Behavior Pattern Mining Method Based...

引用

2023 International Conference on Communication Network and Machine Learning, CNML 2023

作者： Zhang, Daojuan Wu, Tianqi Zhou, Xiaoming Hu, Bo Zhang, Wenjie State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology State Grid Smart Grid Research Institute Co. Ltd Beijing China State Grid Liaoning Electric Power Supply Co. Ltd. Shenyang China

ISBN: (纸本)9798400716683

By analyzing and mining system logs, it is possible to effectively discover behavioral characteristics and anomalies of network users or systems. Through association analysis, patterns and correlations between different log sources can be identified, thereby enabling the detection of various intrusion behaviors in computer networks. To address the challenge of handling massive and complex log data, this paper proposes a multi-source system log behavior pattern mining method based on FP-Growth. This method efficiently extracts frequent patterns and abnormal behaviors from large-scale system logs. Firstly, to ensure data quality and facilitate subsequent data mining processes, we perform necessary structuring and cleansing of raw logs and transform them into a format suitable for data analysis. Subsequently, given the variations in structure and content across different types of logs, we conduct distinct feature extraction for each type of log to retain essential information and generate transaction items. The data is then organized into datasets based on temporal partitions, forming a transaction database as input for the association rule mining algorithm. Finally, utilizing the FP-Growth association rule mining algorithm, this paper explores the relationships between entries from various types of single and multi-source logs. Based on metrics such as support, appropriate association rules are selected for behavior pattern mining. Experimental results demonstrate that the proposed method effectively uncovers typical behavior patterns. © 2023 ACM.

关键词： Association rules

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Research and Application of Distribution Network Digital Twin Spatial Layout technology

Research and Application of Distribution Network Digital Twi...

引用

International Conference on Artificial Intelligence and Communication Technologies, ICAICT 2023

作者： Wang, Gang Peng, Lin Mao, Yanfang Zhou, Aihua Xu, Min Wang, He Ou, Zhujian Yao, Jianguang State Grid Smart Grid Research Institute CO. LTD. Nanjing210003 China State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology Nanjing210003 China Nantong Power Supply Company State Grid Jiangsu Electric Power Co. Ltd. Jiangsu Nantong226006 China

ISBN: (纸本)9789819969555

This paper studies the layout of the electrical topological relationship of the digital twin space. Based on the geographical resource map and the electrical topological map, the distribution network topological nodes are extracted using the single-line diagram and the ring network diagram tree structure. According to the hierarchical mark of the equipment, the single-line diagram and the ring network diagram structure, combined with the point cloud model, the distribution network digital twin space is rapidly constructed using the automatic generation algorithm of the distribution network three-dimensional model diagram. In this paper, based on the point cloud model, we carry out the research on the three-dimensional correction technology of distribution network equipment, build the point cloud recognition model library of fixed equipment, automatically identify and correct the outdoor overhead line tower, station building and other equipment through the point cloud model, identify the contents of the objects in the station building and underground cable line according to the prior knowledge, and correct the three-dimensional model position based on the three-dimensional model and the point cloud model. This paper develops the spatial layout component of the distribution network digital twins that integrates geographic, physical, management and business information, and realizes the spatial layout and rapid reconstruction of the distribution network digital twins based on electrical topology. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Trees (mathematics)

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NFA Regular Expression Matching based Electriuec power Sensitive Data Recognition Algorithm Design and Simulation

NFA Regular Expression Matching based Electriuec Power Sensi...

引用

2023 International Conference on Communication Network and Machine Learning, CNML 2023

作者： Yao, Qigui Zhang, Xiaojian Fei, Jiaxuan Ji, Wen Guo, Caiwei State Grid Smart Research Institute CO.LTD Nanjing China State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology Nanjing China State Grid Fujian Electric Power CO.LTD Fujian China

ISBN: (纸本)9798400716683

In the era of big data, electric power sensitive data recognition and network intrusion detection are concerned. Accurate pattern matching based sensitive data recognition software has low matching efficiency, poor flexibility and high resource consumption. However, regular expression matching is widely used because of its strong semantic expression ability and high flexibility. Aiming at the problems such as the small number and simple form of regular expressions supported by traditional NFA algorithm, this paper proposes an improved NFA regular expression matching algorithm for sensitive data recognition based on the iterative combination of metacharacter preprocessing, completes the regular expression matching algorithm and FPGA hardware logic circuits design. The simulation results based on Vivado platform show this algorithm can achieve efficient and fast matching of regular expressions with strong flexibility and less resource consumption. © 2023 ACM.

关键词： Field programmable gate arrays (FPGA)

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Panoramic mapping and interaction technology between real-world images and power grid real-world twins

Panoramic mapping and interaction technology between real-wo...

引用

2024 International Conference on Electronics, Electrical and Information Engineering, ICEEIE 2024

作者： Wang, Dong Xu, Min Su, Lingdong Xiao, Xuequan Zhen, Chenghao Zhou, Aihua State Grid Jiangsu Electric Power Co. Ltd. Xuzhou Power Supply Branch Jiangsu Xuzhou221000 China State Grid Smart Grid Research Institute Co. Ltd. Jiangsu Nanjing210003 China State Grid Laboratory of Power cyber-Security Protection and Monitoring Technology Nanjing210003 China

ISBN: (数字)9781510686809

ISBN: (纸本)9781510686793

This article proposes a panoramic mapping and interaction method for real-world images and power grid real-world twins. The data of the power grid scene is obtained through high-precision data acquisition technology, and accurate positioning is carried out. Secondly, the collected point cloud data is optimized and processed to construct a power grid real-world twin model, and texture mapping is performed. The panoramic mapping algorithm is used to map the power grid real-world twin model to the real-world image. Real time object detection and tracking, attitude estimation, and visual feedback and effect presentation are performed. The YOLO object detection algorithm and Kalman filter technology are used to achieve target detection, tracking, and state estimation. Finally, the Extended Kalman Filter (EKF) algorithm is used to reflect the changes in the real power grid, and it is inputted as an observation value. In EKF, through the prediction and update steps of EKF, Integrate the state of the model and sensor observations to perform incremental updates on the dynamic model. © 2024 SPIE.

关键词： Extended Kalman filters

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grid Engineering Point Cloud Device Clustering Segmentation and Three-Dimensional Shape Retrieval technology for grid Digital Handover Method 5th

Grid Engineering Point Cloud Device Clustering Segmentation ...

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5th International Conference on 3D Imaging Technologies—Multidimensional Signal Processing and Deep Learning, 3DIT-MSP and DL 2023

作者： Wang, Gang Wang, He Wang, Fei Yu, Hai Fan, Zikai State Grid Smart Grid Research Institute CO. LTD Nanjing210003 China State Grid Laboratory of Power Cyber-Security Protection and Monitoring Technology Nanjing210003 China State Grid Jiangsu Electric Power Co. Ltd. Economic and Technological Research Institute Nanjing210009 China

ISBN: (纸本)9789819751808

The power grid infrastructure design model requires the transfer of digital design data to the power grid operation and maintenance, but the current digital transfer lacks intelligent components such as serial transfer data and automatic feedback correction for specific application scenarios. There are problems in the clustering and segmentation of single devices in the power grid engineering point cloud, as well as the three-dimensional shape description and retrieval of power grid devices. This paper studies the technology of point cloud target extraction and verification. Based on the characteristics of the 3D handover model, point cloud data is preprocessed using a direct pass filter. Point cloud filtering methods based on terrain filtering and 3D model filtering are used to achieve point cloud ground processing. An improved region growth method based on the boundary eigenvalue of the 3D handover model is used to segment the point cloud model, and a deep neural network is introduced, research on 3D key point extraction methods and feature descriptors for point clouds suitable for complex power equipment to improve the accuracy of apparent 3D shape matching and retrieval of power grid equipment. Through the research methods in this article, it is easier to segment and extract individual points from point clouds and achieve automatic association mapping of main equipment extraction and equipment point clouds with corresponding models in the model library. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： power grids

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Risk Assessment of Distributed PV Microgrids Under cyber Attacks based on CNN-AE 8

Risk Assessment of Distributed PV Microgrids Under Cyber Att...

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8th International Conference on Smart grid and Smart Cities, ICSGSC 2024

作者： Qiu, Shenjian Guo, Shiang Shao, Zhipeng Fei, Jiaxuan Liu, Quan Pan, Kaikai State Grid Laboratory of Power cyber-Security Protection and Monitoring Technology State Grid Smart Grid Research Institute Co. LTD. Nanjing China Zhejiang University School of Electrical Engineering Hangzhou China State Grid Jiangsu Electric Power Co. Ltd. Yangzhou Power Supply Branch Yangzhou China

ISBN: (纸本)9798350377408

The widespread application of smart grid technology and numerous Internet of Things (IoT) devices expose microgrid vulnerability to various cyber attacks. Moreover, the complex interactions and implicit risk propagation within the system pose challenges in accessing the risk from cyber attacks. To this end, we propose a risk assessment method for distributed PV microgrids under cyber attacks. This program employs an autoencoder (AE) architecture where convolutional neural networks (CNN) serve as the intermediate layer to extract the local features of data exchange from adjacent nodes. The AE conducts unsupervised learning using power data under normal operating conditions, thus performing risk assessment by evaluating the reconstruction errors. To validate the proposed method, we conducted training on the algorithm using historical data and the topology of a real scenario of a distributed photovoltaic microgrid and tested the risk assessment with various fake data injection attacks (FDIA) and Denial of Service (DoS) attacks. © 2024 IEEE.

关键词： cyber attacks

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