检索结果-内蒙古大学图书馆

2020 5th International Seminar on Computer technology, Mechanical and Electrical Engineering, ISCME 2020

作者： Wang, Yao Yun, Liang Sun, Xiaoyan Global Energy Interconnection Research Institute Co. Ltd. Elec. Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Nanjing China

With the continuous extension of Smart grid from the grid side to the user side, the expansion of emerging business is deepening day by day. In terms of terminal access quantity demand of provincial companies, from the original substation of 100 kilo level to the 10 kV distribution system of 100 000 class and the user terminal of 1 million or even 100 million level. Therefore, massive terminal communication is an urgent problem to be solved in power communication network. At present, the state grid corporation of China is planning to build terminal communication access network, mainly using optical fiber and Narrow Band Internet of Things wireless technology, mainly to solve the 10kV distribution system;and the communication access of tens of millions or even hundreds of millions of user terminals urgently needs a suitable communication technology to solve. At present, NB-IOT technology has the characteristics of enhanced coverage, ultra-low power consumption, mass access, etc., which can meet the above requirements. This paper mainly describes the construction of NB-IOT technology adaptability evaluation index system, introduces the evaluation method of power narrowband Internet of things, and the evaluation results and analysis of adaptability. © Published under licence by IOP Publishing Ltd.

关键词： Optical fibers

来源：评论

学校读者我要写书评

暂无评论

Research on Transmission Line Vibration Condition Monitoring System and Energy Management Scheme Based on Micro Energy Harvesting 4

Research on Transmission Line Vibration Condition Monitoring...

引用

4th International Conference on Energy, Electrical and power Engineering, CEEPE 2021

作者： Chunlong, Li Hui, Huang Yun, Liang Hongjing, Liu Kuan, Ye Kewen, Liu Global Energy Interconnection Research Institute Co. Ltd. Elec. Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing China

ISBN: (纸本)9781665433631

In view of the problem that the current transformer is mainly used in the existing transmission line vibration condition monitoring system, which is easily affected by the line load and has the problem of missing report, this paper proposes a new design scheme of transmission line vibration condition monitoring system based on micro energy collection. In this scheme, the vibration energy of transmission line is collected to obtain electric energy, and then a micro energy management circuit based on logic device is used to control the accumulation of weak energy and the power supply to the load. Finally, the sensor node can start to work when the line vibrates, so as to avoid the influence of line load on the condition monitoring system, avoid the omission of vibration data, and improve the system reliability. The experimental results show that the system can realize the condition monitoring of transmission line when the vibration frequency is 100Hz and the vibration intensity is 0.5g, 0.8g and 1g. The sampling interval is 21s, 17s and continuous sampling respectively. © 2021 IEEE.

关键词： Condition monitoring

来源：评论

学校读者我要写书评

暂无评论

Concept and Research Framework for Coordinated Situation Awareness and Active Defense of Cyber-physical power Systems Against Cyber-attacks

引用

Journal of Modern power Systems and Clean Energy 2021年第3期9卷 477-484页

作者： Ming Ni Manli Li Jun’e Li Yingjun Wu Qi Wang the NARI Group Corporation(State Grid Electric Power Research Institute) NARI Technology Co.Ltd.and the State Key Laboratory of Smart Grid Protection and ControlNanjing 211106China the School of Cyber Science and Engineering Wuhan Universityand the Key Laboratory of Aerospace Information Security and Trusted Computing of the Ministry of EducationWuhan 430072China the College of Energy and Electrical Engineering Hohai UniversityNanjing 211100China the School of Electrical Engineering Southeast UniversityNanjing 210096China

Due to the tight coupling between the cyber and physical sides of a cyber-physical power system(CPPS),the safe and reliable operation of CPPSs is being increasingly impacted by cyber *** situation poses a challenge to traditional security defense systems,which considers the threat from only one side,i.e.,cyber or *** cope with cyberattacks,this paper reaches beyond the traditional one-side security defense systems and proposes the concept of cyber-physical coordinated situation awareness and active defense to improve the ability of *** example of a regional frequency control system is used to show the validness and potential of this ***,the research framework is presented for studying and implementing this ***,key technologies for cyber-physical coordinated situation awareness and active defense against cyber-attacks are introduced.

关键词： Cyber-physical power system(CPPS) cyber security cyber-attack situation awareness active defense

来源：评论

学校读者我要写书评

暂无评论

A Surface-Wave fed Directional Dielectric Resonator Antenna for mmW power Line Communications 4

A Surface-Wave fed Directional Dielectric Resonator Antenna ...

引用

4th IEEE International Conference on Electronics technology, ICET 2021

作者： Zhai, Di Lu, Yang Jiang, Haixin Chen, Zhijiao Research Institute Corporation Elec. Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Global Energy Interconnection Beijing China Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781728176734

In this paper, a surface-wave fed directional Dielectric Resonator Antenna (DRA) is presented for millimeter-wave power line communications. The surface wave is excited by the input from the coaxial with the help of the conical transition. Then, the surface-wave propagates over the power line and excite the DRA on the other end. The simulation results verify the DRA operates at 60 GHz, with directional beam in the maximum gain of 7-9dBi and efficiency of 78.6%. The proposed methodology provides a simple directional antenna system for power line communications. © 2021 IEEE.

关键词： Surface waves

来源：评论

学校读者我要写书评

暂无评论

CryptoDetection: A Cryptography Misuse Detection Method Based on Bi-LSTM

CryptoDetection: A Cryptography Misuse Detection Method Base...

引用

International Conference on Computer and Communications (ICCC)

作者： Chunyan An Donglei Zhang Xinjie Gao Xueqiong Zhu State Grid Smart Grid Research Institute Co. Ltd. Beijing China Electric Power Intelligent Sensing Technology and Application of State Grid Corporation Joint Laboratory Beijing China State Grid Jiangsu Electric Power Company Ltd. Research Institute Nanjing China

As the dramatic increase of both number and types of IoT devices, especially the ones have stringent requirements on complexity, development period and cost, cryptography misuses are becoming increasingly common which will have a tremendous influence on the security and privacy protection. To address the above question, this paper studies the feature of 73 cryptography misuses, proposes a cryptography detection method based on Bi-LSTM which can learns forward and backward simultaneously, and then developes a prototype tool called CryptoDetection for Java source code. Experimental results have shown that the proposed detection method achieves 92% accuracy, 92% precision, 91% recall and 92% f1-score, which respectively outperforms the best one among all the compared state-of-the-art techniques.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Remote Attestation for Intelligent Electronic Devices in Smart grid Based on Trusted Level Measurement

引用

Chinese Journal of Electronics 2020年第3期29卷 437-446页

作者： WANG Yong LI Jun'e CHEN Xiong LIN Hai YU Fajiang LUO Jianbo Key Laboratory of Aerospace Information Security and Trusted Computing Ministry of EducationSchool of Cyber Science and Engineering Wuhan University NARI Group Corporation State Grid Electric Power Research Institute NARI Technology Co.Ltd. State Key Laboratory of Smart Grid Protection and Control

To reduce the implementation complexity and excessive overhead caused by remote attestation,we propose a new remote attestation scheme based on trusted level measurement considering the limited system resources of the Intelligent electronic devices(IEDs) in smart grid. In this scheme, a lightweight trusted level measurement mechanism is designed, and a new dynamic weighted multi-classifier integration method based on Binary tree Support vector machine(BT-SVM) is proposed. The trusted level of configuration information and running state of an IED are measured through trusted third party. The measurement parameters and attestation period are dynamically adjusted according to different trusted levels of an IED, so that reducing computational overhead and communication delays in remote attestation process. Analysis and experiments show that the proposed scheme can enhance the security of IEDs in smart grid by occupying a small amount of computation and communication resources.

关键词： Smart grid Intelligent electronic devices(IEDs) Remote attestation Trusted level measurement

来源：评论

学校读者我要写书评

暂无评论

A Fault Ride-Through Method Based on Energy Dissipation Device in the Scenario of Flexible HVDC grid Connection of Offshore Wind power

A Fault Ride-Through Method Based on Energy Dissipation Devi...

引用

Electrical Engineering and Control Technologies (CEECT), Conference on

作者： Xifang Huang Yu Wang Jing Ge Chengbin Chi Fusuo Liu Stability Technology Branch Company NARI Group Corporation State Grid Electric Power Research Institute Nanjing China Beijing Key Laboratory of DC Grid Technology and Simulation State Grid Smart Grid Research Institute Co. Ltd Beijing China State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co. Ltd Beijing China

ISBN: (纸本)9781665499002

The flexible HVDC transmission technology based on the modular multilevel converter (MMC) topology has a very broad application prospect in the process of large-scale renewable energy collection and transmission. This technology has become one of the best choices for long-distance offshore wind power farms to connect to the onshore power grid. In view of the special working conditions such as overvoltage in the fault state, this article proposes a controllable large-capacity self-recovery energy-dissipation device for the first time to improve the transient characteristics of the DC and AC power system. The proposed scheme has the advantages of no harmonic generation during operation, relatively simple control strategy and high current impact resistance. The electromagnetic transient simulation shows that the proposed scheme can effectively solve the overvoltage problem of DC in the offshore wind power flexible HVDC system, and improve the reliability of the HVDC system.

关键词： Arresters HVDC transmission Energy dissipation Wind power generation power system reliability Topology Reliability

来源：评论

学校读者我要写书评

暂无评论

Technical Architecture and Development Mode of power IoT Platform 4

Technical Architecture and Development Mode of Power IoT Pla...

引用

4th International Conference on Energy, Electrical and power Engineering, CEEPE 2021

作者： Tian, Wenfeng Liu, Weiliang Sun, Xiaoyan Huang, Li Global Energy Interconnection Research Institute Co. Ltd. Elec. Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing102209 China

ISBN: (纸本)9781665433631

With the development of the Energy Internet, the demand for data integration and sharing between various departments of the power grid is increasingly limited by the vertical application system. The power Internet of Things technology architecture introduces the concept of a four-layer architecture add the platform layer, and proposes to adopt the 'common platform +application subset' design model to develop a common platform for power Internet of Things. On the basis of a common platform, application apps are developed according to different applications to form an application subset, promote the transformation of vertical application development to horizontal application development, realize the integration and sharing of data between systems, and the rapid development and reuse of basic platform functions and application apps. © 2021 IEEE.

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

Design of Energy Information Collection and Analysis Terminal with Digital Edge computing Capabilities

Design of Energy Information Collection and Analysis Termina...

引用

IEEE International Conference on power and Energy Systems (ICPES)

作者： Xiao Peng Bingxiang Luo Zihao Lu Lu Zhang Yupeng Liu Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology State Grid Hunan Electric Power Corporation Limited Changsha China College of Electrical and Information Engineering Hunan University Changsha China

Within the domain of the smart grid, the conventional procedure involves the utilization of a concentrator to procure power-related data from users, subsequently subjecting this data to analysis for evaluating their electricity consumption behavior. However, this established approach is marred by issues such as the central station being burdened with extensive computational tasks and a notable lack of precision in identifying instances of irregular power consumption. This study seeks to address these shortcomings by introducing an innovative energy information collection and analysis terminal for the power system. In tandem with this, a model for effectively detecting incidents of unauthorized electricity usage is proposed. Notably, the core novelty of this research resides in the strategic integration of the Tiny4412 core board, a cutting-edge platform for edge computing. Leveraging the computational prowess of the Tiny4412 core board, the terminal is adept at promptly discerning and categorizing instances of electricity theft, without overburdening the central station with computational demands. To validate the practical viability of the proposed system, a series of empirical tests are conducted. The results unequivocally underscore the terminal’s proficiency in effectively detecting and flagging potential cases of electricity theft, leveraging meticulous analysis of data acquired from the intelligent energy meter.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Research on weak magnetic energy extraction technology of power cable and development of high efficiency energy extraction device

Research on weak magnetic energy extraction technology of po...

引用

IEEE advanced Information Management,Communicates,Electronic and Automation Control Conference (IMCEC)

作者： Pengfei Zeng Xin Liu Yongling Lu Chunlong Li Hui Huang Wentao Liu Zhen Wang Zhidong Gao State Grid Smart Grid Research Institute Co. Ltd. Beijing China Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing China State Grid Anhui Electric Power Company Hefei China State Grid Jiangsu Electric Power Company Research Institute Nanjing China State Grid Anhui Ultra high voltage company Beijing China

ISBN: (纸本)9781665479691

With the increasing scale of power cables, the lack of reliable and stable power supply for cable monitoring sensors with light load and weak magnetic field has become a key problem, and restricting the development of the Internet of Things for power transmission and distribution. This paper first analyzes the current power supply technology of cable monitoring sensors, and through the analysis of the single core cable structure and its magnetic field influencing factors, proposes a scheme for power supply of weak magnetic field cable monitoring sensors. Combined with the magnetic field energy extraction output model, a self-energy extraction device for the weak magnetic field cable environment is developed. Through the test verification, the device can complete the stable power supply of the light load cable monitoring sensor.

关键词： power cables power supplies Magnetic sensors Communication cables Magnetic analysis Magnetic fields Data mining

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：