检索结果-内蒙古大学图书馆

Location of Moving Targets in Substation Non-Line-of-Sight Environment

SENSORS 2019年第23期19卷 5321-5321页

作者： Wang, Yubo Yang, Weimin Wang, Zheng Zhou, Wenjun Li, Liang Zou, Hongsen Beijing Smart Chip Microelect Technol Co Ltd State Grid Key Lab Power Ind Chip Design & Anal T Beijing 100192 Peoples R China Wuhan Univ Sch Elect Engn & Automat Wuhan 430072 Peoples R China State Grid Ningxia Elect Power Co Ltd Yinchuan 750011 Ningxia Peoples R China

In substations, a localization system based on a wireless sensor network (WSN) is a challenge, because the propagation of the measured signal could be blocked by various devices. In other words, non-line-of-sight (NLOS) propagation, where the signal propagation path is occluded, will affect measurement accuracy. A novel localization method based on a two-step weighted least squares and a probability distribution function is proposed to reduce the influence of NLOS error on the localization result. In this method, the initial multi-group localization result is obtained by the two-step weight weighted least-squares method, and the probability distribution function of the target is constructed by using the initial localization results, which can effectively reduce the influence of the NLOS error on the localization result. The simulation and test results show that the proposed method can keep the coordinate error within 30 cm in the substation. Compared with the localization result of two-step weighted least-squares (TSWLS) method, the average localization error is reduced by more than 1 m. Compared with the other two similar algorithms, the localization accuracy is improved by more than 50%. The tested results show that the localization performance of the method is robustness in the NLOS environment of the substation. While ensuring stability, the proposed algorithm is less efficient than some existing ones. However, under the calculation conditions of ordinary computers, the average single-point calculation time is less than 0.1 s, which can meet the needs of applications in substations.

关键词： substation wireless sensor network (WSN) moving target non-line-of-sight (NLOS) probability distribution

来源：评论

学校读者我要写书评

暂无评论

A Chip Data Security Transmission Method based on Command Control Word Mode

A Chip Data Security Transmission Method based on Command Co...

引用

International Conference on Information Systems and Computer Aided Education (ICISCAE)

作者： Liu Jia Qingqin Fu Zhengquan Ang Qian Zhang Ling Yi Tingzheng Feng Xuesong Bai Yuejie Shi Beijing Smart Chip Microelectronics Technology Company Limited Beijing Electric Power High Reliability Integrated Circuit Design Engineering Research Center Beijing China Beijing aerospace flight control center Beijing China Beijing Smart Chip Microelectronics Technology Company Limited State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing China

ISBN: (数字)9781728130668

ISBN: (纸本)9781728130675

Aiming at the shortcomings of traditional security chip data transmission, a method of security chip data transmission based on command control word is proposed. The method divides the read command mode and write command mode of the security chip files into two kinds of representation methods. The read command and write command of the security chip files are transmitted by different data transmission methods. In the control word of read and write command mode of security chip files, the read and write commands of security chip files are transmitted in four ways: plaintext, ciphertext, plaintext + MAC and ciphertext + MAC. The properties of prohibit adding and updating are added to the writing command control word of security chip files. In the control word of read command and write command of security chip files, define the permissions that read command and write command operation need to satisfy.

关键词： Data communication Writing Authentication Process control Cryptography

来源：评论

学校读者我要写书评

暂无评论

Study on the deflection control of suspended tubular bus in 750kV transformer substation

Study on the deflection control of suspended tubular bus in ...

引用

作者： Xiancang Ai Yugong Feng Xiaowen Zhang Xinwei Lu Kai Chen Junfen Yang Chuanjiang Liu State Grid Gansu Construction Company State Grid Gansu Electric Power Company China Energy Engineering Group Gansu Electric Power Design Institute CO. Ltd. School of Civil Engineering Xi'an University of Architecture & Technology Key Lab of Structural Engineering and Earthquake Resistance Ministry of Education (XAUAT)

Because of the large span between bus bars and the big diameter and heavy weight of tubular buses, it has been a difficult issue to control the deflection of buses for the 750kV power distribution unit. Based on the hanging test on suspended tubular buses and the actual conditions in spot, finite models were established with different support types and rigidities to simplify the true hanging points and provide an effective reference for the optimization design of suspended tubular buses.

关键词： Study on the deflection control of suspended tubular bus in 750kV transformer substation

来源：评论

学校读者我要写书评

暂无评论

Thermal simulation and analysis of WBBGA packaging High-end Relay Protection Chip

Thermal simulation and analysis of WBBGA packaging High-end ...

引用

International Conference on (ICEPT) Electronic Packaging Technology

作者： S. F. Han X. K. Tang D. J. Li Y. Guan B. F. Li X. Y. Wang D. G. Yang State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-chip Microelectronics Technology Co. Ltd Beijing China College of Mechanical and Electrical Engineering Guilin University of Electronic Technology Guilin China

ISBN: (数字)9781728150642

ISBN: (纸本)9781728150659

The package of the High-end Relay Protection Chip is Wire Bonding BGA (WBBGA) with 257 inputs/outputs (I/Os). This paper investigated the thermal performance of the High-end Relay Protection Chip using a computational fluid dynamics (CFD) tool. Firstly, according to the initial thermal simulation results, the junction temperature of the package was 115.29 °C appeared on the Relay Protection chip as the environment temperature was 25 C. Then a parametric study was performed to investigate the junction temperatures. We analysed the influence of different parameters on the thermal performance, including Via count, Via coating thickness, Substrate area, Copper coating rate of substrate, Printed Circuit Board (PCB) area, Heat transfer coefficient of epoxy molding compound (EMC) and die attach (DA). Finally, an orthogonal experiment was designed. It's found that the heat transfer coefficient of DA was the most significant factor on the thermal performance by variance analysis, in addition, an optimal collocation of the package structure and material parameters was obtained by range analysis. The junction temperature of the optimal package was reduced to 95.69 °C by 17%. The results of these simulations give a reasonable indication of how the package would perform in a Relay Protection equipments

关键词：

来源：评论

学校读者我要写书评

暂无评论

A design of The Passive Micro Sensor for SF6 Detection

A Design of The Passive Micro Sensor for SF6 Detection

引用

IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Lei Qiao Rui Liu Xin Chu Zhe Zheng Wenpeng Cui State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing China Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing China

ISBN: (数字)9781728131375

ISBN: (纸本)9781728131382

Aiming to explore the passive micro sensor for SF6 detection, the proposed method is about designation and structure of SF6 detection micro sensor with high signal-to-noise ratio, miniaturization and passivity. Advanced micro-machining technology is presented to sharply reduce the volume of the sensor, where the volume can be reduced by more than 50% compared with the existing sensor with discrete combination. The cost and volume reduction does not only make the new detection equipment possible, but the energy consumption of the whole system will also be greatly reduced. The application and promotion of the passive micro sensor in ring network cabinet, GIS, GIL and cable channel can bring considerable economic benefits.

关键词： Sulfur hexafluoride Absorption Optical fibers Optical fiber sensors

来源：评论

学校读者我要写书评

暂无评论

Containerization of intelligent terminal application in Ubiquitous power Internet of Things

Containerization of intelligent terminal application in Ubiq...

引用

Electronic Information Technology and Computer Engineering (EITCE), International Conference on

作者： Niu Bin Bai Zhihua Li Dejian Liu Sheng Yang LiXin State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (数字)9781728135847

ISBN: (纸本)9781728135854

With the rapid construction of the ubiquitous power internet of things, the increasing demand of embedded hardware usage and the complex usage scenario of the embedded platform hardware in intelligent terminal. A more efficient vitalization solution was demanded. With the analysis of traditional virtualization solutions and the armv8 architecture embedded platform hardware support for virtualization, the implementation details of arm embedded platform supporting containerization technology are described. In particular, the specific steps of application containerization are introduced. In the end, we analyze the performance that application run in container and discuss future research directions.

关键词： Virtualization Linux Performance analysis Technical requirements Containers Kernel Neon

来源：评论

学校读者我要写书评

暂无评论

Optimal Economic and Emission Dispatch of a Microgrid with a Combined Heat and power System

引用

ENERGIES 2019年第4期12卷 604页

作者： He, Liangce Lu, Zhigang Pan, Lili Zhao, Hao Li, Xueping Zhang, Jiangfeng Yanshan Univ Key Lab Power Elect Energy Conservat & Motor Dr H Qinhuangdao 066004 Hebei Peoples R China State Grid Hebei Elect Power Co Ltd Cangzhou Power Supply Branch Cangzhou 061000 Hebei Peoples R China Tianjin Elect Power Design Inst Co Ltd China Energy Engn Grp Tianjin 300400 Peoples R China Univ Technol Sydney Sch Elect & Data Engn Sydney NSW 2007 Australia

With the rapid development of the new concept of energy internet, electric power systems often need to be investigated together with thermal energy systems. Additionally, to reduce pollution from gas emissions, it is very important to study the economic and emission dispatch of integrated electrical and heating systems. Hence, this paper proposes a multi-objective optimization dispatch model for a microgrid (MG) with a combined heat and power (CHP) system. This CHP-based MG system consists of a CHP unit, a wind turbine, a PV system, a fuel cell, an electric boiler, an electric storage, and a heat storage. It can exchange electricity with the distribution network and exchange heat with the district heating network. Minimum economic cost and minimum environmental cost are considered as the two objectives for the operation of this CHP-based MG system. To solve the two objective optimization problem, the multi-objective bacterial colony chemotaxis algorithm is utilized to obtain the Pareto optimal solution set, and the optimal solution is chosen by the Technique for Order of Preference by Similarity to Ideal Solution method. Finally, numerical case studies demonstrate the effectiveness of proposed model and method for the optimal economic and emission dispatch of the CHP-based MG system.

关键词： combined heat and power system economic and emission dispatch microgrid multi-objective optimization energy internet

来源：评论

学校读者我要写书评

暂无评论

Sensitive Information Protection of power IOT Based on Fuzzy Control Logic

Sensitive Information Protection of Power IOT Based on Fuzzy...

引用

International Conference on Mechatronics and Intelligent Robotics, ICMIR 2017

作者： Wang, Zheng Wang, Yubo Lu, Yongling Xu, Changfu Pang, Zhenjiang Guo, Yan State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing100192 China Beijing Engineering Research Center of High-Reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd Beijing100192 China State Grid Jiangsu Electric Power Company Research Institute Nanjing211103 China

ISBN: (纸本)9783319659770

With the comprehensive construction of smart grid, Internet of Things technology has been widely applied to the power generation, transmission, scheduling and many other aspects. First, a framework for the information communication system of power Internet of things is proposed Second a method based on fuzzy logic is given to judge the sensitive information. Third, the way to deal with different information is shown according to the sensitivity of the data. The feasibility and correctness of the proposed framework and method are verified by tests. © 2018, Springer International Publishing AG.

关键词： Fuzzy control

来源：评论

学校读者我要写书评

暂无评论

Leak Point Locating in Hardware Implementations of Higher-Order Masking Schemes

引用

IEEE TRANSACTIONS ON COMPUTER-AIDED design OF INTEGRATED CIRCUITS AND SYSTEMS 2018年第12期37卷 3008-3019页

作者： Tang Ming Li Yanbin Zhao Dongyan Li Yuguang Yan Fei Zhang Huanguo Wuhan Univ State Key Lab Software Engn Wuhan 430072 Hubei Peoples R China Wuhan Univ Sch Comp Sci Wuhan 430072 Hubei Peoples R China Wuhan Univ Minist Educ State Key Lab AIS&TC Wuhan 100049 Hubei Peoples R China Telecom ParisTech Commun & Elect Dept F-75634 Paris France Beijing Smart Chip Microelect Technol Co Ltd Grid Key Lab Power Ind Chip Design & Anal Technol Beijing 102200 Peoples R China

Secure masking schemes have been proven in theory to be secure countermeasures against side-channel attacks. The security framework proposed by Ishai, Sahai, and Wagner, known as the Ishai-Sahai-Wagner scheme, is one of the most acceptable secure models of the existing dth-order masking schemes, where d represents the masking order and plays the role of a security parameter. However, a gap may exist between scheme and design. Several analyses have determined that the glitch has been regarded as the main challenge of masking in hardware designs. A practical method of locating the precise position of leakage points (LPs) in the original hardware design is very rare. Existing research on this glitch mainly focuses on the first-order leakages;however, higher-order analysis can combine several shares to recover the secret key. In this paper, we propose a practical method, sensitive glitch location (SGL) method to locate the less order leakage in hardware design. Specifically, the SGL method can locate any-order of LP in the hardware implementation of dth-order masking schemes. We conducted experiments and verified that the time complexity of SGL on the dth-order masking schemes is O(nm), where m is the number of signals and n is the number of shares in masking scheme. It can therefore be regarded as an efficient tool for the masking designs. In addition, we analyzed the dth-order masking scheme proposed by Rivain and Prouff (2010) along with the SecMult algorithm from the Rivain-Prouff countermeasure, which has been analyzed by our SGL. The experimental results verified that a higher-order leakage may exist in certain hardware designs, even the masking scheme has been proven as a secure countermeasure. To the best of our knowledge, SGL is the first tool that can be used to locate any-order of power/electromagnetic LP in hardware designs. It thus shows the weakness in the original design file of hardware implementations. This property can help designers directly improve t

关键词： dth-order masking schemes field-programmable gate array (FPGA) hardware implementation practical security side-channel attack (SCA)

来源：评论

学校读者我要写书评

暂无评论

design and implementation of data transmission security channel protocol for intelligent equipment in modern power grid 2

Design and implementation of data transmission security chan...

引用

2nd IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Zhang, Yanjie Shu, Qiqi Wang, Yubo Gao, Yin Zhang, Lei Li, Yan Beijing Smart Chip Microelect Technol Co Ltd State Grid Key Lab Power Ind Chip Design & Anal T Beijing Peoples R China Beijing Smart Chip Microelect Technol Co Ltd Beijing Engn Res Ctr High Reliabil IC Power Ind G Beijing Peoples R China State Grid Anhui Elect Power Res Inst Hefei Anhui Peoples R China

ISBN: (纸本)9781538685495

With the increasing mutual interaction between smart grid and users, intelligent acquisition terminals and mobile operation terminals are widely used and accessed. The types of data transmitted in the network are more complex, and the requirements for information security protection are higher. Currently, the general security protocols for power systems do not meet the new requirements. This paper studies ISO/IEC 9798 series of standards, combines key agreement, entity authentication and hybrid algorithm technology, designs a secure channel protocol for high-security data transmission, and analyzes its complexity and time performance. Finally, it is completed based on security chip. Data transmission test shows that it has the characteristics of high security and flexible protocol, and can effectively meet the security and real-time requirements of data communication.

关键词： smart grid intelligent terminal ISO/IEC-9798 secure channel protocol

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：