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International Conference on Computer and Communications (ICCC)

作者： Di Zhai Chenhui Wang Gengtao Jia Junyao Wang Yang Lu Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Global Energy Interconnection Research Institute Corporation Beijing China State Grid Information and Telecommunication Branch Beijing China Information and Communication Company SMEPC SGCC Shanghai China State Grid Beijing Daxing Electric Power Supply Company Beijing China

ISBN: (数字)9781728186351

ISBN: (纸本)9781728186368

This paper develops and evaluates an accumulate-then-jam (ATJ) framework to improve the physical layer security in industrial wireless sensor networks. Specifically, multiple multi-antenna jammers are deployed to secure the communication between a source-destination pair in the presence of a passive eavesdropper. All jammers are assumed to have no embedded energy supply and thus need to perform energy harvesting (EH) from radio signals of the source before performing cooperative jamming (CJ). To maximize the system average secrecy throughput, a multiple jammer selection (MJS) scheme based on the energy status of each jammer is designed. In ATJ-MJS, each jammer is allowed to jam the eavesdropper once its accumulated energy exceeds a predefined energy threshold. To analytically evaluate the system performance, we model the dynamic charging/discharging process of each jammer's battery using the finite-state Markov chain. Analytical expression of the system average secrecy throughput is derived over mixed Rician and Rayleigh fading channels for both proposed scheme. Simulation results validate the performance analysis and illustrate that the single jammer counterpart and the ATJ-MJS can outperform each other depending on the number of jammers.

关键词： Wireless communication Wireless sensor networks Simulation Rician channels Throughput Performance analysis Jamming

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Research on passive trigger technology of thyristor controllable arrester

Research on passive trigger technology of thyristor controll...

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The 16th IET International Conference on AC and DC power Transmission (ACDC 2020)

作者： F. Li G. Qiao S. Chen Y. Jin G. Zhao W. Li Q. Shi Q. Feng State Key Laboratory of Advanced Power Transmission Technology (Global Energy Interconnection Research Institute) 102209 Beijing China State Grid Corporation of China 102209 Beijing China State Grid Shanghai Electrical Power Company Research Institute 200437 Shanghai China

The operating and lightning overvoltage in UHV system can be deeply suppressed by the thyristor controllable metal oxide arrester (TCMOA), which means that the cost of insulation for key equipment in the system can be greatly reduced. Traditional triggering methods are no longer suitable for TCMOA because of the limitation of application scenarios, such as, insulation, volume, time delay, etc. Based on the V-I characteristic of BOD, in this paper, a passive and compact trigger circuit was designed and applied to the laboratory prototype for TCMOA. The transient impact of trigger circuit and prototype tests were carried out. The results show that, the circuit can be stably turned on at about 6kV, and the action voltage index of the prototype meets the design requirements.

关键词： arresters thyristors overvoltage protection trigger circuits lightning protection

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Design and Research of a Distributed and Scalable Information Platform for Electric power Sensing

Design and Research of a Distributed and Scalable Informatio...

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IEEE Joint International Information technology and Artificial Intelligence Conference (ITAIC)

作者： Pengfei Zeng Yun Liang Wenfeng Tian Xiaoyan Sun Global Energy Interconnection Research Institute Co.Ltd. Beijing China Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing China

ISBN: (数字)9781728152448

ISBN: (纸本)9781728152455

The development of power systems has called higher requirements for sensor information platforms, and sensor information platforms have become one key supporting technology for efficient and stable operation of power grids. This article first analyzes the current IoT reference architecture and the development trend of IoT platforms. Then, a distributed sustainable integrated architecture sensor information platform is proposed to cater to the sensor requirements of the current power grid. Specifically, for the architecture, the distributed design and continuous integration design of the platform are introduced in detail. Finally, based on the designed architecture in this article, the practical work carried out by the information platform is introduced. This platform can be used for partial discharge detection of power equipment, providing edge intelligent computing support for the detection and analysis of radio frequency pulse signals.

关键词： Partial discharges Image edge detection Computer architecture Market research power grids Information technology Intelligent sensors

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Partial Discharge Fingerprint Location Method based on Broadband Radio Frequency Detection

Partial Discharge Fingerprint Location Method based on Broad...

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International Conference on Intelligent Computation technology and Automation, ICICTA

作者： Zhihao Yang Hui Huang Hui Deng Global Energy Interconnection Research Institute Co. Ltd. Nanjing China Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing

At present, more and more attention is paid to the status monitoring of power equipment, and partial discharge detection is the focus of power equipment status monitoring. A partial discharge fingerprint location method based on broadband radio frequency detection is proposed in this paper. The localization of the partial discharge source based on the broadband radio frequency detection has natural sparsity. The position of the partial discharge source is transformed into a vector with a sparsity of 1 through the discrete physical space, thereby transforming the localization of the partial discharge source into a sparse vector reconstruction problem. The sparse vector is reconstructed by using the norm l 1 optimization to solve the monitoring grid where the PD source is located. laboratory tests show that this method is accurate and has good applicability.

关键词： Partial discharges Location awareness Automation Computational modeling Fingerprint recognition Hardware Broadband communication

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Design and Implementation of Internet of Things Platform based on Microservice and Lightweight Container

Design and Implementation of Internet of Things Platform bas...

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IEEE Joint International Information technology and Artificial Intelligence Conference (ITAIC)

作者： Xiaoyan Sun Yun Liang Hui Huang Global Energy Interconnection Research Institute Co. Ltd. Beijing China Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Beijing China

ISBN: (数字)9781728152448

ISBN: (纸本)9781728152455

With the continuous development of Internet of Things technology, more and more enterprises need to construct the Internet of Things (IoT) platform to integrate and analyze various types of device data to improve economic benefits. This paper adopts microservice architecture, uses spring framework to implement microservice, uses docker container technology as the carrier of microservice, designs and implements the IoT platform. This paper analyzes and designs the requirements of the IoT platform, explains the main functions and architecture design of the IoT platform, and demonstrates the usability of the IoT platform, such as for the partial discharge detection of power equipment.

关键词： Partial discharges Economics Containers Internet of Things Usability Springs Information technology

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application of Formal Method in grid Cyber Physical Systems

Application of Formal Method in Grid Cyber Physical Systems

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IEEE Joint International Information technology and Artificial Intelligence Conference (ITAIC)

作者： Li Huang Yun Liang Hui Huang Qi Wang Sheng Qian Ruohan Zhao Global Energy Interconnection Research Institute Co. Ltd Beijing China Electric Power Intelligent Sensing Technology Application State Grid Corporation Joint Laboratory Beijing China School of Electrical Engineering Southeast University Nanjing China State Grid Electric Power Research Institute Nanjing China

ISBN: (数字)9781728152448

ISBN: (纸本)9781728152455

The power grid is one of the largest and most complex interconnected systems. It is a typical research object of the cyber physical systems. The characteristics of the grid cyber physical systems are their abilities to improve the overall performance of the system and optimize the overall system operation through more advanced control methods with stronger safety and reliability. Most of the physical terminals in the grid cyber physical systems are embedded terminals. Not only must they have conventional information interaction capabilities, but also meet the real-time requirements of measurement and control under resource constraints. The large and complex systems need to use formal methods to ensure its reliability. This paper analyzes the application of formal methods in grid cyber physical systems, designs and implements a formal verification tool suitable for information interaction model of grid cyber physical systems, and analyzes the application process of model checking tool in detail through practical cases.

关键词： Performance evaluation Substations Systems operation Petri nets Standardization Model checking Tools

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Cross-Layer Propagation Optimization Model of Electric power Wireless Signals for High-Rise Buildings

Cross-Layer Propagation Optimization Model of Electric Power...

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International Conference on Computer and Communications (ICCC)

作者： Yang Lu Chunyan An Cunlin Liu Yaming Wen Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Global Energy Interconnection Research Institute Co. Ltd. (GEIRI) Beijing China Beijing University of Posts and Telecommunications (BUPT) Beijing China

ISBN: (数字)9781728186351

ISBN: (纸本)9781728186368

In the high-rise building environment, in order to determine the signal coverage of the smart meter wireless communication module, it is essential to establish a wireless signal propagation model across floors. In this paper, transmission attenuation factor and diffractive gain factor are introduced based on the traditional multi-wall and multi-floor model (MWMF) for the electric power industry's 230MHz exclusive frequency band and 470MHz civil metering instrument frequency band, and an optimization model for the cross-layer propagation of wireless signals in the corresponding frequency band is proposed. In order to verify the accuracy of the model, the frequency sweep method is used to measure the propagation attenuation of the wireless signal in the corresponding frequency band in high-rise buildings and the model is fitted. The results show that the proposed cross-layer propagation optimization model has a better signal fitting effect. Compared with the MWMF model, the mean square error (MSE) in the measured data fitting can be reduced by up to 17%, which provides a theoretical basis for the formulation of local wireless communication strategies for smart meters.

关键词： Wireless communication Buildings Fitting Smart meters Frequency measurement power systems Optimization

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power Line Carrier and Wireless Multi-Channel Cooperative Communication Based on Adaptive Relay Selection

Power Line Carrier and Wireless Multi-Channel Cooperative Co...

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International Conference on Computer and Communications (ICCC)

作者： Yang Lu Chunyan An Lixian Ma Yaming Wen Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Global Energy Interconnection Research Institute Co. Ltd. (GEIRI) Beijing China Beijing University of Posts and Telecommunications (BUPT) Beijing China

ISBN: (数字)9781728186351

ISBN: (纸本)9781728186368

power Line Carrier (PLC) and micropower wireless are two mainstream local communication technologies for low-voltage electricity information acquisition system, the cooperation- and complementarity between which-represent the future development trend. Aiming at the high outage probability deficiency- of traditional PLC and micropower wireless cooperative communications and the insufficient utilization of channel diversity gains, an Adaptive Relay Selection (ARS) based PLC and wireless multi-channel cooperative communication method is proposed. When the quality of the PLC link between the source node and the destination node is poor, the data of the source node is first sent to the potential relay node through the micropower wireless channel. Then, based on the channel quality of the PLC link between the relay node and the destination node, as well as the channel capacity between the source node and the relay node, the relay node and relay mode can be confirmed. Thus, a virtual Multi-Input Multi-Output (MIMO) PLC array can be constructed between the relay node and the destination node, and the system reliability can be improved by using distributed space-timecoding scheme. Simulation results show that, compared with traditional methods, ARS can significantly reduce the outage probability of the relay system, and reduce the transmission error rate via transmission diversity gains of multiple relay nodes.

关键词： Low voltage Error analysis Cooperative communication Simulation Probability power system reliability Relays

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Discussion on Industrial Internet Platform Construction Based on power Internet of Things

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Journal of Physics: Conference Series 2021年第1期1939卷

作者： Yao Wang Weiliang Liu Jianqi Zhou Yun Liang Global Energy Interconnection Research Institute Co. Ltd. Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Nanjing Jiangsu China State Grid Jiaxing Electric power supply company Jiaxing Zhejiang China

At present, the development of industrial Internet platform is in a period of large-scale expansion. Since 2017, China has issued a series of documents, such as the Guidance on Deepening 'Internet + advanced Manufacturing' to Develop Industrial Internet, the Action Plan for Industrial Internet Development (2018-2020), and the Industrial Internet App Cultivation Project (2018-2020), which constantly points out the direction for the development of the industrial Internet industry. The power Internet of Things connects the equipment, customers and data in all links of energy production, transmission and consumption in real time, fully bearing the production and operation of power grid, enterprise management and new business development, etc. It has the characteristics of ubiquitous terminal access, open platform sharing, computing cloud collaboration, convenient and flexible application, etc. This paper aims to discuss how the power Internet of Things can help the construction of the industrial Internet, provide strong data resource support and service for the safe and economic operation of the power grid, improve business performance, improve service quality, cultivate and develop strategic emerging industries, and open up a new road for management innovation, business innovation and value creation.

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Construction of Evaluation Index System for the Adaptability of Narrowband Internet of Things and power Business

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Journal of Physics: Conference Series 2021年第5期1748卷

作者： Yao Wang Liang Yun Xiaoyan Sun Global Energy Interconnection Research Institute Co. Ltd. Electric 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.

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