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Annual Conference of Industrial Electronics Society

作者： Hu Peng Dai Chaobo Deng Zhanfeng Zhao Guoliang Yu Yongjun Wang Xin Zhou Pan Zhao Zhiwei State Grid Xinjiang Electric Power Company Xinjiang Uygur Autonomous Region China State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Beijing China Electric Power Research Institute State Grid Xinjiang Electric Power Company Xinjiang Uygur Autonomous Region China Dept. of Electrical and Electronic Engineering North China Electric Power University Beijing China

Half wavelength AC transmission (HWACT) is a promising technology with unique advantages in the field of large power transmission over long distance. However, there is little study on the grid connection of HWACT, which shall be an important technical point for its engineering application. This paper deals with the point-to-grid connection of an HWACT line. Firstly, the requirements of grid connection are reviewed, after that the quasi-synchronization is identified for the further study. Then the point-to-grid connection of HWACT under various connection conditions is simulated using PSCAD/EMTDC. The point-to-grid connection characteristics between the HWACT line and the conventional line are compared and analyzed. The simulation results show that when there is only a phase angle error and both the voltage error and the frequency error are zero, the point-to-grid connection characteristics are different. The point-to-grid connection characteristics are the same, provided that there is only a small voltage or frequency error on both sides of the grid-connection switch.

关键词： Synchronization Transient analysis Switches Synchronous generators power systems

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Method of Detection Optimization Based on Vector Electric Field Multi-electrode Gradient Information

Method of Detection Optimization Based on Vector Electric Fi...

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2017中国智能自动化会议(CIAC 2017)

作者： Jianjun Liu Chao Wu Guoyu Cui Zheng Wang Yubo Wang Guofeng Pan Guohua Liu Chengbo Hu Yongling Lu Xujie He State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd Microelectronics Technology Institute Heibei University of Technology Jiangsu Electric Power Research Institute

1 Introduction In the operation of power system,substation operation and maintenance of the substation bear the operation and maintenance management,switching operation and accident handling and other important work,t... 详细信息

关键词： simulation Method of Detection Optimization Based on Vector Electric Field Multi-electrode Gradient Information Vector

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Analysis and Research on Low-Cost and Non-Intrusive power Metering Chip

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Energy and power Engineering 2017年第4期9卷 573-580页

作者： Li-Ping Gao Xiu-Li Yu Liang Huang Tao-Rong Gong 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

Metering technology is one of the core technologies of the smart power grid. The overall metering solution and related products have a wide market space in the whole process of power production, which bring new opportunities for power distribution development from automation to intelligentialize, and provide technical supports for the power metering system platform. Because of the importance of metering products and their market demand, this paper focuses on the design of a simple power metering chip with low-cost, low-precision and non-invasive, so as to lay the foundation for the development and practical technology accumulation of power metering products. The design achieves low cost by reducing the acquisition accuracy, simplifying the collection and sampling methods. This paper studies the chip accuracy, sampling methods, collection methods, and the inference of the chip characteristics requirements.

关键词： power Metering Chip Low-Cost Low-Precision Sampling Methods

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The Application of Visible Light Communication in Cable Tunnel Patrol

The Application of Visible Light Communication in Cable Tunn...

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2017 2nd International Conference on Software, Multimedia and Communication Engineering（SMCE 2017)

作者： Tao-rong GONG De-dong SUN Rui LIU Guan-hong WANG State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co.Ltd. Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co.Ltd. State Grid Information & Telecommunication Group Co.Ltd. China Electric Power Research Institute

Visible light communication(VLC) using the light emitting diode(LED) will become an appealing alternative to the radio frequency communication technology for indoor wireless broadband ***,VLC needs a ubiquitous network as its backbone to avoid becoming an information isolated *** line communication(PLC) systems could easily solve the informative problem of VLC while powering the LED lamps at the same time,which is considered as a good partner of VLC for the cost-effective *** this paper,a novel and cost-effective framework of ubiquitous indoor broadband access based on deeply integrated VLC and PLC technology with only low-cost modification to the current infrastructure is therefore *** broadband access network supports duplex transmission through each LED using the decode-and-forward(DF) working ***,the VLC-PLC integration technology is applied to typical power grid business scene,which is cable tunnel *** the intelligent inspection,the VLC-PLC system provides voice communication and position service for on-site inspection *** system can ensure the safety and security of power production.

关键词： VLC PLC Intelligent inspection Voice communication Location service

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The Design of VLC-PLC System for Substation Inspection

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Energy and power Engineering 2017年第4期9卷 581-588页

作者： De-Dong Sun Tao-Rong Gong Rui Liu Jian Song Guan-Hong Wang State Grid Information & Telecommunication Group Co. Ltd. Beijing China 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 Tsinghua University Beijing China China Electric Power Research Institute Beijing China

A kind of integrated network architecture visible light communication (VLC) and power line communication (PLC) is put forward. This architecture is low cost and easy to implement which overcomes the shortcoming of the traditional network architecture. Furthermore, the VLC-PLC integration technology is applied to typical power grid business scene, which is substation intelligent inspection. The business process of master station platform is analyzed. During the intelligent inspection, the VLC-PLC system provides voice communication for on-site inspection personnel and management personnel, and position service. The system can ensure the safety and security of power production.

关键词： VLC PLC Intelligent Inspection Voice Communication Location Service

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An engineering applicable dynamic equivalent method for large-scale AC system connected to VSC-HVDC

An engineering applicable dynamic equivalent method for larg...

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2016 IEEE PES Asia Pacific power and Energy Engineering Conference, APPEEC 2016

作者： Lin, Zhu Xueguang, Wu Liu, Dong Global Energy Interconnection Research Institute Beijing China State Key Laboratory of Advanced Power Transmission Technology Beijing China Beijing Key Laboratory of DC Grid Technology and Simulation Beijing China

ISBN: (纸本)9781509054183

To test the software and hardware functions of VSC-HVDC control and protection device, an efficient way is to carry out the hardware-in-loop (HIL) tests and setup a detailed AC/DC transient model in real-time digital simulator. However, taking into account capability of the simulator and details of the simulation, the large scale AC network outside the converters should be simplified and equivalent. In this paper, based on a principle that the short circuit levels should be consistent before and after equivalent, a new equivalent method to calculate the equivalent generator parameters for large scale AC power system is proposed. Firstly, rated capacity and access reactance of equivalent generators are calculated according to equivalent bus's short-current. Secondly, a new criterion is provided based on short-current contribution ratio, according to short-current and short-reactance of the equivalent bus. Finally, this criterion is used to choose dominate controller of the equivalent generators, and calculate controller parameters. At the same time, the Ward method is improved. The negative line resistance and generator active output are corrected. Finally, the proposed method is used for Xiamen equivalent grid which derived from a large scale of 'Sanhua' China power grids and validated by comparison of the bus voltages, power flows, short-circuit levels and the dynamic response characteristics of the equivalent network, the validity of the proposed method is proved. © 2016 IEEE.

关键词： Timing circuits

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The Design of VLC-PLC System for Substation Inspection

The Design of VLC-PLC System for Substation Inspection

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The 9th Asia-Pacific power and Energy Engineering Conference (APPEEC 2017)

作者： De-Dong Sun Tao-Rong Gong Rui Liu Jian Song Guan-Hong Wang State Grid Information & Telecommunication Group Co.Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade Beijing Smart-Chip Microelectronics Technology Co. Ltd. Tsinghua University China Electric Power Research Institute

A kind of integrated network architecture visible light communication(VLC)and power line communication(PLC) is put forward. This architecture is low cost and easy to implement which overcomes the shortcoming of the traditional network architecture. Furthermore, the VLC-PLC integration technology is applied to typical power grid business scene, which is substation intelligent inspection. The business process of master station platform is analyzed. During the intelligent inspection, the VLC-PLC system provides voice communication for on-site inspection personnel and management personnel, and position service. The system can ensure the safety and security of power production.

关键词： VLC PLC Intelligent Inspection Voice Communication Location Service

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Highway Charging Station Plan Based on Dynamic Traffic Flow Simulation

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IOP Conference Series: Earth and Environmental Science 2018年第3期170卷

作者： Jing Zhang Hao Zhou Shaohua Liu Chang Liu Shuang Zeng Linru Jiang Bin Li Hong Liu Beijing Electric Vehicle Charging Engineering &Technology Research Center China Electric Power Research Institute Co Ltd Beijing China Smart Grid Education Key Laboratory (Tianjin University) Tianjin China Anhui Electric Power Saving Service Co Ltd State Grid Corporation of China Hefei China Beijing Electric Power Company State Grid Corporation of China Beijing China

The reasonable arrangement of the charging station, the infrastructure used to charge the electric vehicle, is vital for the promotion of electric vehicles. As for highways, a highway charging station planning method based on the dynamic traffic flow simulation is proposed in this paper. First, the running and charging demands of electric vehicles on the highways are analyzed; second, considering the interests of investors and vehicle owners, a mathematical model is constructed to specify the objective function; thirdly, the dynamic traffic flow simulation method suitable for the highway condition is proposed; finally, a method is provided, the validity and practicability of this method are verified with examples, and its effects on the photovoltaic consumption are analyzed further in this paper as for the planning result.

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A secure communication framework based on chaotic system array and its application in Internet of Energy

A secure communication framework based on chaotic system arr...

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

作者： Jinlong Li Jinzhong Li Shuqi Zhang Ke Wang Haiyang Zhang Lun Yang Xia Zhao High Voltage Department China Electric Power Research Institute Beijing China Henan Xinyang Company State Grid Corporation of China Xinyang China State Key Laboratory of Power Transmission Equipment & System Security and New technology Chongqing Unversity Chongqing China

ISBN: (纸本)9781538614280

Information communication technology(ICT) is the key issue of internet of energy(IoE). It's important and necessary to improve the information security statue. As chaotic signal is noise-like, unpredictable and sensitive to the variation of initial conditions and structure parameters, using chaotic system to build secure communication system is feasible and reliable. In this paper, a framework of secure communication system that is constructed with chaotic system array is proposed and analyzed. Different types of chaotic systems with unique structure parameters were used to form an array which generating chaotic signals for secure communicating. Chaotic signals in the array are partial or complete used to modulate/mask the message needed transmission. The encryption algorithm may be jointed while processing the message before emitting it, which can promote the secure communication system secure statue comparing to the conventional cryptosystems. The simulation verification of the secure communication system with plain-image show it works on a high performance. Moreover, this cryptosystem can be achieved with chips, DSP, FPGA, micro-computers and programming language. The application of secure communication system within chaotic system array in IoE is worth a further research.

关键词： Chaotic communication Encryption Arrays Synchronization Communication systems Array signal processing

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PLL effect on subsynchronous torsional interaction with VSC-HVDC

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The Journal of Engineering 2017年第13期2017卷 2119-2124页

作者： Rong Hu Jianhang Zhu Hongtao Liu Huafeng Zhou Jiale Chen Electric Power Dispatching Control Center of China Southern Power Grid Co. Ltd Guangzhou Guangdong 510623 People's Republic of China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 People's Republic of China

Subsynchronous torsion interaction (SSTI) between synchronous generator (SG) and high-voltage direct current (HVDC) is one of the main issues for the safe and stable operation of power systems. Compared with SSTI between SGs and line-commutated-converter (LCC)-HVDC, which has been well studied in the past, SSTI between SG and voltage source converter (VSC)-HVDC can also occur. Currently, the studies of SSTI between SG and VSC-HVDC mainly focus on the dynamics of alternating current controller of VSC-HVDC, and it is sufficient to study the electrical damping when evaluating the risk for SSTI. However, the influence of phase-locked loop (PLL) and line impedance between SG and VSC-HVDC is ignored. Here, the effect of PLL dynamics on SG electrical damping is focused. As considering the difference of rotational frame between SG and VSC-HVDC in the current loop timescale, which is caused by the line impedance X g , the mathematical model of dynamic effect of PLL on the electrical damping of SG is derived. Moreover, the optimised design of PLL in considering line impedance conditions is proposed, and it can reduce or eliminate the negative electrical damping in subsynchronous frequency region of SG to reduce the risk of SSTI between SG and VSC-HVDC. Finally, the validity of the analysis and proposed optimisation principle is verified by simulation results.

关键词： HVDC power transmission synchronous generators electric current control phase locked loops voltage-source convertors SG electrical damping VSC-HVDC line impedance SSTI subsynchronous torsional interaction PLL effect synchronous generator high-voltage direct current line-commutated-converter voltage source converter alternating current controller phase-locked loop current loop timescale subsynchronous frequency region

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