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19th IEEE International Conference on Communication Technology, ICCT 2019

作者： Yi, Xu Xu, Hu Xi, Feng Yi, Hu Xiaoke, Tang Beijing Smart-Chip Microelectronics Technology Co. Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing China

ISBN: (纸本)9781728105352

One of the most important performance index of UHF RFID tags is the operating distance, which can be extended by reducing the power consumption of RFID tags. In this paper, an RFID chip based on EPC Class -1 Generation-2/ISOIS000-6C protocol is presented. An optimization method for dynamic power consumption of clock tree in digital back-end design is proposed. This method can further reduce the dynamic power consumption for the completed layout. Under the condition of return frequency 170kHz, the simulated power consumption is reduced from 1. 4S3uW to 1. 357uW for the chip which was taped out with the TSMC 0. 18um process. © 2019 IEEE.

关键词： Electric power utilization

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Research and design of key Management System in power Distribution Network Based on Quantum Private Communication 2

Research and Design of Key Management System in Power Distri...

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2nd IEEE International Conference on Information Systems and Computer Aided Education, ICISCAE 2019

作者： Xia, Shaoxian Ye, Hongshu Xia, Xin Xue, Binbin Yang, Kewen Lu, Yuhua Beijing Smart-Chip Microelectronics Technology Co. Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing China

ISBN: (纸本)9781728130668

power distribution operation involves the supervision and control of the operating states of a large distribution power grid. This technology includes several features, e.g. an abundant amount of application nodes, diversity of communication channels, etc. To accelerate the construction of State grid-electric Internet of things and to guarantee the security of power grids data network and to consider the feature of power grids, a synthetic key management system is proposed. In the first section of this paper, from the perspective of maturity and practicality of related technology, the feasibility of combining quantum private communication and automatic power grid key management system is analyzed and demonstrated. In the next section, a key-management method, which is designed to combine quantum private communication technology and interaction with encryption devices, is designed and implemented. In the concluding section, to guarantee the integrity and atomicity in key storage processes and to achieve the quantum key storage, rollback mechanism of large-capacity quantum key storage is studied and discussed. © 2019 IEEE.

关键词： Electric power transmission networks

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Performance analysis of IEEE 802.15.4g MR-OFDM with Frequency Offset 19

Performance Analysis of IEEE 802.15.4g MR-OFDM with Frequenc...

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19th IEEE International Conference on Communication Technology, ICCT 2019

作者： Liu, Jichao Zhao, Yahong Yang, Ji Tang, Xiaoke State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

ISBN: (纸本)9781728105352

IEEE 802.15.4g Standard specifies multi-rate and multi-regional orthogonal frequency division multiplexing (MR-OFDM) physical layer, which supports principally outdoor, low-data-rate, wireless, smart metering utility network (SUN). Caused by Doppler frequency shift of fading channel, the inter-channel interference (ICI) arises in MROFDM system. In this paper, the degrading of performance due to ICI for detection of phase shift keying modulation signal is provided. It is derived that non-ideal properties for reception symbols are characterized by sampling offset and phase shift on subcarrier. Furthermore, the influence on data demodulation under different conditions is analyzed in detail. Simulation results are consistent with the theoretical analysis. © 2019 IEEE.

关键词： Orthogonal frequency division multiplexing

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An analysis of power Dissipation analysis and power Dissipation optimization Methods in Digital Chip Layout design 19

An Analysis of Power Dissipation Analysis and Power Dissipat...

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19th IEEE International Conference on Communication Technology, ICCT 2019

作者： Zhang, Yapeng Hu, Xu Feng, Xi Hu, Yi Tang, Xiaoke Beijing Smart-Chip Microelectronics Technology Co. Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing China

ISBN: (纸本)9781728105352

With the development of integrated circuit (IC), power dissipation has become an important index of chip performance. This paper first discusses the sources and types of chip power dissipation, then introduces the methods of static power dissipation analysis and dynamic power dissipation analysis, and finally gives the power dissipation analysis and optimization methods of IC chip digital layout design stage. © 2019 IEEE.

关键词： Integrated circuit layout

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Task classification-aware data aggregation scheduling algorithm in wireless sensor networks

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International Journal of Mobile Network design and Innovation 2019年第2期9卷 106-117页

作者： Zou, Hongsen Li, Liang Ao, Chen Zhan, Puning Li, Ning Wang, Zheng State Grid Ningxia Electric Power Co. Ltd. Ningxia750011 China State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing100192 China School of Communication and Information Engineering Chongqing University of Posts and Telecommunications Chongqing400065 China State Grid Ningxia Electric Power Company Maintenance Company Ningxia750011 China

In order to minimise the delay of data aggregation scheduling, a task classification aware data aggregation scheduling algorithm is proposed. Through the multi-power and multi-channel approach of sensor nodes, maximum independent sets are used to construct network topology structure based on data aggregation backbone tree. According to the scheduling priority, the data aggregation scheduling within clusters is achieved by approximating the greedy algorithm. Besides, combined with sparse coefficient, sensing task type reduces the amount of data transmission, and then the level of cluster head nodes in the network is used to achieve data aggregation scheduling between clusters. Numerical results show that the proposed algorithm can reduce cluster heads data traffic and energy consumption, while shortening the data aggregation delay and enhancing the network survivability. © 2019 Inderscience Enterprises Ltd.

关键词： Scheduling

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Application verification of power IOT low-power MCU in laboratory environment 3

Application verification of power IOT low-power MCU in labor...

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3rd IEEE International Conference on Electronic Information Technology and Computer Engineering, EITCE 2019

作者： Zhang, Yanxin Li, Jinwang Li, Dejian Tan, Lang Yang, Lixin Yu, Baodong Beijing Smart-Chip Microelectronics Technology Co. Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing100192 China

ISBN: (纸本)9781728135847

Focusing on the requirements of ubiquitous power IOT construction and improving the overall technical level RI WKH State grid Chiṕ LQGXVWU\ RXU FRPSDQ\ KDV independently developed a low-power general-purpose MCU chip, which can be widely used in the battery-powered applications, such as indicator unit of fault indicators and smart meters. This paper introduces an MCU verification method based on the fault indication unit application in the laboratory environment, that is, how to set up the application scenario of the simulated fault indication unit in the laboratory environment to verify whether the various indicators of the chip meet the actual application requirements. The verification method includes software implementation, laboratory hardware verification environment construction, and verification method implementation. © 2019 IEEE.

关键词： Verification

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A novel polyurethane-LiF artificial interface protective membrane as a promising solution towards high-performance lithium metal batteries

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JOURNAL OF power SOURCES 2020年 477卷 228694-228694页

作者： Liu, Yan Tao, Runming Chen, Shengrui Wu, Kai Zhong, Zhaofeng Tu, Ji Guo, Pingmei Liu, Honghao Tang, Shun Liang, Jiyuan Cao, Yuan-Cheng Jianghan Univ Key Lab Optoelect Chem Mat & Devices Minist Educ Wuhan 430056 Peoples R China Univ Tennessee Dept Chem Knoxville TN 37996 USA Oak Ridge Natl Lab Chem Sci Div Oak Ridge TN 37831 USA Huzhou Elect Power Design Inst Co Ltd Huzhou 313000 Peoples R China State Grid Yili Elect Power Supply Co Yili City 835000 Xinjiang Peoples R China Huazhong Univ Sci & Technol Sch Elect & Elect Engn Wuhan 430074 Peoples R China

To construct highly stable Lithium (Li) metal batteries (LMBs), a polyurethane-LiF based artificial protective membrane (APM) is evenly coated onto LM anodes by a facile solution casting method. Owning to the good ionic conductivity and mechanical properties, APM acts as a physical protective isolation layer between electrolytes and LM to alleviate electrolyte decomposition and suppress Li dendrites. By applying the APM modification, the electrochemical performance of LM is dramatically improved. The Li vertical bar APM-Cu half-cell stably circulates 120 cycles with a high Coulombic efficiency of above 90% at a current density of 1 mA cm(-2) and an area capacity of 1 mAh cm(-2). The APM-Li based symmetric cell presents an ultralong life span of over 1500 hat an area capacity of 1 mAh cm(-2 )and a current density of 0.5 mA cm(-2). In full-cell tests, the APM-Li vertical bar LiFePO4 configuration maintains a high specific capacity of 120.4 mAh g(-1) after 600 cycles with a superior capacity retention of 97.3% at 2C. Additionally, the extraordinary cyclability of APM-Li vertical bar Li(4)Ti(5)O(12 )full-cell demonstrates the effectiveness and versatility of APM. The scanning electron microscopy studies confirm the APM's suppression effects of Li dendrites. Therefore, this work provides a promising and affordable APM modification strategy to redeem highly stable LMBs.

关键词： Lithium metal anode Artificial protective membrane Lithium dendrite Lithium-ion deposition regulation Cyclic stability

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A Synchronization Algorithm for Burst-Mode MR-OFDM System of 802.15.4g

A Synchronization Algorithm for Burst-Mode MR-OFDM System of...

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2019 International Conference on Artificial Intelligence Technologies and Applications, ICAITA 2019

作者： Zhao, Yahong Zhao, Xu Zhang, Yubing Tang, Xiaoke Dong, Mingke State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing Smart-Chip Design and Analysis Technology Co. Ltd Beijing100192 China School of Electronics Engineering and Computer Science Peking University Beijing100871 China

This paper presents a refined coarse frame synchronization algorithm for long repeated-sequence based preamble STF (short training field) in burst mode MR-OFDM system of 802.15.4g which is of low decision delay and resistant to timing uncertainty due to metric plateau. The precision of coarse timing and frequency offset estimation is improved. A fine symbol timing and frequency offset estimation algorithm based on LTF (long training field) is also proposed which provides an overall solution for the synchronization of burst mode MR-OFDM system. Simulation results are given to provide reference for implementation. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Synchronization

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Delay CoMP of LoRa Modulation in Wireless Tree Topology Network 19

Delay CoMP of LoRa Modulation in Wireless Tree Topology Netw...

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19th IEEE International Conference on Communication Technology, ICCT 2019

作者： Li, Hongqiang Zhang, Yubing Zhao, Xu Tang, Xiaoke Beijing Smart-Chip Microelectronics Technology Co. Ltd. State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology Beijing100192 China

ISBN: (纸本)9781728105352

The rapid development of Internet of Things (IoT) puts forward much requirements for wireless communication technology. Low power Wide Area Networks (LPWAN) are designed for low bandwidth, low power, long range and large number of connected IoT applications. As one of the LPWAN, Low power Long Range Transceiver (LoRa) described as a Frequency Shift Chirp Modulation (FSCM), is widely concerned and studied. In this paper, the signal reception of LoRa modulation in the wireless tree topology is analyzed, and the multi-user interference analysis proves that the multi-user interference has a great impact on the system performance. At the same time, we proposed Delay Coordinated Multiple Points Transmission (DCoMP). Multiple nodes close to each other send the same data to the target node. Due to the inaccuracy of synchronization between nodes, there will be a certain timing offset when sending signals to the same target node. After combining signals of multiple nodes according to different timing offset, the receiver performance of signals can be improved. The coordinated nodes can also actively adjust the signal sending timing according to the path time delay and processing delay, so as to improve the receiving performance of the signal merging algorithm of the receiver node. LoRa modulation improves the signal reception performance by adopting DCoMP transmission, thus improving the overall throughput of the system. © 2019 IEEE.

关键词： Internet of things

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Study on the deflection control of suspended tubular bus in 750kV transformer substation 5

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

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5th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE)

作者： Ai, Xiancang Feng, Yugong Zhang, Xiaowen Lu, Xinwei Chen, Kai Yang, Junfen Liu, Chuanjiang State Grid Gansu Construct Co Lanzhou 730000 Peoples R China State Grid Gansu Elect Power Co Lanzhou 730000 Peoples R China Gansu Elect Power Design Inst CO Ltd China Energy Engn Grp Lanzhou 730000 Peoples R China Xian Univ Architecture & Technol Sch Civil Engn Xian 710055 Peoples R China Minist Educ XAUAT Key Lab Struct Engn & Earthquake Resistance Xian 710055 Peoples R China

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： Buses

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