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research on the Security Verification and Evaluation System of distribution Network dispatching Instructions in Telephone Mode 3

Research on the Security Verification and Evaluation System ...

引用

3rd International Conference on Energy, power and Electrical Engineering, EPEE 2023

作者： Zhu, Chaoyue Huang, di Liu, Hongwei Chen, Panxia Luo, Shaojie Zheng, Weiyan Zhejiang Dayou Industrial Co. Ltd. Hangzhou Science and Technology Development Branch R&d Department Hangzhou China Business Service Center State Grid Hangzhou Power Supply Company Hangzhou China

ISBN: (纸本)9798350318180

Nowadays, the issue of command security in the distribution network dispatching telephone command mode is becoming increasingly prominent, and relevant personnel are paying more and more attention to the information security and accuracy when transmitting dispatching instructions to the distribution network, to prevent risks such as tampering, forgery, and theft of dispatching instruction information. The article first briefly analyzes the problems that exist in the telephone command mode during scheduling;Secondly, in response to the data security issues related to the issuance of instructions in the distribution network, based on cloud storage technology, the S-box is improved in the group encryption algorithm AES, and a chaotic system is introduced for data sequence encryption. The improved AES algorithm is combined with the chaotic system to achieve confidentiality of both parties' codes and information transmission;Simultaneously introducing upper entropy, using entropy to randomly verify the completeness and accuracy of numbers or information;Finally, the effectiveness of this method was theoretically proven, achieving efficient communication of scheduling information and ensuring the confidentiality and accuracy of received scheduling instructions. © 2023 IEEE.

关键词： cloud storage distribution network security verification and evaluation

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reliability Analysis of Electricity distribution Networks with Sampling Method;A Case Study of Sistan and Baluchestan Network

Reliability Analysis of Electricity Distribution Networks wi...

引用

Conference on Electrical power distribution Networks (EPdC)

作者： Mahmood reza Sahranavard Maria rashki Ghaleno Maryam Bandei Samira Sargazi Research office Sistan And Baluchestan Electric Power Distribution Company R&D department Niroo Taban Nimrooz Cunsulting Engineering Company Control Center Sistan And Baluchestan Electric Power Distribution Company

Finding the causes of outages and the most suitable solution for reducing them, in an economically optimal way, has always been one of the main challenges for electricity distribution companies. However, due to the variety of climate conditions, diversity in the structure, equipment, and facilities of each distribution network, as well as the difference in preventive and maintenance programs, there is no single solution to improve the reliability of distribution networks. This paper presents a novel approach based on sampling procedure to fast analyze system reliability with limited data. Considering the poor state of reliability of the distribution network of Sistan and Baluchestan province at the country scope, as well as the implementation of training and evaluation plans of distribution companies of Iran in this field, in this research, the reliability situation of the distribution network of the province is analyzed with proposed method in order to identify vulnerable areas, and then proposing a solution for improving reliability. For this purpose, the feeders of the selected cities have been determined by a two-step non-random sampling method. and then the causes of errors in the critical feeders are scrutinized. then the available solutions to improve the reliability situation for the selected city have been presented.

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research and development of intelligent Planning for distribution Network Based on Middle Platform data

Research and Development of Intelligent Planning for Distrib...

引用

Clean Energy and Electric power Engineering (ICCEPE), International Conference on

作者： Ting Chen Li Zhao En Xu Haowen Wang Jun He Qian Wu Distribution Network Planning State Grid Zhejiang Electric Power Co. Ltd. Zhuji Power Supply Company Zhuji China Distribution Network Planning T & D power research (Beijing) Technology Co. Ltd. Hangzhou Branch Hangzhou China R&D Center T & D power research (Beijing) Technology Co. Ltd Beijing China

ISBN: (数字)9798350390315

ISBN: (纸本)9798350390322

Accurate distribution network planning is the driving force to guide enterprise decision-making and scientific development of power grid, but the function of the “online power grid” platform planning and design module is not enough to support practical distribution network planning and design. di-rectly integrating the specific business functions of distribution network planning into project mid-platform will conflict with the function positioning of the mid-platform. The distribution network planning project needs planners to carry out a lot of detailed offline business work from de-mand to formulation and improvement. With the extensive development of distribution network planning, there is an urgent need for corresponding planning tools. For this reason, based on the requirements of new distribution network planning, a practical expansion platform of new distribution network intelligent planning function that can be connected to the project mid-platform is developed, so that the whole process of distribution network planning project from necessity analysis to the publication of final drawings, reports and statements can be included. The platform can be used as an “input plug” to access the data mid-platform to obtain the required input data, and as an “output plug” to output the prepared complete project to the project mid-platform.

关键词： Green energy data centers Technological innovation Web services distribution networks power grids Planning research and development Business Plugs

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research on Optimization Operation Strategy of distributed power Supply in distribution Network Based on Adaptive Particle Swarm Algorithm 5

Research on Optimization Operation Strategy of Distributed P...

引用

5th International Academic Exchange Conference on Science and technology Innovation, IAECST 2023

作者： Li, Jian Zhang, Ke Jiang, Zetao Lu, Yuxin Zhao, Yu New Energy Application R&D Technology Park Metrology Center Guangdong Power Grid Co. Ltd Shijiao Town Qingcheng District Guangdong Province Qingyuan China CSG Electric Power Research Institute Guangdong Prov. Key Laboratory of Intelligent Measurement and Advanced Metering of Power Grid No. 11 Kexiang Road Huangpu District Guangdong Province Guangzhou City China

ISBN: (纸本)9798350357738

Since the 'carbon peak, carbon neutral' dual-carbon goals put forward, new energy in the future power system in the main position to be clear, the country also further promote the implementation of renewable energy substitution action and 'clean, low-carbon, safe and efficient' energy system construction, build a new power system with new energy as the main body. New energy as the main body of the new power system. In this context, the energy saving and loss reduction of distribution network is also getting more and more attention. This paper analyzes the current situation of line loss of distribution network with distributed power supply access, fully summarizes the research dynamics and achievements of distributed power grid connection related issues at home and abroad, especially conducts an in-depth study on the impact mechanism of distributed power supply access to medium and low-voltage distribution network on line loss, and organizes the key factors of the impact of distributed power supply access to line loss of distribution network. By analyzing the impact of distributed power grid integration on distribution network line loss, a distributed power optimization model with the objective function of minimizing network loss and maximizing distributed power consumption is proposed, and the multi-objective optimal configuration model of distributed power is solved based on the adaptive particle swarm (AFIPSO) algorithm to validate the effectiveness of the proposed strategy by taking the IEEE-33 node distribution system as an example. © 2023 IEEE.

关键词： Electric power distribution

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Effect of Fatigue Crack Network in die-attach Joints on Thermal resistance

Effect of Fatigue Crack Network in Die-attach Joints on Ther...

引用

2022 International Exhibition and Conference for power Electronics, intelligent Motion, renewable Energy and Energy Management, PCIM Asia 2022

作者： Ochi, Koki Yokoyama, Yoshinori Hanada, ryuichiro Izuo, Shinichi Nishikawa, Kazuyasu Kanai, Hiroki Abe, Yoshiki Kariya, Yoshiharu Power Device Works Mitsubishi Electric Corporation Japan Advanced Technology R&D Center Mitsubishi Electric Corporation Japan Graduate School of Shibaura Institute of Technology Japan Department of Materials Science and Engineering Shibaura Institute of Technology Japan

ISBN: (纸本)9783800759125

We evaluated the effect of fatigue crack networks in die-attach joints on the thermal resistance rtℎ and found singular rise of rtℎ in the final phase of fatigue crack networks formation. Structure of samples was Si/Solder/Si joints, and Sn-based lead-free solder alloys were used for the die-attach materials. We conducted thermal cycling tests and measured rtℎ, vertical crack density and thickness of die-attach joints before/after the tests. Then, we calculated rise of rtℎ due to vertical cracks and found that increase of measured rtℎ became twice larger than calculated one in the final phase of fatigue crack networks formation. Horizontal cracks were observed in cross-sections of a severely damaged sample in addition to vertical cracks, and this caused remarkable rise of rtℎ © VdE VErLAG GMBH · Berlin · Offenbach.

关键词： Cracks

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Gas anomaly data detection based on hybrid neural network 7

Gas anomaly data detection based on hybrid neural network

引用

2022 7th International Conference on Electronic technology and Information Science, ICETIS 2022

作者： Li, Xiaolong Xu, Junwu Liao, Jiayin Wang, Chaoqun Chen, Xiaohui Li, Fang School of Computer Science and Engineering Wuhan Institute of Technology Wuhan China Product Development Department Shanghai Academy of Spaceflight Technology Shanghai China Gas Intelligent Application Technology R&D Center Shanghai Aerospace Energy Co. Ltd Shanghai China

ISBN: (纸本)9783800757794

The accurate measurement of gas flow is directly related to the economic benefits and social interests of gas enterprises. Moreover, as a kind of time-series data, there is a serious imbalance in the distribution of positive and negative samples in the data, which leads to low accuracy and difficulty in detecting gas anomaly data. To address these problems, a cost-sensitive hybrid network model is proposed in this paper. The model combines the stronger local feature learning ability of CNN network and the better sequence feature learning ability of GrU network, and then introduces a cost-sensitive loss function to solve the problem of inaccurate classification accuracy due to skewed data distribution. The experimental results show that using this model can find the outliers in the measurement data more accurately, which has some reference significance for the accurate measurement of traffic. © VdE VErLAG GMBH ∙ Berlin ∙ Offenbach.

关键词： Flow of gases

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distributed computing architecture and data communication implementation method of distribution network auxiliary planning platform

Distributed computing architecture and data communication im...

引用

Artificial Intelligence and Electromechanical Automation (AIEA), International Conference on

作者： Xiaobing Wang Wenshu ding Nian Jiang Kun Yang Yuling Wang Wenchang Shen Qian Wu State Grid Taizhou Power Supply Company Taizhou China Department of Planning Center Hangzhou branch of T&D Power Research (Beijing) Science & Technology Co. Ltd. Hangzhou China R&D Center T&D Power Research (Beijing) Science & Technology Co. Ltd. Beijing China

ISBN: (数字)9798350366174

ISBN: (纸本)9798350366181

With the rise of big data, the planning and management of intelligent distribution networks have ushered in new development opportunities. Through the comprehensive integration, in-depth analysis, and effective mining of a large amount of heterogeneous data in the distribution network, various problems and challenges encountered in the planning process of intelligent distribution networks can be effectively addressed. However, this process relies on powerful computing power as support. This study focuses on exploring methods for deploying distributed computing communication in cluster environments to efficiently, flexibly, and reliably perform various tasks. By analysing the calculation time of actual power grid planning data, this study verifies the effectiveness and practicality of the proposed distributed computing architecture and communication design scheme.

关键词： data acquisition distributed databases distribution networks Computer architecture power grids Planning data communication reliability data mining Middleware

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Investigation of Full SiC power Modules for More Electric Aircraft With Focus on FIT rate and High-Frequency Switching

Investigation of Full SiC Power Modules for More Electric Ai...

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作者： Nakashima, Junichi Horiguchi, Takeshi Mukunoki, Yasushige Hatori, Kenji Tsuda, ryo Uemura, Hitoshi Hagiwara, Makoto Urakabe, Takahiro Mitsubishi Electric Corporation Advanced Technology R&d Center Amagasaki661-8661 Japan Mitsubishi Electric Corporation Power Device Works Fukuoka819-0192 Japan Tokyo Institute of Technology Department of Electrical and Electronic Engineering Tokyo152-8550 Japan

The development of more electric aircraft (MEA) has accelerated in recent years. power converter systems for MEA require higher reliability compared with the conventional power converter systems as well as higher energy efficiency. A power device at high altitude might break down at a certain rate because of cosmic rays. Thus, it is necessary to carefully consider the reliability of single event burnout together with the converter design. This study examines a failure in time (FIT) rate comparison among three different inverter configurations using 3.3-kV and 6.5-kV full SiC power modules (FSPMs) under several operating conditions. It presents module and inverter configuration selection criteria in consideration of the FIT rate. In addition, the transitions of FIT rates during the flight are calculated using actual flight data to help the power converter system designers understand how the FIT rate should be considered. Furthermore, this study verifies a high-frequency switching operation at various bus voltages for a 6.5-kV FSPM and the power loss calculation for MEA applications. © 1972-2012 IEEE.

关键词： Temperature distribution

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Layout and Wiring Algorithm for distribution Grid Geographic Wiring diagram Based on GIS

Layout and Wiring Algorithm for Distribution Grid Geographic...

引用

New Energy and power Engineering (ICNEPE), International Conference on

作者： Qibo He Ling Zheng Zheng Tang Kun Yang Nian Jiang Qian Wu Distribution Network Planning Center State Grid Wuxi Power Supply Company Wuxi China Distribution Network Planning Department T&D Power Research (Beijing) Technology Co. Ltd. Hangzhou Branch HangZhou China General Manager Office T&D Power Research (Beijing) Technology Co. Ltd. Hangzhou Branch HangZhou China R&D Center T&D Power Research (Beijing) Technology Co. Ltd Beijing China

There has always been an urgent demand for GIS graphic aesthetics technology among Smart Grid planner. This article proposes a distribution network GIS graphic beautification algorithm based on Tyson polygons. Firstly, several feeders with similar distances are merged into a single feeder group through buffering processing to obtain an envelope buffer zone; Then use the Tyson polygon to obtain the centerline of the buffer zone and the specific feeder segments contained in each "corridor", and arrange all feeder segments within this corridor at equal intervals; Then, the "forward and backward" method is used to obtain the connection relationship between the upper and lower segments of the entire feeder line. Finally, the relevant distribution equipment and switchgear are connected to their respective feeder segments, completing the beautification of the entire feeder line. This algorithm solves the technical difficulty of beautifying single line diagrams in distribution network GIS, enabling it to be directly used in the planning and compilation of geographical wiring diagrams in distribution networks.

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A design and control method for Pole Changing Induction Machine for Traction Application

A design and control method for Pole Changing Induction Mach...

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IEEE Energy Conversion Congress and Exposition, ECCE

作者： Kan Akatsu Naoya Kato Tsurube Masayoshi Tomonari Mori Masanori Watahiki Department of Faculty of Engineering Division of Intelligent Systems Engineering Yokohama National University Kanagawa Japan Department of Electrical Engineering Yokohama National University Kanagawa Japan NIDEC CORPORATION Nidec Product Technology R&D Center Kanagawa Japan

ISBN: (数字)9798350376067

ISBN: (纸本)9798350376074

This paper presents a design method of a Pole Changing Induction Machine (PCIM) with double 3 phase inverter. The winding method and a design of the machine geometry to maximize the advantage of the pole changing IM are shown. Also, a driving method of PCIM which can reduce the torque shock under the pole changing is described. Some simulation and experimental results show the effectiveness of PCIM and torque shock reduction under the high torque conditions.

关键词： Torque Voltage measurement design methodology Electric shock Windings Traction motors Inverters Induction machines Voltage control power generation

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