A New Smart Substation Structure with Single Net and Single Equipment

2013 ◽  
Vol 392 ◽  
pp. 572-575
Author(s):  
Li Jun Qin ◽  
Ning Hui Guo
Keyword(s):  
Network Structure ◽  
Industrial Ethernet ◽  
Engineering Applications ◽  
Key Technology ◽  
Key Technologies ◽  
New Generation ◽  
Smart Substation ◽  
Ethernet Switch

a new generation of single equipment and single network structure of intelligent substation is proposed in this paper on the basis of the current three layers two network smart substation, the key technology of this kind of new intelligent substation needs are also proposed in this paper, such as port mirroring, VLANs and IEEE1588. Examples of key technologies are presented,using industrial Ethernet switch, providing reference for engineering applications of new smart substation .

scholarly journals Remaining Useful Life Estimation of Aircraft Engines Using a Joint Deep Learning Model Based on TCNN and Transformer

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Hai-Kun Wang ◽  
Yi Cheng ◽  
Ke Song
Keyword(s):  
Deep Learning ◽  
Working Conditions ◽  
Health Management ◽  
Remaining Useful Life ◽  
Aircraft Engines ◽  
Key Technology ◽  
Life Estimation ◽  
Useful Life ◽  
New Generation ◽  
Deep Learning Model

The remaining useful life estimation is a key technology in prognostics and health management (PHM) systems for a new generation of aircraft engines. With the increase in massive monitoring data, it brings new opportunities to improve the prediction from the perspective of deep learning. Therefore, we propose a novel joint deep learning architecture that is composed of two main parts: the transformer encoder, which uses scaled dot-product attention to extract dependencies across distances in time series, and the temporal convolution neural network (TCNN), which is constructed to fix the insensitivity of the self-attention mechanism to local features. Both parts are jointly trained within a regression module, which implies that the proposed approach differs from traditional ensemble learning models. It is applied on the Commercial Modular Aero-Propulsion System Simulation (C-MAPSS) dataset from the Prognostics Center of Excellence at NASA Ames, and satisfactory results are obtained, especially under complex working conditions.

Research on X-Band Weather Radar Network Based on Sensor Grid

2012 ◽  
Vol 468-471 ◽  
pp. 1274-1277
Author(s):  
Chen Li
Keyword(s):  
Weather Radar ◽  
Key Technology ◽  
Radar Systems ◽  
Radar Network ◽  
Additional Equipment ◽  
X Band ◽  
Architectural Framework ◽  
Information Advantage ◽  
New Generation ◽  
Network Advantage

Monitoring of precipitation using X-band weather radar systems is becoming popular. X-band weather radar network, as an additional equipment of China new generation weather radar, primarily used to measure weather echo within 3km above the ground and has a high prospect. The network, based on sensor grid, is greater information advantage and network advantage. This paper describes the design, the key technology and implementation of an architectural framework of the weather radar network based on sensor grid. The results show that the network works robustly in real time.

Reliability Evaluation of Main Electrical Connection for the Smart Substation with DCB

2014 ◽  
Vol 521 ◽  
pp. 453-456
Author(s):  
Yang Qi Huang ◽  
Jian Hua Zhang ◽  
Xin Yi Lu ◽  
Nian Liu
Keyword(s):  
Smart Grid ◽  
Research And Development ◽  
Reliability Evaluation ◽  
Design Concept ◽  
Electrical Connection ◽  
Minimal Cut Set ◽  
Execution Unit ◽  
Cut Set ◽  
New Generation ◽  
Smart Substation

As an important part of smart grid, smart substation is the acquisition source of operating data and command execution unit, and also acts as the important foundation and support of smart grid. With the continuous deepening of smart substation construction in State Grid Corporation, the overall integration design concept of the new generation smart substation based on research and development of new equipment has been put forward, realizing the main electrical connection optimization and improvement of reliability .Concerning the characteristic and application of DCB in smart substation, reliability of three kinds of typical main electrical connection schemes in existing substation and smart substation is calculated by the minimal cut-set method in this paper.

scholarly journals Digital Metering System of New Generation Smart Substation in China

2016 ◽  
Vol 55 ◽  
pp. 06007 ◽  
Author(s):  
Jingfen Bai ◽  
Fantao Lin ◽  
Xiangjiang Yang ◽  
Jia Zuo ◽  
Yingying Cheng ◽  
...  
Keyword(s):  
New Generation ◽  
Smart Substation

Research on Optimization and Application of LOD Algorithm in Virtual Reality Visualization of Terrain

2014 ◽  
Vol 687-691 ◽  
pp. 1258-1261
Author(s):  
Jing Sun ◽  
Hong Tao Wang
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Large Scale ◽  
Design Work ◽  
Terrain Rendering ◽  
Key Technology ◽  
Progressive Mesh ◽  
Key Technologies ◽  
Methods And Techniques ◽  
Visibility Culling

With the development of computer graphics, real-time rendering-based VF: technology has been applied in more and more fields. LOD is the key technology in large-scale terrain rendering. In this paper, the basic concept of LOD is introduced briefly and some algorithms of LOD in use are mentioned and analyzed; secondly as one of algorithms of LOD, View-Dependent Progressive Mesh algorithm is studied and improved, the result of implementing the large-scale terrain’s LOD by using VDPM is presented. There are key technologies in LOD Large-scale terrain real-time rendering are researched. Relative technologies are presented such as: LOD of the terrain, visibility culling, and cracks eliminate, view-dependent refine, LOD error, technologies of texture etc. Using LOD technology, VR system can greatly reduce the; number of polygons produced in real-time rendering procedure. Finally, we do experimental design work based on the methods and techniques presented by this paper.

Key Technologies Research of MEMS Pressure Sensor for Fuze

2014 ◽  
Vol 472 ◽  
pp. 242-246
Author(s):  
Bo Jiang ◽  
Xing Lin Qi ◽  
Zhi Ning Zhao
Keyword(s):  
High Temperature ◽  
Pressure Sensor ◽  
High Frequency ◽  
Development Trend ◽  
Military Industry ◽  
Key Technology ◽  
Sensor Applications ◽  
Key Technologies ◽  
Mems Technology ◽  
The Development Trend

MEMS technology has been widely used in military industry, in order to further expand the scope of the MEMS pressure sensor applications in military industry, to make fuze development toward miniaturization and intelligent, do the study on special fuze MEMS pressure sensor. Environment of MEMS pressure sensor application in fuze is analyzed, consist service treatment environment and using environment, which can provide indicators for the development of the sensor. The paper analyzes several key technology of the fuze MEMS pressure sensor, including the technique of high temperature resistant, acceleration compensation, leadless, high frequency resistant and overload resistant and so on. To sum up, the continuous development of MEMS technology can make its products meet the use environment of fuze, and the development trend of the fuze also needs the support of MEMS technology, so it is necessary and feasible to carry out the research of the fuze MEMS pressure sensor.

Key Technology of the Denture CAD/CAM System

2014 ◽  
Vol 494-495 ◽  
pp. 637-640
Author(s):  
Xiu Guang Ge ◽  
Xue Ling Jiang ◽  
Li Hui Chen ◽  
Jian Hong Liao
Keyword(s):  
Data Processing ◽  
Surface Reconstruction ◽  
Low Cost ◽  
Cnc Machining ◽  
Key Technology ◽  
Model Acquisition ◽  
Key Technologies ◽  
Cad Cam ◽  
Cad Models ◽  
Solid Foundation

The key technologies of denture CAD/CAM system were studied in this study. Key technologies include: model acquisition, data processing, surface reconstruction, creating CAD models, establish standards tooth databases, rapid prototyping and CNC machining. The results show that the actual dentures feasibility of CNC processing systems and the denture model is validated. This study lays solid foundation for the development of the low-cost, lightweight and fast denture CAD/CAM system.

Key Technology of Form Grinding Wheel’s Axis Section’s Derivation

2013 ◽  
Vol 753-755 ◽  
pp. 1557-1561
Author(s):  
Ling Zhang ◽  
Bin Yao ◽  
Zhi Huang Shen ◽  
Wen Chang Zhao ◽  
Bin Zhou
Keyword(s):  
Research Method ◽  
Screw Compressor ◽  
Grinding Wheels ◽  
Relevant Research ◽  
Key Technology ◽  
Form Grinding ◽  
Key Technologies ◽  
Twin Screw ◽  
Screw Rotors ◽  
The Mathematical Model

Upon researching on the form grinding principle of rotor of the twin-screw compressor, firstly, this article gives the mathematical model of acquiring form grinding wheels axis section from screw rotors end section which is given by a series of discrete points. Then some key technologies to solve problems during the derivation of grinding wheels axis section and relevant research method to optimize the best setting angle have been analyzed. And last, the results of simulation and actual processing prove that this method is reliable and can meet the requirements of machining precision.

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