scholarly journals Three Dimensional Information Sharing Platform of Power Transmission and Transformation Based on Grid Information Model (GIM)

2020 ◽  
Vol 780 ◽  
pp. 032049
Author(s):  
Shaoyuan Lin ◽  
Tianrong Zhong ◽  
Xinmin Yu ◽  
Weichao Luo ◽  
Jinglei Lv
Keyword(s):  
Information Sharing ◽  
Power Transmission ◽  
Three Dimensional ◽  
Information Model

scholarly journals An Energy Efficient Routing Approach for IoT Enabled Underwater WSNs in Smart Cities

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4116
Author(s):  
Nighat Usman ◽  
Omar Alfandi ◽  
Saeeda Usman ◽  
Asad Masood Khattak ◽  
Muhammad Awais ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Water Surface ◽  
Power Transmission ◽  
Smart Cities ◽  
Cluster Head ◽  
Three Dimensional ◽  
Energy Efficient Routing ◽  
Underwater Environment ◽  
Ocean Environment ◽  
Smart Technologies

Nowadays, there is a growing trend in smart cities. Therefore, Terrestrial and Internet of Things (IoT) enabled Underwater Wireless Sensor Networks (TWSNs and IoT-UWSNs) are mostly used for observing and communicating via smart technologies. For the sake of collecting the desired information from the underwater environment, multiple acoustic sensors are deployed with limited resources, such as memory, battery, processing power, transmission range, etc. The replacement of resources for a particular node is not feasible due to the harsh underwater environment. Thus, the resources held by the node needs to be used efficiently to improve the lifetime of a network. In this paper, to support smart city vision, a terrestrial based “Away Cluster Head with Adaptive Clustering Habit” (ACH) 2 is examined in the specified three dimensional (3-D) region inside the water. Three different cases are considered, which are: single sink at the water surface, multiple sinks at water surface,, and sinks at both water surface and inside water. “Underwater (ACH) 2 ” (U-(ACH) 2 ) is evaluated in each case. We have used depth in our proposed U-(ACH) 2 to examine the performance of (ACH) 2 in the ocean environment. Moreover, a comparative analysis is performed with state of the art routing protocols, including: Depth-based Routing (DBR) and Energy Efficient Depth-based Routing (EEDBR) protocol. Among all of the scenarios followed by case 1 and case 3, the number of packets sent and received at sink node are maximum using DEEC-(ACH) 2 protocol. The packets drop ratio using TEEN-(ACH) 2 protocol is less when compared to other algorithms in all scenarios. Whereas, for dead nodes DEEC-(ACH) 2 , LEACH-(ACH) 2 , and SEP-(ACH) 2 protocols’ performance is different for every considered scenario. The simulation results shows that the proposed protocols outperform the existing ones.

SEISMIC RESPONSE OF POWER TRANSMISSION TOWER-LINE SYSTEM UNDER MULTI-COMPONENT MULTI-SUPPORT EXCITATIONS

2012 ◽  
Vol 06 (04) ◽  
pp. 1250025 ◽  
Author(s):  
TIAN LI ◽  
LI HONGNAN ◽  
LIU GUOHUAN
Keyword(s):  
Seismic Waves ◽  
Power Transmission ◽  
Incident Angle ◽  
Ground Motions ◽  
Three Dimensional ◽  
Transmission Tower ◽  
Line System ◽  
Time Stepping ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

The effect of multi-component multi-support excitations on the response of power transmission tower-line system is analyzed in this paper, using three-dimensional finite element time-stepping analysis of a transmission tower-line system based on an actual project. Multi-component multi-support earthquake input waves are generated based on the Code for Design of Seismic of Electrical Installations. Geometric non-linearity was considered in the analysis. An extensive parametric study was conducted to investigate the behavior of the transmission tower-line system under multi-component multi-support seismic excitations. The parameters include single-component multi-support ground motions, multi-component multi-support ground motions, the correlations among the three-component of multi-component multi-support ground motions, the spatial correlation of multi-component multi-support ground motions, the incident angle of multi-component multi-support seismic waves, the ratio of the peak values of the three-component of multi-component multi-support ground motions, and site condition with apparent wave velocity of multi-component multi-support ground motions.

Modeling a Flexible-Link Power Transmission System

1992 ◽  
Author(s):  
Maureen J. Murray ◽  
Thomas R. Canfield
Keyword(s):  
Power Transmission ◽  
Three Dimensional ◽  
Pilot Project ◽  
Rigid Body Dynamics ◽  
Computer Simulation Model ◽  
Flexible Link ◽  
Complex Action ◽  
3 Dimensional ◽  
Track System ◽  
Body Dynamics

Abstract The flexible link and sprocket system of a tracked vehicle was modeled as part of a supercomputing pilot project on a Cray X-MP supercomputer. This computer simulation model utilizes the ADAMS 3-dimensional rigid body dynamics code. Using this ADAMS model of the track system, engineers can simulate the complex action of this three dimensional mechanism, and, through the use of graphics, can illustrate the behavior of the interaction of the components in this track system.

Waveguide Inductive Strip Filter Embedded in LTCC

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000043-000049
Author(s):  
Ehab Abousaif ◽  
Aicha Elshabini ◽  
Fred Barlow
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Filter Design ◽  
Dielectric Material ◽  
Design Method ◽  
Three Dimensional ◽  
Variation Principle ◽  
High Frequency Structure Simulator ◽  
Waveguide Filters ◽  
Inductive Elements

Microwave filters are generally designed with microwave transmission lines. However these filters are typically lossy. The waveguide filters using conventional inductive elements such as metal rods and transverse diaphragm have some disadvantages such as complicated structure, high cost and they can be hard to mass produce. But they also have many advantages such as the capability of high power transmission, a non-radiating structure, and their thermal efficiency. A novel waveguide inductive strip filter embedded in LTCC is introduced in this paper where the disadvantages of the conventional waveguide filters are eliminated. By using LTCC technology, the cost will typically be lower, it can easily be mass produce, and these designs can also be tested easily. The equivalent T-network parameters of the inductive strip mounted in a waveguide and embedded in LTCC substrate were derived. A new iterative technique was used based on the Variation principle. The design formulas and curves of the filter were presented. The design method of the filter was derived by applying the equivalent network of the inductive strip to the usual method of the filter design. A complete set of new curves relating the various filter parameters were introduced. Similar curves can be derived to design similar filters for any frequency band using any dielectric material. Three-dimensional electromagnetic field modeling and simulation was carried out using HFSS (High Frequency Structure Simulator). An optimization process was done for the designed filter. The modeling and the optimization S-parameters curves are shown. This paper introduces a new methodology of designing waveguide inductive strip filters embedded in LTCC. The design methodology was derived and presented with formulas and curves. The design steps are explained and verified by examples and results.

Modeling and Mapping Implementation of Substation Knowledge Ontology Based on Protégé

2012 ◽  
Vol 198-199 ◽  
pp. 786-789
Author(s):  
Tie Feng Zhang ◽  
Shu Juan Han ◽  
Jian Wei Gu
Keyword(s):  
Information Sharing ◽  
Semantic Information ◽  
Information Model ◽  
Mapping Method ◽  
Basic Knowledge ◽  
Web Ontology Language ◽  
Ontology Language ◽  
Master Station ◽  
Knowledge Ontology

Based on the basic knowledge of ontology and protégé, and the deficiency of semantic expression in the IEC61850 and IEC61970 Standard, this paper puts forward a mapping method from SCL to CIM, adopting Web Ontology Language OWL to build the semantic information model of SCL and CIM of substation knowledge ontology. In substation model, this mapping method could solve the problem of information sharing and interoperation between digitized substation and dispatch master station, and lay a foundation for further research on fusion of the two standards.

scholarly journals The Effect Analysis of Strain Rate on Power Transmission Tower-Line System under Seismic Excitation

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Li Tian ◽  
Wenming Wang ◽  
Hui Qian
Keyword(s):  
Strain Rate ◽  
Power Transmission ◽  
Seismic Analysis ◽  
Three Dimensional ◽  
Element Model ◽  
Seismic Excitation ◽  
Transmission Tower ◽  
Base Shear ◽  
Effect Analysis ◽  
Line System

The effect analysis of strain rate on power transmission tower-line system under seismic excitation is studied in this paper. A three-dimensional finite element model of a transmission tower-line system is created based on a real project. Using theoretical analysis and numerical simulation, incremental dynamic analysis of the power transmission tower-line system is conducted to investigate the effect of strain rate on the nonlinear responses of the transmission tower and line. The results show that the effect of strain rate on the transmission tower generally decreases the maximum top displacements, but it would increase the maximum base shear forces, and thus it is necessary to consider the effect of strain rate on the seismic analysis of the transmission tower. The effect of strain rate could be ignored for the seismic analysis of the conductors and ground lines, but the responses of the ground lines considering strain rate effect are larger than those of the conductors. The results could provide a reference for the seismic design of the transmission tower-line system.

Research on Construction of Visual Platform of Beijing Power Grid Based on Multi-Technology Fusion

2014 ◽  
Vol 608-609 ◽  
pp. 928-932
Author(s):  
Dong Ya Jin
Keyword(s):  
Data Storage ◽  
Spatial Data ◽  
Power Distribution ◽  
Spatial Information ◽  
Power Transmission ◽  
Power Grid ◽  
Three Dimensional ◽  
Visual Display ◽  
Decision Makers ◽  
Control Measures

The platform uses three-dimensional data modeling, visual simulation and spatial data storage to make the business of regulation center, operation and maintenance center and marketing and management center of Beijing Power grid implement visualized operation, and load the spatial information data, equipment data and operation data of Beijing power grid into the system platform, and the data is displayed with the form of graphic or image, which not only realizes managing space resource data in real three-dimensional scene, but also make the system operator to know the operation state of the system directly, and makes the control measures more effective. And the paper uses virtual reality technology to establish visual scene of ground to realize integrated visual display of power transformation, power transmission and power distribution, which not only makes the producers, managers and decision makers directly master the situation of production line in power station, but also realizes that producers and managers affiliate decision makers to formulate production plan.

Virtual Assembly of Lathe Spindle System

2010 ◽  
Vol 37-38 ◽  
pp. 1625-1628
Author(s):  
Xiao Mei Li ◽  
Hua Jiang Sun ◽  
Li Hui Zhu
Keyword(s):  
Dynamic Simulation ◽  
Power Transmission ◽  
New Products ◽  
Three Dimensional ◽  
Virtual Assembly ◽  
Simulation Software ◽  
Assembly Process ◽  
Spindle System ◽  
Transmission Process ◽  
Relationship Of

On the basis of research on the assembly process of CA6140-type lathe spindle system, the assembly relationship of its components was ascertained. Three-dimensional (3D) components storehouse of the system was established with CAD software UG6.0. On that basis, dynamic simulation software of assembly process and power transmission process of the system was developed. Running the software can reproduce assembly, disassembly and power transmission process. The software can not only be used in the analysis and transformation of old products, but also can be used replacing prototypes in developing of new products.

scholarly journals Environment Perception Technologies for Power Transmission Line Inspection Robots

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Minghao Chen ◽  
Yunong Tian ◽  
Shiyu Xing ◽  
Zhishuo Li ◽  
En Li ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Object Detection ◽  
Transmission Line ◽  
Power Transmission ◽  
Three Dimensional ◽  
Power Transmission Line ◽  
Visual Servo ◽  
Environment Perception ◽  
Control Technologies ◽  
Inspection Robots

With the fast development of the power system, traditional manual inspection methods of a power transmission line (PTL) cannot supply the demand for high quality and dependability for power grid maintenance. Consequently, the automatic PTL inspection technology becomes one of the key research focuses. For the purpose of summarizing related studies on environment perception and control technologies of PTL inspection, technologies of three-dimensional (3D) reconstruction, object detection, and visual servo of PTL inspection are reviewed, respectively. Firstly, 3D reconstruction of PTL inspection is reviewed and analyzed, especially for the technology of LiDAR-based reconstruction of power lines. Secondly, the technology of typical object detection, including pylons, insulators, and power line accessories, is classified as traditional and deep learning-based methods. After that, their merits and demerits are considered. Thirdly, the progress and issues of visual servo control of inspection robots are also concisely addressed. For improving the automation degree of PTL robots, current problems of key techniques, such as multisensor fusion and the establishment of datasets, are discussed and the prospect of inspection robots is presented.

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