scholarly journals ABB and Siemens test subsea power grids: Putting a power-distribution station on the ocean floor could allow more raw materials to be processed down there - [News]

IEEE Spectrum ◽  
2019 ◽  
Vol 56 (6) ◽  
pp. 10-11
Keyword(s):  
Power Distribution ◽  
Raw Materials ◽  
Power Grids ◽  
Ocean Floor ◽  
Distribution Station

scholarly journals Investigation of the Power Grid Accuracy by CMOS Transistor Network using Matlab/ Simulink

2018 ◽  
Vol 25 (3) ◽  
pp. 19-23
Author(s):  
Shahir Fleyeh Nawaf ◽  
Mohammed Khalaf Hussein ◽  
Sabah Sadeem ◽  
Shaker Mahmud Faysal
Keyword(s):  
Power Distribution ◽  
Power Grid ◽  
Power Grids ◽  
Power Networks ◽  
Complex Issue ◽  
Matlab Simulink ◽  
Cmos Transistor ◽  
Technical Issues ◽  
System On A Chip ◽  
The Ideal

The design and analysis of the power distribution and supply system on a chip is a complex issue. The ideal network consists of millions of transistors, which act as energy consumers. This large number makes them complex in terms of design and analysis. Building typical algorithms with logical gates and working automatically is the best way to solve the problem of power grid complexity. In this research, it was proposed to design a new model for consumers on the basis of effective resistance. passive elements were used only in this model and based on the actual resistance and capacity of the logical gates. Consumers and power grids can adopt computational physics methods and consider each group of consumers in each subnet as within total circuits. Emphasis is placed on the interaction between consumers for energy distribution network and energy supply. Using Matlab/ Simulink, accuracy of the system is verified to determine the technical issues related to the operation of the system for power networks.

scholarly journals A comparative study on common power flow techniques in the power distribution system of the Tehran metro

2018 ◽  
Vol 12 (4) ◽  
pp. 244-250 ◽  
Author(s):  
Mohammad Ghiasi
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Flow Analysis ◽  
Electrical Energy ◽  
Power Grids ◽  
Power Distribution System ◽  
Detailed Assessment ◽  
Flow Techniques

Overall, a power-flow study is a steady-state assessment whose goal is to specify the currents, voltages, and real and reactive flows in a power system under a given load conditions. This paper presents a comparison of common power flow techniques in the Tehran metro power distribution system at the presence of non-linear loads. Moreover, a modelling, simulation and analysis of this power distribution system is implemented with the Electrical Transient Analyser Program (ETAP) software. In this assessment, common power flow techniques including the Newton-Raphson (NR), Fast Decoupled (FD), and Accelerated Gauss-Seidel (AGS) techniques are provided and compared. The obtained results (total generation, loading, demand, system losses, and critical report of the power flow) are analysed. In this paper, we focus on the detailed assessment and monitoring by using the most modern ETAP software, which performs numerical calculations of a large integrated power system with fabulous speed and also generates output reports. The capability and effectiveness of the power flow analysis are demonstrated according to the simulation results obtained with ETAP by applying it to the power distribution system of the Tehran metro. In developing countries such as Iran, off-line modelling and simulation of power grids by a powerful software are beneficial and helpful for the best usage of the electrical energy.

scholarly journals Research on typical application in distribution station area

2021 ◽  
Vol 2087 (1) ◽  
pp. 012022
Author(s):  
Dan Lu ◽  
Yang Liu ◽  
Jungang Li ◽  
Linjuan Zhang ◽  
Changqing Xu ◽  
...  
Keyword(s):  
Power Distribution ◽  
Impedance Analysis ◽  
Maintenance Management ◽  
Distribution Transformer ◽  
Typical Application ◽  
Topology Identification ◽  
Operation And Maintenance ◽  
Three Phase ◽  
Distribution Station ◽  
Intelligent Distribution

Abstract The traditional power distribution station area lacks advanced functions for power distribution, and it is not conducive to operation and maintenance management. In order to improve the intelligent level of the distribution station area, it is constructed around with the intelligent distribution transformer terminal. Take intelligent distribution transformer terminal as the centre, the schemes of some typical applications, such as topology identification, line impedance analysis and three-phase unbalanced governance, are researched and designed to support the construction of distribution station area.

Seismic Performance Assessment of an Ultra-High–Voltage Power Transformer

2019 ◽  
Vol 35 (1) ◽  
pp. 423-445 ◽  
Author(s):  
Guo-Liang Ma ◽  
Qiang Xie ◽  
Andrew Whittaker
Keyword(s):  
Seismic Performance ◽  
High Voltage ◽  
Power Distribution ◽  
Distribution Systems ◽  
Power Transformer ◽  
Active Regions ◽  
Power Grids ◽  
Power Distribution Systems ◽  
Seismic Performance Assessment ◽  
Ultra High Voltage

Ultra-high–voltage (UHV) power distribution systems are seeing increased use in the seismically active regions of developing world, including China, as backbone power grids are being built out over long distances. This paper presents a study of the seismic performance of a UHV power transformer. Construction details for a typical Chinese UHV power transformer are described. The seismic behavior of the UHV power transformer is evaluated numerically, including calculation of modal properties and response to design basis earthquake shaking. The amplification of ground motion to the points of attachment of the seismically vulnerable transformer bushings is characterized. Alternative configurations for the sidewall-mounted turrets are investigated to mitigate the dynamic response of the 1,100-kV bushing.

scholarly journals Analysis of the impact of electric vehicles on the power grid

2018 ◽  
Vol 44 ◽  
pp. 00065 ◽  
Author(s):  
Leszek Kasprzyk ◽  
Robert Pietracho ◽  
Karol Bednarek
Keyword(s):  
Electric Vehicles ◽  
Transmission Lines ◽  
Power Distribution ◽  
Power Grid ◽  
Power Grids ◽  
Electric Vehicle Charging ◽  
Voltage Drops ◽  
Charging Stations ◽  
The Impact ◽  
Methods Of Control

The paper presents problems related to the impact of electric vehicles connected to the power grid on energy parameters. Basic methods of control in power grids were discussed and results of the simulation were presented with regards to the power distribution, voltage drops and losses in the transmission lines. The simulation was conducted based on the example of CIGRE 11, to which electric vehicle charging stations were connected in several selected points, with the possibility of energy release into the grid. The obtained results were compared for the simulation conducted in two variants – without the connected electric vehicles and with them. The obtained results were analyzed and commented upon.

scholarly journals A Chronological Literature Review of Electric Vehicle Interactions with Power Distribution Systems

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 3016
Author(s):  
Andrés Arias-Londoño ◽  
Oscar Danilo Montoya ◽  
Luis Fernando Grisales-Noreña
Keyword(s):  
Power Systems ◽  
Electricity Markets ◽  
Power Distribution ◽  
Distribution Systems ◽  
Demand Management ◽  
Distribution Networks ◽  
Power Grids ◽  
System Stability ◽  
Systematic Classification ◽  
Vehicle To Grid

In the last decade, the deployment of electric vehicles (EVs) has been largely promoted. This development has increased challenges in the power systems in the context of planning and operation due to the massive amount of recharge needed for EVs. Furthermore, EVs may also offer new opportunities and can be used to support the grid to provide auxiliary services. In this regard, and considering the research around EVs and power grids, this paper presents a chronological background review of EVs and their interactions with power systems, particularly electric distribution networks, considering publications from the IEEE Xplore database. The review is extended from 1973 to 2019 and is developed via systematic classification using key categories that describe the types of interactions between EVs and power grids. These interactions are in the framework of the power quality, study of scenarios, electricity markets, demand response, demand management, power system stability, Vehicle-to-Grid (V2G) concept, and optimal location of battery swap and charging stations.

scholarly journals An ICT Architecture for Managed Charging of Electric Vehicles in Smart Grid Environments

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
S. Bohn ◽  
M. Agsten ◽  
O. Waldhorst ◽  
A. Mitschele-Thiel ◽  
D. Westermann ◽  
...  
Keyword(s):  
Smart Grid ◽  
Electric Vehicles ◽  
Power Distribution ◽  
Smart Grids ◽  
Power Grids ◽  
Distribution Grid ◽  
Grid Environments ◽  
Information And Communication ◽  
Increasing Demand ◽  
Near Future

Growing shortage of fossil resources and an increasing demand of individual mobility worldwide require technology alternatives to existing mobility solutions. Electric vehicles (EVs) as one possible solution have moved into the focus of research and development. To maximize the positive environmental effect of EVs, it is proposed to charge them with respect to the availability of renewable energies. As the number of EVs will grow in the near future, their impact on the power distribution grid is no longer neglectable. Related research shows that unmanaged charging of EVs could result in overload situations or voltage instabilities. To overcome this, methods are proposed to manage the charging process holistically. Herein EVs become substantial elements of intelligent power grids (Smart Grids). As of today, research in the area of Smart Grids focuses mainly on either energy aspects or communication aspects while neglecting the interoperability of energy and communication related aspects. In this paper, an insight into Information and Communication Technology (ICT) aspects with respect to Managed Charging of EVs in Smart Grid environments will be given. Based on the use case of Managed Charging, requirements will be analyzed, results will be derived, and ICT solutions will be proposed with a set of recommendations for Smart Grid architectures.

scholarly journals A Case Study of Reliability and Performance of the Electric Power Distribution Station Based on Time between Failures

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Adam Baharum ◽  
Faris Mahdi Alwan ◽  
Saad Talib Hasson
Keyword(s):  
Power Systems ◽  
Power Distribution ◽  
Study Data ◽  
Electric Power Distribution ◽  
Distribution Company ◽  
In Series ◽  
Equipment Failures ◽  
Distribution Station ◽  
And Performance

This paper presents an algorithm for estimating the performance of high-power station systems connected in series, parallel, and mixed series-parallel with collective factor failures caused by any part of the system equipment. Failures that occur frequently can induce a selective effect, which means that the failures generated from different equipment parts can cause failures in various subsets of the system elements. The objectives of this study are to increase the lifetime of the station and reduce sudden station failures. The case study data was collected from an electricity distribution company in Baghdad, Iraq. Data analysis was performed using the most valid distribution of the Weibull distribution with scale parameterα= 1.3137 and shape parameterβ= 94.618. Our analysis revealed that the reliability value decreased by 2.82% in 30 days. The highest critical value was obtained for components T1, CBF5, CBF7, CBF8, CBF9, and CBF10and must be changed by a new item as soon as possible. We believe that the results of this research can be used for the maintenance of power systems models and preventive maintenance models for power systems.

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