scholarly journals Harmonic Mitigation Techniques Applied to Power Distribution Networks

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Hussein A. Kazem
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
System Analysis ◽  
Distribution Networks ◽  
Power Distribution Systems ◽  
Power Distribution Networks ◽  
Mitigation Techniques ◽  
Harmonic Mitigation ◽  
Mitigation Methods

A growing number of harmonic mitigation techniques are now available including active and passive methods, and the selection of the best-suited technique for a particular case can be a complicated decision-making process. The performance of some of these techniques is largely dependent on system conditions, while others require extensive system analysis to prevent resonance problems and capacitor failure. A classification of the various available harmonic mitigation techniques is presented in this paper aimed at presenting a review of harmonic mitigation methods to researchers, designers, and engineers dealing with power distribution systems.

scholarly journals Factors Affecting the Design and Economic Operation of Distribution Networks and Its Investigation in the 0.4 KV Distribution Network of Ghazni City

2021 ◽  
Vol 3 (27) ◽  
pp. 101-115
Author(s):  
Massoud Danishmal ◽  
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Network Reliability ◽  
Distribution Network ◽  
Distribution Networks ◽  
Electricity Demand ◽  
Power Distribution Systems ◽  
Factors Affecting ◽  
Economic Operation ◽  
Selection Of

The design of power distribution systems should be such that it can technically respond to the increase in electricity demand properly and economically, optimally designed and high network reliability. In order to respond to the increase in electricity demand, load forecasting must be done so that in addition to providing the electricity needed by customers, expansion of power generation centers, expansion of substations, expansion of transformer stations and selection of their appropriate location can be done optimally. In this article, we first examine the definitions and factors that are technically and economically effective in the economic design of energy distribution systems. And in the next stage, we will see whether these above-mentioned effective factors are considered in the 0.4 kV distribution network of Ghazni city or not.

scholarly journals A Heuristic Approach for Optimal Planning and Operation of Distribution Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-19 ◽  
Author(s):  
Khalid Mohammed Saffer Alzaidi ◽  
Oguz Bayat ◽  
Osman N. Uçan
Keyword(s):  
Optimization Model ◽  
Power Distribution ◽  
Distribution Systems ◽  
Heuristic Algorithms ◽  
Imperialist Competitive Algorithm ◽  
Distribution Networks ◽  
Power Distribution Systems ◽  
Voltage Deviation ◽  
Efficient Planning ◽  
Planning And Operation

The efficient planning and operation of power distribution systems are becoming increasingly significant with the integration of renewable energy options into power distribution networks. Keeping voltage magnitudes within permissible ranges is vital; hence, control devices, such as tap changers, voltage regulators, and capacitors, are used in power distribution systems. This study presents an optimization model that is based on three heuristic approaches, namely, particle swarm optimization, imperialist competitive algorithm, and moth flame optimization, for solving the voltage deviation problem. Two different load profiles are used to test the three modified algorithms on IEEE 123- and IEEE 13-bus test systems. The proposed optimization model uses three different cases: Case 1, changing the tap positions of the regulators; Case 2, changing the capacitor sizes; and Case 3, integrating Cases 1 and 2 and changing the locations of the capacitors. The numerical results of the optimization model using the three heuristic algorithms are given for the two specified load profiles.

scholarly journals Power Scalable Bi-Directional DC-DC Conversion Solutions for Future Aircraft Applications

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5470
Author(s):  
Antonio Lamantia ◽  
Francesco Giuliani ◽  
Alberto Castellazzi
Keyword(s):  
High Voltage ◽  
Power Distribution ◽  
Distribution Systems ◽  
Low Voltage ◽  
Leading Edge ◽  
Wide Band ◽  
Distribution Networks ◽  
Significant Degree ◽  
Energy Storage Devices ◽  
Power Distribution Networks

With the introduction of the more electric aircraft, there is growing emphasis on improving overall efficiency and thus gravimetric and volumetric power density, as well as smart functionalities and safety of an aircraft. In future on-board power distribution networks, so-called high voltage DC (HVDC, typically +/−270VDC) supplies will be introduced to facilitate distribution and reduce the associated mass and volume, including harness. Future aircraft power distribution systems will also very likely include energy storage devices (probably, batteries) for emergency back up and engine starting. Correspondingly, novel DC-DC conversion solutions are required, which can interface the traditional low voltage (28 V) DC bus with the new 270 V one. Such solutions presently need to cater for a significant degree of flexibility in their power ratings, power transfer capability and number of inputs/outputs. Specifically, multi-port power-scalable bi-directional converters are required. This paper presents the design and testing of such a solution, addressing the use of leading edge wide-band-gap (WBG) solid state technology, especially silicon carbide (SiC), for use as high-frequency switches within the bi-directional converter on the high-voltage side.

Autonomous Neural Models for the Classification of Events in Power Distribution Networks

2013 ◽  
Vol 24 (5) ◽  
pp. 612-622 ◽  
Author(s):  
André E. Lazzaretti ◽  
Vitor H. Ferreira ◽  
Hugo Vieira Neto ◽  
Rodrigo J. Riella ◽  
Julio S. Omori
Keyword(s):  
Power Distribution ◽  
Distribution Networks ◽  
Neural Models ◽  
Power Distribution Networks

Criticality-Based Designs of Power Distribution Systems

2021 ◽  
pp. 150-175
Author(s):  
Sadeeb Simon Ottenburger
Keyword(s):  
Power Distribution ◽  
Smart Grids ◽  
Distribution Systems ◽  
Large Scale ◽  
Distribution Network ◽  
Distribution Networks ◽  
Urban Resilience ◽  
Power Distribution Networks ◽  
Adequate Provision ◽  
Advanced Metering

The generation and supply of electricity is currently about to undergo a fundamental transition that includes extensive development of smart grids. Smart grids are huge and complex networks consisting of a vast number of devices and entities which are connected with each other. This fact opens new variations of disruption scenarios which can increase the vulnerability of a power distribution network. However, the network topology of a smart grid has significant effects on urban resilience particularly referring to the adequate provision of infrastructures whereby the way in which a distribution network is divided into interconnected microgrids is of particular importance. Such decompositions enable the systematic protection of important infrastructures and furthermore allow new forms of resilient power supply avoiding large-scale power blackouts. Therefore, the authors introduce a concept of criticality adapted to a power system relying on an advanced metering infrastructure and thereby propose a metric for an integrated resilience assessment of power distribution networks.

scholarly journals Optimized Surge Arrester Allocation Based on Genetic Algorithm and ATP Simulation in Electric Distribution Systems

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4110 ◽  
Author(s):  
Gabriel Vianna Soares Rocha ◽  
Raphael Pablo de Souza Barradas ◽  
João Rodrigo Silva Muniz ◽  
Ubiratan Holanda Bezerra ◽  
Igor Meireles de Araújo ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Power Distribution ◽  
Distribution Systems ◽  
Fitness Function ◽  
Distribution Networks ◽  
Power Distribution Networks ◽  
Electrical Grid ◽  
Surge Arresters ◽  
Electric Power Distribution ◽  
Lightning Discharges

The efficient protection of electric power distribution networks against lightning discharges is a crucial problem for distribution electric utilities. To solve this problem, the great challenge is to find a solution for the installation of surge arresters at specific points in the electrical grid and in a sufficient quantity that can ensure an adequate level of equipment protection and be within the utility’s budget. As a solution to this problem of using ATP (Alternative Transient Program), this paper presents a methodology for optimized surge arrester allocation based on genetic algorithm (GA), with a fitness function that maximizes the number of protected equipment according to the financial availability for investment in surge arresters. As ATP may demand too much processing time when running large distribution grids, an innovative procedure is implemented to obtain an overvoltage severity description of the grid and select only the most critical electric nodes for the incidence of lightning discharges, in the GA allocation procedure. The results obtained for the IEEE-123 bus electric feeder indicate a great reduction of flashover occurrence, thus increasing the equipment protection level.

scholarly journals Contribution of Corporate Systems for Fault Location in Power Distribution Networks

2020 ◽  
Author(s):  
Gustavo Travassos ◽  
Danilo De Souza Pereira ◽  
Carlos Frederico Meschini Almeida ◽  
Luiz Henrique Leite Rosa ◽  
Nelson Kagan ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Fault Location ◽  
Short Circuit ◽  
Travelling Waves ◽  
Distribution Networks ◽  
Power Distribution Networks ◽  
Phone Calls ◽  
Current Scenario ◽  
Power Utilities

In power distribution systems, short-circuit events imply long service response time, affecting the quality of service. Although many research works propose fault location methodologies, which are based on meta-heuristics, artificial intelligence and travelling waves, most power utilities do not have the data requested by such approaches. Consequently, maintenance crews locate faults through field searches, considering the operation of protection devices and affected customers' phone calls, characterizing a procedure that may last some hours. This work proposes a practical fault location methodology, considering the current scenario of few metering data concerning the short-circuit events. Based on case studies results, the proposed methodology is considered effective. It may be executed in few seconds and leads to satisfactory results.

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