scholarly journals Modeling Grounding Systems for Electromagnetic Compatibility Analysis

2021 ◽  
Author(s):  
Antonio Carlos S. Lima ◽  
Pedro H.N. Vieira ◽  
Marco Aurélio O. Schroeder ◽  
Rodolfo Antônio R. Moura
Keyword(s):  
Communication Networks ◽  
Power Distribution ◽  
Smart Grids ◽  
Electromagnetic Compatibility ◽  
Electromagnetic Coupling ◽  
Power Networks ◽  
Compatibility Analysis ◽  
Electric Power Networks ◽  
Grounding Grids ◽  
The One

In recent years, the development of smart grids for power distribution and the increasing usage of 5G communication networks have played a large impact on the resilience and reliability of grounding systems. Unexpected electromagnetic coupling between a communication tower and the one used for the electric power networks may pose a threat to the suitable performance of either system as one must assure that electromagnetic compatibility together with unexpected transient issues is within reasonable parameters. This requires wideband modeling of a grounding system, typically carried out using numerical approaches based on the Method of Moments. This modeling is implied in numerous segments to represent the conductors involved and the numerical solution of a double integral for each one of these segments. The modified nodal formulation used to obtain system voltages and branch currents is first solved in the frequency domain, leading to a heavy computational burden and a time-consuming simulation. This chapter briefly reviews the procedure used to model grounding grids and presents some results to illustrate the typical behavior. Afterward, a more complex system comprising a case of electromagnetic coupling is then analyzed to illustrate the impact of nearby grounding grids.

Effect of Power Line Conductor Resistance-to-Reactance Ratio on Voltage Magnitude during Two-Phase Faults at Electric Energy Grids

2014 ◽  
Vol 792 ◽  
pp. 316-321
Author(s):  
Marios Moschakis ◽  
John Prousalidis ◽  
Antonis G. Tsikalakis ◽  
Emmanuel S. Karapidakis
Keyword(s):  
Electric Power ◽  
Power Distribution ◽  
Electric Energy ◽  
Power Line ◽  
Power Networks ◽  
Two Phase ◽  
Electric Power Distribution ◽  
Mathematical Expressions ◽  
Impedance Characteristics ◽  
Electric Power Networks

This paper deals with the effect of power line impedance characteristics on the retained voltage magnitude after a two-phase fault at electric power distribution or transmission networks. Specifically, the effect of resistance-to-reactance (R/X) ratio of power line conductors or cables on voltage magnitude during two-phase faults is studied with analytical mathematical expressions. The basic aim of this investigation is to create a tool for the automatic recognition of the type and the location of faults on electric power networks.

Feasibility Sets for Steady-State Loads in Electric Power Networks

1982 ◽  
Vol PER-2 (1) ◽  
pp. 22-23
Author(s):  
Pierre Dersin ◽  
Alexander H. Levis
Keyword(s):  
Steady State ◽  
Electric Power ◽  
Power Networks ◽  
Electric Power Networks

scholarly journals Transmission Rights and Market Power on Electric Power Networks

2000 ◽  
Vol 31 (3) ◽  
pp. 450 ◽  
Author(s):  
Paul L. Joskow ◽  
Jean Tirole
Keyword(s):  
Electric Power ◽  
Market Power ◽  
Power Networks ◽  
Electric Power Networks ◽  
Transmission Rights

scholarly journals Configurations of Aromatic Networks for Power Distribution System

2020 ◽  
Vol 12 (10) ◽  
pp. 4317
Author(s):  
K. Prakash ◽  
F. R. Islam ◽  
K. A. Mamun ◽  
H. R. Pota
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Smart Grids ◽  
Sustainable Energy ◽  
Distribution Network ◽  
Geographical Location ◽  
Distribution Networks ◽  
Self Healing ◽  
Power Distribution System ◽  
Improve Energy Efficiency

A distribution network is one of the main parts of a power system that distributes power to customers. While there are various types of power distribution networks, a recently introduced novel structure of an aromatic network could begin a new era in the distribution levels of power systems and designs of microgrids or smart grids. In order to minimize blackout periods during natural disasters and provide sustainable energy, improve energy efficiency and maintain stability of a distribution network, it is essential to configure/reconfigure the network topology based on its geographical location and power demand, and also important to realize its self-healing function. In this paper, a strategy for reconfiguring aromatic networks based on structures of natural aromatic molecules is explained. Various network structures are designed, and simulations have been conducted to justify the performance of each configuration. It is found that an aromatic network does not need to be fixed in a specific configuration (i.e., a DDT structure), which provides flexibility in designing networks and demonstrates that the successful use of such structures will be a perfect solution for both distribution networks and microgrid systems in providing sustainable energy to the end users.

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