10.48321/D1P31K
Anderson Ricardo Justo de Araújo
https://orcid.org/0000-0003-2183-383X
University of Campinas
Modelling conventional and tall transmission towers directly in time domain for electromagnetic transient analysis
DMPHub
2022
FAPESP - São Paulo Research Foundation
https://ror.org/02ddkpn78
en-US
Data Management Plan
<p>This project is a continuation of the doctorate (FAPESP grant 2014/18551), in which a methodology was developed to model transmission towers directly in the time domain taking into<br>account the tower-footing grounding system, real soils, and tower structure. Such parameters are<br>generally omitted in traditional transmission tower modeling. Additionally, tall towers were studied in which no proper model was proposed in the scientific literature. It was found that the<br>models for traditional transmission towers are not suitable for the representation of tall towers.<br>Based on these models, the frequency-response (admittance) of several conventional and tall transmission towers will be computed using the Method of Moments (MoM), considering the <br>grounding system. Frequency-dependent soil electrical parameters, stratified soils, and new grounding topologies and transmission towers will be considered in this project, complementing<br>the results of the doctorate. This admittance is approximated by a rational function and then a lumped electric circuit is synthesized and it can be incorporated in any EMTP-type software for simulating electromagnetic transients directly in the time domain. Thus, the development of a new model offers a precise computation of the overvoltages resulting from lightning strikes at the transmission towers. Furthermore, a reduction in the failure of the insulators, and consequently a reduction in the number of outages from the transmission system due to the occurrence of backflashover can be obtained.</p>
São Paulo Research Foundation
https://doi.org/10.13039/501100001807
https://dmptool.org/api/v2/plans/74039.pdf