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Modelling conventional and tall transmission towers directly in time domain for electromagnetic transient analysis

Grant number: 19/01396-1
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): May 01, 2019
Effective date (End): September 30, 2022
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal researcher:Jose Pissolato Filho
Grantee:Anderson Ricardo Justo de Araújo
Home Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


This project is the continuation of the doctoral research of the candidate, grant FAPESP 2014/18551, which a methodology was developed to obtain transmission tower models directly in time domain, taking into account the tower-footing grounding system, homogeneous soils and the trusses of the structure of the tower. Such parameters are generally omitted from traditional transmission towers models. In addition, giant towers were studied during his doctorate where no model was proposed in the scientific literature. It has been found that the models for traditional transmission towers are not suitable for the representation of giant towers. Based on these models, it will be obtained, using the Method of Moments (MoM), the admittances of several conventional and giant transmission towers, where tower-footing grounding system is connected. Diverse aspects such as: frequency dependence in soil parameters, stratified soils and new ground topologies and transmission towers will be considered in this project, complementing the results of the doctoral research. This admittance is approximated by a rational function in which a discrete electric circuit is obtained and can be inserted into any software for electromagnetic transient simulations. In this way, the development of the model will allow to estimate with more precision the level of the surges resulting from the lightning that may strike on the towers of the transmission lines. Once validated, the complete model is proposed for analysis of the overvoltages that may cause the backflashovers and lead to outages in electric power systems.

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Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SANTOS FERRARI, JULIO CESAR; JUSTO DE ARAUJO, ANDERSON RICARDO; KUROKAWA, SERGIO. Analysis of the voltage profile in transmission lines operating with injected third harmonic voltages. INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, v. 125, . (19/01396-1)
COLQUI, JAIMIS S. L.; DE ARAUJO, ANDERSON R. J.; KUROKAWA, SERGIO; PISSOLATO FILHO, JOSE. Optimization of Lumped Parameter Models to Mitigate Numerical Oscillations in the Transient Responses of Short Transmission Lines. ENERGIES, v. 14, n. 20, . (21/06157-5, 19/01396-1)
GARBELIM PASCOALATO, TAINA FERNANDA; JUSTO DE ARAUJO, ANDERSON RICARDO; CABALLERO, PABLO TORREZ; LEON COLQUI, JAIMIS SAJID; KUROKAWA, SERGIO. Transient Analysis of Multiphase Transmission Lines Located above Frequency-Dependent Soils. ENERGIES, v. 14, n. 17, . (19/01396-1, 20/10141-4)
COLQUI, J. S. L.; DE ARAUJO, A. R. J.; DE SEIXAS, CLAUDINER M.; KUROKAWA, S.; FILHO, J. PISSOLATO. Performance of the recursive methods applied to compute the transient responses on grounding systems. Electric Power Systems Research, v. 196, . (19/01396-1)
PASCOALATO, T. F. G.; DE ARAUJO, A. R. J.; KUROKAWA, S.; FILHO, J. PISSOLATO. Analysis of transient voltages and currents in short transmission lines on frequency-dependent soils. Electric Power Systems Research, v. 194, . (19/14807-0, 19/01396-1)

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