| Full text | |
| Author(s): |
Asorza, J. E. Guevara
;
Azevedo, Walter L. M.
;
Pissolato Filho, J.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Electric Power Systems Research; v. 247, p. 8-pg., 2025-10-01. |
| Abstract | |
Proper grounding is essential for mitigating the risks associated with lightning strikes on Overhead Transmission Lines (OHTL), as it helps protect equipment and ensures system reliability. To achieve this, various grounding system (G.S) designs can be implemented. This paper introduces two new alternatives to the Conventional grounding system (CGS): the "Compact Grounding System" (CMGS) and the "Improved Compact Grounding System" (IGS). These designs are intended to use a smaller installation area while delivering similar or even superior performance, particularly in managing Ground Potential Rise (GPR) and minimizing backflashovers during lightning strikes. Among the evaluated systems, the IGS demonstrated the best overall performance, achieving lower GPR and reducing the occurrence of backflashovers, even in challenging conditions with high-resistivity soils and high values of lightning current. The study highlights the potential of these innovative designs to improve the safety and efficiency of power transmission systems, especially in space-constrained and high-resistivity environments. (AU) | |
| FAPESP's process: | 24/14472-6 - Lightning study in mixed overhead-underground transmission lines using rigorous formulations for computing earth-return parameters. |
| Grantee: | Jesus Enrique Guevara Asorza |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 21/11258-5 - Engineering Research Center for the Aerial Mobility of the Future (ERC-AMF) |
| Grantee: | Domingos Alves Rade |
| Support Opportunities: | Research Grants - Research Centers in Engineering Program |
| FAPESP's process: | 23/05066-1 - Study of transient overvoltages in underground and submarine transmission lines considering rigorous models for calculating ground-return parameters |
| Grantee: | Jesus Enrique Guevara Asorza |
| Support Opportunities: | Scholarships in Brazil - Master |