High-Voltage Measurement Infrastructure Based on Optical Technology for Transmission Lines

Mauro Augusto da Rosa (), Clayrton Monteiro Henrique, Gabriel Santos Bolacell, Hermes Irineu Del Monego and Paulo César Rodrigues de Lima Junior
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Mauro Augusto da Rosa: Department of Electrical and Electronic Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil
Clayrton Monteiro Henrique: Department of Electrical and Electronic Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil
Gabriel Santos Bolacell: Department of Electrical and Electronic Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil
Hermes Irineu Del Monego: INESC P&D Brasil, Santos 11055-300, SP, Brazil
Paulo César Rodrigues de Lima Junior: INESC P&D Brasil, Santos 11055-300, SP, Brazil

Energies, 2025, vol. 18, issue 4, 1-16

Abstract: This paper introduces a singular measurement infrastructure for real-time monitoring of transmission lines, applied to a 230 kV section of the Brazilian grid. The system aimed to expand the scope of monitoring variables using new concepts of optical sensing. Thus, variables are captured not only in the electrical domain but also in the mechanical, thermal, and environmental domains through optical technologies and meteorological measurement sensors strategically positioned along the transmission line. The system relies on new features, including a high-voltage polymeric insulator instrumentalized with optical fiber sensors to measure line electrical current, conductor temperature, mechanical strain, and an electro-optical signal processing unit fed by a solar system. The correlations between the monitored variables provide more complete information about what happens in the transmission line compared to the analysis of purely electrical quantities. For instance, the Spearman coefficient of 0.9909 highlights the strong correlation between anchoring force and ambient temperature. This new way of monitoring systems opens the doors to a multivariate power system analysis.

Keywords: real-time monitoring systems; optical technology; transmission line; power systems digitization; multivariate measurements (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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