Multi-Parameter Optical Monitoring Solution Applied to Underground Medium-Voltage Electric Power Distribution Networks
Author:
Bassan Fabio R.1ORCID, Rosolem Joao B.1ORCID, Floridia Claudio1ORCID, Penze Rivael S.1ORCID, Aires Bruno N.1, Roncolatto Ronaldo A.1, Peres Rodrigo1, Júnior João R. Nogueira1, Fracarolli João Paulo V.1, da Costa Eduardo F.1ORCID, Cardoso Filipe H.1, Pereira Fernando R.1, Furoni Carla C.1, Coimbra Cláudia M.2, Riboldi Victor B.2, Omae Camila2, de Moraes Marcelo2
Affiliation:
1. CPQD—Research and Development Center in Telecommunications, Campinas 13086-902, SP, Brazil 2. CPFL Energia, Campinas 13088-900, SP, Brazil
Abstract
This work presents a multi-parameter optical fiber monitoring solution applied to an underground power distribution network. The monitoring system demonstrated herein uses Fiber Bragg Grating (FBG) sensors to measure multiple parameters, such as the distributed temperature of the power cable, external temperature and current of the transformers, liquid level, and intrusion in the underground manholes. To monitor partial discharges of cable connections, we used sensors that detect radio frequency signals. The system was characterized in the laboratory and tested in underground distribution networks. We present here the technical details of the laboratory characterization, system installation, and the results of 6 months of network monitoring. The data obtained for temperature sensors in the field tests show a thermal behavior depending on the day/night cycle and the season. The temperature levels measured on the conductors indicated that in high-temperature periods, the maximum current specified for the conductor must be reduced, according to the applied Brazilian standards. The other sensors detected other important events in the distribution network. All the sensors demonstrated their functionality and robustness in the distribution network, and the monitored data will allow the electric power system to have a safe operation, with optimized capacity and operating within tolerated electrical and thermal limits.
Subject
Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry
Reference31 articles.
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