June 2015 – Newsletter

May - June 2015



Albatroz Engineering @ CIRED 2015 in Lyons

Encuentro Regional Iberoamericano de CIGRE [ERIAC] - Meeting of the Iberian-American Region of CIGRÉ in Argentina

   - Implementing alternatives to line inspection by helicopter

   - Multi-layer visualization and space-time correlation

Albatroz Engineering in Spanish

   - Spanish interns at Albatroz




Read more from June 2015 Newsletter .


To receive the full version of our newsletter, please contact us through the e-mail info@albatroz.engineering 

LiDAR-based Inspection Data Analysis to Calculate Vegetation Approximation Rate to OHLs

LiDAR-based Inspection Data Analysis to Calculate Vegetation Approximation Rate to OHLs

by Rita Lopes1, Sandra Cordeiro1, Francisco Azevedo2, João Gomes Mota1

1 Albatroz Engenharia, Portugal, 2 NOVA Laboratory for Computer Science and Informatics, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Portugal

presented at IT4Energy symposium, Lisbon, April 2015.



Environmental factors are responsible for most of the over-head lines issues, and a significant part of them is related with vegetation, mostly on dis-tribution grids. Maintenance is the key to reduce the occurrence of vegetation related events, but it has a significant impact on the cost of power line asset management and thus must be optimized. This work proposes a method to cal-culate vegetation approximation rates, based on LiDAR acquired during air-borne inspections, in order to optimize maintenance processes and reduce the impact of this activity on the local biodiversity.


Maintenance; OHL; inspection; LiDAR; Vegetation Management


Advances in Vegetation Management to improve Reliability

Advances in Vegetation Management to improve Reliability

by J. Gomes-Mota, F. Azevedo1, J. Casaca2, V. Almeida, N. Pinho da Silva, L. Campos Pinto2

1CENTRIA, Faculdade de Ciências e Tecnologia Universidade Nova de Lisboa, 2REN - Rede Eléctrica Nacional

presented by Vítor Almeida at International Conferee on Condition Monitoring, Diagnosis and Maintenance - CMDM 2012, September 2-5, 2013, Bucharest, Romania, cmdm2013.org .


Incidents associated to vegetation in the Portuguese transmission grid have decreased from one of the major causes to negligible impact in less than a decade. This was due to the cumulative effect of four independent, yet concurrent, programs: 1) routine clearance inspections with LiDAR, extended to the whole grid, provided quantitative measures associated with degrees of severity for each hazardous tree; 2) classification of the right-of-way according to land use, density of vegetation and classification of tree growth rates; 3) targeted actions consisting of tree trimming, pruning and cutting with priorities set by severity and criticality of each Over Head Line [OHL]; 4) public policies to create secondary routes to remove biomass from the forests that mandated the Transmission System Operator [TSO] clear paths around OHL.

The Portuguese TSO (REN – Rede Eléctrica Nacional) operates a grid of 8443km of OHL with three voltage levels and incurs significant investment and operation costs to achieve and maintain vegetation incidents at a very low level. Thus, a program to supersede existing blind systematic actions with probability based approaches leading to risk based management was launched. This combines information from the four programs with environmental, reliability and asset management data with third party information. Given that the outcome (incidents due to vegetation) is already at an optimal level, the current research will try to optimize the process as well


Vegetation management, LidAR inspections, Classification of right-of-way, Biomass, Risk based management, Inspection, Maintenance Optimisation.


View from advanced vegetation management practices encouraged by REN, the Portuguese TSO.

Prototipo para la Monitorización de la Infraestructura Ferroviaria utilizando Sensores Lidar, Imagen de Video y GPS: Primeros Resultados (ES)

Prototipo para la Monitorización de la Infraestructura Ferroviaria utilizando Sensores Lidar, Imagen de Video y GPS: Primeros Resultados

por F. Goméz Bravo1, A. Vale2, J. Gomes-Mota2

1 Departamento de Ingeniería Electrónica, Sistemas Informáticos y Automática.
Escuela Politécnica Superior, Universidad de Huelva. Carretera de Palos-La Rábida s/n. 21071 Huelva España.

2 ALBATROZ Engenharia, Investigação, Desenvolvimento e Inovação,
Rua da Conceição 60,1º P-1100-154 Lisboa, Portugal

apresentado nas XXVIII Jornadas de Automática of Universidad de Huelva, Spain, 5-7 Setembro, 2007. O seminário foi organizado Escuela Politécnica Superior e pelo Departamento de Ingeniería Electrónica y Automática.

Artigo em Espanhol, publicado nos relatórios das XXVIII Jornadas de Automática. ISBN: 978-84-690-749-8.



Este artículo presenta resultados experimentales sobre técnicas de monitorización del estado de la infraestructura ferroviaria. Los datos fueron obtenidos durante unos ensayos realizados con el tren auscultador TALGO en líneas de alta velocidad de ADIF. La monitorización se realizó en tiempo real utilizando datos provenientes de sensores láser, una cámara de video y un receptor GPS.


Sistemas de percepción, Fusión sensorial, Reconstrucción 3D, Segmentación de imágenes, Infraestructura ferroviaria.