Laserpas conducted an inspection of 600 km long power lines in Oltenia region, Romania. The inspection works were ordered by Distributie Energie Oltenia. In the territory inspected, Laserpas identified multiple objects that posed imminent danger to power grids and the associated hazards that may bring about serious injuries or even fatalities.
In order to receive the most accurate results, during the inspection the company used such highly advanced technologies as photogrammetric scanning with nadir as well as oblique cameras which were integrated into a piloted helicopter. In addition to dangerous buildings, Laserpas identified trees which pose severe danger to nearby power lines as well emergency vegetation that needs to be dealt with as soon as possible. In addition, company experts detected bodies of water underlying power lines which may cause severe damage to the environment as well as towers covered in rust and broken insulators.
About Distributie Energie Oltenia
Established back in 2007 as the legal successor of Electrica Oltenia, Distributie Energie Oltenia was put in charge of power distribution in accordance with the European legal requirements (Unbundling). Currently, the company provides electricity to 1,427,035 customers across 7 counties in the region of Oltenia, Romania. Distributie Energie Oltenia is strongly focused on improving the level of safety in the distribution of electric power whilst significantly reducing energy losses.
Laserpas carried out a power grid inspection pilot project for one of the national transmission operators in the Baltics. Having inspected a 330 kV power grid line spanning over 136,17 km, the company uncovered over 1500 suspicious and dangerous trees, as well as more than 850 buildings threatening power line safety.
The team employed several unique technologies including lidar scanning and nadir photography, as well as oblique cameras which were integrated into a piloted helicopter. All information collected from the corridor was digitalized and converted into territorial maps portraying layers of classified objects (conductors, poles, trees, other vegetation, buildings, water, roads, etc.). These different layers assisted in identifying a wider scope of potential risks. The team also produced detailed 3D images generated from laser data. These models were later used to develop line profiles and calculate risks.
Project results revealed the extensive Laserpas power line inspection capabilities. The use of high zoom oblique cameras allowed the team to capture very specific details, including isolator cracks and damage of the grounding wire. Despite the relatively good shape of the line, Laserpas specialists detected a number of safety threats within the line corridor. This clearly indicates that every power grid is in dire need of constant monitoring.
Following the inspection, Laserpas team uncovered several startling findings: 413 dangerous and 1199 suspicious trees as well as 612 530 sq m of dangerous vegetation. Furthermore, the team recorded 875 buildings located in the officially forbidden zones. This is considered to be a very serious security threat to both the power line operator and inhabitants of the buildings. The photographs captured with the oblique camera also disclosed hazardous errors such as damaged insulators, cracked concrete and traces of soil erosion.