Energy Infrastructure

In the course of power line documentation, high-voltage power lines (mainly 110 kV, 220 kV and 380 kV), their alignements and pylons and sometimes the access routes are surveyed and sheduled. Clients for this are mostly pipe operators and energy supply enterprises who need a suitable documentation of their stock.

The survey is usually performed by means of tachymetric recordings in combination with RTK-GPS-surveys. Alignement maps are created from the recordings.In addition to the characteristic featues of the power line also contain the objects located along the the alignement within the protection area (up to 50m to the left and to the right of the pipe) as well as internal and cadastral information. Further results are length profiles of the pipes with a simplified plane maps and projection maps. These length profiles contain a representation of the current rope slack in dependence of the temperature and the evaluated original tensile strength of the tag line.

In the course of surveying pylons, certain details like isolators and so on are shown in a picture of the pylon. The describing part of the power line documentation includes an intersection list, wich contains all crossings with other lines, over- and undergrund, in tabular form and a list of properties wich shows the the basis for the definition of servitudes.

Frequently, airborne laser scanning (ALS) is used to quickly and easily register the terrain surface. For the purpose of referencing the scan recordings, control point measurements and the determination of the GPS-transformation parameters are required.

For planning and aligning of new power lines we make alignement studies, the flight for the purpose of orthophoto production, the preperation of submission documents for administrative procedures and control surveys during and after the execution of construction.

Range Of Services

Surveying and manufacturing of alignement maps for 110kV-, 220kV- and 380kV-high-voltage power lines
Creation of longitudinal profiles
Collection and implementation of internals und cadastral informations
Surveying of spezila power line points
Regulation of the rope slack in dependence of the air- and rope temperature
Calculation of original tensile strengths of tag lines
Recording and documentation of pylons and portals
Photographic and mapped documentation of pylons
Creation of access road maps to the pylons
Surveying of control points for alignement flights
Evaluation and incorporation of aerial surveys (ALS – Airborn Laser Scanning, photogrammetic recordings, digital orthophotos)
surveying works for new aligning of high-tention lines – alignement investigations
Plan design and continuation in CAD

KOPA disposes with its highly qualified employees a lot of know-how, in the area of line documentation and covers the entire performance spectrum.

The recording of lines is often carried out under difficult conditions and with technical challenges (conduit in the mountains, weather conditions, etc.). An encoded tachymetric survey and RTK- GPS-surveyings are the standard methods in this case. A digital terrain model- DGM, made by Airborne Laser Scanning – ALS, complements this recordings.

The numerical evaluation and plan creation (alignement maps, longitufdinal and cross sections, pole images, intersection list, etc. ) happens automatically with encoded field data and special geodetic software under combination of all available data sources and information from filed admission, orthophoto, airborne laser scanning, internal- and cadastre evaluations and the describing material data of the high-tension power lines.

Services like e.g. control point measurement for ALS are as well as the alignement in line construction in the repertioire of KOPA.