Offer
Transmission and distribution lines
In the field of electrical overhead and cable lines of medium, high and extra-high voltage, we develop complete project documentation including: concepts, feasibility studies, functional-utility programmes, building designs, detailed designs and as-built documentation.
Within the scope of design works we perform:
- technical audits of lines including inventory and technical condition assessment
- building designs and detailed designs of new lines
- designs of lattice towers structures including 1:1 tests at testing stations
- analyses of the possibilities of upgrading of the transmission capacity of existing lines taking into account economic analysis and designs of phase conductor replacement with high-temperature conductors in any technology, including GAP (GTACSR), ACSS, ACCR®, ACCC® or other
- calculations of electrical parameters of lines, power distribution in the network, short circuit current flow in earthwires and earthing, analysis of surges in cable lines
- breakdown removal projects – immediate restoration of infrastructure projects (Emergency Restoration Systems)
- optimisation of technical solutions taking into account economic aspects and the technical standards of network owners
- calculations of the current-carrying capacity of HV and LV lines, taking into account thermal resistivity tests of the soil, optimisation of the selection of cable system components (cross-sections of the phase conductor and a sheath, method of connecting sheaths)
- design of complex grounding systems in multilayer soils
- analyses of the impact of electromagnetic fields in the vicinity of overhead and cable lines and their effect on third-party infrastructure facilities, e.g. telecommunications networks, low-voltage networks, steel pipelines, including transmission gas pipelines, central heating networks, railway traffic control circuits, development of concepts for remedial measures in the event of exceeding allowable impact values
- comprehensive analyses and management of vegetation within the overhead lines
- reviews of projects carried out by external design offices regarding the line infrastructure owned by Polskie Sieci Elektroenergetyczne
During the execution of our projects we use the following methods and tools:
- laser scanning (LiDAR)
- photogrammetry
- spatial thermal imaging measurements
- spatial electromagnetic field measurements
- unmanned aerial vehicles (drones)
We provide:
- surveying services
- preparation of necessary geological and geotechnical expert opinions
- provision of specialists to obtain the right of way
- carrying out planning works
- expert opinions on environmental protection
- comprehensive inter-branch coordination of projects
- technical and legal consultancy
- supervision of the execution of works on site
- documentation with the use of modern software such as: PLS-CADD, PLS-Tower, CYMCAP, Auto CAD and others, as well as investment reporting with the use of spatial information systems software (ArcGIS®, QGIS®)
- creation of project documentation using the BIM method
Power line design
The construction of power lines is an extremely complex and multi-faceted process. Transmission lines play a vital role in the power grid, and the proper design of overhead and cable lines is crucial for the entire power system. The siting and proper routing of transmission and distribution lines affects the subsequent cost and efficiency of energy transmission, and the feasibility of further infrastructure investments in particular area.
The design of transmission and distribution lines is not an easy task and is subject to numerous constraints. The design of a power line can be affected by regulations such as:
- construction law
- energy law
- national and European technical standards
- environmental law
Cable line design – how does it work?
The construction process of a new power line should be preceded by stages such as the preparation of detailed documentation or necessary expert opinions, the development of a concept and feasibility study, the preparation of a construction and detailed design, and the creation of appropriate project documentation. All these parts cannot, of course, be carried out in isolation from the area and conditions of the site on which the subsequent construction work is to be carried out. To this end, it is useful to carry out detailed site surveys using state-of-the-art technology as early as the concept stage.
The power line design offer by #AltergaTeam includes the possibility of using 3D LIDAR (Light Detection and Ranging) laser scanning technology, which allows a geometric, three-dimensional model of the scanned area to be made. The data thus acquired is extremely valuable and facilitates the design of overhead and cable power lines when planning the detailed route or location of power poles.
Power line design – scope of work
When preparing a power line project, it should be taken into account that the entire investment process, depending on the location, the size of the investment, the type of line and other factors, will be spread over different stages, which in total can take several months or even years. These stages include an analysis of the site conditions, including issues related to environmental protection or land use plans, the need to obtain the relevant permits to carry out the work from local authorities, the preparation of a design with a description of the key technical solutions, obtaining possible approvals and permits from operators such as the gas grid or the Polish Water Authority, the preparation of a detailed design of the line, and then the stage of implementation of construction and installation works.
Professional power line design services
Alterga’s offer for transmission and distribution line design includes:
- comprehensive design of LV, MV and HV overhead lines
- comprehensive design of upgrades to existing power lines and the scope of work required
- energy efficiency audits, technical condition assessments of lines and preparation of expert reports
- professional analysis using, e.g. 3D laser scanning technology, spatial electromagnetic field measurements, thermal imaging or drone analysis
- comprehensive preparation of technical documentation
- professional support at every stage of investment preparation and supervision of field work implementation
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Steel and reinforced concrete structures
Designs of support structures and foundations for power lines and substations.
