Services

Overhead and underground line design

We design overhead (LEA) and underground (LES) electrical lines from low to high voltage, under ANRE D1 attestation no. 22387/23.09.2024. The technical documentation covers every standardized nominal voltage: 0.4 kV, 6 kV, 10 kV, 20 kV, 110 kV, 220 kV and 400 kV.

ANRE context

ANRE D1 attestation no. 22387/23.09.2024 authorises PowerGrid Solution to design overhead and underground electrical lines at any standardized nominal voltage. LEA and LES works are governed by the PE 106/2003 standard (overhead lines), the PE 107/2002 standard (underground lines) and the applicable ANRE orders. The technical design has to meet the network operator's requirements, the permitting conditions and the safety standards for operation.

In brief

What this service solves

PowerGrid Solution designs overhead and underground electrical lines for the standardized nominal voltages, from 0.4 kV to 400 kV, under its ANRE D1 attestation.

ANRE D1 attestation0.4 kV - 400 kVRomania and the Republic of Moldova

01

Input

We take over the design brief, the topographic data and the operator's permitting conditions.

02

Analysis

We set the optimal route, the line type and the main equipment.

03

Documentation

We produce the technical report, the mechanical and electrical calculations, the site plans and the installation details.

04

Permitting

We support the permitting process and the clarifications through to acceptance of the works.

When it is needed

  • Designing an electrical line is needed when a connection or the development of the network calls for a new LEA or LES route.
  • It applies to upgrades, relocations and refurbishments of existing lines.
  • Distribution and transmission operators ask for it on their own network projects.
  • Photovoltaic, BESS or industrial investments with a line route of their own start from the same design.

Documents to start from

  • Designing an electrical line starts from the design brief or from the connection permit (ATR) issued by the operator.
  • The topographic survey and the site plan are required.
  • The approvals from owners and from the utility operators affected condition the route.
  • The technical data on the equipment and on the network configuration completes the calculation.

Main deliverables

  • The client receives the technical report and the sizing calculations for the line.
  • The documentation contains the site plans, the longitudinal profiles and the installation details.
  • The material and equipment lists make tendering possible.
  • The set is prepared for permitting, construction and acceptance.

Decisions it settles

  • The design establishes the line type, overhead or underground, and the nominal voltage.
  • It fixes the route and the anchoring or riser points.
  • It states the construction solution, the conductor and the protection equipment.
Official sources

The ANRE framework used as reference

The references below are used to orient the process. The specific conditions are confirmed for every project with the network operator and with the documents applicable at the date of the request.

FAQ

Frequently asked questions about Overhead and underground line design

Designing an electrical line is needed when a connection or the development of the network calls for a new LEA or LES route. It applies to upgrades, relocations and refurbishments of existing lines. Distribution and transmission operators ask for it on their own network projects. Photovoltaic, BESS or industrial investments with a line route of their own start from the same design.

Contact

Talk to an engineer

We review your request and follow up with the next steps