Electrical substations

We cover all voltage levels by applying efficient solutions.

After years of experience and development, we are one of the benchmark companies at national level.

We are approved by the national transmission company (RED ELÉCTRICA DE ESPAÑA).

We are approved by the main electricity distribution companies: IBERDROLA, GAS NATURAL FENOSA...

This experience has been transferred to other countries developing substation projects for transmission and distribution companies at an international level: Societe Nationale D Electricite (SNEL, Republic of Congo), Empresa de Distribución de Electricidad de Luanda (EDEL), Kenya Electricity Transmission Company (KETRACO), KENYA POWER, Energy, Water and Sanitation Authority (EWSA), Corporación Nacional de Electricidad en Ecuador (CNEL).

Our designs cover all levels of tension, adapting our solutions to the required degrees of demand, criticality and operability; from transformation centers or medium voltage sectioning centers (13.5 kV, 20 kV, 30 kV, …), generally intended for secondary distribution networks, rural electrification or even collection networks for renewable energies, to large substations in high voltage (220-230 kV) and in very high voltage (400-500 kV) generally destined to primary transmission networks.

  • More than 1,000 substations.
  • Different technologies: AIS, HIS, GIS.
  • Different configurations: single bar, double bar, transfers, switch and a half, switch and a third, ring.
  • Different functions: transmission and distribution, evacuation of wind generation, supply to industrial plants.

A completely comprehensive development with its own resources, covering all possible engineering phases:

The different phases:

  • Basic or conceptual engineering: technical and economic feasibility studies, connection studies, implantation studies.
  • Processing, conceptual, or administrative engineering, management of conditions.
  • Property engineering: development of bidding documents, preparation of offers, engineering review developed by third parties.

And the disciplines:

  • Civil engineering: earthworks, drainage, foundations, building.
  • Electromechanical engineering: design of support metal structures, earthing networks, electromechanical assemblies.
  • Electrical engineering: sizing of busbars and primary systems, auxiliary services, lighting, insulation coordination.
  • Control and protection engineering, including selectivity and coordination studies.
  • Commissioning of the facilities.
  • Supervision and site management.
grupo sisener ingenieros en España

diseños y soluciones están adaptados a todos los requisitos particulares del proyecto.

diseño de subestaciones eléctricas

Our designs and solutions are adapted to all the particular requirements of the project.

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