Replacement construction for the Conneforde substation

28. March 2018
  • EQOS Energie renews 110-kV switchgear on behalf of Avacon Netz GmbH

On behalf of Avacon Netz GmbH, EQOS Energie is gradually replacing the existing operational 110-kV switchgear at the Conneforde substation. The replacement construction is necessary due to technical network requirements. The renovation of the substation will be divided into several construction stages and will likely be concluded by the end of 2020. Temporary structures will be constructed for the individual construction sections in order to maintain some technical functions and a reliable supply in general.

EQOS Energie will perform the fitting and initial operation of the new control panels, the construction of the required temporary structures and the disassembly of the existing system. All primary and secondary fitting such as grounding, installation and connection of control cables and cables for the auxiliary system will be conducted on site by experienced specialists.

Furthermore, the required electrical installations at the Conneforde substation include the set-up and commissioning of primary technology such as circuit breakers and converters as well as fitting of the high-voltage terminals and connecting wires. Following each individual construction phase, the associated part of the existing system will be dismantled. One special challenge in this respect is the disassembly of a high-voltage line, which is located above an operating busbar. Finally, protection and functional tests will be conducted.

Overall, EQOS Energie will install triple tubular busbars across 21 sections. In addition, EQOS Energie will use temporary systems to connect the newly constructed system to the old system, so that both systems can be operated jointly during the remodelling phase. The newly fitted auxiliary system will supply the Conneforde substation and all installed equipment with electricity. This will be done via a transformer station, which transforms the power from medium to low voltage and uses it for operating.

EQOS Energie has been active in Germany since 1920. With almost 100 years of experience in the planning, construction, optimisation and maintenance of complex technical infrastructures, the company has realised numerous projects in the area of energy technology. The engineers and fitters deployed by EQOS Energie work in an interdisciplinary manner and across national borders. As a result, the range of products and services covers any and all facilities and systems for the generation, transmission and use of electricity and data in the fields of energy, telecommunication, railway and buildings.

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