Greece – Transformer substation – Έργα Ενίσχυσης στους Υ/Σ ΥΤ/ΜΤ Καλλιστηρίου, Αγιάς και Λαμίας

The subject of the contract is the implementation of the following project: «Works for the reinforcement of the substations of Kallisteion, Agia and Lamia». (CPV: 45232221, DA17-2, 45315400, 45315500, 31174000, 31682300). The project includes the following reinforcement works, hereinafter referred to as sub-projects:

Sub-project A: Reinforcement of the Kallisteion Substation with a 3rd 150/20kV Power Transformer, and more specifically:

- Addition of a 150kV Power Transformer Gate,

- Connection of 150/20kV Power Transformer (No3), 40/50MVA with the HT and MT,

- Expansion of the MT side, with the addition of eight (8) new MT departure panels of type OLM, one (1) MT arrival panel of type TM, one (1) set of MT busbar connection panels of type BRM/BSM and one (1) busbar formation panel of type AD, if required,

- Expansion of the IEC61850 network of the DEDDIE and integration of the new PMUs in the PMU DEDDIE.

Sub-project B: Reinforcement of the Agia Substation with a 2nd 150/20kV Power Transformer, and more specifically:

- Addition of a 150kV Power Transformer Gate,

- Supply and installation, addition of 150/20kV Power Transformer (No2), 40/50MVA,

- Expansion of the MT side, with the addition of eight (8) new MT departure panels of type OLM, one (1) MT arrival panel of type TM, one (1) set of MT busbar connection panels of type BRM/BSM, one (1) MT shunt reactor panel of type CM and one (1) busbar formation panel of type AD, if required,

- Addition of a shunt reactor assembly,

- Upgrade of the existing control and protection equipment under the responsibility of DEDDIE and ADMHE,

- Implementation of a new communication network according to IEC-61850 and installation of a new PMU under the responsibility of DEDDIE,

- Implementation of a new communication network according to IEC-61850 and installation of a new PMU under the responsibility of ADMHE.

Sub-project C: Reinforcement of the Lamia Substation with a 3rd 150/20kV Power Transformer, and more specifically:

- Addition of a 150kV Power Transformer Gate,

- Renovation and expansion of the HT busbar protection system,

- Supply and installation, addition of 150/20kV Power Transformer (No3), 40/50MVA,

- Expansion of the outdoor MT side, with the addition of eight (8) new MT departure panels of type OLM, one (1) MT arrival panel of type TM, one (1) MT busbar connection panel of type BSM and one (1) shunt reactor panel of type CM,

- Addition of a shunt reactor assembly,

- Implementation of a new communication network according to IEC-61850 and installation of a PMU under the responsibility of DEDDIE. Integration of the PMUs of the new HT gate and the new MT panels under the responsibility of DEDDIE.

1. The project will be carried out in the aforementioned substations of the Interconnected System, which are in operation. Therefore, enhanced protection measures must be taken during the execution of the works, and the necessary isolations of the in-service equipment must be scheduled properly and in a timely manner. The execution and completion of the individual sub-projects will be carried out in a specific sequence as indicated in the contract documents. The subject of the project includes the preparation of the required studies, the construction of the necessary civil works, the supply of all necessary materials/equipment, their erection/installation in the respective substations and their energisation/commissioning after the necessary checks and tests. Furthermore, as part of the project, the corresponding works for the extension of the System under the responsibility of ADMHE will be carried out, in accordance with the specifications in the technical and commercial sections of the Declaration.