Romania – Electric accumulators – Furnizare, montaj, comisionare și punere în funcțiune sistem de baterii de stocare energie electrică compatibile cu invertorul Huawei SUN2000 -100KTL M2, inclusiv intervenții electrice conexe, necesare pentru integrarea cu sistemul fotovoltaic și sistemul de management energetic existent la Palatul Administrativ din județul Maramureș

The subject of the contract is the supply, transport, handling, assembly, connection, configuration, commissioning, start-up and integration of a system of 4 battery energy storage systems compatible with the existing Huawei SUN2000 -100KTL M2 inverters, together with all interventions on the electrical, civil, grounding, monitoring, protection and arrangement installations necessary for integrated operation with the existing photovoltaic system, as well as obtaining the approval of the distribution operator DEER SA.

The main purpose of the procurement is to increase the local use of the electrical energy produced by the existing photovoltaic system, by storing the energy produced during periods of excess and using it to supply the building's consumers during periods when consumption exceeds instantaneous production. • optimizing the self-consumption of electrical energy; • increasing the energy efficiency of the building; • reducing the energy drawn from the public grid; • controlled integration of the existing photovoltaic system with a battery system; • monitoring of energy flows; • increasing the safety and predictability of the operation of the electrical installation; • ensuring a modern, efficient and compatible energy infrastructure with the current requirements regarding the energy transition.

The detailed description of the subject of the contract is presented, without being limited to:

1. Preparation of technical execution documentation for the storage system, technical regulation of these for compliant operation, obtaining the approval of the initial electrical installation specialist designer;

2. Obtaining an updated ATR and approval from the distribution operator DEER SA of the technical documentation;

3. Supply and installation of a set of 4 storage batteries compatible with the Huawei SUN2000 -100KTL M2 inverters;

4. Transport, handling, craning, positioning and fixing of equipment;

5. Modification of the existing 0.4 kV TDG-RN;

6. Installation in TDG-RN of a disconnecting switch to the TDC-ESS 0.4 kV panel;

7. Installation of electronic protection for current, voltage and frequency;

8. Adaptation and completion of the 0.4 kV busbar system;

9. Realization of a 0.4 kV column between the existing TDG-RN and the TDC-ESS 0.4 kV;

10. Supply and installation of TDC-ESS 0.4 kV;

11. Equipping TDC-ESS with a main circuit breaker provided with all the protections imposed by the standards and legislation in force and 4 connecting circuit breakers for the storage units;

12. Supply and installation of cables for the realization of 0.4 kV columns between TDC-ESS and the battery assemblies ESS1, ESS2, ESS3, ESS4. N2XH type cables will be used according to the sections resulting from the technical documentation prepared by the contractor, but with the obligation to respect the characteristics imposed by the standards in force for cables placed in public buildings;

13. Supply and installation of junction boxes, protective tubes, terminal boots, grommets, clamps, straps and accessories;

14. Realization of an earthing terminal with R < 4 ohms and connection of the equipment to it;

15. Supply and installation of a Smart Meter that allows the correlated operation of the storage system with the renewable energy production system;

16. Supply and installation of Power Sensor or current transformers related to Smart Meter;

17. Integration with the existing photovoltaic system;

18. Configuration of the monitoring, communication and control system;

19. Integration of the storage system into the energy consumption monitoring system implemented in the administrative building;

20. Tests, verifications, adjustments, commissioning and PIF;

21. Training of the beneficiary's personnel;

22. Delivery of the final technical documentation and the quality dossier Manual of operation;

23. Obtaining the updated connection certificate from the distribution operator DEER SA.