Design and Engineering of Extra High Voltage Substations

Detail engineering activities comprises of preparation of the following drawings and documents for GIS substation design, Outdoor switchyard design as a Switchyard design Consultant :

1. Preparation of Technical specifications and Tender document, tender drawings for High voltage equipment.

2. Relay and Metering SLDs of EHV switchyards, MV switchgear panels, LV switchgears and MCC panels.

3. Electrical layout plan & elevation of EHV switchyards, GIS substation buildings, indoor substations and plant electrical rooms.

4. Erection key diagram of EHV switchyards along with BOQ of clamps, connectors, conductors, shield wires, hardwares.

5. Clearance diagram for EHV switchyards.

6. Cable trench layout with BOQ of cable trays, bends, Tee, reducers, cable racks etc. for EHV switchyards, GIS substation buildings, indoor substations and plant electrical rooms.

7. Earthing calculation and earthing layout with BOQ of all earthing materials for EHV switchyards, GIS substation buildings, indoor substations and plant electrical rooms.

8. Direct stroke lightning protection (DSLP) calculation and layout of EHV switchyards, GIS substation buildings, indoor substations and plant electrical rooms.

9. Interlocking diagrams for 400kV, 220kV, 132kV, 33kV switchyards. Protection trip logics.

10. Control cable block diagrams and estimation.

11. Power cable schedule and interconnection chart.

12. Control cable schedule and interconnection chart.

13. Control schematics for MV & LV motor feeders in MCC - Unidirectional, Bidirectional, VVVF drives.

14. Lighting calculations, SLD for lighting distribution and layout with BOQ of lighting materials for outdoor switchyard, road, open areas, substation buildings, staff quarters, plant buildings, conveyor galleries, stockpile areas, factory sheds etc.

15. Civil drawings of equipment and gantry tower foundations, Control building, Switchgear building, Store shed, DG building, Security post cum Dormitory, Transformer oil pit and drain away system, Oil water separator pit, Rail cum Road, Cable trench, Surface drainage system, Boundary wall, Fence, Fence gate.

16. Steel structure for Gantry towers, Beams and Equipment supports (Lattice / Pipe type).

17. SCADA system Architecture, Technical specification and BOQ.

18. PLCC system Architecture, Technical specification and BOQ.

19. Fiber Optic communication system Architecture, Technical specification and BOQ.

20. Air conditioning and ventilation systems.

21. Fire protection system, hydrant and High velocity water spray (HVWS) systems,

22. Fire detection and alarm system.

23. Nitrogen injection fire protection systems.