Services

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Due to Climate change and International pressure, Renewable energy power plants are fast replacing conventional thermal power plants (coal or gas or oil fired). The most common type of renewable energy power plants are either Solar or Wind turbines. The power generated in these power plants gets interconnected / synchronised with the electricity grid through Extra high voltage Switchyards and Transmission lines. The existing Grid substation may also need extension of its EHV bays to accommodate termination of the Transmission line originated from the Solar / Wind farm substation. Satcon provides the following Consultancy services for the power system interconnection :
 

1. Visit to the existing Grid substation and checking feasibility of the proposed interconnection with the solar / wind power plant.

2. Electrical system study such as load flow, short circuit, transient stability study using ETAP software to check system parameters.

3. Feasibility report.

4. Detail project report.

5. Preparation of the following drawings :

a. Design basis report

b. Topographical contour survey, Survey drawings, Topographical contour layout

c. Geotechnical investigation and submission of report

d. Soil resistivity test and submission of report

e. Preparation of EHV/HV/MV/LV AC & DC SLDs, controls and indications schematics

f. Overall site layout plan / Land utilisation plan

g. Switchyard layout plan & elevation 

h. Transmission line route layout plan & elevation

i.  Tower spotting and Tower alignment data

j.  Sag & Tension calculation

k. Sag template drawing

l.  ACSR / AAAC conductor sizing calculation

m. Tower clearance diagram

n.  Tower structure GA drawings, Fabrication drawings, Shop drawings

o. Tower structure design calculations by Staad pro software

p. Tower earthing calculation and layout drawings  

q. Indoor and outdoor Cable trench layout

r.  Earthing calculation, layout and earthing details

s. DSLP calculation and layout

t. Control schematics and terminal plans of bay marshalling kiosks, Terminal plan of CT / PT JBs

u. Cable schedule and interconnection diagram for Power and control cables

v.  Technical specification of all equipment and materials

w.  Lighting calculations, SLD, layout and BOM

x.  Bill of materials for cables, cable trays, racks, earthing, lightning protection and lighting systems

y. Short circuit force calculation for strung bus and rigid tubular bus

z. Fault level calculation by ETAP

aa. CT & VT sizing calculations

bb. Battery and battery charger sizing calculations

cc. Vendor drawing review

dd. Civil drawings and calculations for Tower and equipment foundations, cable trenches, culverts, drains, control bldg., DG room, Store shed, Security room, Switchyard panel room (AC Kiosk), pump house, fire water reservoir, boundary wall

ee. GS structure drawings (lattice/pipe type) for gantry towers, beams and equipment supports

ff. SCADA architecture diagram, Input-Output list, BOM of SCADA system

gg. PLCC architecture diagram, BOM of PLCC system

hh. Schematic diagrams, specifications and BOM for Fire detection and alarm system

ii. Design calculations and drawings for air conditioning and ventilation systems

jj. Grid interconnection studies 

Detail engineering activities comprises of preparation of the following drawings and designs for Outdoor switchyard design as a Switchyard design Consultant :

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

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

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

4. Clearance diagram for EHV switchyards.

5. 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.

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

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

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

9. Control cable block diagrams and estimation.

10. Power cable schedule and interconnection chart.

11. Control cable schedule and interconnection chart.

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

13. 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.

14. 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 syste, Oil water separator pit, Rail cum Road, Cable trench, Surface drainage system, Boundary wall, Fence, Fence gate.

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

16. SCADA system Architecture, Technical specification and BOQ.

17. PLCC system Architecture, Technical specification and BOQ.

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

19. Air conditioning and ventilation systems.

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

21. Fire detection and alarm system.

22. Nitrogen injection fire protection systems. 

23. Preparation of technical specification of all Equipment and materials.

Detail engineering activities comprises of preparation of the following drawings and design alculations for GIS substation design as a GIS Substation design Consultant :

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

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

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

4. Clearance diagram for EHV switchyards.

5. 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.

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

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

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

9. Control cable block diagrams and estimation.

10. Power cable schedule and interconnection chart.

11. Control cable schedule and interconnection chart.

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

13. 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.

14. Civil drawings of equipment and gantry tower foundations, Control building, GIS building, GIS bus duct foundations, 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.

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

16. SCADA system Architecture, Technical specification and BOQ.

17. PLCC system Architecture, Technical specification and BOQ.

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

19. Air conditioning and ventilation systems.

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

21. Fire detection and alarm system.

22. Nitrogen injection fire protection systems.

23. Preparation of technical specification of all Equipment and materials. 

Following services can be offered for Transmission Line Design as an Engineering Consultant :

1. Detail route survey and preparation of topographical contour layout drawing. Tower spotting using PLS CADD software.

2. Tower schedule and alignment.
3. Geotechnical investigation along the route.
4. Structural GA drawings with BOM and weight for transmission line towers as part of Structural engineering firms scope of work.

5. Fabrication drawings of Transmission Line Towers.

6. Shop drawings of Transmission Line Towers.
7. Design calculation for lattice type steel tower structures.
8. Foundation drawings and foundation design calculations for transmission line towers.
9. Overall transmission line route layout drawing showing plan and elevation views, location of towers, details of various crossings.
10. Sag & tension calculation and sag chart using PLS CADD Lite software.
11. Technical specification and bill of quantity (BOQ) for transmission line towers and all electrical materials.
12. Review of vendor drawings of structures and equipment.

We provide Prebid engineering services to help EPC contractors to prepare their techno-commercial offers for Power generation, substation and industrial projects. Our services comprises of estimation works for the following equipment and systems :

1. High voltage switchyard equipment like CB, CT, CVT, PT, LA, Isolator, Insulators, ACSR/AAC/AAAC conductors, earth wires, clamps, connectors and hardwares.

2. Power transformer, Distribution transformer, Earthing transformers, Lighting transformers.

3. Indoor MV switchboards - 6.6/11/33kV and MV MCCs.

4. LV Switchgear, DBs, Lighting DBs, MCCs.

5. Battery, battery charger, UPS.

6. Control, metering & protection panels.

7. HV & LV power cables, control and signal cables.

8. Substation automation system.

9. HV & LV motors.

10. VVVF drives.

11. Earthing system.

12. Lightning protection system.

13. Outdoor and Indoor illumination system.

14. Cabling system including trays & racks.

15. Power line carrier communication (PLCC) system.

16. PLC and industrial plant automation system.

17. G.S structures for switchyard.   

18. Complete civil constructional materials for equipment foundations, gantry tower foundations, transformer oil pit, cable trenches, buildings, road, drain, sewerage system, boundary wall, culverts etc.

19. Air conditioning and ventilation systems.

20. Fire protection system, Hydrant and High velocity water spray system.

21. Nitrogen injection fire protection system for Transformers.

Following Civil & Structural Design and Drawings are provided :

1. Structural G.A drawings (with BOM and weight) and design calculations for steel Lattice/box/pipe type gantry towers, beams, equipment support structures, cable trestles, transmission line towers etc.

2. Fabrication drawings and Shop drawings of Lattice type Gnatry tower and Equipment support structures.

3. Civil construction (RCC) drawings, design calculations and bar bending schedules of foundations for gantry towers, equipment support structures, control buildings / DG building / fire fighting pump house / Store shed / Staff quarter buildings, indoor substations, MCC rooms, fire water reservoirs, transformer foundation, Oil water separator pits, cable trenches, roads & drainage, boundary wall, culverts, switchyard fence & gate and cable trench.

Civil/structural design calculations are made using STAAD computer programs.

4. Architectural drawings of industrial buildings like control buildings, indoor substations, GIS substation buildings, store sheds, security room, Staff quarters, pump houses etc.

 We provide the following services :

1. Topographical contour survey of substation plots.

2. Preliminary survey, Check survey and Detail survey of Overhead Line routes upto 400kV.

3. Preparation of topographical contour survey plan and elevation drawings of Substation plots and OHL routes.

4. Tower spotting and selection of various type of towers by PLS CADD software.

5. Sag & Tension calculations by PLS CADD software.

6. Sag template drawing for overhead lines.

7. Overhead line structure design by Staad pro software.

8. Design and drawings of Tower foundations.

9. Geotechnical investigation of substation plots and along overhead line routes (2 bore holes per km or as per Client's advice).

10. Soil resistivity test for substation plots and along overhead line routes (2 points per km or as per Client's advice).

We provide the following Electrical System Studies using ETAP software latest version 2020 :

1. Load flow study

2. Short circuit study

3. earth fault study

4. Motor starting study

5. Equipment sizing

6. MV cable thermal analysis in ducts, buried, on tray

7. Earthing calculation

8. Relay protection coordination

We have delivered the above studies and calculations for several EHV, HV and MV networks, Substations, Transmission line projects in India and abroad.

Inspection and witnessing of routine and acceptance tests at manufacturer's works for following equipment and systems :

1. High voltage switchyard equipment like CB, CT, CVT, PT, LA, Isolator, Insulators, ACSR/AAC/AAAC conductors, earth wires, clamps, connectors and hardwares.

2. Power transformer, Distribution transformer, Earthing transformers, Lighting transformers.

3. Indoor MV switchboards - 6.6/11/33kV and MV MCCs.

4. LV Switchgear, DBs, Lighting DBs, MCCs.

5. Control, metering & protection panels.

6. HV & LV power cables, control and signal cables.

7. Substation automation system.

8. HV & LV motors.

9. VVVF drives.

10. Earthing system.

11. Lightning protection system.

12. Outdoor and Indoor illumination system.

13. Cabling system including trays & racks.

14. Power line carrier communication (PLCC) system.

15. PLC and industrial plant automation system.

16. G.S structures for switchyard.

Project Management Services and Supervision of Erection, Testing and Commissioning service are provided using Software tools for following type of Projects :

1. EHV Transmission system comprising of EHV Transmission Lines and EHV Substations upto 400kV.

2. Electrical Balance of Plant for large thermal power plants.

3. HV / MV Industrial power distribution projects for large steel plants, material handling plants etc.

Testing and Commissioning of Substations and Transmission lines can be provided with assistance from associate Companies.

Structural design calculation using Staad.pro software and preparation of GA / fabrication / shop drawings  of the following :

1. Substation gantry tower and beam.

2. Substation gantry tower with peak and without peak.

3. Switchyard outdoor equipment support structure drawings - Pipe type or conventional lattice type.

4. Transmission line Towers - lattice type.

5.  Overhead distribution line poles / towers.

Following Design and Drawings are delivered :

1. Design calculation for sizing of the Fire fighting pump rating.

2. Design calculation for sizing of pipes of fire hydrant systems and HVWS.

3. Design calculation for number of sprinklers around the Power transformer.

4. Mechanical GA and Layout drawing of the HVWS system along with Deluge valve mounting details.

5. Electrical single line diagram of the Transformer fire fighting system.

6. Layout plan & elevation of the Fire fighting pump house and underground or above ground Reservoir.

7. Technical specification and BOQ of Transformer fire fighting system.

8. Layout plan & elevation drawing of Nitrogen injection fire protection system (NIFPS).