• Engineering Consultant for Design, Engineering and Consultancy Services for Extra High Voltage Substations, Transmission Lines, Electrical Balance of Plant (EBOP) of Thermal Power Plants, Large Electrical Systems (HV/MV) of Steel plants, Coal & Iron Handling Plants & Misc. Industries, Electrical System studies using ETAP 2020.

  • Engineering Consultant for Design, Engineering and Consultancy Services for Extra High Voltage Substations, Transmission Lines, Electrical Balance of Plant (EBOP) of Thermal Power Plants, Large Electrical Systems (HV/MV) of Steel plants, Coal & Iron Handling Plants & Misc. Industries, Electrical System studies using ETAP 2020.

Afghanistan - Detail engineering of 220/20kV Transformer bay extension at Khost Substation and 20kV Overhead line from Khost to Camp Clark in Khost Province

 

Scope of Work for extension of 220/20kV Khost Substation :

SL. NO. DRAWING TITLE
   
A. ELECTRICAL DRAWINGS :
   
A.1 SLD
1 Key SLD - 220/20kV Transformer bay and 20kV Switchgear
2 Protection and Metering SLD - 220/20kV Transformer bay and 20kV Switchgear
3 SLD - 400V LVAC distribution
4 SLD - 110V DC distribution
5 SLD - 400V BMK for 220kV bay
   
A.2 ELECTRICAL LAYOUT PLAN & ELEVATION, EKD
1 Electrical Layout - Plan & Elevation of  220/20kV Transformer bay extension
2 Erection key diagram - Plan & Elevation of 220/20kV Transformerbay extension
3 Electrical Equipment and Cable Trench Layout of Control building and 20kV switchgear room
   
A.3 CABLE ROUTING, TRAY & TRENCH LAYOUT AND DETAILS
1 Outdoor Switchyard Cable Tray & cable duct layout - Plan & Section with BOM
   
A.4 EARTHING LAYOUT & DETAILS
1 220/20kV Outdoor yard - Earthing layout & BOM 
2 Typical Earthing Installation Details
   
A.5 LIGHTNING PROTECTION LAYOUT & DETAILS
1 220/20kV Outdoor yard- Lightning protection layout with BOM
   
A.6 ILLUMINATION AND SMALL POWER LAYOUT
1 220/20kV Outdoor yard - Illumination layout, SLD and BOM
2 Conduit sizing, schedule and BOQ
   
A.7 SCADA SYSTEM
1 SCADA system block diagram for inclusion of new bays and switchgears in existing SCADA system
   
A.8 BMK INTERLOCKING DIAGRAM
1 Bay Interlocking diagram and control terminal plan for BMK of 220kV Transformer bay
   
A.9 CABLE SCHEDULE & INTERCONNECTION DIAGRAMS
1 Control Cable schedule and Interconnection Diagrams for 220kV switchyard and 20kV Switchgear 
2 ACDB, DCDB, LDB & Other DB's - Power Cable Schedule and Interconnection Diagram
3 MV Power Power Cable Schedule and Interconnection Diagram
   
B ELECTRICAL DESIGN CALCULATIONS :
1 220/20kV Switchyard - Earthing Calculation
2 220/20kV Switchyard - Lightning Protection Calculation
3 Sag & Tension Calculation for Strung bus
4 Short Circuit Force Calculation for Strung bus
5 Lighting calculation - Outdoor yard 
6 MV cable sizing calculation
7 LV cable sizing calculation
8 220kV & 20KV CT & VT sizing calculation
   
C STRUCTURAL DRAWINGS WITH BOM AND WEIGHT :
   
C.1 STRUCTURE G.A DRAWINGS (Including details and BOQ of anchor bolts) :
1 Overall Structural layout 220/20kV substation 
2 GA drawing of structure for 220kV transformer gantry tower
3 GA drawing of structure for 220kV transformer gantry beam
4 GA drawing of structure for 220kV Main Busbar structure
5 GA drawing of structure for 220kV Transfer Busbar structure
6 GA drawing of support structure for 220kV Surge Arrester
7 GA drawing of support structure for 220kV Isolator
8 GA drawing of support structure for 220kV CT
9 GA drawing of support structure for 220kV BPI
10 GA drawing of structure for 20kV LA & Isolator mounted outgoing line structure
   
C.2 STRUCTURAL DESIGN CALCULATIONS :
1 Structural design calculations for Tower & Equipment support structures
   
D CIVIL CONSTRUCTIONAL DRAWINGS AND DESIGN CALCULATIONS :
   
D.1 CIVIL CONSTRUCTIONAL DETAILS :
1 Foundation details of 220/20kV, 16MVA Transformer
2 GA of Common Oil Pit for 16MVA Transformer
3 Foundation details of 220kV outdoor equipment 
4 Foundation details of 220kV gantry towers
5 Outdoor Cable Duct & Cable Trench layout & RCC details
6 Indoor Cable Trench layout & RCC details
7 Outdoor Drainage layout and details
8 Substation Road layout and Sectional details
   
D.2 MISC. CIVIL DESIGN CALCULATIONS
1 Design calculation for 16MVA Transformer Foundation
2 Design calculation for Common Oil Pit for 16MVA Transformer
3 Design calculation for 220kV and 20kV outdoor equipment foundations
4 Design calculation for 220kV gantry tower foundations
5 Design calculation for Outdoor Cable Trench & Cable Duct
6 Design calculation for Indoor Cable Trench
7 Design calculation for Outdoor Drainage system
8 Design calculation of Substation Raod
   
E. ELECTRICALSYSTEM STUDY
1 Load Flow Study for Transformer bay and 20kV OHL
2 Short Circuit Study for Transformer bay and 20kV OHL
3 Relay Setting & Protection Coordination Study
   
  SUB TOTAL
   
F Preparation of technical specifications for 220kV, 20kV, LV AC and DC equipment
G As built drawings (based on mark up drawings received from site)

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