EHV Design- Primary

Role & responsibilities

Primary Design Engineering

• Develop primary design for AIS and GIS substations from concept through detailed engineering.
• Prepare and review Single Line Diagrams (SLDs), General Arrangement (GA) drawings, equipment layouts, sections, elevations, and plot plans.
• Design outdoor switchyards and indoor GIS substations.
• Develop busbar arrangements, conductor layouts, and equipment clearances in accordance with CEA Guideline/IEC/IEEE standards.

Electrical System Design

• Perform engineering calculations for: Power transformer sizing Busbar and conductor sizing; Earthing (grounding) system design Lightning protection system design; Cable sizing and routing; Station service AC/DC systems; Battery sizing; Illumination calculations; Short-circuit withstand checks Busbar force calculations

Equipment Engineering

• Prepare technical specifications and datasheets for: Power Transformers Circuit Breakers Disconnectors & Earthing Switches Current Transformers (CTs) Voltage Transformers (VTs/CVTs) Surge Arresters GIS/AIS equipment Neutral Grounding Equipment Busducts Station Service Transformers HV and MV cables

Engineering Deliverables

• Single Line Diagrams (SLD)
• General Arrangement (GA) Drawings
• Switchyard Layouts
• GIS Building Layouts
• Equipment Foundation Load Inputs
• Cable Trench & Cable Tray Layouts
• Busbar Layouts
• Earthing Layouts
• Lightning Protection Layouts
• Bill of Materials (BOM)
• Material Take-Off (MTO)
• Design Reports and Calculations

Technical Review & Vendor Coordination

• Review vendor drawings, datasheets, calculations, and GA drawings.
• Evaluate technical bids and prepare Technical Bid Evaluation (TBE) reports.
• Resolve vendor technical queries and document deviations.
• Support procurement during equipment selection and approval