Substation Design & Engineering - Sizing / Calculations

Outline substation sizing and calculations through design activities, inputs for sizing and engineering, and a flowchart-based development plan covering short circuit, busbar sizing, grounding, electrical clearances, civil and illumination design.

Develop a comprehensive design development plan detailing inputs and outputs, design review and verification, resource allocation, and training and communication needs for substation sizing and calculations.

Explore the inputs for substation design and engineering, including annexure one system parameters and annexure two to four for new, expansion or reinforcement, and customer projects.

Explore the flowchart of substation design activities from basic inputs to as-built drawings, including the single-line diagram, switchyard layout, busbar sizing, protection schemes, relay settings, and testing and commissioning.

Learn about short circuit forces on strung bus and busbar sizing calculations for substation design. Understand input requirements, design criteria, and IEC 60865 based methodology for accurate assessment.

Design and size busbars for substations by applying rigid and flexible busbar concepts, short-circuit force calculations, wind loads, corona considerations, and cantilever checks under IEC 60865 guidelines.

Master earth mat design and ground grid sizing for substations, applying IEEE 80 guidelines to compute soil resistivity, conductor sizes, and step and touch voltages for safety.

Explore sag tension calculation for substations, using catenary theory to relate weight, temperature, and wind to conductor sag and line tension; learn inputs, wind and ice loading, and Newton-Raphson solution.

Learn how to derive electrical clearances in substations, including phase-to-earth, face-to-face, isolating, section, and ground clearances, and verify them with equipment layouts to optimize safety and prevent flashovers.

Provide direct stroke lightning protection for substations by detailing shield and ground wires, protective radii, and design methods for single, two, and multi-mast layouts.

Learn to design substation illumination via lighting calculations, selecting fixtures, achieving required lux levels, and applying maintenance factors, coefficient of utilization, reflectance, and room index for uniform, safe lighting.

Explores structure design for substation towers, girders and equipment, outlining input requirements, design criteria, methodology, wind and load stresses, safety factors, and relevant standards including ascii 52.

Learn civil foundation design for substations, including soil data, wind and seismic inputs, and design checks for bearing capacity, overturning, sliding, reinforcement, and shear.