Brownfield Substation Design Single Line & Relay Metering

Feasibility Design of 33/11kV Substation

What you'll learn

✓ Green Filed and Brown Field Projects
✓ How to Design SLD
✓ Protection Philosophy
✓ Designing as Protection Scheme

Requirements

● Basic Understanding of substation and protection

Description

Brownfield substation projects are among the most challenging and critical tasks in power system engineering. Unlike greenfield projects, brownfield design requires working with live substations, legacy equipment, incomplete documentation, and strict operational constraints.
This course is a practical, step-by-step guide to designing Single Line Diagrams (SLD) and Protection & Control diagrams specifically for brownfield substation projects.
You will learn how to interpret existing drawings, understand old and modern protection philosophies, and safely integrate new equipment into an operational substation — exactly how it is done in real utility and EPC projects.

What You Will Learn

Greenfield vs Brownfield Fundamentals
• What is a Greenfield, Brownfield, and Hybrid substation project
• Key differences in design philosophy, risks, and constraints
• Why brownfield projects require a different engineering mindset
Reading & Understanding Existing SLDs
• How to read legacy Single Line Diagrams
• Understanding symbols, conventions, and undocumented practices
• Identifying existing, redundant, and future equipment
Brownfield Drawing Conventions
• How to show
• Existing equipment (Black)
• New / proposed equipment (Red)
• Dismantled / removed equipment (Green or Blue)
• Best practices for revision control and clarity in live substations
Legacy Equipment & Old Substation Practices
• What is a Fault Thrower Switch
• Why it was used in older substations
• Operational and protection implications
• Understanding Neutral VT
• Purpose and application
• Typical protection schemes connected to Neutral VT
• Earth fault detection philosophy
Busbar & Switching Schemes
• Single Bus – Single Breaker Scheme
• Double Busbar Scheme
• Operational advantages and limitations of each
• How scheme selection affects protection design
Equipment Rating & Selection
• How to define
• Short-circuit rating
• Continuous current rating
• Selecting circuit breakers, disconnectors, and busbars
• Practical considerations in brownfield upgrades
Current Transformer (CT) Engineering
• How to select CT ratios and cores
• Protection vs metering CTs
• CT placement to define protection zone boundaries
• Common mistakes in brownfield CT arrangements
Protection Zones & Overlapping
• What is a protection zone
• Why zone overlapping is required
• How overlapping is achieved using CT locations
• Avoiding blind spots in protection coverage
Busbar Protection Design
• CT connections for busbar protection
• Typical busbar protection philosophies
• How CT wiring defines the busbar zone
Tripping Logic & Protection Interfaces
• Understanding tripping logic in brownfield substations
• Interfacing breakers, busbar protection, and feeder protection
• Practical examples of trip paths and signal flow

Who this course is for

■ Engineers, Technicians

Homepage

https://www.udemy.com/course/brownfield-substation-design-single-line-relay-metering

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