Electrical Single Line Diagrams, Read & Understand
Covering Low Voltage AC, Low Voltage DC, Electrical Power Engineering
Description
Course Title:
Mastering Single Line Diagram:
Covering Low Voltage AC, Low Voltage DC, Medium Voltage & High Voltage Single Line Diagrams.
Course Details:
Welcome to the course of “Single Line Diagram”. In power engineering, a single-line diagram (SLD), also sometimes called one-line diagram, is a symbolic representation of a three-phase electric power system.
The one-line diagram has its largest application in power flow studies. Electrical elements such as circuit breakers, transformers, capacitors, bus bars, and conductors are shown by standardized schematic symbols. Instead of representing each of three phases with a separate line or terminal, only one conductor is represented.
Whenever it comes to start new project, define scope of work, Single line diagram is always the most important document to consider & prepare. Furthermore single line diagram is also required to prepare shutdown / maintenance method statement.
Following topics are covered in this training:
Introduction to Single Line Diagram
Three Line Diagram
What is difference between single line and three line diagram
How to represent different element in Single line Vs three line diagram
Components of Single Line Diagram, we will see how these components are shown in drawings and how these components actually looks like.
Circuit Breaker
Isolator
Earth Switch
Power Transformer
Voltage Transformer
Current Transformer
Lighting Arrestor
Auxiliary Transformer
Mimic
Control Cubicle
Cable Compartment
Surge counter
Busbar
Local / Remote Control
High Speed Earth Switch
Three Position Switch
MV CB with draw out mechanism
Introduction to interlocking, Isolator & Circuit Breaker, Isolator and earth Switch, Bus bar isolator and busbar earth Switch
Cable Sealing End
SF6 to air bushing
NGR
Start point earthing through resistor / solidly earth
Continuous and short circuit rating of equipment
Understanding ANSI codes
Current Transformer Polarity
Current Transformer Cores
Protection and metering cores of current transformer
Why Current transformer secondary must of shorted for all times
Protection and metering classes of instrument transformers
What will happened if current transformer is connected with wrong polarity.
Metal Enclosed and Metal Clad Switch Gear
Synchronizing
SLD for wind power plant
Ring Main Units
Connections of wind turbines to loops
Zigzag transformer and why zigzag transformer is used
Why neutral point of star connected transformer is grounded
Incoming and outgoing feeder philosophy
Percentage impedance of transformer and its relationship with tap changer
Review ACDB Single line Diagram with interlocking
Review ACDB Single line Diagram with interlocking
Review 132/11kV Single bus Single Breaker Scheme Single line diagram
Review 132/11kV Double bus Single Breaker Scheme Single line diagram
Relay and metering SLD
Regards
What You Will Learn!
- Learn how to read, understand & interpret Single Line Diagrams. How to extract information from the SLD
- Realize the importance and roles of SLD
- Realize the importance and roles of SLD
- Extract relevant information from SLD
- Identify various symbols of the component in an SLD
- Read, understand and extract SLD for a LV (Low Voltage) ACDB Switchboard / Panel Board
- Read, understand and extract SLD for a LV (Low Voltage) DCDB Switchboard / Panel Board
- Understand Relay and Metering SLD
- Read, Understand 132/11kV Single Line Diagram
- Understand ANSI codes
- Single Bus Single Breaker Scheme
- Double Bus Double Breaker Scheme
- Interlocking
- Various protection relays installed at feeder
- Distance Protection, Line differential protection, over current current, over / under voltage protection
- Current and voltage transformer
- Circuit Breaker, Isolator, Earth Switch, Busbar, power transformer
Who Should Attend!
- Students, Professionals, Diploma holders, Engineers