Electrical Single Line Diagrams, Read & Understand from Udemy

Course Title:

Mastering Single Line Diagram:

Covering Low Voltage AC, Low Voltage DC, Medium Voltage & High Voltage Single Line Diagrams.

Trainer Introduction:

Your trainer brings over 21 years of experience in operation & maintenance, erection, testing, project management, consultancy, supervision, substation automation, SCADA, and commissioning. With a background spanning power plants, high voltage substations, and HVDC installations, he has worked with renowned organizations such as Siemens Saudi Arabia. He has been involved in over 20 high-voltage substation projects across Pakistan and Saudi Arabia.

His expertise encompasses a wide range of areas including protection systems, substation automation systems, design, testing, and commissioning of power generation systems, high voltage switchgear, protection relays, and control schemes. He has a proven track record of leading testing and commissioning teams for implementing electrical infrastructure projects for industrial clients, including steel and petrochemical industries.

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 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's inside

Learning objectives

Learn how to read, understand & interpret single line diagrams. how to extract information from the 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
Show more
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Learn how to read, understand & interpret single line diagrams. how to extract information from the 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
Show more
Show less

Syllabus

Introduction

Single Line Diagram description and components

Single Line Diagram, Three Line Diagram definitions and requirements

Graphical Presentation of SLD Vs Three Line or Two line Diagram

Components of SLD

Circuit Breaker

Isolator

Earth Switch

Power Transformer

9 Voltage Transformer

Current Transformer

Cable Sealing End

Cable With Termination

Aux Transformer

14 Surge Arrestor

SF6 to Air Bushing

Busbar

MSc Components of SLDs

ANSI Codes

Mimic Panel

AC Single Line Diagram ( Low Voltage System)

DCDB Single Line Diagram ( Low Voltage System)

DCDB Single Line Diagram

132 and 11kV Single Line Diagram

Relay and Metering SLDs

Double Bus Single Breaker Scheme

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Electrical Single Line Diagrams, Read & Understand with these activities:

Review Electrical Symbols and ANSI Standards

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Familiarize yourself with common electrical symbols and ANSI standards to improve your understanding of single-line diagrams.

Browse courses on Electrical Symbols

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Find a comprehensive list of electrical symbols.
Study the symbols related to circuit breakers, transformers, and switches.
Review ANSI standards relevant to electrical diagrams.

Review 'Electrical Power System Protection' by A. Wright and C. Christopoulos

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Deepen your understanding of protection schemes and relay functions commonly depicted in single-line diagrams.

View Electrical Power System Protection on Amazon

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Read the chapters related to protection relays and schemes.
Take notes on the different types of relays and their applications.
Relate the relay functions to their representation in SLDs.

Create a Single-Line Diagram Glossary

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Solidify your understanding of SLD components by creating a glossary of terms and symbols used in single-line diagrams.

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Compile a list of all components covered in the course.
Define each component and its function in the power system.
Include the graphical symbol used to represent each component.
Organize the glossary alphabetically for easy reference.

Four other activities

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Interpret Sample Single-Line Diagrams

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Practice interpreting single-line diagrams to improve your ability to extract information and understand system configurations.

Show steps

Find sample single-line diagrams online or in textbooks.
Identify all the components and their functions.
Trace the power flow through the diagram.
Explain the purpose of each protection device.

Design a Single-Line Diagram for a Simple System

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Apply your knowledge by designing a single-line diagram for a simple electrical system, such as a residential building or a small commercial facility.

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Define the system's components and their ratings.
Select appropriate symbols for each component.
Draw the single-line diagram using a software tool or by hand.
Label all components and connections clearly.
Review the diagram for accuracy and completeness.

Delve into 'Power System Analysis and Design' by J. Duncan Glover, Mulukutla S. Sarma, and Thomas J. Overbye

Show steps

Gain a deeper understanding of the power system analysis principles that underlie the information presented in single-line diagrams.

View Power System Analysis and Design, SI Edition on Amazon

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Read the chapters on power flow analysis and fault analysis.
Work through example problems to reinforce your understanding.
Relate the analysis results to the information shown in SLDs.

Develop a Presentation on a Specific SLD Application

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Create a presentation that focuses on a specific application of single-line diagrams, such as substation design or renewable energy integration.

Show steps

Choose a specific application of single-line diagrams.
Research the topic and gather relevant information.
Create a presentation with clear and concise slides.
Practice the presentation to ensure a smooth delivery.

Career center

Learners who complete Electrical Single Line Diagrams, Read & Understand will develop knowledge and skills that may be useful to these careers:

Substation Engineer

A substation engineer is responsible for the design, construction, and maintenance of electrical substations. Single line diagrams are crucial for understanding the configuration and operation of substations. This course focusing on single line diagrams helps the substation engineer to interpret the diagrams of various components such as circuit breakers, transformers, busbars, and protection relays. This allows for efficient planning of maintenance, upgrades, and troubleshooting within the substation environment. This knowledge of ANSI codes within SLDs is relevant for understanding the standards that guide the design and operation of substations.

See salaries and explore the career path for Substation Engineer

Electrical Engineer

An electrical engineer designs, develops, tests, and supervises the manufacturing of electrical equipment. This often includes power generation systems, high voltage switchgear, and control schemes, all represented in single line diagrams. This course on single line diagrams helps an Electrical Engineer review and understand these diagrams, including those for low voltage AC and DC systems, as well as medium and high voltage systems. By learning to interpret components like circuit breakers, isolators, and power transformers within a single line diagram, the electrical engineer can better define project scopes and prepare maintenance procedures.

See salaries and explore the career path for Electrical Engineer

Commissioning Engineer

A commissioning engineer is responsible for testing and starting up new electrical equipment and systems. Single line diagrams are used to verify the correct installation and operation of the equipment. This course on single line diagrams helps the commissioning engineer to interpret the diagrams of components like circuit breakers, transformers, and protection relays. The reviewing of 132/11 kilovolt single line diagrams and understanding interlocking schemes allows for efficient and accurate commissioning activities. With the knowledge from this course, the commissioning engineer executes their roles and responsibilities more effectively.

See salaries and explore the career path for Commissioning Engineer

Electrical Technician

An electrical technician installs, maintains, and repairs electrical equipment. Single line diagrams are used to understand the layout and connections of electrical systems. This course on single line diagrams helps the electrical technician to identify the various symbols of components in a diagram and extract relevant information for troubleshooting and maintenance. The training on low voltage AC and DC single line diagrams is useful for technicians working on switchboards and panel boards. With the knowledge from this course, the electrical technician executes their roles and responsibilities more effectively.

See salaries and explore the career path for Electrical Technician

Electrical Design Engineer

An electrical design engineer creates electrical system designs for various applications. Single line diagrams are a fundamental tool used to represent and communicate these designs. This course may be useful for the electrical design engineer, helping them to understand the standards and symbols used in creating single line diagrams. The single line diagram is the most effective way to communicate the scope of work of a new project. A familiarity with ANSI codes ensures the designs comply with industry standards.

See salaries and explore the career path for Electrical Design Engineer

SCADA Engineer

A supervisory control and data acquisition engineer designs and maintains SCADA systems that monitor and control electrical infrastructure. Single line diagrams provide a visual representation of the system being monitored. Understanding the components in a single line diagram, as reviewed in this course, helps the SCADA engineer to configure the system to accurately reflect the status of the electrical network. This helps with interlocking schemes for safe and reliable control of equipment. Improved performance leads to safer and more reliable power distribution.

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Protection and Control Engineer

A protection and control engineer designs and implements protection systems for electrical power systems. Single line diagrams are an essential part of this process, representing how protection devices, such as relays and circuit breakers, are connected and coordinated. This course may be useful for understanding the relay and metering single line diagrams, interlocking schemes, and various protection relays installed at feeders. This knowledge is directly applicable to designing and analyzing protection schemes to ensure the reliability and safety of electrical systems. The coverage of ANSI codes is also relevant for standardized protection practices.

See salaries and explore the career path for Protection and Control Engineer

Renewable Energy Engineer

A renewable energy engineer works on designing, developing, and implementing renewable energy systems. Single line diagrams are used to represent the electrical connections and components of these systems. This course may be useful for renewable energy engineers, specifically regarding the single line diagrams for wind power plants and the connections of wind turbines to loops. This knowledge is relevant for designing and integrating renewable energy sources into the power grid. The course’s coverage of topics like zigzag transformers will also be beneficial.

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Power Plant Operator

A power plant operator monitors and controls the equipment in a power plant to generate electricity. Single line diagrams are essential for understanding the electrical distribution system within the plant. This course may be useful for power plant operators, helping them to interpret the diagrams of components such as transformers, circuit breakers, and generators. Understanding interlocking schemes and protection relays can improve a power plant operator's ability to maintain stable and reliable power generation. The coverage of ANSI codes supports adherence to standardized operational practices.

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Power Systems Operator

A power systems operator monitors and controls the flow of electricity through the power grid. Single line diagrams provide a simplified view of the grid, allowing operators to quickly assess the status of the system and respond to disturbances. This course on single line diagrams helps a power system operator to interpret the diagrams of components like circuit breakers, isolators, and transformers. This knowledge allows for efficient operation of the power grid. Familiarity with interlocking schemes within single line diagrams contributes to safe switching operations.

See salaries and explore the career path for Power Systems Operator

Project Manager

A project manager in the electrical industry oversees the planning, execution, and completion of electrical projects. Single line diagrams communicate the system design and scope of work for the project. This course may be useful for project managers, helping them to interpret single line diagrams and understand the overall project requirements. The ability to extract relevant information from the diagrams is important for managing resources and ensuring successful project delivery. Furthermore, the single line diagram helps the project manager define the scope of work of a project.

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Power System Consultant

A power system consultant provides expert advice and services related to the design, analysis, and operation of electrical power systems. Understanding single line diagrams is essential for assessing existing systems and developing solutions for clients. This course may be useful for power system consultants as it reviews single line diagrams, particularly in identifying components, understanding protection schemes, and analyzing system configurations. They will be able to extract relevant information from single line diagrams.

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Electrical Inspector

An electrical inspector examines electrical installations and systems to ensure compliance with safety codes and regulations. Single line diagrams provide a simplified representation of the electrical system, enabling inspectors to quickly assess the overall design and identify potential issues. This course may be useful for an electrical inspector's understanding of single line diagrams, particularly in identifying components and understanding protection schemes. Therefore, this background assists them in conducting thorough and accurate inspections.

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Instrumentation and Control Technician

An instrumentation and control technician installs, maintains, and repairs the instruments and control systems used in electrical power systems. Single line diagrams are useful for understanding how these systems are integrated into the overall electrical network. This course may be useful for an instrumentation and control technician to interpret the location and function of instruments and controls within single line diagrams. Enhanced understanding of the single line diagram elevates professional effectiveness.

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Reliability Engineer

A reliability engineer analyzes and improves the reliability of electrical systems and equipment. Single line diagrams assist in understanding the system configuration and identifying potential failure points. This course may be useful for a reliability engineer's interpreting of single line diagrams, particularly in understanding protection schemes and interlocking. This knowledge assists them in assessing system vulnerabilities and implementing measures to improve reliability. The single line diagram is an essential tool for understanding power flow studies.

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Electrical Single Line Diagrams, Read & Understand

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