What you’ll learn
Fundamental of Electrical Power System Protection
Introduction to Electrical Protection Philosophy
Going through the history of the power system network
Advantages & Disadvantages of Power Network
Introduce to the concept of SCADA, Smart Metering, Micro Grid
Introduction to Cascade Faults in network
How Power Quality of Network is assessed
Briefing on Flase Tripping due to poor relay coordination
What is the meaning of localization of fault
What are Fault & Even Records
Fault investigation
What is the Comtrade file
Synch & Auto Reclosing, Power Swing
What is required to protect
Step & Touch Potential Hazards
Lighting Protection Explained
What is the purpose of protection
Step Potential Hazard near the fallen conductor
Reason for Massive Blackouts and how to avoid them
How to Limit damage
Why Gravel is laid in AIS
A voltage or Current Which is lethal
Introduction to earth leakage Relay
Protection System Characteristics Selectivity. Sensitivity. Speed. Reliability. Simplicity. Economy.
Relationship of Sensitivity and relay burden
Which relay has more burden 1 Amp of 5 Amp?
Identify what primary, secondary, and control equipment are
The difference among Circuit Breaker, Isolator & Load Break Switch
System Primary Components, Lighting Arrestor, CT, VT CB, Isolator, Busbar, Lighting Mast, AIS, GIS, T/F, MV SWGR, Batteries, Chargers
Introduction to Single Line Diagram
The Introduction of Schematics / Detail Drawings
Introduction to Interlock Logic Diagram
Explained GIS, LCC, Gas Diagram, Gas compartment
Explained basic components Harting Plug, terminal block Din Rail
Auxiliary Relays and their type
Magnetic Contactors
Main Relays & Protection Panels
What is Burden and how to find relay rated burden
Engineering Design Phase intro
Manufacturing & Delivery Phase intro
Installation Testing & Commissioning Phase
Maintenance Phase, the concept of life cycle cost, maintenance cost
What are Zones of Protection, Zone Overlapping, Primary & Backup protection, duplicate protection
Feeder, motor, Generator & Line protection Zone by example
Understand Selectivity & Zones of protection
How Zones help to localize the fault
What is the meaning of close & open zone
Tele Protection, Backup protection at local & Remote location
Understanding how different elements of Protection system operates
Classification of Relays
Electromechanical, Digital, Microprocessor based & Numerical Relays freecoursesite
Attracted Armature Type, Plunger Type, Induction Disk type, Induction cup type, D´Arsonval unit, Thermal Relays
Interposing C.T, Phase & Ration Compensation requirements for transformer differential protection
Intro to Sensor, SF6 Gauges, Winding & Oil Temperature Gauges, Pressure relief device, sudden pressure device, Buchholz Relays
Introduction to a definite time and inverse time Over Current Relays
Introduction to Directional Over Current Relays
Introduction to Magnitude & Differential Protection
What are phase comparison relays and how they operate
Introduction to breaker fail & busbar protection
Factors Influencing Relay Performance
Basic Electrical Theory, Ohm’s Law, Kirchhoff’s Current Law, Kirchhoff’s Voltage Law, Per unit System
How to calculate three-phase power, rated primary and secondary current of Power transformer
How to calculate short circuit MVA, short circuit HV & LV current of the transformer
Calculate Arc flash Hazard of transformer
Understanding Phases, Balance & Unbalance System, Three Phase, Phase to Phase & Single Phase Faults
Understanding Symmetrical Components
Current Transformer, Types, polarity, Saturation, ratio, error of C.T, Metering & Protection Core, Knee Point, Burden
Why C.T should never be open-circuited, Why C.T secondary is grounded, Why Single point earthing is done. freecoursesite
What is star point towards line and bus means
Understand Accuracy limit factor & Nameplate of C.T, Classes of C.T
Voltage transformer & its type, Error in voltage transformer, what is CCVT,
Ferro Damping & Compensating Reactor in CCVT, Why V.T secondary is grounded, Why Single point earthing is done.
Metering & Protection Core of V.T, Accuracy class, How to connect V.T secondary, Star & Open delta connections
Voltage Drop in V.T circuit, Voltage Factor, Ferro-Resonance in Magnetic Voltage Transformer
Substation Batteries, Why Batteries are required, types of batteries
How to measure the capacity of Battery, What mean by AH, Specific gravity, Hydro Meter, Voltage per Cell & per bank
Explained DC system Single Line Diagram, How to do Maintenance of Batteries
Battery Charger, What is charger scheme in substation, Dropping Diodes, Terminal voltage, Float Boast & Trickle Charging,
Understanding Single Line Diagram of Charger
The ground of DC System, Why it is required, How it is done, DC Earthing problem in substation
What are capacitor storage trip units
Introduction to ANSI device numbers
Relays Application for Feeder, Generator, Motor, transformer, busbar. Which type of protection relays are installed
Concept of internal, external & through the fault
Why transformer differential is different from Busbar differential
Introduction to Circuit Breaker, types of the circuit breaker, Bulk oil circuit-breaker B. Minimum oil circuit-breaker C. Air blast circuit-breaker D. Vacuum circuit-breaker E. SF6 circuit-breaker F. HVDC circuit-breaker
Understand Circuit Breaker Operating Cycle
Circuit Breaker, Anti pumping, Pole discrepancy, Trip Circuit Supervision Schemes
Identify what primary, secondary, and control equipment are
Explain how an overcurrent & earth fault relay operates
Explain how the currents and voltages vary during all three-phase fault conditions
Draw what an electrical protection system looks like
Equip a protection panel and identify all of the main equipment
Understand the requirements for a current transformer
Requirements
The basic electrical principles
A basic understanding of electrical engineering
Description
Protection & control systems are a critical part of the transmission & distribution systems that feed power to megacities & industries.
This course aims to introduce all of the basic principles associated with electrical power systems protection with examples. freecoursesite
I have tried my best to include a practical example from the field as I have 17 years of field experience in substations. I have included real examples, equipment nameplate, Single line diagram, real field examples.
The course will go into detail for the following key topics:-
· Introduce all of the key concepts of a protection system, power quality, reliability, fault & event recording.
· Show the basic principles behind electrical protection philosophy
· Explained cascade tripping, Comtrade files, how to localize the faults
· Look at step & touch potential concept, Voltage or Current which is lethal
· Why gravel is used in substation, How to protect equipment & human
· Look at Earth Leakage Relay, How it operates
· Understand protection philosophy, A)Selectivity. B) Sensitivity. C) Speed. D) Reliability. E) Simplicity. D)Economy.
· Relationship between selectivity and zones of protection. open & close zones, tele protection
· Look at Primary, backup & duplicate protection
· Look at relay classification, Electromechanical, Digital, Microprocessor & Numerical relays
· What are phase & ration compensation in transformer differential protection, interposing C.Ts
· How Over Current, Earth fault relay operates
Fundamental of Electrical Power System Protection – Freecoursesite
· How Direction Overcurrent relay, Definite time & inverse time overcurrent relay operates.
· Understand Magnitude, differential & phase comparison principles
· look at the working principle of Breaker failure relay
· look at the basic electrical theory, Ohms Law, KVL, KCL, Calculate HV & LV rated & short circuit current transformer
· Introduction to the per-unit system, how to evaluate arc flash hazard using the per-unit system
· look at three-phase systems, balanced, unbalanced, three-phase fault, phase to phase fault, phase to ground fault
· Understand Symmetrical components
· Look at primary & secondary equipment, electrical wiring basics
· Understand Auxiliary relays, Main relays, Contactors
· Difference between Circuit Breaker & Isolator & Load Break Switch
· Understand the concept of interlocking
· Understand surge arrestor & surge counter
· look at GIS, AIF & MV SWGR
· Look at CB operating cycle, pole discrepancy, anti pumping, trip circuit supervision schemes.
· Intro to ANSI device codes
· Introduction to internal, external & through faults
· Look at Capacitor Storage trip units
· Show batteries & charger, how they work, Single Line Diagram of DC system, Single Line Diagram of Charger
· look at LCC, Gas diagram, Gas compartment, Gas permeable & Gas tight
· introduction to Relay Coordination
· Look at complete protection engineering cycle Design Phase, Manufacturing Phase, Shipment Phase, Inspection, T&C, Maintenance
· Look at three-phase currents and see how they can be broken down into sequence components and harmonics.
· Provide the basic principles behind current transformers, how they operate and need to be connected
· Show how voltage transformers operate and introduce the key types
· Go into detail on what happens when a fault occurs on the system
Fundamental of Electrical Power System Protection – Freecoursesite
· Look into circuit breaker control and protection systems and how they interact with the protection systems.
· The main protection relay we will look at on this course is over protection. We go into detail on the basic and more advanced versions and show how this relay can be put to good use to provide great fault discrimination
· Look at the different types of earth fault relays and see how they can be used to protect some key equipment\s
By the end of the course, the student will be able to identify all of the key components of a protection & control system, understand how all of these components fit together to create a fully integrated system, protection fundamental concept, protection schemes & relays, battery charger & batteries.
Remember that Udemy offers a 30-day money-back guarantee. I am also always available for questions while you go through the course to ensure everything is clear.
See you in the course!
Who this course is for:
- Electrical Engineering Undergraduates
- Electrical Engineering Graduates
- Technicians
- Power/Utility Engineer
- Anyone interested in electrical engineering
1. Introduction
1. Introduction to Power Networks
2. Understanding Power Quality
2. Protection Philosophy
1. How to avoid power failure, practical example of root cause Analysis