Fundamental of Electrical Power System Protection | Download Udemy Free Courses

April 29, 2021 mkfiletechy65 , No Comments

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Fundamental of Electrical Power System Protection

What you’ll learn

  • 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 equipments 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
  • 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 its 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, 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
  • 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 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.
  • What is star point towards line and bus means
  • Understand Accuracy limit factor & Name plate 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 a 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

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