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Electrical Protection Training – Level 1 (August 2024)
Instructor
HPI Train Hub
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Introduction:
This training addresses the basic methods, tools, and devices used in the field of power system protection.
Audience
This course is intended for technicians and individuals who require an overall understanding of power system protection.
Power System Basics
- Electrical Equipment Damage
- Power System Balanced Faults
- Introduction to Symmetrical Components (includes a class exercise)
- Power System Unbalanced Faults
- Relaying Fundamentals
- Instrument Transformers: CTs and VTs (includes a class exercise)
- Protective Relay Design
- Introduction to Line Overcurrent Protection
- Coordination of Overcurrent Protection in Radial Systems
- Line Directional Overcurrent Protection
- Transformer Overcurrent and Mechanical Protection
- Transformer Differential Protection (includes a class exercise)
- Bus Protection (includes a class exercise)
- System Aspects of Protection
- Fuse and MCCB protection
- Current and voltage transformers
- Primary injection testing
- Earthing of high voltage systems
- Basic fault level calculations
- Introduction to symmetrical components
- Classification and function of relays
- Inverse definite minimum time (IDMT) relays
- Calculation of graded time settings for IDMT relays
- Secondary injection testing
- Directional overcurrent and earth fault protection
- Differential protection
- Numerical relays
- Feeder protection
- Transformer protection
- Motor protection
- Generator protection
- Bus zone protection
- Trip circuit supervision requirements
- Standard marking of switchgear panel wiring
- Practical exercises
Course Objectives
At the conclusion of this course, students can:
- Explain the importance of symmetrical components in analyzing power systems.
- Identify the types of protective systems used for various applications.
- Define distribution protection principles.
- Describe how differential, overcurrent, and mechanical methods are used to protect power transformers.
- Use metering and event reporting functions from modern protective relay systems to monitor protection system performance.
- Several practical sessions using relays
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