Protective Relay Training

Our course, Protective Relay Training, focuses on the protection of distribution power systems and an understanding of system faults and their detection, as well as their safe disconnection.

This Protective Relay Training course presents a comprehensive and systematic description of the concepts and principles of operation and application of protection schemes for various power system elements. Our Protective Relay Training course begins with an overview of power system faults, short circuit calculations, components of power system protection schemes, as well as a full session on microprocessor-based protective relays and their application.

This Protective Relay Training course has been specifically designed for electric utility engineers, consultants and others involved in the selection and coordination of overcurrent protective devices used in medium-voltage electric power distribution systems. Facilities engineers engaged in the selection of devices for protecting small power transformers, as well as the coordination of those devices with both source-side and load-side protective devices, will also benefit from the seminar.

This course deals with protection systems from a practical perspective, and includes important functional aspects such as testing and coordination of protection systems.

LEARNING OUTCOMES

• Enhance your knowledge of basic electrical system protection techniques including fault analysis
• Further your understanding of protective devices
• Understand problems generally faced and solutions successfully adopted by industry
• Learn to calculate the basic fault currents flowing in any part of the electrical system
• Improve your electrical system protection against faults and overvoltages

Day 1
Start time: 7:30 am
Lunch break: 12 noon- 1 pm
Adjournment: 3:30 pm

Power System Faults

• Different types of faults
  
• Incidence of faults on power system equipment
  
• Effects of power system faults
  
• Magnitude of fault current, short circuit calculations
  
• Detection of faults
  
• Clearance of faults
  
• Requirements of protective relaying systems
  

Short Circuit Theory

• Effects of short circuit
  
• Fault current sources
  
• Machine reactor modeling
  
• Fault current characteristics
  

Fault Studies

• Equipment ratings
  
• Asymmetric factors
  
• Purposes of fault calculations
  
• Types of faults
  
• Modeling methods
  
• Fault calculations
  

Components of Power System Protection Schemes

• Fault detecting relays
  
• Tripping relays and other auxiliary relays
  
• Circuit breakers - bulk oil, air-blast, vacuum, SF6
  
• Current Transformers
  
• Voltage Transformers
  
• Ground Transformers
  
• The transition from electro-mechanical relays to electronic and digital microprocessor-based relays
  
• The application of programmable logic controllers
  
• Modern microprocessor-based relays: review of types
  available
  

Current Transformers (CTs) & Voltage Transformers (VTs)

• Various types of CTs, VTs & CVTs
  
• Theory and characteristics of CTs
  
• Application requirements of CTs for protective relaying
  
• Accuracy classifications
  
• Future trends in CT design
  
• Testing of CTs and VTs
  

Day 2

Start time: 7:30 am
Lunch break: 12 noon - 1:00 pm
Adjournment: 3:30 pm

Co-ordination of Electrical Protection Systems

• Fuse to fuse
  
• Circuit breaker to fuse
  
• Fuse to circuit breaker
  
• Back up protection
  
• Limitation of fault current
  
• Selective zones of protection
  
• Types of bus protection schemes
  
• Basic concept of differential protection
  
• Application to various bus configurations
  
• Applications to switchboards
  
• Testing of bus protection schemes
  
  Feeder Overcurrent Protection
  
  • Protective relaying requirements for loop and radial systems
    
  • Elements of feeder protection schemes
    
  • High set, low set, and inverse -timed elements
    
  • Co-ordination with other devices and fuses
    
  • Auto-reclosing of feeder circuit breakers
    
  • Various types of overcurrent relays
    
  • Electromechanical, electronic & digital relays
    
  • Relay setting criteria
    
  • Testing of overcurrent protection schemes
    
  
  Day 3
  Start time: 9:30 am
  Lunch break: 12 noon - 1:00 pm
  Adjournment: 3:30 pm
  
  Transformer Protection
  
  • Overcurrent and ground-fault protection
    
  • Application of differential protection to transformers
    
  • Gas relays, pressure and gas accumulation
    
  • Winding temperature and oil temperature devices
    
  • Testing of transformer protection schemes
    
  • Modern microprocessor-based multi-function relays - available functions, application and testing
    

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  About The Electricity Forum

  The Electricity Forum has established its role as one of the nation's leading conference organizers on subjects of policy and technical common interest to electric power generators and large power consuming companies. With headquarters in Pickering, Ontario, The Electricity Forum is dedicated to providing cost-effective, highly specialized information in the format of forums, electrical training tutorials, and industry-wide events. Since 1986, more than 25,000 delegates from leading companies have attended our forums and seminars, including:

  • ATCO Electric
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