Protective Relaying Principles & Applications

The rapid growth of next generation power systems creates a real need for updates to protective relay systems to ensure enhanced security, dependability and effectiveness. Engage in comprehensive discussions and analysis about enhanced features of next generation protective relay systems that adapt to changing conditions. This course describes changes that will be implemented as the next generation power system is established.

Learn to apply microprocessor-based relays to detect voltage collapse. Utilize voting logic to minimize misoperations and explore applications that minimize neighborhood blackouts.

This course can be applied to the Electrical Engineering Certificate.


Anthony Sleva, PE

Anthony Sleva, PE

Mr. Sleva is President of Prescient Transmission Systems, a consulting company that focuses on innovations that are needed as energy production migrates to carbon free, renewable energy. He is involved with 1.) directing the development of new products and services ... read more

Who Should Attend

Analysts, designers, engineers and technicians involved with the design, development or utilization of transmission lines, distribution lines, substations or medium voltage motors as well as anyone involved in protective relay selection and application.

Benefits and Learning Outcomes

  • Learn to apply microprocessor-based relays to detect voltage collapse
  • Utilize voting logic to minimize misoperations
  • Explore applications that minimize neighborhood blackouts

Course Outline/Topics

Tools of the Trade

  • Three line diagrams
  • Single line diagrams
  • Zones of protection
  • Per unit system
  • Symmetrical components
  • Short circuit calculations
  • Current transformers – polarity and connections
  • Voltage transformers – polarity and connections
  • Circuit breaker tripping schemes
  • Redundancy
  • Dependability
  • Security
  • Reliability

Substation Protection

  • Transformer differential relays
  • Transformer overload relays
  • Bus differential relays
  • Ring bus differential considerations
  • Circuit breaker failure considerations
  • Shunt reactor protection
  • Shunt capacitor banks (series parallel can arrangements) protection
  • Arc flash considerations

Distribution System Protection

  • Overhead and underground lines
  • Phase time overcurrent relays
  • Phase instantaneous overcurrent relays
  • Ground time overcurrent relays
  • Ground instantaneous overcurrent relays
  • Steady state load limits
  • Cold load pickup inrush
  • Voltage recovery inrush
  • Coordination with downstream fuses
  • Coordination with downstream reclosers
  • Protection of Selected Equipment
  • Distributed generation considerations
  • Automated distribution system considerations

Transmission System Protection

  • Phase relays (Zone 1, Zone 2 and Zone 3)
  • Arc resistance
  • Steady state load limits
  • Transient load limits
  • Directional time overcurrent ground relays
  • Directional instantaneous overcurrent ground relays
  • Multi-terminal lines
  • Apparent impedance
  • Ground bank action
  • Series reactors

Communication-Aided Relaying Schemes

  • Permissive Over-reaching Schemes
  • Directional Comparison Schemes
  • Direct Transfer Tripping Schemes
  • Line Differential Schemes

Special Protection Schemes

  • Undervoltage protection
  • Transmission System Undervoltage Protection
  • Transmission System FIDVR Protection
  • Overvoltage protection
  • Voltage comparison
  • Overfrequency protection
  • Underfrequency protection
  • Large Motor Protection

Date: Tue-Thu, Oct 15-17, 2024

Delivery Method: In-person With Livestream

Time: 8am-4pm CT

Location: UWM School of Continuing Education or view on Zoom

Instructor: Anthony Sleva PE


$1,295 by Oct 1, 2024
$1,395 after Oct 1, 2024

CEUs: 2.1

Enrollment Limit: 20

Program Number: 4840-16263

Registration Deadline: Oct 8, 2024

Register Now


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