Course Catalogue.

After participating in this course, you will be able to:

• Understand the events and risks from transient recovery voltage (TRV).
• Gain familiarity with the management of the effects of transient recovery voltage.
• Provide cost-effective solutions for mitigating effects of transient recovery voltage.
• Understand the key principles and concepts regarding effects of transient recovery voltage.

Description
Transient recovery voltage is the voltage that appears across the terminals of a pole of a circuit breaker after interruption. Circuit breakers can fail to interrupt fault current when the power system connected has transient recovery voltage characteristics that exceed the rating of the circuit breaker. The actual shape of the transient voltage is determined by the connected lumped and distributed inductive and capacitive parameters defined by the connected bus equipment. Managing the transient recovery voltage phenomena is of primary importance for a successful current breaking, as there is a risk of arc re-ignition leading to severe thermal stresses on the electrical apparatuses, should the breaker fail to interrupt a short circuit current.

This presentation will provide a background in transient recovery voltage for those people responsible for the reliability of power distribution and transmission systems as well as substations. The presentation places emphasis on assisting attendees with an understanding of the key principles and concepts regarding transient recovery voltage in the power systems. Identification and discussion of procedures and calculations necessary to apply the standard transient recovery voltage ratings for ac high-voltage circuit breakers based on the IEEE standards will be presented.

This presentation will also provide information on how to reduce the risk of circuit breaker failure, minimize outages, improve system reliability and reduce costs.

Course Outline

• Transient Recovery Voltage
• Circuit Breaker Types
• General Considerations
• Standards
• Circuit Breaker Capability
• Example of TRV Study
• Mitigation Solution
• Conclusions

Who Should Attend

• Municipal, Provincial and Federal Government Engineers and Managers
• Design Engineers
• Design Technicians
• Engineers in Training
• Power Engineers
• Consulting Engineers
• Project Engineers
• Electrical and Mechanical Engineers
• Project Managers
• Plant Managers
• Operating and Maintenance personnel Commissioning and Testing Engineers
• Electrical Contractors