Bachelor or Semester Project Stress Analysis of Parts of an Experimental Circuit Breaker Contact: Mahir Muratovic Ofﬁce: ETL H34 Email: [email protected] Introduction Alternative gases are investigated to replace the strong greenhouse gas SF 6 , which is currently widely used as an insulation and arc quenching medium in high voltage substations. Currently, at ETH Zurich the project of benchmark test of SF 6 alternatives with the focus on arc quenching properties is underway. For the purpose of the project an experimental circuit breaker has been built. It is equipped with an overdi- mensioned drive system that will provide the required pressure build-up in the interrupter unit with the required contact speed. The design of the interrupter unit of experimental breaker is based on the design of a commercial breaker. Still, a stress analysis of the kinematic chain under dynamic load and a stress analysis of the linkage (between the drive and the circuit breaker) under static load is needed. Goal (Im)prove the design of kinematic chain of an experimental circuit breaker under the dynamic load and the design of linkage system under the static load Tasks • Create 3D models for some parts of the kinematic chain • Perform stress analysis of the kinematic chain of the experimental circuit breaker under dynamic load (using MSC Adams, ANSYS) • Perform stress analysis of the linkage between the circuit breaker and the drive under static load (using ANSYS) • Evaluate the results of stress analysis and improve the design of certain parts if necessary Type Theory: 20%, Simulation: 60%, Evaluation: 10%, Design: 10%

Bachelor or Semester Project Stress Analysis of Parts of

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Bachelor orSemester Project

Stress Analysis of Parts of an Experimental Circuit Breaker

Contact: Mahir Muratovic

Office: ETL H34

Email: [email protected]

IntroductionAlternative gases are investigated to replace the strong greenhouse gas SF6, which is currently widelyused as an insulation and arc quenching medium in high voltage substations. Currently, at ETH Zurich theproject of benchmark test of SF6 alternatives with the focus on arc quenching properties is underway.For the purpose of the project an experimental circuit breaker has been built. It is equipped with an overdi-mensioned drive system that will provide the required pressure build-up in the interrupter unit with the requiredcontact speed. The design of the interrupter unit of experimental breaker is based on the design of a commercialbreaker. Still, a stress analysis of the kinematic chain under dynamic load and a stress analysis of the linkage(between the drive and the circuit breaker) under static load is needed.

Goal(Im)prove the design of kinematic chain of an experimental circuit breaker under the dynamic load andthe design of linkage system under the static load

Tasks

• Create 3D models for some parts of the kinematic chain

• Perform stress analysis of the kinematic chain of the experimental circuit breaker under dynamic load(using MSC Adams, ANSYS)

• Perform stress analysis of the linkage between the circuit breaker and the drive under static load (usingANSYS)

• Evaluate the results of stress analysis and improve the design of certain parts if necessary

Type Theory: 20%, Simulation: 60%, Evaluation: 10%, Design: 10%