Advanced optimisation Techniques for eco-efficient Circuit Breaker Design - Applications to a newly developed 245 / 300 kV SF6-free High Voltage Circuit Breaker

The paper outlines the initial design phase utilizing an automated workflow that integrates 2D/3D simulation tools and multi-objective optimization techniques. These methods enable parameter optimization for arc interruption, addressing both structural and functional aspects of the circuit breaker. Three levels of detail are identified:

1. high level design technology screening, e.g. puffer vs self-blast technologies 2. dielectric shielding arrangement and positioning inside the circuit breaker 3. shape optimizations e.g. of shields or of flow guiding features (typically, for exhaust design)

By leveraging these advanced optimization techniques and simulation tools, we significantly reduce the time, number of physical tests, and environmental resources required during the development process. This approach also allows for rapid assessment of whether a particular technology is suitable for a specific application, streamlining the decision-making process and minimizing unnecessary experimental iterations and delays.

Furthermore, a postprocessing tool for 3D dielectric simulation results is presented. It substantially reduces the time needed to document the robustness and reliability of a design.

The comprehensive overview provides valuable insights for end users regarding the design of modern high voltage SF6-free circuit-breakers, paving the way for greener electrical power systems.