| Abstract |
It can be stated that solid-state circuit breakers provide significant
advantages compared to mechanical
switches. Nevertheless, it is unlikely that the existing detection systems and the coordination of breakers will be changed in the near future. Consequently, it is of
utmost importance to take the present grid structure into account, and to adapt solid-state switches for the most useful applications in the existing systems. In this paper, the existing error detection
systems are briefly described.
Subsequently different topologies for the integration of fast switches into today’s grids are presented. For most applications, the use of a current limiter is the only way to use solid-state circuit breakers in present medium-voltage grids. Different current limiter topologies are presented and compared for several applications. Finally, one special application for a solid-state switch in a grid is shown. In this case, no limiter is needed and the advantages of solid-state breakers offer significant power quality
improvements compared to present-day mechanical breaker systems. |
