engleski

Analysis of transient recovery voltage on SF6 circuit breakers when switching unloaded 400 kV transmission lines – comparison between EMTP-RV simulations and on-site measurements

This study presents analysis of transient recovery voltage (TRV) on SF6 circuit breakers (CBs) when switching unloaded 400 kV transmission lines. On site testing of circuit breakers was performed when switching unloaded 400 kV transmission lines. Switching was performed with and without grading capacitors connected in parallel to CB breaking chambers. Calculation results were compared to on-site measurements.

switching overvoltages ; SF6 circuit breakers ; transient recovery voltage

Study was performed for EDF (Électricité de France).