Comparative Feasibility Studies of High Voltage Circuit Breaker Operating in the LFAC System With Different Frequencies

With the development of flexible low frequency transmission technology following improvement offshore wind power transmission, it is great significance to investigate operation adaptability main equipment especially under conditions. A comparative study was performed in present work discuss dynamic performance a 252 kV/50 kA puffer-type circuit breaker influenced by system operational frequency. Since decreased would result longer arc duration, pre-designed driving mechanism with characteristics high speed control proposed and compared conventional unit. Moreover, as one reasonable indicators evaluate interruption breaker, critical rate rise recovery voltage (RRRV) that can withstand after extinguishment different frequencies were computationally obtained an established model. The effects change on during comprehensively discussed well could reasonably provide technical optimisation for low-frequency-based further engineering applications analysing its feasibility.