973 / 2019-04-30 23:34:54

Analysis of Application of Superconducting Current Limiter to AC line of HVDC Invert

communication failure,current limit,hybrid grid,SCFCL

In LCC-HVDC hybrid grid, commutation failure is an important factor affecting system stability. When there is a fault or a large voltage fluctuation in AC line of LCC-HVDC, a commutation failure will occur. Fault current limiter (FCL) can limit the fault current and prevent commutation failure. But ordinary FCLs have large power loss or affect the dynamic characteristics of the system. Superconducting current limiters (SCFCLs) can greatly reduce the power loss during normal time without affecting the dynamic performance of the system.
This article describes the various types of SCFCLs and their limitations for this scenario. And by building simulation models of SCFCLs applied to AC line of LCC-HVDC invert, analyze the effect of various SCFCLs on the hybrid grid.