Skip to Main Content
This paper investigates the steady-state and transient performance of high-voltage DC (HVDC) transmission systems based on modular multilevel voltage source converters. The study involves analysis of active-reactive power capabilities (P-Q envelope) including active power reversal and provision of voltage support to AC networks. The transient performance is explored by examining the VSC-HVDC response to external AC faults. The stability of cell capacitors during power reversal and AC faults is also examined.
Date of Conference: 19-21 Oct. 2010