TITLE:
Simulation Study of Dynamic Fault Recovery Performance of VSC-HVDC System
AUTHORS:
Zi-Xia Cheng, Xiao-Feng Wang, Xi-Bo Wu, Gang Du, Fei-Yan Li
KEYWORDS:
VSC-HVDC; PSCAD/EMTDC; Fault Recovery; Dynamic Characteristics
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.3B,
July
31,
2013
ABSTRACT: The fault recovery of VSC-HVDC
transmission system is often influenced by many factors, such as the reactive
power compensation characteristics of the inverter and the dynamic performance
of DC controllers. In this paper, the PSCAD/ EMTDC simulation tool is used to
study the dynamic recovery performance of VSC-HVDC system for several different
var compensating devices in VSC-HVDC inverter-Fixed capacitor (FC), Static Var
compensator (SVC), and Static synchronous compensator (STATCOM) when VSC-HVDC
is subject to various faults, including three phase groundings, single phase grounding and three phase
breakings. The result shows
that the recovery process of the whole system will be slowed down due to its
negative influence on the strength of AC power system with the application of
SVC, while the STATCOM can improve VSC-HVDC recovery performance greatly for
its advantages over other compensating devices in areas such as voltage support
ability and DC power recovery.