RT Journal Article
A1 Qiang Huang
A1 Guibin Zou
A1 Chunhua Xu
A1 Jie Zhang
A1 Shuo Zhang

PB iet
T1 Fast single-end line protection method for the meshed multi-terminal HVDC grid
JN The Journal of Engineering
VO 2019
IS 16
SP 1602
OP 1606
AB In view of the short-circuit fault characteristics, the protection technique of the dc lines limits the development of the modular multi-level converter (MMC)-based HVDC grid in a large extent. This study derives the calculation formulas of the transient voltages of internal and external faults and proposes a single-end protection scheme based on the transition period (TP) from the abrupt changing point to the first extreme point of the fault voltage. Due to the current-limiting reactors, the TP of the internal fault is much shorter than that of the external fault, which is used to discriminate internal fault from external fault. A four-terminal symmetrical bipolar HVDC grid based on MMC is modelled using PSCAD/EMTDC, and simulation results demonstrate the validity of the new proposed dc transmission line protection method.
K1 EMTDC
K1 internal faults
K1 short-circuit fault characteristics
K1 dc transmission line protection method
K1 TP
K1 fault voltage
K1 PSCAD
K1 external faults
K1 single-end protection scheme
K1 current-limiting reactors
K1 four-terminal symmetrical bipolar HVDC grid
K1 abrupt changing point
K1 multilevel converter-based HVDC grid
K1 transition period
K1 transient voltages
K1 MMC
K1 fast single-end line protection method
K1 meshed multiterminal HVDC grid
K1 protection technique
DO https://doi.org/10.1049/joe.2018.8722
UL https://digital-library.theiet.org/;jsessionid=c4ldod6m829i9.x-iet-live-01content/journals/10.1049/joe.2018.8722
LA English
SN
YR 2019
OL EN