TY - PAT
T1 - Fault protection for voltage source converters
AU - Chivite-Zabalza, Francisco
AU - Trainer, David
AU - Nicholls, Jonathan
AU - Vershinin, Konstantin
AU - EFIKA, Ikenna
AU - Moreno, Francisco
AU - Outram, John
AU - Ginnareddy, Rajseker
N1 - CPC
H02H7/10 (GB); H02H7/1225 (GB); H02J3/36 (EP,GB,US); H02J7/345 (US); H02M1/32 (EP,GB,US); H02M1/34 (US); H02M7/483 (GB); H02M7/797 (GB,US); H02M2001/325 (US); H02M2001/348 (US); H02M2007/4835 (EP,US); H02M7/49 (US); Y02E60/60 (EP,US);
Priorities
GB201603733A·2016-03-03
Application
GB201603733A·2016-03-03
Publication
GB2547936A·2017-09-06
Published as
CN108781035A;CN108781035B;EP3424137A1;GB2547936A;US10560014B2;US2019028021A1;WO2017148980A1
PY - 2016/4/20
Y1 - 2016/4/20
N2 - Fault protection of a voltage source converter (VSO) comprising a chain-link circuit 103 in series with a director switch 104. The chain-link circuit comprises a plurality of cells 106, each comprising an energy storage element, a plurality of cell switching elements 109 such that the energy storage element can be selectively connected in series between terminals of the cell or bypassed, and a cell switching element controller 501, 502. The director switch comprises a plurality of director switch units 202, each having a director switching element 110 and a director switch unit controller 503. Each cell switching element controller monitors for a fault current and, if detected, turns-off its associated cell switching element and reports a fault event to a fault controller 504. Each director switch unit controller also monitors for a fault current and, if detected, reports a fault event to the fault controller, but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for any reports of fault events and, in the event of a fault occurring, orders all of the cell switching elements of at least some of the plurality of cells to turn-off.
AB - Fault protection of a voltage source converter (VSO) comprising a chain-link circuit 103 in series with a director switch 104. The chain-link circuit comprises a plurality of cells 106, each comprising an energy storage element, a plurality of cell switching elements 109 such that the energy storage element can be selectively connected in series between terminals of the cell or bypassed, and a cell switching element controller 501, 502. The director switch comprises a plurality of director switch units 202, each having a director switching element 110 and a director switch unit controller 503. Each cell switching element controller monitors for a fault current and, if detected, turns-off its associated cell switching element and reports a fault event to a fault controller 504. Each director switch unit controller also monitors for a fault current and, if detected, reports a fault event to the fault controller, but the director switch unit control keeps its associated director switching element turned-on. The fault controller monitors for any reports of fault events and, in the event of a fault occurring, orders all of the cell switching elements of at least some of the plurality of cells to turn-off.
KW - fault protection
KW - voltage source converters
KW - high voltage power distribution
UR - https://worldwide.espacenet.com/patent/search/family/055858981/publication/GB2547936A?q=GB2547936A
M3 - Patent
M1 - GB2547936A
Y2 - 2016/03/03
ER -