Title:
IMPROVEMENTS IN OR RELATING TO PROTECTION CIRCUITS
Document Type and Number:
WIPO Patent Application WO/2022/106311
Kind Code:
A9
Abstract:
In the field of High Voltage Direct Current (HVDC) power transmission networks, there is a need for an improved protection circuit to protecting a whole or part of such a network. A protection circuit (10; 100), for protecting a whole or part of a HVDC power transmission network (12; 102), comprises a plurality of sets (24, 30; 108, 114, 120) of sensors (26i, 26a, 263, 264; 26s, 286, 267, 26»), each of which set (24, 30; 108, 114, 120) defines a respective protection zone (28, 32; 110, 116, 122). The protection circuit (10; 100) also includes a controller (34) that is programmed to evaluate sensor information received from the sensors (26i, 26a, 263, 264; 26s, 266, 267, 268) to determine whether a fault has occurred within a protection zone (28, 32; 110, 116, 122). The controller (34) is further programmed, in the event of a sensor (26i, 26a, 26a, 264; 26s, 26e, 267, 26e) in a protection zone (28, 32; 110, 116, 122) failing, to dynamically reconfigure the affected protection zone by including a sensor (26i, 26a, 263/ 264; 26s, 26e, 267, 268) from another protection zone (28, 32; 110, 116, 122).
Inventors:
OCHOA ISMAEL (GB)
Application Number:
PCT/EP2021/081516
Publication Date:
August 04, 2022
Filing Date:
November 12, 2021
Export Citation:
Assignee:
GENERAL ELECTRIC TECHNOLOGY GMBH (CH)
International Classes:
H02H7/26; G01R31/08; H02H1/00; H02H3/05; H02H3/33
Attorney, Agent or Firm:
MITCHELL, Darren Andrew (GB)
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