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1. (WO2018041589) PROTECTION APPARATUS

Pub. No.:    WO/2018/041589    International Application No.:    PCT/EP2017/070328
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 11 01:59:59 CEST 2017
IPC: H02H 3/00
H02H 7/26
H02H 3/08
H02H 3/40
Applicants: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventors: HA, Hengxu
YANG, Lian
Title: PROTECTION APPARATUS
Abstract:
There is provided a protection apparatus for protecting an electrical network (20). The protection apparatus comprises: at least one protection device configured to protect the electrical network from a fault in response to a or a respective protection criterion being met; and a controller (34, 36) configured to: receive real-time information on a change in topological structure of the electrical network (20); perform an online determination of the real-time impedance or admittance matrix of the electrical network (20) based on the change in topological structure of the electrical network (20); and adapt the or each protection criterion based on the real-time impedance or admittance matrix.