US 12,007,452 B2
Locating a ground fault in a DC system
Hubert Schierling, Erlangen (DE); and Benno Weis, Hemhofen (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 17/439,110
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Mar. 6, 2020, PCT No. PCT/EP2020/056010
§ 371(c)(1), (2) Date Sep. 14, 2021,
PCT Pub. No. WO2020/187608, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 19163394 (EP), filed on Mar. 18, 2019.
Prior Publication US 2022/0146594 A1, May 12, 2022
Int. Cl. G01R 31/52 (2020.01); H02H 1/00 (2006.01); H02H 3/04 (2006.01); H02H 3/16 (2006.01); H02H 7/26 (2006.01)
CPC G01R 31/52 (2020.01) [H02H 1/0007 (2013.01); H02H 3/042 (2013.01); H02H 3/16 (2013.01); H02H 7/268 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for locating a ground fault in a DC system to which a plurality of load zones are connectable, the method comprising:
defining a time window; and
assigning, after detection of the ground fault, the ground fault to a load zone connected to the DC system, within the time window defined before detection of the ground fault, wherein
upon the plurality of load zones being connected to the DC system within the time window defined before the detection of the ground fault, the ground fault is assigned to one of the plurality of load zones connected to the DC system relatively latest within the time window.