公开(公告)号：US20210194247A1

公开(公告)日：2021-06-24

申请号：US17056496

申请日：2018-05-18

Applicant: Siemens Aktiengesellschaft

Inventor： Andreas Lorenz ,  Ewgenij Starschich ,  Mustafa Baris Karacay

IPC: H02J3/36 ,  H02H3/42 ,  H02H3/16 ,  H02H3/087 ,  H02H3/44 ,  H02H3/02

Abstract: In a method for monitoring a high-voltage DC transmission the following are predefined: an amperage threshold value for an amperage of the high-voltage DC transmission, at least one interval length for time intervals and, for each predefined interval length, a change threshold value for a change in the amperage averaged over time intervals of the interval length. The amperage for each terminal of the high-voltage DC transmission is determined, and a change in the amperage averaged over time intervals of the interval length is determined for each predefined interval length. A DC error is determined if the magnitude of the amperage of at least one terminal is greater than the amperage threshold value or if, for an interval length, the magnitude of the averaged change in the amperage of at least one terminal is greater than the change threshold value predefined for the interval length.