Control method for direct-current transmission

H - Electricity – 02 – M

Patent

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Details

IPC codes

H02M 7/757 (2006.01) H02J 3/36 (2006.01)

Type

Patent

Patent number

CA 2623263

Description

The invention relates to a method for controlling a rectifier (7) and an inverter (9), which are connected together by means of a direct current circuit (8), in the region of power distribution and power transmission, wherein a measuring direct current voltage (Udc_a, Udc_b) and respectively, a measuring direct current (Idc_a, Idc_b) are measured on at least one measuring point (12, 13) of the direct current circuit (8) and are transmitted to a direct current control (15) in order to control the rectifier (7) and/or on an inverter control (16) in order to control the inverter (9). The direct current control (15) controls the rectifier (7) in such a manner that the total of the difference direct current voltage (du) and the differential direct current (di) is minimal and the inverter control (16) of the inverter (9) in controlled in such a manner that the difference between the differential direct current (di) of the differential direct current voltage (du) is minimal. Said method is reliable and is economical. According to the invention, the desired flow (Idco) of the direct current control (15) and the desired flow (Idco) of the inverter control (16) are identical.

La présente invention concerne un procédé pour régler un redresseur (7) et un onduleur (9) qui sont reliés par un circuit à courant continu (8), dans le domaine de la répartition et de la transmission d'énergie, une tension continue de mesure ( Udc_a, Udc_b) et un courant continu de mesure (Idc_a, Idc_b) étant mesurés respectivement en au moins un emplacement de mesure (12, 13) du circuit à courant continu (8), et transmis à un système de réglage de redresseur (15) pour permettre le réglage du redresseur (7) et/ou à un système de réglage d'onduleur (16) pour permettre le réglage de l'onduleur (9), le système de réglage de redresseur (15) réglant le redresseur (7) de sorte que la somme de la tension continue différentielle (du) et du courant continu différentiel (di), est minimale, et le système de réglage d'onduleur (16) réglant l'onduleur (9) de sorte que la différence entre le courant continu différentiel (di) et la tension continue différentielle (du), est minimale. L'invention a pour objet de mettre au point un procédé de ce type, qui s'avère fiable et peu coûteux. A cet effet, le courant théorique (Idco) du système de réglage de redresseur (15) et le courant théorique (Idco) du système de réglage d'onduleur (16) sont identiques.

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