Blindleistungsunterstützung durch eine Gleichstromlast

Details

Veröffentlichungs-Nr.

EP4554032

Aktenzeichen

EP23208534

Anmeldetag

8. November 2023

Veröffentlichung

14. Mai 2025

Rechtsraum

EP

IPC

H02J3/16H02J3/18

Abstract

A reactive power supporting method for a DC load system (1) in an AC network (2), the DC load system (1) comprising a DC load unit (3) and a tapped transformer (4) with a tap changer (5) comprising several tap positions (6), a primary side (7) of the tapped transformer (4) being connected to the AC network (2) and a secondary side (8) of the tapped transformer (4) being connected to the DC load unit (3) via a rectifier (9) for supplying DC power to the DC load unit (3) with an input voltage to the rectifier (9) determined by the selection of a tap position (6) and a firing angle of a phase fired control (10), wherein if frequency or voltage of the AC network (2) are exceeding or falling below specified limits, the tap position (6) is selected such that the firing angle is as small as possible and thus the reactive power is minimized. The invention is also about a DC load system (1) with a reactive power supporting function for an AC network (2).

Anmelder

Firma

Siemens Energy Global GmbH & Co. KG

Land

🇩🇪 Deutschland

Fachgebiete