Koordinierte Strom- und Spannungsausgleichssteuerung mit Ht (hybrid Transformator), insbesondere in Verteilnetzen

Details

Veröffentlichungs-Nr.

EP4815240

Anmeldetag

28. März 2025

Veröffentlichung

30. September 2026

Rechtsraum

EP

IPC

H02J3/18, H02J3/26, H02M7/00

Abstract

The disclosure provides a method for controlling a hybrid transformer, HT, comprising an electric line with a plurality of phases, a first transformer connected to the electric line in series, and a converter module connected on a first side to the electric line in shunt, and a second side of the converter module, opposite to the first side, being connected to the first transformer; wherein the converter module comprises a shunt connected converter with an alternating current, AC, side which is the first side of the converter module, and the converter module further comprises a series connected converter with an AC side of the series connected converter which is the second side of the converter module, wherein a direct current, DC, side of the shunt connected converter is connected to a DC side of the series connected converter by a DC link, the method comprising: obtaining: a first voltage of each of the plurality of phases of the electric line at a first point of common coupling, PCC, where the shunt connected converter is connected to the electric line in shunt, a second voltage of each of the plurality of phases of the electric line at a second PCC, where the first transformer is connected to the electric line, and a first current of each of the plurality of phases of the electric line at the second PCC; determining a voltage imbalance and/or a current imbalance based on the obtained first voltage, second voltage and/or first current; and controlling, based on the determined voltage imbalance and/or current imbalance, the shunt connected converter to inject an injection current and/or the series connected converter to inject an injection voltage for balancing the magnitudes and/or phase angles of a voltage and/or a current between the plurality of phases of the electric line.

Anmelder

Firma

Hitachi Energy Ltd

Land

🇨🇭 Schweiz

Fachgebiete