Impedanz- und Admittanzsschätzung über einen Ht (hybrid Transformer)

Details

Veröffentlichungs-Nr.

EP4815241

Anmeldetag

28. März 2025

Veröffentlichung

30. September 2026

Rechtsraum

EP

IPC

H02J3/18, H02J3/24, H02M7/66

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: generating one or more electric perturbations in the electric line; obtaining: a first voltage of the electric line at a first point of common coupling, PCC, where the shunt connected converter module is connected to the electric line in shunt, wherein the first voltage is influenced by the one or more electric perturbations, a second voltage of the electric line at a second PCC, where the first transformer is connected to the electric line, wherein the second voltage is influenced by the one or more electric perturbations, and/or a first current of the electric line at the second PCC, wherein the first current is influenced by the one or more electric perturbations; and determining an impedance and/or an admittance based on at least one of the one or more electric perturbations, and the obtained one or more of the first voltage, the second voltage and the first current.

Anmelder

Firma

Hitachi Energy Ltd

Land

🇨🇭 Schweiz

Fachgebiete