Abb Technology Ltd

Abb Schweiz Ag

Asea Brown Boveri Ab

Abb Technology Ag

Area Brown Boveri Ab

Abb Power Grids Switzerland Ag

Mats Hyttinen

Gunnar Asplund

Tomas Lars Jonsson

Jan Svensson

Staffan Norrga

Frans Dijkhuizen

Thomas Alfred Paul

Axel Kramer

Navid Mahdizadeh

Wojciech Piasecki

Göran Eriksson

Nan Chen

Bernt Bergdahl

Jan Wiik

Lars Döfnäs

Ener Salinas

Michal Lazarczyk

Sari Laihonen

Helge Kolstad

Muhammad Nawaz

Soubhik Auddy

Francois Delince

Hongbo Jiang

Tor-Eivind Moen

Dimitris Giannoccaro

Mathias Ingold

Henrik Spjut

Uwe Riechert

Marcin Szewczyk

Radoslaw Jez

Peter Terwiesch

Peter Holmberg

Amel Lachichi

Mukherjee Subhasish

Bopparaju Gopichand

Carl Heyman

Ingold Mathias

Göran Brorsson

Erik Hansson

Per Miram

Pawel Dawidowski

Niklas Modig

Erik Persson

Jan R Svensson

Bengt Bergdahl

Embodiments are generally based on employing a power transmission line in a HVDC link to provide auxiliary power to one of the ends of the HVDC link for facilitating a black start thereof when the HVDC link is de-energized, i.e. when at least one of the HVDC converter stations is de-energized and there is no transmission of power between inverter and rectifier HVDC converter stations on each side of the HVDC link. A relatively small amount of power can be conveyed towards one of the HVDC converter stations via the power transmission line so as to provide power to any auxiliary system(s) of the converter station, for example prior to a black start of the converter station being carried out.

Power transmission arrangement and method for operating a power transmission arrangement

It is provided a power converter for transferring power between a high voltage DC connection and a high voltage AC connection. The power converter includes a power converter assembly including: a first converter arm, a first reactor, a second reactor and a second converter arm, connected serially between the positive and negative terminals of the DC connection. The high voltage AC connection is provided between the first reactor and the second reactor. Each one of the converter arms includes a plurality of converter cells and each one of the converter cells includes a switching element and an energy storage element. Both the first reactor and the second reactor are oil filled reactors.

Power converter with oil filled reactors

A filter apparatus includes at least one filter, each filter being tunable and including at least one capacitor arrangement. The capacitor arrangement includes a plurality of first capacitors, a plurality of second capacitors, and a plurality of switches. Each switch is switchable between a non-conducting mode and a conducting mode. The plurality of second capacitors and the plurality of switches are arranged to connect or disconnect the second capacitors on different potentials in order to tune the filter by adjusting the capacitance of the filter. An electrical power transmission or distribution system includes such a filter apparatus. A method is provided for filtering harmonics in an electrical power transmission or distribution system by means of such a filter apparatus.

Filter apparatus, a method for filtering harmonics in an electrical power transmission or distribution system, and such a system

An arrangement for controlling the electric power transmission in a high voltage direct current, HVDC, power transmission system includes at least one HVDC transmission or distribution line for carrying direct current, DC, and the arrangement includes an apparatus connectable to the HVDC transmission or distribution line, the apparatus being arranged to control the direct current of the HVDC transmission or distribution line by introducing a DC voltage in series with the HVDC transmission or distribution line. The arrangement includes a protection device for protecting the apparatus against over-current or overvoltage occurrences. The protection device includes a bypass device connectable to the HVDC transmission or distribution line and connected in parallel with the apparatus. The bypass device is arranged to be in a non-conducting mode and arranged to be set to a conducting mode. When being in the conducting mode, the bypass device is arranged to conduct direct current of the HVDC transmission or distribution line to electrically bypass the apparatus. A HVDC power transmission system includes at least one arrangement of the above-mentioned sort. A method for protecting an apparatus against over-current or overvoltage occurrences, the apparatus being included in an arrangement of the above-mentioned sort.

Arrangement for controlling the electric power transmission in a HVDC power transmission system

A converter building including at least one room having a solid room wall enclosing an interior space and an electrical active part contained in the interior space, the room wall having at least one opening, which is designed such that it allows a human to enter the interior space. The opening is sealable, the room wall encloses the interior space in a gas-tight manner when the opening is sealed, and the interior space contains a dielectric insulation medium including a dielectric insulation component other than air.

Converter building

A modular HVDC converter system including a high voltage direct current network, and at least two DC/AC converters being connected in series to the HVDC network. Each of the DC/AC converters is arranged to provide AC to a separate AC load.

Modular HVDC converter

Installation for power transmission by means of high-voltage direct

Control of an installation for transmission of high-voltage direct

Recovery of transmitted power in an installation for transmission of

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Ludvika, Sweden

Mats Hyttinen