HVDC | Hitachi Energy

HVDC (high-voltage direct current) is a key enabler for a carbon-neutral energy system. It is highly efficient for transmitting large amounts of electricity over long distances, integration of renewables and interconnecting grids, opening up for new sustainable transmission solutions.

Our offering

HVDC Classic (LCC)

HVDC Classic technology is used mainly for transmission of bulk power and AC system interconnections.

HVDC Light® (VSC)

HVDC Light is Hitachi Energy's VSC-HVDC technology which offers many environmental benefits, including compact converter stations and invisible transmission.

HVDC care

Hitachi Energy is the leading supplier of upgrades and refurbishment of HVDC stations. Since 1990, Hitachi Energy has delivered more than 25 upgrade projects to Hitachi Energy installations and HVDC Converters installed by others.

HVDC converter stations

Converter stations för HVDC Classic and HVDC Light

MACH™ control and protection system

MACH, Hitachi Energy's control and protection system for HVDC and FACTS

Applications

Back to back

An HVDC Light® back-to-back station consists of two converters located in the same building.

City center infeed

HVDC applications: City center infeed

Connecting remote generation

HVDC applications: connecting remote generation, such as hydro or solar

Connecting remote loads

HVDC application: Connecting remote loads

DC links in AC grids

HVDC application: DC links in AC grids

Interconnecting grids

HVDC application: Interconnecting grids

Offshore wind connections

HVDC application: Offshore wind connections

Overhead transmission lines for HVDC

HVDC overhead lines clearly have far smaller footprints than AC overhead lines and DC electrical losses are lower.

Power from shore

HVDC application: Power from shore

Extensions Upgrades and Retrofits

HVDC application: Upgrades, extensions and retrofits give new lease on life for an HVDC link

HVDC news

Events & Webinars

HVDC campaigns and webinars

Increasing integration of offshore wind power

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Combined grid solutions

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Network stability campaign

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Multi-terminal HVDC system

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Hitachi Energy Hybrid HVDC breaker – Enabling the DC grid

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HVDC Light® Life cycle assessment

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Links and downloads

HVDC Heritage

HVDC FAQ

HVDC Youtube

ABB Review HVDC Special Report

Brochures

Technical papers

Case Studies

FACTS

FACTS (Flexible Alternating Current Transmission Systems) technologies provide more power and control in existing AC as well as green-field networks and have minimal environmental impact.

Power transformers

Hitachi Energy offers a complete range of power transformers and related components and parts, including over twenty 800 kV UHVDC and over five hundred 735 - 765 kV AC units.

Semiconductors

A wide variety of high power semiconductors using conventional and future oriented technologies with high reliability fulfilling the demand of the traction, industry and energy transmission segments.

Service & Consulting

We offer an array of services for our products and systems that can be ordered a la carte or within a service agreement.