Some of our HVDC projects:

Manitoba, Canada

Bipole III Project HVDC Classic, 230 kV AC / 500 kV DC, 2000 MW

Alberta, Canada

EATL & WATL, 500/240/21 kV 1,000 MW Bipolar HVDC link

France- UK

Eleclink: 1000 MW 320 kV DC, HVDC Plus VSC in a modular multilevel converter arrangement (VSC-MMC)

Offshore, Germany

Dolwin 3: 900 MW, ±320 kV DC, Voltage Sourced Converters (VSC), Offshore Wind


Piedmont-Savoy 2x600 MW, +/- 320 kV DC, Voltage Sourced Converters (VSC)

Labrador, Canada

Nalcor 900 MW, ±350 kV DC, Line Commutated Converter (LCC), Labrador-Newfoundland

Offshore, Germany

Borwin 2:, ±300 kV DC and a transmission capacity of 800 MW Voltage Sourced Converters (VSC) Offshore Wind

Offshore, Germany

Sylwin alpha: ±300 kV DC and a transmission capacity of 860 MW Voltage Sourced Converters (VSC) Offshore Wind

Offshore, Germany

Helwin 1, ±250 kV DC and a transmission capacity of 570 MW Voltage Sourced Converters (VSC) Offshore Wind

See reference projects section for more details about some of the HVDC projects

VSC technology is the base for Flexible AC Transmission Systems (FACTS) and Static Syncronous Compensators (STATCOMs). FACTS and STATCOMs have seen a steady increase of use mostly driven by the higher shares of renewable energy and their impact on AC transmission and distribution networks. FACTS and STATCOM systems are used to address many of these issues. Aspecto can provide a team with experience in HVDC and FACTs technologies covering all project stages from engineering to commissioning. Here are some of our HVDC /FACTS/STATCOM services:

Engineering, FAT



Commissioning of AC protection system: Filter bank and converter transformer protection
AC/DC Filter Banks Interlockings and Commissioning
HVDC Yard Apparatus Commissioning incl. CTs, VTs, MV and HV switchgear
Commissioning of DC measuring system: FO connection testing, Measuring test by secondary and primary injection, Measuring system stability test, switchover between primary and secondary measuring communication systems
Commissioning of DC yard: Primary injections in CTs and Voltages dividers, relay testing in DC pole control, DC group control, transformer control, fiber optics testing
Auxiliary system Commissioning (UPS, Inverters and AC&DC supply)
Testing and commissioning of SCADA/HMI system on site incl. signal testing, network equipment troubleshooting and configuration

Management of Site Activities

Project Management / Site Management / Commissioning Management