Case studies

Gridwise Consulting brings hands-on experience across a wide range of HVDC configurations, from back-to-back interconnections to ultra-long-distance and ultra-high-power transmission schemes. Each project below highlights how Gridwise expertise has been applied across the HVDC lifecycle: system definition, control and protection design, validation, testing, commissioning and training.

Sin título 2

GCCIA Back-to-Back HVDC Scheme

The GCCIA Back-to-Back HVDC scheme enables controlled power exchange between asynchronous AC systems within the GCC interconnection. The converters are co-located at AI-Fadhili, with no DC transmission line, allowing flexible and secure interconnection without synchronous coupling.

Key Parameters

  • Converter Stations: AI-Fadhili (Saudi Arabia)
  • HVDC Configuration: Back-to-Back
  • Rated Power: 1,800MW
  • DC Voltage: 222kV
  • DC Distance: 0km

Role & Responsibilities

  • Control and protection requirements specification.
  • Review of control and protection philosophies.
  • Support to system-level validation activities.

Technical Focus

  • Back-to-back HVDC operation.
  • Interaction between control and protection functions.
  • Validation and commissioning support.

Improved clarity of control and protection behaviour and reduced risk during later project stages.

Sin título sur

South West Link HVDC (Sweden)

South West Link is a VSC-based HVDC transmission system strengthening the Swedish grid and enabling increased system flexibility and hydroelectric renewable integration. The link connects Barkeryd and Hurva through a combination of undergorund and overhead DC transmission.

Key Parameters

  • Converter Stations: Barkeryd ↔ Hurva
  • HVDC Configuration: VSC HVDC
  • Rated Power: 1,400MW
  • DC Voltage: ±300kV
  • DC Distance: 250km

Role & Responsibilities

  • Control system engineering support.
  • Software design and review.
  • Validation and testing activities.

Technical Focus

  • VSC control strategies.
  • Power and current control.
  • Interaction with AC networks.

Support to stable and predictable system behaviour through robust control design and validation.

Sin título 1

Rio Madeira HVDC System

The Rio Madeira HVDC systen is one of the world’s longest HVDC transmission schemes, designed to evacuate large-scale hydroelectric generation from the Amazon region to major load centres in southeastern Brazil.

Key Parameters

  • Converter Stations: Porto Velho ↔ Araraquara
  • HVDC Configuration: Long-distance HVDC
  • Rated Power: 3,150MW
  • DC Voltage: ±600kV
  • DC Distance: 2,416km

Role & Responsibilities

  • Control and protection engineering support.
  • System-level analysis.
  • Validation and commissioning assistance.

Technical Focus

  • Bipolar HVDC operation.
  • Control-protection coordination.
  • Commissioning support.

Contribution to successful commissioning and operation of a complex large-scale HVDC scheme.

Sin título 4

Lower Churchill Project

The Lower Churchill Project enables power export from Labrador to the island of Newfrondland, combining long-distance HVDC transmission with a maritime link. The project supports phased system development and reliable integration into the existing AC network.

Key Parameters

  • Converter Stations: Muskrat Fall ↔ Soldiers Pond
  • HVDC Configuration: HVDC with maritime link
  • Rated Power: 900MW
  • DC Voltage: ±350kV
  • DC Distance: 1,100km

Role & Responsibilities

  • Support to control and protection specification.
  • Review of technical documentation.
  • Validation support and Commissioning and grid integration assistance.

Technical Focus

  • HVDC system integration.
  • Requirement traceability.

Enhanced technical consistency between specifications, design and testing activities.

Sin título KOREA

Buk-Dangjin – Godeok HVDC (South Korea)

This high-power HVDC link reinforces the Korean transmission network, enabling controlled power transfer over a relatively short distance with very high power density. The project places strong emphasis on advanced control performance.

Key Parameters

  • Converter Stations: Dangjin ↔ Godeok
  • HVDC Configuration: High-power HVDC
  • Rated Power: 3,030MW
  • DC Voltage: ±505kV
  • DC Distance: 33km

Role & Responsibilities

  • Delivery of specialised technical training. Advanced control and power regulation training.
  • Support on low-level control software.
  • Knowledge transfer to customer engineering teams.

Technical Focus

  • Low-level control implementation.
  • Dynamic behaviour understanding.
  • Knowledge transfer to client engineering teams.

Improved internal capability of the client team to understand, maintain and evolve HVDC control software.

Sin título last

Champa HVDC Project (India)

The Champa HVDC project is an ultra-high-power transmission scheme designed to move bulk power over long distances from central generations areas to major load centres in India, strengthering regional interconnections and improving overcall grid stability in India.

Key Parameters

  • Converter Stations: Champa ↔ Kurukshetra
  • HVDC Configuration: Point-to-Point HVDC
  • Rated Power: 6,000MW
  • DC Voltage: ±800kV
  • DC Distance: 1,305km

Role & Responsibilities

  • Control and protection engineering support.
  • Review of control and protection requirements.
  • Support to validation and commissioning activities.

Technical Focus

  • High-power HVDC system behaviour.
  • Control-protection interaction.
  • Dynamic performance during commissioning scenarios.

Contribution to improved understanding of system behaviour and smoother commissioning through structured engineering support.