Offshore Wind Accelerator: HVDC-connected OWFs - controller interaction and grid stability study

Calling for entries from companies and consortia interested to undertake a study to investigate controller interaction and grid stability in HVDC-connected offshore wind farms for the OWA Electrical Systems Technical Working Group (TWG-E).

The OWA TWG E would like to investigate controller interaction, sub synchronous torsional interactions and grid stability of HVDC-connected offshore wind farms.

This project seeks for further understand the key factors that contribute to control interactions and establish study methodology (both screening level and detailed time domain) to identify potential concerns, derive mitigation options and verify safe operation of equipment.

The main objectives of this work are to identify controller interaction issues with converters and other FACTS devices; develop a scope of studies to be executed to perform interaction studies; perform typical interaction studies using multi-vendor HVDC controllers; and understand potential mitigation actions and their cost.

The expected benefits of this work are to understand the potential interaction issues for HVDC connected windfarms, and reduce the risk of non-compliance to allow the increase of HVDC connected offshore wind connected to the grid without stability issues.

The deadline for clarification questions has passed. Responses to the clarification questions received are provided below.

The closing date to receive tender submissions is 28 June 2021, 13:00 BST.

All clarification questions and tender submissions should be sent electronically, by their respective deadlines, to, with in copy.

About the Offshore Wind Accelerator (OWA)