Deliverable 3.6: Report with the compliance test procedures for DR and VSC connected WPPs

The PROMOTioN Work Package 3 (WP3) “Wind Turbine – Converter Interaction” has three main objectives; 1. to specify functional requirements to OWFs, focusing on DRU-HVDC connection 2. to identify and specify general control algorithms for WTs and OWFs, focusing on DRU-HVDC connection 3. to define and demonstrate compliance evaluation procedures by simulations and tests This report summarises the results of Task 3.3 “Compliance evaluation procedure”.

In Task 3.1 operational and system stability related requirements for DRU connected OWFs have been specified, mainly in Deliverable 3.1. In Task 3.2 control algorithms and simulation test cases for DRU connected OWFs have been specified, mainly in Deliverable 3.2. Based on these simulation test cases simulation results for DRU connected OWFs have been given in Deliverable 3.4 and 3.5.

Hereby, in this Deliverable 3.6, evaluation procedures for compliance of the DRU connected OWFs to the requirements specified in Deliverable 3.1 are the main focus. The following step is application of the specified compliance test procedures in the succeeding Task 3.4, mainly in Deliverable 3.7. In WP3 and also in this report, the main focus has been set on DRU-HVDC connection, since the VSC-HVDC connection is seen as a proven technology of today.

Nevertheless, VSC-HVDC is still being investigated throughout the work package when there is room for further developments. In Task 3.2 of WP3, VSC-HVDC control strategies are being studied as state of the art and detailed requirement analysis for VSC-HVDC is being performed in WP1, which encompasses requirements for all components in the PROMOTioN project.

Section 2 of this report contains a description of requirements on wind turbines (WT) and wind power plants (WPP) that are in focus of compliance evaluation procedures. In section 3 validation procedures for open models and manufacturer black-box simulation models are described. Procedures for simulation-based compliance evaluations are described in section 4.

It should be noted that the simulation model validation procedures and compliance test procedures for certain functions (that are listed below) apply for VSC-connected OWPP as well. The functions for which the specified compliance test procedures apply for both DRU and VSC connected OWPPs are: - Active Power Production (section 4.1.1) - Dynamic Active Power Control (section 4.1.3) - Harmonics (section 4.2) - Offshore Voltage-/Reactive Power Behaviour (section 4.3.4) - Offshore AC Symmetrical / Asymmetrical Faults (section 4.4) - Frequency Support (section 4.5.1) - Onshore Power Oscillation Damping (section 4.5.2) Compliance evaluation procedures are also being handled in WP11 in D11.4 “Report with recommendations to best practice for compliance evaluation”.