Download D5.1-Part 3_Tool Box for modeling ETN components

Table of content
Deliverable D5.1 ................................................................................................................. 1
Modeling requirements for the ETN .................................................................................... 1
Part 3: Toolbox for modeling ETN components .................................................................. 1
1.
Executive Summary ................................................................................................... 6
2.
Introduction ................................................................................................................ 8
3.
Simplified wind farm / wind turbine model .................................................................. 9
3.1. Introduction ................................................................................................................................... 9
3.2. DFIG based WT system configuration .......................................................................................... 9
3.3. Detailed (full order) model of the DFIG ....................................................................................... 10
3.4. The quasi stationary (QS) model of the DFIG ............................................................................ 11
3.5. Rotor side converter (RSC) model .............................................................................................. 11
3.6. Simplified model of DFIG and its control system- the generic model ......................................... 12
3.7. Model of the full size converter machine and its control system ................................................ 13
3.8. Current limitation equations ........................................................................................................ 14
3.9. Further extensions and the generic model in its final form ......................................................... 15
3.10. Accuracy of the generic model in comparison with the QSS model ........................................... 16
3.11. Sign convention and initialization procedure .............................................................................. 17
4.
3.11.1.
Sign convention ........................................................................................................... 17
3.11.2.
Initialization .................................................................................................................. 17
Implementation of the wind farm model ................................................................... 18
4.1. Modifications made in EUROSTAG model compared to base model description ...................... 18
4.2. Implementation of specific parts of the model ............................................................................ 18
4.2.1.
Simple lag with variable time constant ........................................................................ 18
4.2.2.
Current conversion ...................................................................................................... 18
4.2.3.
PI block with limitation ................................................................................................. 18
4.3. Model parameters description ..................................................................................................... 19
4.4. Model testing ............................................................................................................................... 20
4.4.1.
Sample power grid ...................................................................................................... 20
4.5. Test results.................................................................................................................................. 21
4.5.1.
Direct (metallic) short-circuit ........................................................................................ 22
4.5.2.
Voltage set-point modification ..................................................................................... 24
Date: 19/08/2011
Page: 3
DEL_WP5.1_Part_3_Toolbox_for_model
ing_ETN_components_V3.doc