StandardInterconnectionWindType1Aand1B : Documentation diagram
Created: |
05/25/2012 12:37:09 PM |
Modified: |
06/15/2012 04:30:37 PM |
Project: |
|
Author: |
ppbr003 |
Version: |
1.0 |
Advanced: |
|
ID: |
{2D34F9D6-8E35-40dd-A155-BDF25DCED47B} |
A dynamic model representing a type 1 wind generator and its related standard equipment models is associated with an asynchronous machine in the static (power flow) model and has one of the two the standard interconnections shown above.<br /></p><p><br /></p><p>The type 1 wind turbine uses asynchronous (induction) generators directly connected to the grid, i.e. without power converter. Most type 1 wind turbines have a soft-starter, but this is only active during start-up.<br /></p><p><br /></p><p>Type 1 wind turbines may have fixed blade pitch angles or pitch systems allowing the blades to be turned away from stall (positive pitch angle) or into stall (negative pitch angle, also denoted active power control or Combi Stall control). The blade angle control is in some type 1 wind turbines used in active FRT control. From the point of view of power system stability studies, the type 1 wind turbines are therefore divided into two subgroups<br /></p><p>- Type 1A without FRT control<br /></p><p>- Type 1B with blade angle FRT control<br /></p><p><br /></p><p>The upper diagram describes a type 1A wind turbine, which is a type 1 wind turbine without FRT control. For this type, the blades pitch angles are assumed to stay constant during the dynamic stability simulations.<br /></p><p><br /></p><p>The lower diagram describes a type 1B wind turbine, which is a type 1 wind turbine with blade angle FRT control.<br /></p><p><br /></p><p>More information is contained in IEC Standard 61400-27-1 Section 6.4.1.<br /></p>