Dynamic Equivalent Modeling of Wind Farm Based on Dominant Variable Hierarchical Clustering Algorithm

Table 4

Clustering results of 4-group wind turbines under different indexes.

(a) 13 state variables
Equivalent unit number	Clustering results
1	1, 5, 9, 13, 17, 21
2	2, 3, 6, 7, 10, 14, 15, 18, 22, 23
3	4, 8, 12, 16, 20, 24
4	11, 19
(b) Dominant variables
1	1, 5, 9, 13, 17, 21
2	2, 3, 6, 7, 10, 14, 15, 18, 22, 23
3	4, 8, 12, 16, 20, 24
4	11, 19
(c) Wind speed
1	1, 5, 9, 13, 17, 21
2	2, 6, 10, 14, 18, 22
3	3, 4, 7, 8, 11, 15, 19, 23
4	12, 16, 20, 24