0
5
10
15
20
-100
-50
0
50
100
150
200
t/(s)
d1/(degree)
d1
0
5
10
15
20
-150
-100
-50
0
50
100
150
t/(s)
d2/(degree)
d2
Fig. 2. The response curve of generator power angle
0
5
10
15
20
-1.8
-1.6
-1.4
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
t/(s)
w1/(rad/s)
w1
0
5
10
15
20
-5
-4
-3
-2
-1
0
1
t/(s)
w2/(rad/s)
w2
Fig. 3. The response curve of generator angular velocity
0
5
10
15
20
-5
-4
-3
-2
-1
0
1
2
t/(s)
Eq1'/(p.u)
Eq1
0
5
10
15
20
-12
-10
-8
-6
-4
-2
0
2
t/(s)
Eq1'/(p.u)
Eq2
Fig. 4. The response curve of transient electromotive force
512
L. Chang et al.