基于SVM级联决策树的复合电能质量扰动识别
*
陈诺, 吕干云, 叶加星
Recognition of Complex PQ Disturbances Based on SVM Cascaded Decision Tree
CHEN Nuo, LÜ Ganyun, YE Jiaxing
表2
电能质量扰动信号模型
类型号
信号类型
表达式
参数
T1
电压暂降
v
(
t
)
=
1
−
a
u
t
1
−
u
t
2
cos
(
ω
t
)
0.1
≤
a
≤
0.9
,
0.1
≤
a
≤
0.9
T2
电压暂升
v
(
t
)
=
1
+
a
u
t
1
−
u
t
2
cos
(
ω
t
)
0.1
≤
a
≤
0.9
,
0.1
≤
a
≤
0.9
T3
谐波
v
(
t
)
=
cos
(
ω
t
)
+
α
3
cos
(
3
ω
t
)
+
α
5
cos
(
5
ω
t
)
+
α
7
cos
(
7
ω
t
)
f
=
50
Hz
,
f
=
50
Hz
T4
电压中断
v
(
t
)
=
1
−
a
u
t
1
−
u
t
2
cos
(
ω
t
)
0.9
≤
a
≤
1
,
0.9
≤
a
≤
1
T5
闪变
v
(
t
)
=
1
+
α
cos
(
β
ω
t
)
cos
(
ω
t
)
0.1
≤
α
≤
0.2
,
0.1
≤
α
≤
0.2
T6
振荡暂态
v
(
t
)
=
cos
(
ω
t
)
+
a
exp
−
(
t
−
t
1
)
/
τ
⋅
cos
ω
n
(
t
−
t
1
)
⋅
u
(
t
1
)
−
u
(
t
2
)
0.1
≤
a
≤
0.8
,
0.1
≤
a
≤
0.8
,
0.1
≤
a
≤
0.8
,
0.1
≤
a
≤
0.8
T7
脉冲暂态
v
(
t
)
=
cos
(
ω
t
)
+
a
u
(
t
1
)
−
u
(
t
2
)
1
≤
a
≤
10
,
1
≤
a
≤
10