Thiết kế cung cấp điện cho phân xưởng sửa chữa cơ khí (Đồ án tốt nghiệp)
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ISO 9001:2008
- 2016
ISO 9001:2008
Sinh viên:
- 2016
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Sinh viên:
Mã sv: 1513102010
DCL901
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2. Cho
6
..........................................................................................1
CH
:C
nh ph t i tính toán
1.1. Khái quát chung. ..........................................................................................2
i tính toán. ..............................................2
......................................................... 5
:
. .................................................................................................21
n. .............................................21
:
3.1.
. ..................................................................................................34
3.2. Các bi n pháp nâng cao h
t. ...........36
n kháng......40
............................................................................................42
.......................................................................43
các
h
.
do
.
.
.
.
1
CH
1.1. KHÁI QUÁT CHUNG.
nó
.
Ptt = Knc. P
(1 - 1)
Qtt = Ptt.tg
(1 - 2)
Knc cos -
.
Pcs = po. S.
o
(1 - 3)
2
2
S-
).
).
(1 - 4)
2
(1 - 5)
(1 - 6)
(1 - 7)
cos =
(1 - 8)
K K
4.
K
: Ptt = P
(1 - 9)
ksd kmax nhq 3
nh nhq
1
-
1
1
(1 - 10)
nP (1 - 11)
*,
P*
hq* [PL-3]
hq
th
hq =
Kmax
hq
n. nhq*
= 4 [PL-4], khi nhq
(1 - 12)
kti
kt
kt
(1 - 13)
n
Qttpx
k dt
(1-14)
Qtti
1
(1 - 15)
4
Ph
ng pháp n
x
: phân x
công c
(1 - 16)
2
po
2
).
).
hao
Ph
nh
mn
(1 - 17)
Wo
Tmax
u nh
TTT
.
.
phay, máy doa, máy khoan,...
5
.
STT
Tên máy
1
2
10
2
2
28
3
Lò rèn
2
4.5
4
Lò rèn
1
6
5
1
2.6
6
1
2.5
1
10
9
1
15
11
1
4.8
12
1
3.2
13
1
7
17
2
2.2
18
1
30
10
1
90
20
1
30
21
1
30
22
1
36
23
1
20
24
1
4
25
1
18
8
Máy ép ma sát
7
26
1
3
28
1
0.6
30
1
0.25
33
1
1.3
34
1
80
37
1
23
1
45
41
1
7
42
1
3.2
44
1
3.2
46
1
4.5
47
1
7
48
1
9
40
Máy nén khí
49
9
1
12
50
14
1
18
.
*
(
*
,
,
8
*
*
.
1.2.
9
1.2.
STT
SL
KHMB
1
2
1
2*10
2
2
2
2*28
Nhóm 1
3
Lò rèn
2
3
2*4.5
4
Lò rèn
1
4
6
5
1
11
4.8
6
1
13
7
7
1
9
15
8
2
17
2*2.2
12
122.2
Nhóm 2
1
1
10
90
2
1
12
3.2
3
1
5
2.6
4
1
6
2.5
5
1
23
20
1
8
10
6
Máy ép ma sát
6
128.3
Nhóm 3
1
1
34
80
2
1
37
23
3
1
20
30
3
10
133
Nhóm 4
1
1
22
36
2
1
21
30
3
1
18
30
4
1
24
4
5
1
25
18
6
1
28
0.6
7
1
30
0.25
1
33
1.3
1
26
3
8
pal
9
9
123.15
Nhóm 5
1
1
40
45
2
1
41
4.5
3
1
42
4.5
4
1
44
4.5
5
1
46
7
6
1
47
4.5
1
48
12
8
1
49
9
9
1
50
18
7
Máy nén khí
t gió
9
11
109
1.3
Nhóm 1
STT
KHMB
1
2
1
2*10
2
2
2
2*28
3
Lò rèn
2
3
2*4.5
4
Lò rèn
1
4
6
1
11
4.8
6
1
13
7
7
1
9
15
8
2
17
2*2.2
5
pal ng
12
122.2
n= 12; n1= 3; p1= 71(kW); p =122.2 (kW)
; p*=
n*=
=
STK
=0,57
hq=
n
[STK
nhq=7
max
= 12*0.57= 7
sd=0,2
= 2,1
12
=0.6
Ptt= Kmax . Ksd.
= 2.1* 0.2* 122.2= 51.32 (kW)
Qtt= ptt .
(kVAr)
Stt=
Itt=
=
=
= 85.54(kVA)
=129.96(A)
Nhóm 2
STT
1
6
KHMB
kim
1
10
90
2
1
12
3.2
3
1
5
2.6
4
1
6
2.5
5
1
23
20
Máy ép ma sát
1
8
6
128.3
n= 6; n1= 2; p1= 23.2kw; p =128.3 (kW)
; p*=
n*=
=
STK
=0,95
hq=
n
STK
nhq=6
= 6*0.95= 6
sd=0,2
max
10
= 2,24
13
=0.3
2:
Ptt= Kmax . Ksd.
= 2.24* 0,2* 128.3= 57.48 (kW)
Qtt= ptt .
(kVAr)
Stt=
=
Itt=
=
= 95.65(kVA)
=145.32 (A)
Nhóm 3
STT
KHMB
1
1
34
80
2
1
37
23
3
1
20
30
3
133
n= 3; n1= 2; p1= 170(kW); p =193 (kW)
; p*=
n*=
=0,71
hq=
Qtt= ptt .
=0.9
= 3*0.71= 2,13
tt=
hq
Ptt=
n
=
=133(kW)
133*1,33=176.89 (kVAr)
14
Stt=
=
Itt =
=
=221.3 (kVA)
=336.23 (A)
Nhóm 4
STT
SL
KHMB
1
1
22
36
2
1
21
30
3
1
18
30
4
1
24
4
5
1
25
18
6
1
28
0.6
7
1
30
0.25
1
33
1.3
1
26
3
8
pal ng
9
9
123.15
n= 9; n1= 4; p1= 114kW; p =123.15 kW.
; p*=
n*=
=
STK
=0,58
hq=
n
= 9*0,58= 5,22
STK
nhq=5,22
max
sd=0,2
= 2,42
15
=0.9.
4:
Ptt= Kmax . Ksd.
= 2,42* 0,2* 123.15= 59.6 (kW)
Qtt= ptt . tg = 59.6*1,33=79.27 (kVAr).
Stt=
Itt=
=
= 99.2 (kVA).
=150.72(A).
Nhóm 5
STT
1
KHMB
Máy nén khí
1
40
45
2
1
41
4.5
3
1
42
4.5
4
1
44
4.5
5
1
46
7
6
1
47
4.5
7
1
48
12
8
1
49
9
9
1
50
18
9
16
109
n= 9; n1= 3; p1= 39 kW; p =109 kW.
n*=
.
p*=
=
=0,4.
[STK
=0,76
hq=
n
= 9*0,76 =7.
sd=0,2
nhq=7
max
= 2.1
5:
Ptt= Kmax . Ksd.
= 2.1* 0.2* 109= 45.78 (kW)
Qtt= ptt .tg =45,78*1,33=60,89 (kVAr)
Stt=
Itt=
=
=
= 76.18 (kVA)
=115.74 (A)
1.3.4.Tính toán
2
0=12(W/m )
F=1000(m2)
17
