N TT NGHIP Sinh vin: Trn th ipSHSV: 0500111 1 MC LC PHN I - GII
THIU CHUNG V NH MY
....................................................... 2 PHN II -
THIT K H THNG CUNG CP IN
............................................. 4 CHNG I: XC NH PH TI
TNH TON .................................................. 4 I.1-
XC NH PTTT CA PHN XNG SA CHA C KH ................ 4 I.2- XC NH PH
TI TNH TON CHO CC PHN XNG CN LI
....................................................................................................................................
16 I.3- XC NH PH TI TNH TON CA TON NH MY ................. 22 I.4-
XC NH BIU PH TI IN
...................................................... 22 CHNG II:
THIT K MNG IN CAO P CHO NH MY .................. 26 II.1- XC NH CP
IN P TI V NH MY ..................................... 26
II.2-VCHPHNGNTTRMBINPPHNXNG,XC NH V TR, S LNG, DUNG LNG CA CC TRM
BIN P PHN XNG
.....................................................................................................................
26 II.3- VCH CC PHNG N CUNG CP IN
....................................... 31
II.4-TNHTONKINHT-KTHUTLACHNPHNGNTI U
..............................................................................................................................
33 II.5- THIT K CHI TIT CHO PHNG N C CHN ...................... 57
CHNG III: THIT K MNG IN H P CHO PXSC C KH .............. 71 III.1-
Chn cp t TBA B3 v t phn phi ca phn xng ............................
71 III.2- La chn cc thit b cho t phn phi
..................................................... 72 III.3-Tnh
ngn mch pha h p ca PXSCCK kim tra cp v ptmt ..... 73 III.4- La chn
thit b trong cc t ng lc v dy dn n cc thit b ca PX
....................................................................................................................................
76 CHNG IV: THIT K CHIU SNG CHO PHN XNG SA CHA C KH
.................................................................................................................................
85 IV.1- Tnh ton nhu cu chiu sng
....................................................................
85 IV.2- Thit k mng in chiu sng
..................................................................
87 CHNG V: TNH TON B CNG SUT PHN KHNG NNG CAO H S CNG SUT CA NH MY
.......................................................................
90 V.1- Cc thit b b trong h thng cung cp in
............................................. 90 V.2- Xc nh v phn b
dung lng
b........................................................... 91 N
TT NGHIP Sinh vin: Trn th ipSHSV: 0500111 2 PHN I - GII THIU CHUNG
V NH MY Nh my sn xut my ko c quy m kh ln gm 10 phn xng vi cng sut t
ln ti 12090kW (cha k phn xng sa cha c kh v h thng chiu sng). Nh my
c tng din tch 40387m2, mt bng c trnh by trn hnh I.1. Bng I.1- Ph ti
ca nh my sn xut my ko TTTn phn xngCng sut t, kWDin tch, m2 1Ban qun
l v phng thit k80 (cha k chiu sng)2275 2PX c kh s 115003500 3PX c
kh s 218003837 4PX luyn kim mu21006250 5PX luyn kim en23007275 6PX
sa cha c khTheo tnh ton1168 7PX rn13503825 8PX nhit luyn12004950 9B
phn kh nn17002700 10Kho vt liu603900
Nhmyctmquantrngrtlnivinnkinhtcngnghipcatnc. Nn vic thit k cp in cho
nh my c xp vo h tiu th loi I v lun i hi tin cy cao, an ton, kinh t.
Trong phm vi nh my cc phn xngtu theo vai tr v quy trnh cng ngh c xp
vo h tiu th: Loi I: gm cc phn xng quan trng nm trong dy truyn sn
xut khp kn. Loi III: gm phn xng sa cha c kh, kho vt liu, ban qun l
v phng thit k. Nnglngincungcpchonhmyclyththngliinqucgia thng qua
trm bin p trung gian (TBATG) cch nh my 6km. V ph ti in do sn xut
theo dy truyn nn h thng ph ti ca nh my phn b tng i tp trung, a s N
TT NGHIP Sinh vin: Trn th ipSHSV: 0500111 3 ph ti l cc ng c in c cp
in p ch yu l 0,4kV. Tng ng vi quy trnh v t chc sn xut, thi gian s
dng cng sut cc i ca nh my l T = 5000gi. Trong chin lc sn xut v pht
trin nh my s thng xuyn nng cp, ci tin
quytrnhkthut,dovyqutrnhthitkcungcpincschnyutpht trin, m rng trong
tng lai gn 2-3 nm cng nh 5-10 nm ca nh my. CC NI DUNG TNH TON THIT
K BAO GM: 1.Xc nh ph ti tnh ton (PTTT) 2.Thit k mng cao p nh my
3.Thit k mng h p phn xng sa cha c kh 4.Thit k chiu sng phn xng sa
cha c kh cho nh my 5.Tnh ton b cos cho nh my N TT NGHIP Sinh vin:
Trn th ipSHSV: 0500111 4 PHN II - THIT K H THNG CUNG CP IN CHNG I:
XC NH PH TI TNH TON Ph ti dng trong thit k tnh ton h thng cung cp
in gi lph ti tnh ton
(PTTT)lphtigitng,ccidihn,khngthayitheothigianvtng ng vi ph ti thc t
v hiu qu pht nhit. V vy chn cc thit b theoPTTT s m bo an ton cho
thit b v mt pht nng. PTTT c s dng la chn v kim tra cc thit b trong
h thng cung cp in nh: MBA, dy dn, cc thit b ng ct, bo v; tnh ton tn
tht cng sut, tn tht in nng, tn tht in p; la chn dung lng b cng sut
phn khng PTTT ph thucvonhiuyutnh:cngsut,slng,chlmviccaccthitbin,
trnhvphngthcvnhnhhthngVicxcnhPTTTrtquantrng.Nu PTTTTxcnhb s dn
nccthit b in chnb,gyquti lmmtin,gy chy n ph hoi cng trnh in. Ngc li
nu PTTT chn qu ln s dn n tng vn
utlmxuctnhkthut.Vvycnhiucngtrnhnghincuvphng
phpxcnhPTTT,songchonnayvnchacphngphpnoththonthin. Nhng phng php cho
kt qu tin cy th li qu phc tp, khi lng tnh ton v nhng thng tin ban u
i hi qu ln v ngc li. Vvytutheoyucu tnhtonvnhng thngtin c cvphtimngi
thit k c th la chn c phng php thch hp xc nh c PTTT. Trong n ny vi
phn xng sa cha c kh ta bit v tr, cng sut t, ch lm vic ca tng thit b
trong phn xngnn PTTT c xc nh theo cng sut trung bnh v h s cc i. Cc
phn xng cn li do ch bit din tch v cng sut t ca n nn PTTT c xc nh
theo cng sut t v h s nhu cu. I.1- XC NH PTTT CA PHN XNG SA CHA C KH
Phn xng sa cha c kh l phn xng s 6 trong s mt bng nh my, vi din tch
l 1168m2 phn xng gm 34 thit b, cng sut ca cc thit b rt khc nhau,
thit b c cng sut ln nht l 30kW (my nn kh), song cng c nhng thit b c
cng sutrtnh(
