he thong cung cap dien - slide tc
TRANSCRIPT
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LL VitVit TinTinEPSDEPSD, SEE,, SEE, HUSTHUST
1.1. GiiGii thiuthiu chungchung vv hh thngthng inin
2.2. TngTng quanquan cngcng nghngh snsn xutxut inin nngnng
3.3. KhiKhi nimnim vv lili inin
4.4. KhiKhi nimnim vv hh thngthng cungcung cpcp inin
5.5. CcCc kk hiuhiu thngthng dngdng trongtrong thitthit kk hh
thngthng inin
NiNi dungdung
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HHthngthng cungcung cpcpinin
TngTng quanquan chungchung
MchMch inin xoayxoay chiuchiu nn gingin NgunNgun ((mymy phtpht ngng bb nn))
ngng dydy ((dydy dndn),), PhPh titi ((bngbng nn))
iuiu khinkhin ((cngcng tctc,, ngng hh oo))
TTTTiiii
Nh my in
Cc nh my sn xut in nng t cc ngunnng lng khc (Du, ht nhn, hoc nhitnng)
Trm bin p my pht (s/s) ni nh my invi h thng truyn ti qua cc my bin ptng p.
Li truyn ti
Li truyn ti chuyn in nng i xa t nhmy in ti li phn phi. in p khong230 1100 kV.
H thng truyn ti gim in p xung khong36-230 kV.
Cc h thng truyn ti chuyn in nng tli truyn ti n li phn phi.
Li phn phi
Gim in p xung in p c bn ca li phn phi.
H thng phn phi nhn in nng t li phn phi qua cc my bin p phn phi.in p khong t 4.16-34.5 kV
My bin p phn phi chuyn i xung in p s dng v chuyn ti khch hng sdng in.
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HHthngthng cungcung cpcpinin
TngTng quanquan chungchung
CcCc cc imim cngcng nghngh caca hh thngthng inin inin nngnng nhnnhn chungchung khngkhng tchtch trtr cc inin nngnng cc toto rara tt cccc ngunngun nngnng lnglng khckhc
CcCc ququ trnhtrnh inin xyxy rara rtrt nhanhnhanh
CcCc chch caca hh thngthng inin ll cccc ququ trnhtrnh ngng,,lienlien tctc thaythay ii theotheo thithi giangian nhnh cccc thngthng ss vnvnhnhhnh,, nhunhu cucu phph titi
QuanQuan hh chtcht chch vivi tttt cc cccc ngnhngnh caca nnnn kinhkinhtt..
HHthngthng cungcung cpcpininTngTng quanquan chungchung
CcCc yuyu cucu cc bnbn ii vivi hh thngthng inin pp ngng cc titi aa nhunhu cucu phph titi cccc ii btbt cc
thithi imim nono..
m bo cung cp in tin cy v an ton..m bo cung cp in tin cy v an ton..
mm bobo chtcht lnglng inin nngnng theotheo yuyu cucu..
CC tnhtnh kinhkinh tt caocao..
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HHthngthng cungcung cpcpinin
TngTng quanquan chungchung
HH thngthng inin tngtng lailai SS dngdng cccc nhnh mymy vava vv
nhnh
SS dngdng nngnng lnglng titi toto
HH thngthng inin thngthng minhminh
NhNh mymyininNguynNguyn ll chungchung
PhngPhng phpphp truyntruyn thngthng
NhNh mymy thythy inin,, ll cccc nhnh mymy binbin iinngnng lnglng caca dngdng ncnc thnhthnh inin nngnng....
NhNh mymy nhitnhit inin,, nhitnhit nngnng thuthu cc khikhi ttcccc nhinnhin liuliu (than,(than, dudu,, khkh tt )) cc chuynchuynhaha thnhthnh inin nngnng..
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PhngPhng phpphp khckhc NngNng lnglng titi toto
NngNng lnglng gigi PinPin mtmt tritri
NhNh mymyinin
NguynNguyn ll chungchung
NguynNguyn ll hothot ngng
NhNh mymyininNhNh mymy nhitnhitinin
NhitNhit dodo tt nhinnhinliuliu binbin ncncthnhthnh hihi (2)(2) trongtrong
bungbung tt thnhthnhhihi pp sutsut caocao (3)(3)lmlm quay turbinequay turbine(4)(4) cc nini vivitrctrc (5)(5) nn mymyphtpht (6)(6) snsn xutxutinin nngnng..
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CcCc dngdng nhnh mymy nhitnhit inin sausau DngDng nhinnhin liuliu: Than: Than hochoc dudu TuaTua binbin khkh.. TuaTua
binbin khkh gas,gas, nngnng lnglng mtmt tritri hochoc nngnng lnglngsinhsinh khikhi..
NhNh mymyinin
NhNh mymy nhitnhitinin
TheoTheo phph titi nhitnhit:: NhitNhit inin ngngngng hihi,, nhitnhitinin trchtrch hihi..
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NhNh mymyinin
NhNh mymy thythyinin
NguynNguyn ll hothot ngng
ThTh nngnng ncnc QuayQuay tuatua binbin MyMy phtpht inin
NhNh mymyininNhNh mymy thythyinin
CngCng sutsut caca nhnh mymy thythy inin
PhnPhn loiloi NhNh mymy thythy inin kiukiu pp..
NhNh mymy thythy inin tchtch nngnng..
NhNh mymy thuthu inin kiukiu ngng dndn..
P = 9.81 Q H
P: Cng sut (kW): hiu sut ca nh myQ: Lu lng nc chy (m3/s)
H: Chiu cao ct nc (m)
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NhNh mymy thythy inin kiukiu pp:: to ract nc H bng cch xyp ngndng nc. Ncc dn qxua tuabin bngng dn.
NhNh mymy thythy inin kiukiu knhknh dndn::dng knh dn to r a ct nc. Knhdn gm hai phn: phnu l knhdn h ( hoc hm dn nc) dnga nc t ni c mc nc caonni c mc nc thp; phn cui lngdn kna nc t trn cao xungthp chy tua bin.
NhNh mymyininNhNh mymy thythyinin
uu nhcnhc imim++ ChiChi phph vnvn hnhhnh thpthp,, vnvn hnhhnh nn gingin,, khkh nngnng tt ngng
haha caocao,, khngkhng cncn nhiunhiu nhnnhn cngcng nnnn gigi thnhthnh inin nngnngthpthp..
++ KhKh nngnng huyhuy ngng cngcng sutsut nhanhnhanh (1(1 2ph) =>2ph) => cc ththphnphn chocho vivi nhnh mymy thythy inin hochoc vivi tt mymy caca chngchnglmlm nhimnhim vv iuiu tntn ((gnhgnh phph titi nhnh).). HiuHiu sutsut caocao858590%90%
++ LngLng inin tt dngdng thpthp dodo khngkhng cc ll hihi vv khukhu xx llnhinnhin liuliu..
++ KhngKhng gygy nhimnhim..
++ NhNh mymy thythy inin kiukiu pp cncn mangmang nn nhiunhiu ngunngun lilikhckhc nhnh iuiu tittit ncnc phcphc vv thythy lili,, nuinui btbt thythy snsn,, cicitoto cnhcnh quanquan mimi trngtrng, du, du lchlch..
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NhNh mymyinin
NhNh mymy thythyinin
uu nhcnhc imim-- GiGi thnhthnh xyxy dngdng tt dodo ngoingoi chichi phph xyxy dngdngnhnh mymy cncn cc chichi phph xyxy dngdng cccc ngng dydy caocaopp aa inin tt nhnh mymy vovo lili, chi, chi phph didi dndn ..-- ThiThi giangian xyxy dngdng lulu (10(10--2020 nmnm))-- ThngThng phiphi xyxy dngdng xaxa vngvng phph titi nnnn tntnthttht trntrn hh thngthng truyntruyn titi lnln-- NgunNgun ncnc cungcung cpcp chocho cccc nhnh mymy thythy inin((tt cccc dngdng chychy tt nhinnhin)) thaythay ii theotheo thithi giangian((phph thucthuc khkh huhu,, thithi tittit) =>) => gpgp khkh khnkhntrongtrong vicvic xyxy dngdng phngphng nn iuiu tittit titi uu..-- GyGy nhnh hnghng btbt lili nn mimi trngtrng sinhsinh thithi..
KtKt lunlun XyXy dngdng trntrn cccc dngdng sngsng cc lnln caocao vv chychy
xuytxuyt..
thth phph titi tt do,do, phnphn nhnh vv yy thth ((tntn ssvv thythy lili).).
iuiu tittit thythy lili,, ll ltlt khikhi thitthit kk nhnh mymy..
NhNh mymyininNhNh mymy thythyinin
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NhNh mymy inin dngdng scsc gigi
NngNng lnglng titi toto,, khngkhng nhimnhim
VnVn uu tt lnln (~2USD/W)(~2USD/W)
KtKt nini vivi lili khkh..
NhNh mymyinin
CcCc nhnh mymy dngdng khckhc
PinPin mtmt tritri NngNng lnglng titi taotao
CuCu trctrc cc nhnh vv tt sasa chacha..
ngng sutsut phtpht phph thucthuc vv
thithi tittit.. uu tt caocao chocho dd nn nhnh(2(2--
3USD/W),3USD/W), nhngnhng ss tittit kimkimchocho hh thngthng lnln//
NhNh mymyininCcCc nhnh mymy dngdng khckhc
Photons of light excites electronsPhotons of light excites electronsin the junction into a higher statein the junction into a higher stateof energy, allowing them to act asof energy, allowing them to act ascharge carriers for a currentcharge carriers for a current
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inin pp caca lili inin TiuTiu chunchun::ANSI 84.1ANSI 84.1--1995, IEC1995, IEC--3838--19831983
inin pp nhnh mcmc ((danhdanh nhnh))LL inin pp chunchun mcmc thitthit kk
CcCc cpcp inin pp nhnh mcmc (ANSI C84.1):(ANSI C84.1): HH pp:: Less than 1kVLess than 1kV
TrungTrung pp:: 11--100kV100kV
CaoCao pp:: 100100--230kV230kV
NhNh mymyinin
LiLiinin
inin pp caca lili inin ChnChn inin pp titi inin titi uu thngthng gpgp khikhi thitthit
kk cungcung cpcp inin chocho mtmt phph titi..
CngCng thcthc kinhkinh nghimnghim CngCng sutsut truyntruyn titi (P, MW)(P, MW) ChiuChiu didi (L, km)(L, km)
NhNh mymyininLiLiinin
PL
U
2500500
1000
+
=
PLU .16.34,4 +=
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PhnPhn loiloi lili inin LiLi inin xoayxoay chiuchiu vv LiLi inin mtmt chiuchiu 11 phapha vv 33 phapha TheoTheo inin pp:: hh,, trungtrung,, caocao.. TheoTheo lnhlnh thth TheoTheo tnhtnh chtcht hh tiutiu thth
NhNh mymyinin
LiLiinin
HH thngthng phnphn phiphi mtmtphapha vv 33 phapha MtMt phapha 22 dydy MtMt phapha 33 dydy
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NhNh mymyinin
LiLiinin
CcCc chcchc nngnng caca hh thngthng inin
HHthngthng cungcung cpcpininHHthngthng phnphn phiphiinin
LiLi phnphn phiphi vv hh thngthng phnphn phiphi
1. ng dy truyn ti, 2. Trm phn phi, 3.ngdy phn phi chnh, 4.ng dy
phn phi nhnh, 5. i dy phn phi cp 2
LiLi phnphn phiphi lllili nhnnhn ininnngnng vv aa nn
cccc khchkhch hnghngdngdng inin..
HH thngthng phnphnphiphi inin nini trctrctiptip nn tngtngkhchkhch hnghng ssdngdng inin..
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HHthngthng cungcung cpcpinin
LiLi phnphn phiphi ccbnbn
HH thngthng phnphn phiphi inin cngcngnghipnghip
PhPh titi lnln tptp trungtrung
YuYu cucu nn nhnh caocao
thth bngbng phngphng
DngDng hnhhnh tiatia hochoc nini vngvng
ngng dydy ngnngn
MchMch nini songsong songsong
HHthngthng cungcung cpcpininLiLi phnphn phiphi ccbnbn
Li cao p
Trm inphn phi
Li phnphi chnh
Li phn phi thcp
My bin pphn phi
H thng n H thng n
HH thngthng phnphn phiphi thth PhPh titi uu ((mtmt phph titi caocao 55--50VA/m50VA/m22))
YuYu cucu nn nhnhcaocao
thth phph titithaythay ii lnln
DngDng ngng dydycpcp hochoc dydy trntrnkhngkhng
MchMch vngvng vv ninisongsong songsong
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HHthngthng cungcung cpcpinin
LiLi phnphn phiphi ccbnbn
HH thngthng phnphn phiphinngnng nghipnghip
PhPh toto phnphn tntn(< 1VA/m(< 1VA/m22))
YuYu cucu nn nhnh thpthp
thth phph titi thaythay iilnln ((phph titi mymy bmbm))
LiLi hnhhnh tiatia
ngng dydy trntrn khngkhng ngng dydy didi,, mtmt
mchmch..
Trm inphn phi
H thngn
Li phnphi chnh
My bin pphn phi
KK hiuhiu thngthng dngdng trongtrong thitthit kk
LiLi inin NgunNgun (DC, AC)(DC, AC)
ngng dydy ((trntrn khngkhng,, cpcp,, thanhthanh cici))
MyMy binbin pp
MyMy ctct CuCu giaogiao
CuCu chch
ThitThit bb oo lnglng ((inin pp,, dngdng inin,, cngcng sutsut,, hh sscngcng sutsut))
PhPh titi ((bngbng nn,, ngng cc))
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KK hiuhiuinin
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LL VitVit TinTinEPSDEPSD, SEE,, SEE, HUSTHUST
1.1. KhiKhi nimnim chungchung
2.2. CcCc cc trngtrng caca phph titi inin3.3. CcCc phngphng phpphp xcxc nhnh phph titi tnhtnh tonton
4.4. BiuBiu phph titi vv dd bobo phph titi
NiNi dungdung
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1.1. KhiKhi nimnim chungchung1.1.1.1.nhnh nghangha ccbnbn
ThitThit bb tiutiu thth inin:: tiutiu thth inin nngnng chuynchuynthnhthnh cccc dngdng nngnng lnglng khckhc ((quangquang nngnng,, nhitnhitnngnng,, cc nngnng))
HH dngdng ((tiutiu thth)) inin:: LL mtmt hochoc mtmt tptp hphp ccccthitthit bb tiutiu thth inin dngdng chocho nhngnhng mcmc chch nhtnhtnhnh.. ThngThng ss phph titi W,W, VArVAr, VA or A., VA or A.
PhPh titi inin:: ll ii lnglng cc trngtrng chocho cngcng sutsut tiutiuthth,, vv cc thth biubiu dindin thngthng quaqua cccc ii lnglng nhnhdngdng inin,, cngcng sutsut tctc dngdng hochoc cngcng sutsut phnphnkhngkhng..
PhPh titi tnhtnh tonton:: PhPh titi dd bobo dngdng chocho thitthit kk..
1.1. KhiKhi nimnim chungchung1.2.1.2. TcTc dngdng nhitnhit caca dngdng inin lnln dydy dndn
PhngPhng trnhtrnh cncn bngbng nhitnhit chch lmlm vicvic bnhbnh thngthng
chI QQQ +=
tRIQI = ..2
= ..GcQh
t).(S.qQ cc = 1
NhitNhit lnglng dodo dngdng inin ::
NhitNhit lnglng tt nngnng
NhitNhit lnglng tata rara xungxung quanhquanh ::
Trong R: in tr ()I: dng in (A), t: thi gian (s)
c : Specific heat capacity (J/kg.Co)G: khi lng (kg) : nhit thay i (Co)q: nng sut ta nhit (W/m2.Co)Sc : din tch b mt (m2)1, : nhit trc v sau trong mi
trng (Co)
(1)(1)
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00 .)1( 1TtTt
ee
+=
cS.q
G.cT =0
cS.q
I.R 2=
0 =
011 =
TT00 :: hnghng ss thithi giangian phtpht nngnng caca vtvt liuliulmlm dydy dndn (10(10 phtpht chocho Cu, Al)Cu, Al)
:: nhitnhit nn nhnh :: nhitnhit vtvt liuliu11 :: nhitnhit banban uu caca vtvt liuliu00 :: nhitnhit mimi trngtrng
1 t
1.1. KhiKhi nimnim chungchung1.2.1.2. TcTc dngdng nhitnhit caca dngdng inin lnln dydy
VitVit lili (1),(1), chngchng tata cc
(2)(2)
11.. KhKhii ninimm chungchung11..33.. PhnPhn loloii phuphuttii
Phn loi theo in pPhn loi theo in p SiuSiu caocao pp (U>(U>330330kV)kV) CaoCao pp ((TrTrmm bibinn pp phnphn phphii 3535kV
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Phn loi theo tn sPhn loi theo tn s
Ph ti tn s cng nghipPh ti tn s cng nghip ((fCN = 50fCN = 5060Hz)60Hz)
Ph ti tn s thpPh ti tn s thp (f < fCN): bao gm cc ngf < fCN): bao gm cc ngc c vnh gp dng cho mc ch vn chuync c vnh gp dng cho mc ch vn chuyn.
Ph ti tn s caoPh ti tn s cao (f > fCN ): bao gm cc l(f > fCN ): bao gm cc lcao tn (f > 10000Hz) dng nu, luyn kimcao tn (f > 10000Hz) dng nu, luyn kim
loi; cc l ti, l trung tn (f < 10000Hz)loi; cc l ti, l trung tn (f < 10000Hz)
11.. KhKhii ninimm chungchung11..33.. PhnPhn loloii phuphuttii
Phn loi theo yu cu cung cp inPhn loi theo yu cu cung cp in ll H tiu th loi 1:H tiu th loi 1: l h tiu th m khi b ngngl h tiu th m khi b ngng
cung cp in s gy thit hi ln cho nn kinh tcung cp in s gy thit hi ln cho nn kinh tquc dn, e da n tnh mng con ngi, nhquc dn, e da n tnh mng con ngi, nhhng n an ninh chnh tr quc gia nn khnghng n an ninh chnh tr quc gia nn khngcho php mt in. H tiu th loi 1 phi ccho php mt in. H tiu th loi 1 phi ccp in t hai ngun khc nhau.cp in t hai ngun khc nhau. Cc c quan chnh ph, bnh vin (phng m), x nghipCc c quan chnh ph, bnh vin (phng m), x nghip
ha cht (qu trnh thc hin phn ng, h thng thngha cht (qu trnh thc hin phn ng, h thng thnggi, khi thi c hi), x nghip luyn kim (l in).gi, khi thi c hi), x nghip luyn kim (l in).
11.. KhKhii ninimm chungchung11..33.. PhnPhn loloii phuphuttii
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My bin pphn phi
PCDPhu tiloi 3
Phuti loi2
G
MCCB
Phu tiloi 1
My binp dphng
ATS
11.. KhKhii ninimm chungchung11..33.. PhnPhn loloii phuphuttii
11.. KhKhii ninimm chungchung11..33.. PhnPhn loloii phuphuttii Phn loi theo ch lm vic:Phn loi theo ch lm vic:
Ph ti lm vic theo ch di hn :Ph ti lm vic theo ch di hn : nhit ca thitnhit ca thitb tng ln t nhit mi trng, t n ch xc lp vb tng ln t nhit mi trng, t n ch xc lp vduy tr trong mt thi gian diduy tr trong mt thi gian di ((cc my bm, my nn kh,cc my bm, my nn kh,qut gi)qut gi)
Ph ti lm vic theo ch ngn hn :Ph ti lm vic theo ch ngn hn : nhit canhit cathit b cha t n nhit xc lp th b ct khi li,thit b cha t n nhit xc lp th b ct khi li,nhit thit b tr v nhit mi trng v duy tr trongnhit thit b tr v nhit mi trng v duy tr trongmt thi gian di (mt thi gian di (mt vi gi trc khi c ng li vomt vi gi trc khi c ng li voli)li)
Ch ngn hn lp liCh ngn hn lp li periodic dutyperiodic duty :: nhit ca thitnhit ca thitb cha t n nhit xc lp th b ct ra khi li,b cha t n nhit xc lp th b ct ra khi li,nhit thit b cha tr v nhit mi trng th li cnhit thit b cha tr v nhit mi trng th li cng vo li. C nh vy lp i lp li nhiu ln.ng vo li. C nh vy lp i lp li nhiu ln.
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ChChddii hhnn
C
(oC)
t(s)1
C
(oC)
O t(s)1
tc
(oC)
O t(s)
T
C OC1
ChChngngnn hhnn
ChChngngnn hhnn llpp llii
TCDF
=
ChuChu kyky
:: ththii giangian ngng iinn
T :T : chuchu kykycngcng ttcc
11.. KhKhii ninimm chungchung11..33.. PhnPhn loloii phuphuttii
22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11..thithiphuphuttii
nhnh nghnghaa:: TPTTPT biubiu dindin ss thaythay ii cccc thngthng ss cctrngtrng caca phph titi inin theotheo thithi giangian.. CcCc thngthng ss nynygmgm cc cngcng sutsut tctc dngdng P(t),P(t), cngcng sutsut phnphn khngkhngQ(t),Q(t), dngdng inin I(t).I(t).
SaiSai s sththii giangian(()):: ttyy theotheo ccpp chchnhnh xxcc ccaa thithitt bb oo
mm,, thngthng ththngng 1515 phphtt ,, 3030 phphtt,, 11 gigihohocc ththmm chchnhinhiuu hnhn..
ThThii giangian khkhoo sstt(T):(T): cc thth ll 11 ngyngy,, nmnm,, tyty thucthuc vovokhongkhong thithi giangian ((nhunhu cucu)) khokho stst..
iinn nngnng(A):(A): xxcc nhnh bbii didinn ttchch phphaa ddii ngng congcongphuphuttii
=
==
T T
i
ii tPdttPA0
/
1
.).(
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8
DDngng ngng congcong thithiphuphuttii::
TPTTPT ddngng thngthng ththngng (CLC):(CLC):
bibiuu didinn giagitrtr phjphj ttii theotheo ththiigiangian
TPTTPT ddngng kkoo ddii (LDC):(LDC): ssppxxpp llii TPT LCLTPT LCL ththnhnh ddngng thithibibiuu didinn llnn theotheo ththiigiangian..
24 gi(ngy)15 pht kWng congphuti
22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11..thithiphuphuttii iinn
CcCc phngphng phpphp xyxy dngdng thth phph titi
PhngPhng phpphp dngdng ngng hh tt ghighi:: ChoCho ssliliuu chchnhnh xxcc ((ngng hhttghighi,, cngcng tt iinn tt
)).. GhiGhi ngayngay rara gigiyy hohocc cc lulu trongtrong bbnhnh.. DDliliuu cc ththcc ssddngng trongtrong tngtng lailai..
PhngPhng phphpp oo vavghighi:: GiaGitrtr cc oo vavghighi mmtt ccchch thuthucngcng sausau nhnhngng
khokhongng ththii giangian nhnhtt nhnh.. PhngPhng phphpp nnyy ddngng trongtrong vvnn hhnhnh
PhngPhng phphpp ttngng hhpp:: PhngPhng phphpp ccngng thithicc xxtt nn trtrngng ss.. CC kktt ququ kkmm chchnhnh xxcc,, ddngng trongtrong ttnhnh totonn ss bb..
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22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11.. CCcc cc trngtrng cngcng susutt
CngCng susutt danhdanh nhnh ((nhnh mmcc)) PPmm,, QQmm,, SSmm,, IImm:: llcngcng susutt ghighi trntrn nhnhnn thithitt bb. y l cng sut cc i cho php . y l cng sut cc i cho php thit b c th lm vic lu di m vn m bo ch tiu kinh t k thutthit b c th lm vic lu di m vn m bo ch tiu kinh t k thut
ii vvii mmtt thi thitt bb::Pm= Sm . cosmQm= Sm . sinm
ii vvii mmtt nhnhmm thithitt bb::
mm
m
SI =
3.U
m
m mi
i=1
P = P m
m mi
i=1
Q = Q 2 2m m mS = P +Q mmm
SI =
3.U
22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11.. CCcc cc trngtrng cngcng susutt
CngCng susutt danhdanh nhnh ((nhnh mmcc))
ngng cc llmm vivicc chchngngnn hhnn llpp llii::
TrongTrong o:: T% :T% : HH ss ngng inin tngtng icic tratra theotheo ss taytay..BnhBnh thngthng cc thth lyly T% =T% = 2525%.%.
ii vvii phu phuttii 11 phapha ddngng iinn pp phapha::
TrongTrong : P: P11pp--maxmax ll phph titi caca phapha cc phph titi lnln nhtnht trongtrong 33 phapha..
ii vvii phu phuttii 11 phapha ddngng iinn pp dydy::
TrongTrong : P: P11FF--maxmax ll phph titi dnginpdnginp dydy lnln nhtnht trongtrong 33 phapha..
'
dm dmP =P . T%
3p-td 1p-maxP =3.P
3p-td 1F-maxP = 3.P
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22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11.. CCcc cc trngtrng cngcng susutt
CngCng susutt tt PPtt:: ll cngcng susutt iinn uu vvoo ccaa thithitt bb ddngngiinn ngng vvii iinn pp tt vvoo thithitt bb bbngng iinn pp nhnh mmcc.. TrongTrong thithittkkcoicoi PPtt == PmPm
CngCng susutt trungtrung bbnhnh ((PtbPtb):):t
0 Ptb
P(t).dtA
P = =t T
P
P(t)
Ptb
Hnh 2.6
AP
n
i i
i=1tb n
i
i=1
P .t
P =
t
22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11.. CCcc cc trngtrng cngcng susutt
CngCng susutt trungtrung bbnhnh bbnhnh phngphng PtbbpPtbbp:: lcnglcng susutt ttnhnhtotonn ddaa theotheo cngcng susutt trungtrung bbnhnh bbnhnh phngphng ss mm bboo iiuu kikinntngtng ii vvttnn ththtt cngcng susutt vavttnn ththtt iinn nngnng..
CngCng susutt cccc ii ((PmaxPmax):): -- ll PtbPtb llnn nhnhtt ccaa phuphuttii
-- DDngng ttnhnh ttnn ththtt cngcng susutt llnn
nhnhtt,, chchnn dydy ddnn theotheo iiuu
kikinn phphtt nnngng ddii hhnn
t
2
tbbp
0
1P = . P (t).dt
t
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22.. CCcc cc trngtrng ccaa phuphuttii iinn22..11.. CCcc cc trngtrng cngcng susutt
CngCng susutt nhnh nhnhnn PPnn:: cngcng susutt cccc ii ccaa phuphuttii xuxutthihinn trongtrong ththii giangian rrtt ngngnn
CngCng susutt ttnhnh totonn ((PttPtt):): PhPh titi tnhtnh tonton PttPtt ll cngcng sutsut gigithitthit lulu didi khngkhng ii trongtrong sutsut ququ trnhtrnh lmlm vicvic caca thitthit bb,, nngygy rara mtmt hiuhiu ngng nhitnhit hochoc mcmc huhoihuhoi cchcch inin caca thitthitbb ngng nhnh cngcng sutsut thcthc tt gygy rara chocho thitthit bb.. CngCng sutsut tnhtnhtonton cc dngdng trongtrong thitthit kk cungcung cpincpin..
22.. CCcc cc trngtrng ccaa phuphuttii iinn22..33.. CCcc hhssphuphuttii
HHssnhunhu ccuu KncKnc:: ththngng cc tt rara ii vvii ccccphuphuttii llnn
ii vvii 11 phuphuttii
ii vvii mmtt nhnhmm phuphuttii
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22.. CCcc cc trngtrng ccaa phuphuttii iinn22..33.. CCcc hhssphuphuttii
HHsscccc ii KKmaxmax:: ththngng cc tt ngng vvii caca llmm vivicccc phuphuttii llnn nhnhtt..
HHssngng ththii KtKt:: cc trngtrng chocho mmcc ssddngng iinnngng ththii ccaa cccc phuphuttii..
33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
MMcc chch:: XXcc nhnh phuphuttii ttnhnh totonn ddngng chocho thithittkk,, llaa chchnn thithitt bb..
PhuPhuttii ttnhnh totonnll phuphuttii giagiathithitt lulu ddii,, khngkhngii trongtrong susutt ququ trtrnhnh llmm vivicc,, gygy rara mmtt hihiuu
ququ phphtt nhinhitt ii vvii csccsc vvtt ddnn iinn ccaa hhththngngbbngng vvii cngcng susutt ththcc ttgygy rara trongtrong susutt ququtrtrnhnh llmm vivicc..
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33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
M M
Li phnphi
Mybinpphnphi
Tuphn
phi
Thitb
2
1
3
H p
Trung p
ng
nhnh
CCcc v trv tr ththngng ddngng xxcc nhnh phuphuttii ttnhnh totonn
33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
XXcc nhnh phuphuttii ttnhnh totonn theotheo PPtt vavKKncnc
VVii 11 phuphuttii::
VVii nhinhiuu phuphuttii
PhPhmm vivi pp ddngng::nn giginn tuytuy
nhinnhin kktt ququkhngkhng chchnhnh xxcc,,ththngng ccddngng trongtrong ttnhnhtotonn ss bb
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33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
XXcc nhnh phuphuttii ttnhnh totonn theotheo PPtbtb vavKKmaxmax
PhPhmm vivi pp ddngng::cc xxtt nn llnnvavchchllmmvivicc ccaa ttngngthithitt bb nnnn kkttququ khakhchchnhnh
xxcc..
nnhqhq:: SSthithitt bb llmm vicvic hihiuu ququ
33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
XXcc nhnh nnhqhq
TrTrngng hhpp 11
TrTrngng hhpp 22
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33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
XXcc nhnh nnhqhq
TrTrngng hhpp ccnn llii
BBcc 11:: TTnhnh nn11 vavPP11ll thithitt b cb c cngcng susuttllnn hnhn PPmm maxmax
BBcc 22:: TTnhnh n* =nn* =n11/n/n vavP* = PP* = P11/P/P
BBcc 33:: XXcc nhnh nnhqhq**
BBcc 44:: nhqnhq == nnhqhq* x n* x n
33.. CCcc phngphng phphpp xxcc nhnh phuphuttii ttnhnh totonn
XXcc nhnh phuphuttii ttnhnh totonn theotheo susutt phuphuttii trntrn mmttnn vv didinn ttchch
TrongTrong o::
pp00:: susutt phuphuttii trntrn mmtt nn vv didinn ttchch ssnn xuxutt (kW/m(kW/m22))FF:: DiDinn ttchch ssnn xuxutt (m(m22))
PhPhmm vivi pp ddngng:: ttnhnh totonn ss bbii vviicccc phuphuttii cc mmtt tngtng ii uu trntrndidinn ttchch ssddngng.. cc bibitt ttchch totonn phuphuttii chichiuu ssngng
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ReferencesReferences
http://electrical-engineering-portal.com/
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LL VitVit TinTinEPSDEPSD, SEE,, SEE, HUSTHUST
1.1. GiiGii thiuthiu chungchung
2.2. SS phnphn phiphi titi cccc trmtrm inin3.3. SS hh thngthng chnhchnh
4.4. SS hh thngthng thth cpcp
NiNi dungdung
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11.. GiGiii thithiuu chungchung
YuYu cucu ii vivi cccc ss cungcung cpcp inin
mm bobo tintin cycy cungcung cpcp inin VnVn hnhhnh anan tonton ii vivi ngingi vv thitthit bb LinhLinh hothot vv thunthun tintin trongtrong lplp tt,, vnvn hnhhnh vv sasa chacha.. DD dngdng phtpht trintrin pp ngng ss giagia tngtng caca nhunhu cucu phph titi.. HpHp ll vv mtmt kinhkinh tt..
CcCc vnvn chnhchnh khikhi thitthit lplp ss
CcCc cpcp inin pp vnvn hnhhnh cc imim linlin ktkt vivi ngunngun inin HnhHnh dngdng ss cungcung cpcp inin CcCc phngphng thcthc vnvn hnhhnh
McMc chch chnhchnh caca mnmn hchc::
HH thngthng cungcung cpcp inin ll hh thngthng phnphn phiphi inin..
11.. GiGiii thithiuu chungchung
XcXc nhnh ngunngun inin
NgunNgun ll cccc nhnh mymy ininkhikhi thitthit kk hh thngthng cungcung cpcp inincaca mtmt vngvng hayhay mtmt qucquc giagia.. KhiKhi tata thngthng gigi ll hhthngthng inin..
NgunNgun ll cccc trmtrm binbin pp khukhu vcvcthngthng cpcp inin mtmt khukhuvcvc lnln nhnh thnhthnh phph,, tnhtnh,, vngvng kinhkinh tt.. TrmTrm binbin pp khukhuvcvc lyly inin tt hh thngthng inin cc cpcp inin pp 110110--220220kVkV vv binbinii xungxung cpcp 3535kVkV cpcp inin chocho mngmng inin khukhu vcvc.. TyTytheotheo lnln phph titi,, ss hh thngthng inin mm mimi khukhu vcvc ccthth cc mtmt hayhay nhiunhiu trmtrm binbin pp khukhu vcvc.. tngtng tintin cycy,,mimi trmtrm cc tt nhtnht haihai mymy binbin pp.. CngCng sutsut mimi mymy binbinpp trungtrung giangian tt 2525MVAMVA nn 125125MVA.MVA.
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11.. GiGiii thithiuu chungchung
XcXc nhnh ngunngun inin
NgunNgun ll trmtrm binbin pp trungtrunggiangian cc thth cpcp inin chocho khukhu cngcng nghipnghip,,cccc nhnh mymy cc cngcng sutsut lnln,, cccc khukhu thth hochoc thngthng mimi.. TrmTrm binbin pptrungtrung giangian cc thth lyly inin tt hh thngthng inin cc inin pp 110110--220220kVkV hochoc tt mngmnginin khukhu vcvc 3535kVkV vv binbin ii xungxung inin pp trungtrung giangian 66--2222kV.kV. CcCc trmtrm binbinpp trungtrung giangian thngthng cngcng cc vv trtr quanquan trngtrng trongtrong hh thngthng cungcung cpcp ininnnnn mimi trmtrm cngcng thngthng cc haihai mymy binbin pp.. CngCng sutsut caca mimi mymy binbin pptrungtrung giangian tt 22,,55MVAMVA nn 4040MVAMVA
TrmTrm binbin pp phnphn phiphithngthng ll ngunngun cccc nhmnhm phph titi hh pp nhnh ccccphnphn xngxng trongtrong cccc nhnh mymy cngcng nghipnghip,, cccc cmcm dndn cc,, cccc cc quanquan,,cngcng ss.. TyTy theotheo lnln caca phph titi vv yuyu cucu cungcung cpcp inin mm mimi trmtrm ccthth cc mtmt nn haihai mymy binbin pp.. CngCng sutsut mimi mymy binbin pp phnphn phiphi tt5050kVAkVA nn 25002500kVA.kVA.
TT phnphn phiphi ininll ngunngun cpcp inin chocho cccc nhmnhm phph titi hh pp cngcngsutsut nhnh nhnh mtmt giangian phngphng lmlm vicvic hochoc sinhsinh hothot,, mtmt dydy truyntruyn snsn xutxutnhnh cc cngcng sutsut vivi chcchc kVAkVA
22.. CCcc ss hhththngng cungcung ccpp iinn22..22.. CCcc ddngng ss cungcung ccpp iinn
SS hhnhnh tiatia:: cccc phuphuttii cc ccpp iinn trtrcc titippttngungunn
oo uu iimm:: tintin ccyy caocao ((khikhi sscc11 ngng
dydy thithch cch c ngng dydy obb cctt rara))
ThiThitt kkchchnhnh nhnh bboo vvrr lelenn giginn,, ddttngng hhaa
NhNhcc iimm:: VVnn uu tt llnn ((chichiuu ddii ngng
dydy ddii))
ngng ddngng:: mmngng iinn caocao pp ccppiinn chocho phuphuttii quanquan trtrngng ((phuphuttiicngcng susutt llnn))
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22.. CCcc ss hhththngng cungcung ccpp iinn22..22.. CCcc ddngng ss cungcung ccpp iinn
SS ngng trtrcc chchnhnh::
oo uu iimm:: VVnn uu tt gigimm ((chichiuu ddiingng dydy vavthithitt bb ngng cctt))
NhNhcc iimm:: tintin ccyy cungcung ccpp iinn ththpp
((khikhi ssccngng trtrcc chchnhnh nhinhiuu
phuphuttii mmtt iinn)) KKmm linhlinh hohott khikhi vvnn hhnhnh
ThiThitt kkchchnhnh nhnh bboo vvrr lelephphcc ttpp
ngng ddngng:: ccpp iinn chocho phuphuttii ttquanquan trtrngng ((phuphuttii loloii 22,,33))
22.. CCcc ss hhththngng cungcung ccpp iinn22..22.. CCcc ddngng ss cungcung ccpp iinn
SS hhnn hhpp:: kktt hhpp gigiaa ss hhnhnh tiatiavavngng trtrcc chchnhnhoo C cC c uu nhnhcc iimm ccaa haihai loloii
ss trntrn
oo HHpp lylhhaa gigiaa chichi phph uu tt vav
tintin ccyy cungcung ccpp iinn
ngng ddngng:: ccpp iinn trongtrong cngcngnghinghipp
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22.. CCcc ss hhththngng cungcung ccpp iinn22..22.. CCcc ddngng ss cungcung ccpp iinn
SS mmchch vvngng k knn::oo uu iimm::
oo NngNng caocao tintin ccyy ((mmii phuphuttiiccpp iinn tt22 phphaa))
oo VVnn uu tt rr hnhn
NhNhcc iimm:: KhiKhi cc ssccoonn ngng dydy ggnn
ngungunn khokhmm bboo cc chchttllngng iinn nngnng vaviinn pp
VVnn hhnhnh phphcc ttpp
ThiThitt kkchchnhnh nhnh bboo vvrr lelephphcc ttpp
ngng ddngng:: ccpp iinn chocho mmngng caocaopp tngtng ccngng tintin ccyy..
22.. CCcc ss hhththngng cungcung ccpp iinn22..22.. CCcc ddngng ss cungcung ccpp iinn
SS ddnn susu:: aa ththngng cccc ngng dydycaocao pp ttii ttnn phuphuttiioo uu iimm::
oo GiGimm ttnn ththtt trntrn llii trungtrung pp
oo VVnn uu tt rr hnhn ((TBATGTBATG vavTPPTTTPPTT))
NhNhcc iimm:: TngTng vvnn uu tt ccaa ngng dydy trungtrung pp vavTBAPPTBAPP
VVnn hhnhnh phphcc ttpp,, khokhququnn lyl
ngng ddngng:: ccpp iinn chocho cccc phuphuttii cngcng susutt llnn nnmm susu trongtrongkhukhu vvcc phuphuttii cc mmtt ththpp..
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22.. SS phnphn phphii ttii cccc trtrmm iinn22..11.. GiGiii thithiuu chungchung
SS bbtrtr cccc trtrmm iinn
Cc thitb c bn trong trm phn phi (1ngui, 1 my bin p va4 lra).S trm phn phi - 3D
ThiThitt bb trongtrong trtrmm
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MMyy cctt caocao pp::CCtt ddngng iinn ngngnn mmchch..
CCuu giaogiao caocao pp::CCchch lili cccc bbphphnn trongtrong trtrmm bibinn pp trongtrong ququ trtrnhnh bboo trtr hohoccssaa chchaa,, mmvavngng ii vvii ddngng iinn bbnhnh ththngng ((ttii bb phaphhhngng)) hohocc khikhi khngkhng cc ddngng iinn ((khngkhng ttii) .) .
MMyy bibinn ddngng vavpp oo llngngGiGimm iinn pp vavddngng iinn ccpp iinn chocho cccc ngng hhvavthithitt bb bboovv..
ThiThitt bb phnphn phphii trungtrung pp ((thanhthanh ccii))ThThngng tt trongtrong hhpp hohocc v trv tr ththchch hhpp,, baobao ggmm ccuu giaogiao,, mmyycctt vavcccc thanhthanh ccii,, thithitt bb bboo vvvaviiuu khikhinn..
22.. TrTrmm bibinn pp22..22.. V trV tr tt
CCcc yyuu ttnhnh hhngng::
iinn pp,, giagingng dydy hohocc hhththngng phnphn phphii hohocc dodo ccccnguynnguyn nhnnhn khkhcc..
YuYu ccuu ii vvii v trv tr tt trtrmm
CCngng ggnn tmtm phuphuttii ccngng tttt.. ThuThunn titinn llpp tt,, vvnn chuychuynn,, vvnn hhnhnh vavssaa chchaa.. DDphphngng chchngng chchyy nn,, trtrnhnh bbii bbmm, , nhinhimm nn mmnn.. MMrrngng trongtrong tngtng lailai.. TTnhnh kinhkinh tt((tititt kikimm chichi phph nn bub))
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22.. TrTrmm bibinn pp22..22. Dung. Dung llngng trtrmm bibinn pp
SSllngng mmyy bibinn pp
DungDung llngng
t
n
Kn
SS
.
max
Sn: Cng sut ca my bin p (VA)Smax: Cng sut cc i ca ti
n: Slng my bin p
Kt: Hsnhit hiu chnh.t: Nhit mi trng
t0: Nhit mi trng thit kKol: Hsqu ti thit kca my bin p
QuanQuan trtrngng:: 22 tt quanquan trtrngng:: tt11 nn 22
BBnhnh ththngng:: 11
1001 0ttK
t
=
olt
n
KKn
SS
.).1(
max
For n > 1
MMtt thanhthanh ggpp
++ KKtt ccuu nn giginn,, rr tintin ccyy khngkhng caocao KhngKhng linhlinh hohott trongtrong vvnn hhnhnh
KhoKhkhnkhn khikhi bboo ddngng DDngng thithitt kkcccc trtrmm tt quanquan
trtrngng hohocc cccc tutuphnphn phphii iinnhh pp tt quanquan trtrngng
22.. TrTrmm phnphn phphii22..44.. SS hhththngng thanhthanhggpp
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++ NngNng caocao tintin ccyy cungcungccpp iinn..
GiaGiththnhnh tngtng dodo phphiithmthm mmchch phnphn oonn..
ThThngng ddngng chocho cccc phuphu
ttii quanquan trtrngng trongtrong lliitrungtrung vavhh pp..
ThanhThanh ggpp cc phnphn oonn
22.. TrTrmm phnphn phphii22..44.. SS hhththngng thanhthanhggpp
++ LinhLinh hohott vvii 22 thanhthanh ggpp++ ThanhThanh ggpp chchnhnh cc ththaa rara bboo
ddngng.. VVnn uu tt caocao dodo cc thmthm mmtt thanhthanh
ggpp vavmmii mmchch rara ccnn thmthm 11 daodaoccchch lyly..
44 daodao ccchch lyly chocho 11 mmchch.. KhiKhi sscctrntrn ngng dydy thithcc 22 thanhthanh
ggpp ss mmtt iinn..
HaiHai thanhthanh ggpp
22.. TrTrmm phnphn phphii22..44.. SS hhththngng thanhthanhggpp
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++ MMyy cctt cc ththaa rara ssaa chchaakhngkhng llmm mmtt iinn..
YuYu ccuu nhinhiuu mmyy cctt.. CCcc daodao ccchch lyly phphii hhpp phphcc ttpp
khikhi aa mmyy cctt rara ssaa chchaa..
ThanhThanh ggpp vvngng
22.. TrTrmm phnphn phphii22..44.. SS hhththngng thanhthanhggpp
HHththngng thanhthanh ggpp tintin ccyycaocao
HaiHai thanhthanh ggpp haihai mmyy cctt(a):(a):
MMyy cctt vav (b) (b) VVngng trtrnn (c)(c)
Ch Ch ::
++ nn nhnh caocao++ LinhLinh hohott khikhi ssaa chchaa.. tt ngng ddngng trongtrong trtrmm truytruynn
ttii hohocc nhanhmmyy iinn
(c)
(a) (b)
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ngng dydy:: vvtt liliuu ddnniinn,, hohocc treotreo (OHL).(OHL).
TrnTrn khngkhng:: dydy trtrnn hohocc ccpp..DyDy nhmnhm llii ththpp (ACSR)(ACSR)
ThiThitt bb ttngng ngng llii:: thithitt bb ttbboo vvkhikhi ssccvavrr lele ttngng ngng llii,, cc khakhanngnng kikimm tratra ssccgigiiitrtr..
CCpp:: DyDy cc baobao bbii ccchchiinn vavvvtt liliuu chchngng vava pp..
HHththngng chuchunn
HHnhnh tiatia SongSong songsong
((ChChnhnh,, ththccpp))
MMchch vvngng chchnhnh LLii phnphn bb
uu phapha
33.. KKtt ccuu hhththngng cungcung ccpp iinn33..22.. SS hhththngng
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LL VitVit TinTinEPSDEPSD, SEE,, SEE, HUSTHUST
1.1. KhiKhi nimnim chungchung
2.2. CcCc thnhthnh phnphn chichi phph cc bnbn
3.3. CcCc phngphng phpphp soso snhsnh kinhkinh tt
NiNi dungdung
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11.. KhiKhi nimnim chungchung
PhngPhng phpphp titi uu haha trongtrong nghinnghin cucu hh thngthng ((lplpkk hochhoch,, thitthit kk vv iuiu khinkhin)) cc ngng dngdng trongtrongnhnh gigi kinhkinh tt..
NhngNhng phngphng nn thitthit kk thatha mnmn iuiu kinkin kk thutthutcc aa rara soso snhsnh kinhkinh tt..
tintin cycy:: TiTi uu haha chichi phph ll chichi phph thpthp nhtnht cc thth
chpchp nhnnhn cc.. ngng dungdung :: lala chnchn inin pp,, titi uu mngmng lili,, tittit dindin
dydy dndn, dung, dung lnglng mymy binbin pp,, titi uu dungdung lnglng bb,,qunqun ll nhunhu cucu..
1.1. KhiKhi nimnim chungchung
PhnPhn tchtch KTKT--KTKTthngthng pp dngdng trongtrongnhngnhng bibi tonton sausau:: LaLa chnchn phngphng nn thitthit cungcung cpcp inin,, lala chnchn
thitthit bb inin..
TiTi uu haha chch vnvn hnhhnh ((thitthit bb,, hh thngthng).).
nhnh gigi khkh thithi cccc binbin phpphp nngnng caocao chch tiutiu KTKT--KTKT
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22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
TngTng chichi phph::baobao gmgm tttt cc cccc chichi phph xyxy dngdngvv vnvn hnhhnh hh thngthng..
VnVn uu tt:: uu tt cngcng trnhtrnh nhnh chichi phph xyxy dngdngvv chichi phph muamua smsm thitthit bb..
PhPh tntn vnvn hnhhnh (O&M):(O&M): ChiChi phph vnvn hnhhnh cacathitthit bb hochoc cngcng trnhtrnh trongtrong sutsut thithi giangian ss dngdng..
==
PhPh tntn vnvnhnhhnh (O&M):(O&M):nhnnhn cngcng vv
sasa chacha
VnVn uutt ++
TngTng chichiphph
TrongTrong thttht kk hh thngthng inin,, tonton bb chichi phph chocho dd nn::
VnVn uu tt
PhPh tntn vnvn hnhhnh
VnVn uu tt muamua smsm thitthit bb XyXy dngdng vv lplp tt cngcng trnhtrnh
inin..
ChiChi phph qunqun ll vnvn hnhhnhhnghng nmnm ((CCvhvh))
ChiChi phph tntn thttht inin (C(CEE)) TnTn thttht kinhkinh tt dodo inin
nngnng khngkhng mm bobo (H)(H)
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
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Gi
Dung lng (kVA)
My bin p
Gi
Dung lng (kVA)
Trm bin p
Gi
Tit din (mm2)
Cp
Gi
Dy trn khngTit din (mm2)
CMBA = CFB + CVB xSMBACD = CFD + CVD x F
CMBA , CD: Vn u t MBA v ng dy
CFB , CFD: Vn u t c bn MBA v ng dy.
CVB , CVD: Vn u t iu chnh ca MBA vng dy
SMBA: Dung lng MBA (kVA)
F : Tit din dy dn (mm2)
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
VnVn uu tt ngng dydy vv trmtrm binbin pp
VnVn uu tt (V)(V)
VnVn uu tt muamua smsm thitthit bb Vtb((ngng dydy,, trmtrmbinbin pp,, bobo vv,, ngng ctct ))
VnVn uu tt chocho cngcng tctc xyxy dngdng vv lplp tt cngcng
trnhtrnh Vxd..
V = Vtb +Vxd
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
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PhPh tntn vnvn hnhhnh (Y)(Y)
ChiChi phph qunqun ll vnvn hnhhnh hnghng nmnm ((Cvh)
ChiChi phph tntn thttht inin ((CE).
TnTn thttht kinhkinh tt dodo inin nngnng khngkhng mm bobo (H).(H).
Y = Cvh+ CE+ H
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
ChiChi phph qunqun ll vnvn hnhhnh hnghng nmnm ((Cvh))
CngCng vicvic qunqun ll vnvn hnhhnh thitthit bb hayhay cngcng trnhtrnhinin..
ChiChi phph chocho khukhu haohao,, bobo dngdng vv sasa chacha
TrTr lnglng chocho cngcng nhnnhn
KhonKhon chichi phph phph khckhc ((iuiu kinkin lmlm vicvic ))
Cvh= kvhV
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
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ChiChi phph tntn thttht inin::
TnTn thttht cngcng sutsut
TnTn thttht inin nngnng
ChiChi phph tntn thttht inin::
A: Tn tht in nng (kWh)
: gi tn tht in nng($US/kWh)
CA = A.A = (PU + PI.LLF).8760
PI: Tn tht cng sut do dng in (kW)
PU: Tn tht cng sut do dng in p (kW)
LLF: H s tn tht
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
ChiChi phph tntn thttht inin::
TrongTrong nhiunhiu trngtrng hphp khngkhng xtxt nn tntn thtthtcngcng sutsut,, nnnn chichi phph tntn thttht inin nngnng::
A: Tn tht in nng (kWh)
: gi tn tht in nng ($US/kWh)
CE = CA= A.
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
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TnTn thttht kinhkinh tt dodo inin nngnng khngkhng mm bobo (H)(H)
ChtCht lnglng inin nngnng kmkm gygy tntn thttht kinhkinh tt:: khkh nhnhlnglng vv phmphm vivi rngrng caca cccc hinhin tngtng chtcht lnglnginin nngnng..
ThitThit hihi kinhkinh tt dodo mtmt inin::
GimGim nngnng sutsut hochoc tngtng lnglng phph phmphm
HH hnghng thitthit bb hochoc riri lonlon ququ trnhtrnh cngcng nghngh,, NhnNhn cngcng khngkhng lmlm vicvic dodo mtmt inin..
22.. CcCc thnhthnh phnphn kinhkinh ttccbnbn
ChCh ::VnVn uu tt vv phph tntn vnvn hnhhnh thngthng tt llnghchnghch vivi nhaunhau.. CcCc phngphng phpphp phnphn tchtch nhmnhm tmtmlili giigii titi uu..
33.. PhngPhng phpphp phnphn tchtch kinhkinh ttkkthutthut33..11..PhngPhng phpphp dngdng hmhm chichi phph tnhtnh tonton hnghng nmnm
McMc tiutiu::
SS dngdng nhnh gigi kinhkinh tt dd nn, regulated, regulatedmonopoly.monopoly.
PhPh tntn vnvn hnhhnh hnghng nmnm pp dngdng bngbng nhaunhau chocho
cccc nmnm dd nn.. KtKt ququ titi uu: Chi: Chi phph nhnh nhtnht..
HmHm chichi phph hnghng nmnm:: Z =Z = V.KV.Khqhq+ Y+ YOO MinMin
V:V: VnVn uu tt, Y, YOO:: PhPh tntn vnvn hnhhnh..KKhqhq:: HH ss thuthu hihi vnvn hiuhiu ququ
T:T: ThiThi giangian thuthu hihi vnvn tiutiu chunchun..TrongTrong cngcng nghipnghip (LX), T =(LX), T = 5588 nmnm
11TT
KKhqhq==
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ChCh :: ii vivi mngmng hnhhnh tiatia,, cc thth gigi thitthit HH trongtrong ZZ nhnh nhaunhau
trongtrong cccc phngphng nn vv cc thth bb qua.qua. ngng thithi chichi phph tntnthttht inin,, chch xtxt thnhthnh phnphn chichi phph tntn thttht inin nngnng..
Z = V.Khq+ YO= V.(Khq+ Kvh) + A.
Covh= VKvh: chi ph hng nm cho bo dng sa cha qun lv d phng.
ii vivi dydy dndn,, cc thth xcxc nhnh cc mtmt kinhkinh tt theotheo::
MinF
LIFbaKAVKZ ++=+=
..3).(.. 2
0=
dF
dZ
bKF
IJ
op.
...3 ==
Where
V: Vn u t cho ngdy (V=(a+b.F)L)
: in tr sut ca vt liulm dy dn (.m)
Fop: Thit din dy dn kinht (mm2)
T = 8760h
...3
.bKIF
op=
PhngPhng phpphp dngdng hmhm chichi phph vngvng ii
ChiChi phph vngvng ii (LCC):(LCC): CcCc thitthit bb vv cngcng trnhtrnhinin thngthng cc lplp tt vv vnvn hnhhnh trongtrong mtmtthithi giangian didi vv chichi phph chocho nn trongtrong cccc nmnm khckhc
nhaunhau nhnhnhnh chungchung khckhc nhaunhau.. GiGi trtr hinhin titi thcthc (NPV):(NPV): GiGi trtr quiqui ii vv hinhin titi..
PhnPhn tchtch gigi bb nhtnht:: titi uu kinhkinh tt dd nn chnhchnh lltmtm gigi trtr hinhin thcthc (NPV)(NPV) nhnh nhtnht theotheo chichi phphvngvng ii..
33.. PhngPhng phpphp phnphn tchtch kinhkinh ttkkthutthut33..22.. PhngPhng phpphp dngdng hmhm chichi phph vngvng ii
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GiGi trtr hinhin titi thcthc (NPV)(NPV) Thigian
Gi qui i
Hin ti P
Nm 1 P + P.i = P.(1+i)
Nm 2 P.(1+i) + P.(1+i)xi = P.(1+i)2
Nm n F = P.(1+i)n
ni
FP)1(
1.
+=
GiGi trtr NPV NPV thithi imim hinhin titi ll P,P, gigitrtr NPVNPV caca chichi phph FF xyxy rara cccc nmnm::
HH ss vngvng ii:: nFP iK )1(
1/
+=
nn vv
n
n
i
eFP
)1(
)1(.
+
+=
n:n: nmnm vngvng ii,,ii:: tt ll gimgim gigi ((vdvd. Theo. Theo ttsutsut ngnngn hnghng))
e:e: tt gigi((vdvd.. TT gigi hihi oioi))
33.. PhngPhng phpphp phnphn tchtch kinhkinh ttkkthutthut33..22.. PhngPhng phpphp dngdng hmhm chichi phph vngvng ii
TrongTrong AAkk:: DngDng cccc chichi phph chocho tngtng nmnm kkP:P: GiGi trtr hinhin titi thcthc caca dngdng cccc chichi phph AAkk
(k=(k=00n)n)
MM hnhhnh chichi phph chocho cngcng trnhtrnh inin
n
n
i
A
i
AP
)1(...
1
1
+++
+=
0 1 2 n
A1A2
An
Thi gian
(P)
33.. PhngPhng phpphp phnphn tchtch kinhkinh ttkkthutthut33..22.. PhngPhng phpphp dngdng hmhm chichi phph vngvng ii
= +
=
n
kk
k
iA
1 )1(
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= +=
*
1 )1(
TT
kk
k
i
LOM
=
+=
*
0
*)1.(
T
j
jT
j iCC
VnVn uu tt vv chichi phph vnvn hnhhnh cc quyquy ii vv thithinmnm trctrc nhnh sausau
HmHm chichi phph tnhtnh tonton
==
+++=+=
*
1
*
0
*
)1()1.(
TT
kk
k
T
j
jTj
iLiCOMCTC
MinOMCTC +=
ChiChi phph tnhtnh tonton titi uu vv kinhkinh tt (NPV(NPV nhnh nhtnht))
33.. PhngPhng phpphp phnphn tchtch kinhkinh ttkkthutthut33..22.. PhngPhng phpphp dngdng hmhm chichi phph vngvng ii
NuNu thithi giangian lplp tt ll 11 nmnm (T*=0)(T*=0)
= +
+=
T
kk
k
i
LCTC
1 )1(
NuNu gigi thitthit phph tntn vnvn hnhhnh hnghng nmnm tt thaythay ii ththLLkk=L (k==L (k=11T)T)
AP
T
kk
KLCi
LCTC/
1
.)1(
1. +=
++=
=
ChCh mtmt ss trngtrng hphp ringring nhnh sausau::
ChiChi phph hnghng nmnm nhnh nhtnht
MinLKCAC PA += /.1)1(
)1.(/
+
+=
n
n
PAi
iiKVi
33.. PhngPhng phpphp phnphn tchtch kinhkinh ttkkthutthut33..22.. PhngPhng phpphp dngdng hmhm chichi phph vngvng ii
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 1
LL VitVit TinTinEPSDEPSD, SEE,, SEE, HUSTHUST
1.1. GiiGii thiuthiu chungchung
2.2. SS thaythay thth caca lili inin
3.3. TnhTnh tonton vv inin trongtrong cccc lili inin hh..
4.4. TnhTnh tonton vv inin trongtrong lili inin knkn nn
gingin
NI DUNGNI DUNG
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1.1. GiiGii thiuthiu chungchung
ChngChng tata lmlm gg?? XcXc nhnh cccc thngthng ss chch caca hhthngthng cungcung cpcp inin vv tnhtnh tonton nhnh hnghng nn cccchh thngthng cungcung cpcp inin vv trongtrong thitthit kk..
TnhTnh tonton cici gg??
TnhTnh tonton inin pp titi cccc ntnt vv dngdng cngcng sutsut trntrn tttt cccccc nhnhnhnh caca ss cungcung cpcp inin..
TnhTnh tonton lala chnchn thitthit dindin dydy dndn vv cpcp..
KimKim tratra tntn thttht inin pp,, iuiu chnhchnh inin pp vv bb cngcng sutsutphnphn khngkhng trongtrong lili vv cccc bibi tonton khckhc..
SS thaythay thth hh thngthng vv ngng gigi cccc thngthng ss chch..
22.. SS thaythay thth caca liliinin22..11.. SS thaythay ththdydy dndn
ThngThng ss ngng dydy cc trngtrng chocho ququ trnhtrnh vtvt ll xyxyrara trongtrong dydy dndn khikhi cc inin pp tt lnln hochoc dngdng ininxoayxoay chiuchiu ii qua.qua.
PhtPht nngnng dodo hiuhiu ngng Joule:Joule: inin trtr
DngDng inin XCXC gygy nnnn tt trngtrng tt cmcm caca tngtng dydydndn vv hh cmcm giagia cccc dydy dndn vivi nhaunhau.. inin khngkhng
inin pp caocao pp gygy rara inin trngtrng lnln trntrn bb mtmt dydydndn ((hinhin tngtng ionion haha khngkhng khkh quanhquanh dydy dndn,, hinhintngtng vngvng quangquang)) gygy rara tntn haohao:: inin dndn
inin pp xoayxoay chiuchiu gygy nnnn inin trngtrng giagia cccc dydy dndnvivi nhaunhau vv vivi tt nhnh cccc bnbn tt inin: Dung: Dung dndn..
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Power Delivery Systems, LectureNotes
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22.. SS thaythay thth caca liliinin22..11.. SS thaythay ththdydy dndn
inin trtr
inin trtr mtmt chiuchiu (():):
inin trtr thaythay ii theotheo nhitnhit ::
inin trtr xoayxoay chiuchiu:: mtmt dngdng inin phnphn bb khngkhng uu dodohiuhiu ngng bb mtmt,, RxcRxc >> RdcRdc. . tntn ss 5050Hz,Hz, ss khckhc nhaunhaukhngkhng ngng kk (~(~11%)%) nunu coicoi Rxc~RdcRxc~Rdc
F
Rdc =
: in tr sut ca dy dn(.m)F: Thit din dy dn (m2)
)]t(t[1RR 00t +=
t0: Nhit thit k(20oC)
R0: in tr khi t0(): H s nhit ca in tr
inin khngkhng
0.779r
Dln102
r
D4ln1
8
L m4m0 =
+
=
00:: HH ss dndn tt caca vtvt liuliu chch toto dydy (4(4.10.10--44H/km)H/km)
r:r: BnBn knhknh ngoingoi caca dydy dndn (m)(m)DDmm:: KhongKhong cchcch trungtrung bnhbnh hnhhnh hchc giagia cccc dydy dndn(m)(m)
DDabab,, DDbcbc,, DDacac:: KhongKhong cchcch phapha vivi phapha
0.779r
Dln0.1213fL2X mL ==
(H/km)
(/km)
( )1/3acbcabm DDDD =
r
Dbc
a
b c
r
Dbc
cba
Dab
Dac
DDDm 26.123
==
DDm =
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DungDung dndn
r
Dln18
10
r
Dln
2C
m
9
m
0
=
=
0: Khong cch khng gian ( F/m)r: Bn knh ngoi ca dy dn (m)Dm: Khong cch trung bnh hnh hc gia cc dy dn (GMD) (m)
fC2
1Xc
=(F/km) ; (/km)
90 1036
1
=
inin dndn
2
0
n
c
U
PG =Pc0: Sut tn tht vng quang (W/km)Un: in p nh mc (kV)
(1/km)
22.. SS thaythay thth caca liliinin22..11.. SS thaythay ththdydy dndn
CcCc dngdng ss thaythay thth caca dydy dndn
MngMng 22 caca hnhhnh
HnhHnh
TngTng trtr: Z=: Z=R+jXR+jX=(r=(r00+jx+jx00).l).l TngTng dndn: Y=: Y=G+jBG+jB=(g=(g00+jb+jb00).l; (l:).l; (l: ChiuChiu didi, km), km)
HH thngthng phnphn phiphi ((ngnngn hnhn 8080km)km)
ngng dydy trntrn khngkhng hochoc cpcp UU2222kV, lkV, l55km: Dungkm: Dung dndn vvinin dndn cc thth bb quaqua.. SS thaythay thth bibi tngtng trtr nini tiptip..
ii vivi ngng dydy didi U>U>2222kV:kV: ChCh bb quaqua inin dndn..
R L
G2
G2
C2
C2
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 5
22.. SS thaythay thth caca liliinin22..11.. SS thaythay ththmymy binbin pp
SS thaythay thth caca mymy binbin pp
TngTng dndn mymy binbin pp (Z(ZTT))
SS thaythay thth
2
2
.r
rlT
S
UPR =
r
rI
r
ITT
S
Uu
I
uZX
2%.
==
RT XT
RcXm
ZT= RT+ jXT
S0
2
0
r
cI
PR
=
0I
UX r
m =
RT, XL: in tr v in khng vng dy
Rc: in tr do tn tht trong cc cun dyXm: in khng do t trngSr , Ur: Dung lng MBA v in pPI, P0: Tn tht c ti v khng tiuI: in p ngn mch (%)I0: Dng in khng ti (t trng)
rUjIPQjPS 00000 +=+=
MyMy binbin pp 33 cuncun dydy
SS thaythay thth
ZP
S0
ZS1
ZS2
)ZZ(ZZ
)ZZ(ZZ
)ZZ(ZZ
SPSSSPS
SPSSSPS
SSSPSPP
12122
22111
2121
2
12
12
1
+=
+=
+=
r
rSP
r
rSPSPSPSP
S
%.Uuj
S
.UPjXRZ
2
1
2
2
1111
+=+=
TngTng trtr cuncun dydy
RP-S1, XP-S1: Tng tr cun s cp th cp th 1Sr , Ur: Dung lng MBA v in pPI, uI : Tn tht c ti v in p c ti khi cun s cp v th
cp th 1 kt ni vi h thng. Cun th cp th 2 m.
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33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thtthtinin pp
TnTn thttht inin pp trntrn ngng dydy
)Im()Re().(3 ZIjZIjXRIVVV LS +=+== &&&&
rL V
QXPR
V
QXPRXRIZIV +
+
=+= )sincos(3)Re(
R, X: Tng tr mt phaVr: in p dy (L-L)VS: in p ngun (L-L)VL: in p ph ti (L-L)I: Dng tiP, Q: cng sut ti 3 pha kW v kVar
PL+jQL
R+jX VLVS
33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thtthtinin pp
HH ss tntn thttht KKdd:: TnTn thttht inin pp phnphn trmtrm ((V%)V%) trntrnngng dydy tnhtnh vivi 11 kmkm ngng dydy vv cpcp chocho titi 33 phapha 11 kVAkVA..
KKdd TraTra cucu trongtrong ss taytay tratra cucu ((hh ss cngcng sutsut).).
)sincos(
100
100 2 XRVV
V
K rrd
+
=
kmkVA.
%
TnTn thttht inin pp trntrn ngng dydy ii vivi ngng dydynhiunhiu phph titi
( )=
+=
n
i
iiii
r
XQRPV
V1
1 RiXi: Tng tr trn on ng dy
th iVr: in p (L-L)Pi, Qi: Cng sut tc dng kW v phn
khng kVar chy trn onng dy th i.
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3.3. TnTn thtthtinin pp vv cngcng sutsut3.1.3.1. TnTn thtthtinin pp
TnTn thttht inin pp ii vivi ngng dydy cc phph titi phnphn bbuuXc nh tn tht in p do cngsut tc dng gy trn on ngdy dx ti chiu di ng dy xt cui
Ngun
l
xdx
L / 2 L / 2
P = P0.l
rr
xxPx
V
dxrxP
V
dRPVd
....00
==
rr
l
r
PV
RP
V
lrP
V
dxxrPV
.2
.
.2
..... 2
00
0
00===
Tng tn tht in p do cng sut tc dng
Tng t,r
QV
XQV
.2
.=
r
QPV
XQRPVVV
.2
.. +=+=
TngTng thttht cngcng sutsut trntrn ngng dydy
R
V
SRIP
L
LL
=
2
2
3
3..3
XV
QPQ
r
LL
+=
2
22
PL+jQ
L
R+jX VLVS
R, X: Tng tr 1 phaVr: in p dyVS: in p ngunVL: in p tiIL: Dng in tiP, Q: Cng sut tc dung v
phn khng ca ph ti 3pha
RV
QPR
V
S
r
LL
L
L
+=
2
22
2
2
TnTn thttht cngcng sutsut tctc dngdng::
TnTn thttht cngcng sutsut phnphn khngkhng
33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thttht cngcng sutsut vvinin nngnng
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 8
33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thttht cngcng sutsut vvinin nngnng
TnTn thttht cngcng sutsut caca ngng dydy cc phph titi phnphn bbuu
MtMt phph titi II00(A/m),(A/m), chiuchiu didi l (m)l (m)
TnTn thttht cngcng sutsut trntrn vivi phnphn dxdx caca ngng dydy
dxrxIRIPd xxx ..)..(3..3)( 02
0
2==
TnTn thttht trntrn tonton tuyntuyn::
RIlrIdxxrIP
l
.......3 23
0
2
0
0
2
0
2
0 ===
PhnPhn bb titi trntrn lili
DngDng inin (( )) vv tngtng trtr ((Z=z0.l))
PhnPhn bb hnhhnh chch nhtnht ::
Ti phn b ti v tr 1/3 chiudi ng dy
=
2
3
13 TIZP
PhnPhn bb hnhhnh tamtam gicgic ::
r
T.V3
D.l.wI =
Ti phn b ti v tr 8/15 trongkhong cch t nh n dy catam gic.
=
2
15
83 TIZP
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Power Delivery Systems, LectureNotes
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TnTn thttht cngcng sutsut trongtrong mymy binbin pp
TnTn thttht cngcng sutsut tctc dngdng vv phnphn khngkhng
I
r
PS
S
nPnP
+=
2
max0
1
r
IT
S
Su
n
SInQ
100
%1
100
% 2
max0 +
=
Sr : Dung lng my bin pSmax: Cng sut ti cc i ca trm bin p.PI, P0: Tn tht ngn mch v khng tiuI: in p ngn mch (in %)I0: Dng in khng ti (%)n: S my bin p trong trm (lm vic song song)
33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thttht cngcng sutsut vvinin nngnng
TnhTnh tonton tntn thttht inin nngnng
nhnh nghangha ((A)A) ::
=
T
dttPA0
)( P(t) :Tn tht cng sut ca li in
T: Khong thi gian trn th ph ti
TnTn thttht inin nngnng::
= maxPA Pmax: Tn tht cng sut cc i
: Thi gian tn tht cng sut ln nht
33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thttht cngcng sutsut vvinin nngnng
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 10
TnhTnh thithi giangian tntn thttht cngcng sutsut lnln nhtnht (())
SS dngdng biubiu phph titi cccc ii TTmmQuanQuan hh giagia vv TTmm
8760)10124.0( 24
+=
mT
==T
m dttPPP
AT
0maxmax
)(1
1 : th ph ti h thng2 : vng giao gia Pmaxv Tm
Tm: Tra trong s tay thit k.
33.. TnTn thtthtinin pp vv cngcng sutsut33..11.. TnTn thttht cngcng sutsut vvinin nngnng
TTP
A
P
PF avS
=
=
=
maxmax
Pav: Tn tht cng suttrung bnh
SS dngdng hh ss tntn thttht (Fs)(Fs)
TFS=
TnhTnh hh ss tntn thttht cngcng sutsut (Fs)(Fs)QuanQuan hh giagia FFSSvv FFLL
2)1( LLS FcFcF +=
FL: H s ph tic = 0.2 (Anh v c)c = 0.3 (M, th)c = 0.16 (M, nng nghip)
3.3. TnTn thtthtinin pp vv cngcng sutsut3.1.3.1. TnTn thttht cngcng sutsut vvinin nngnng
FL: Tra trong s tay thit k.
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 11
TnTn thttht inin nngnng caca ngng dydy
= .maxPA Pmax: Tn tht cng sut cc i: Thi gian tn tht cng sutln nht
TnTn thttht inin nngnng trongtrong trmtrm binbin pp
TFPS
S
nPnP
S
S
nTPnA sI
r
I
r
+=
+= ...
1....
1..
2
max0
2
max0
Sr : Cng sut ca my bin pSmax: Cng sut cc i ca trm.PI, P0:Tn tht c ti v khng tin : S lng my bin p trong trm (lm vic song song)T : Thi gian ng in my bin p (1 nm: 8760h)
3.3. TnTn thtthtinin pp vv cngcng sutsut3.1.3.1. TnTn thttht cngcng sutsut vvinin nngnng
TFP s..max=
V d 2. Xt trm bin p trung gian c 2 my bin p vi cc thng sSmB = 10MVA, cp in p 132/11kV. Tn tht khng ti 18kW v cti 60kW, in p ngn mch % l 10.5%, dng in khng ti % l0.9%. Xc nh tn tht cng sut v tn tht in nng ca trm binp vi ph ti 12+j7.2MVA, Tm=5000h/nm.
p n: My bin p lm vic song song
)(75.946010
2.712
2
1182..
1.
2
222
max0 kWP
S
S
nPnP I
r
=
++=
+=
)(1208 kVAr=
34116010
2.712
2
18760182...
1..
2
222
max0
++=
+=
I
r
PS
S
nTPnA
)(34118760)105000124.0(8760)10124.0( 2424 hT
m =+=+= x
)(5083854 kWh=
10.100
10)2.712(5.10
2
1
100
10109.02
.100
%1
100
%.
32232
max0 ++
=+=
r
IT
S
.Su.
n
.SInQ
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 12
cc imim lili inin hh LiLi inin cc mtmt ngunngun cpcp,, SS cc dngdng hnhhnh tiatia,, linlin thngthng ((phnphn nhnhnhnh)) hochoc hnhn
hphp..
SS liuliu banban uu
SS lili inin,, CcCc thngthng ss caca ngng dydy vv mymy binbin pp,, inin pp ngunngun UoUo
CngCng sutsut cccc ntnt phph titi.. NhimNhim vv tnhtnh tonton
DngDng inin vv cngcng sutsut chychy trntrn cccc nhnhnhnh TnTn thttht cngcng sutsut trntrn cccc nhnhnhnh TnTn thttht inin pp cccc nhnhnhnh vv inin pp cccc ntnt trntrn lili..
44.. TnhTnh tonton dngdng cngcng sutsut44..11.. ThitThit lplp bibi tonton
TnhTnh tonton lili inin khngkhng xtxt nn tngtng dndn ngng dydy ((lili phnphnphiphi inin))
CcCc gigi thitthit tnhtnh tonton:: SS thaythay thth chch xtxt thnhthnh phnphn inin trtr vv inin khngkhng ngng
dydy ((ngng dydy trntrn khngkhng trungtrung vv hh pp U
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 14
V d 4.
S thay th Dng cng sut v tn tht
trn cc nhnh
i j
2
Qj ij
iS& ijS
& '
ij
S&j
S&
2
Qj ij
ij
S&
ijZ
2
QjSS ijj
'ij =
&& 2rijij .UBQ =
ij'ijij SSS &&& += )j.X.(R
U
QP)j.X.(R
U
)S(S ijij2
r
2ij
2ij
ijij2r
2'ij
ij ++
=+=
&&
2
QjSS ijiji =
&&
Tn tht in p trn cc nhnh v in p ti cc nt
0
01010101
0
0101010101
U
.RQ.XPj
U
.XQ.RPU
+
+=&
0101 UUU &&& =
i
ijijijij
i
ijijijijij
U
.RQ.XPj
U
.XQ.RPU
+
+=&
ijij UUU &&& =
;
;
TnhTnh tonton vv inin trongtrong lili inin knkn nn gingin
44.. TnhTnh tonton dngdng cngcng sutsut44..22.. PhngPhng phpphp gngnngng
0
1 2
1S&
2S&
01S&
02S&
12S&
0.ZI.ZI.ZI 020212120101 =+ &&&
r
01
0
0101
U3
SU3
SI
=&
0.ZS.ZS.ZS 020212120101 =+
r
0202
U3SI
&
r
1212
U3
SI
&
Dng cng sut trn cc nhnh
0 1 2 001S& 02S
&12S
&
1S&
2S&
Trong ; ;
p dng lut Kirchhoff xc nh in p:
(1)
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Power Delivery Systems, LectureNotes
Bach Quoc Khanh, Dept. of ElectricPower Systems, SEE, HUST 15
021201
0220212101ZZZ
ZS)ZZ(SS
++
++
=
&&
&021201
0111201202ZZZ
ZS)ZZ(SS
++
++
=
&&
&
20210112 SSSSS &&&&& +==
0SSS 11201 = &&&
0SSS 21202 =+ &&&
Tnh dngin theo Kirchhoff ti nt ph ti 1 v 2
44.. TnhTnh tonton dngdng cngcng sutsut44..22.. PhngPhng phpphp gngnngng
(2)
(3)
T (1), (2) v (3), ta c
;
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1
LL VitVit TinTinEPSDEPSD, SEE,, SEE, HUSTHUST
1.1. KhiKhi nimnim chungchung
2.2. CcCc hh nn vv dngdng trongtrong tnhtnh tontonngnngn mchmch
3.3. TnhTnh tonton ngnngn mchmch
NI DUNGNI DUNG
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3
1.1. KhiKhi nimnim chungchung
CcCc dngdng ngnngn mchmch::
NgnNgn mchmch cncn bngbng::
NgnNgn mchmch baba phapha hochocvivi cpcp (3(3))
NgnNgn mchmch khngkhng cncnbngbng::
HaiHai phapha (L(L--L)L)HaiHai phapha chmchm tt (2 LG)(2 LG)
MtMt phapha chmchm tt (SLG)(SLG)
Dng ngnmch
Xc xut xuthin
NM SLG 70%
NM L-L 15%
NM 2 LG 10%
NM 3 5%
XcXc xutxut xutxut hinhhinh cccchinhin tngtng ngnngn mchmch
11.. KhiKhi nimnim chungchung
NguynNguyn nhnnhn ngnngnmchmch::
LoLo haha cchcch ininhochoc tctc ngng nhitnhitlmlm hnghng cchcch inin
caca thitthit bb.. TcTc ngng cc khkh dodo
concon ngingi,, scsc vtvt,,gigi bobo..
StSt nhnh vovo hhthngthng inin..
ThaoThao tctc nhmnhm trongtrongvnvn hnhhnh hh thngthnginin
St nh
Cy
Hng thit b
ng vtGi
BiTai nn
Bng/tuyt
Tcng do xy dngPh hoi
Khc
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4
11.. KhiKhi nimnim chungchung
TcTc ngng::
MtMt nn nhnh hh thngthng inin,, gygy ss cc mtmt inin lanlan trntrn
GyGy nhiunhiu cccc ngng dydy linlin lclc
TcTc ngng nhitnhit:: toto rara xungxung lnglng nhitnhit ll ((thmthm chch hhquangquang)) ss tt nngnng vv phph hyhy cchcch inin
TcTc ngng cc hchc:: toto rara xungxung lclc inin ngng phph hyhy cccc ktktcucu cc khkh caca thitthit bb inin..
McMc chch caca tnhtnh tonton ngnngn mchmch::
LaLa chnchn vv kimkim tratra thitthit bb inin
ThitThit kk,, tnhtnh tonton chnhchnh nhnh cccc hh thngthng bobo vv rr lele
PhnPhn tchtch nhnh ngng
nhnh gigi chtcht lnglng inin nngnng..
22.. HH nn vv tngtngii ccbnbn
nhnh nghangha:: CcCc ii lnglng cc biubiu dindin bngbng trtr ss tngtngii cc bnbn
Gi tr thc (n v c tn)
i lng c bn c chn trong cng n vGi p.u. =
CcCc ii lnglng:: DngDng inin (I),(I), inin pp (V),(V), cngcng sutsut biubiukinkin (S)(S) vv tngtng trtr (Z)(Z) trongtrong hh thngthng baba phapha..
b
puV
VV =
b
puI
II =
b
puS
SS =
b
puZ
ZZ =;; ;; ;;
bbb VIS = 3b
bb
V
SI
=
3b
bb
S
VZ
2
=
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5
2.2. HH nn vv tngtngii ccbnbn
MiMi linlin hh giagia cccc hh nn vv tngtng ii cc bnbn khckhcnhaunhau::
HH nn vv cc tntn::
V (V), I (A), S (VA), Z (Ohm).V (V), I (A), S (VA), Z (Ohm).
2'
2''
b
b
b
bpupu
V
V
S
SZZ =
:: HH nn vv cc
:: HH nn vv mimipuZ'
puZ
TiuTiu chunchun : IEC: IEC 6090960909
PhngPhng phpphp tnhtnh tontonngnngn mchmch::NgunNgun inin pp thaythay ththtt
titi vv trtr ngnngn mchmch..
33.. TnhTnh tonton ngnngn mchmch33..11.. TngTng quanquan chungchung
in p nh mc ca h thngVn
HH ss inin pp cctrong tnh ton
Dng ngn mch lnnht (cmax)
Dng ngn mchnh nht (cmin)
H p (100V n 1000V)Sai s +6%Sai s +10%
1.051.1
0.950.95
Trung p v cao p (1kV n550kV)
1.1 1
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6
CcCc gigi thitthit
NgnNgn mchmch trongtrong hh thngthng cungcung cpcp inin..
BB quaqua bobo haha tt ((khikhi inin khngkhng caca phnphn tt ll hnghng ssvv mchmch inin ll tuyntuyn tnhtnh).).
BB quaqua nhnh hnghng caca cccc phph titi tnhtnh vv cccc phph titi ngng cccngcng sutsut nhnh..
BB quaqua tctc dngdng caca cccc thngthng ss cc trtr ss bb nhnh tngtng dndncaca ngng dydy,, mchmch tt haha mymy binbin pp,, inin trtr dydy qunqunmymy phtpht,, mymy binbin pp vv mtmt ss ngng dydy caocao pp..
HH thngthng scsc inin ngng baba phapha caca ngunngun ll ii xngxng..
33.. TnhTnh tonton ngnngn mchmch33..11.. CcCc gigithitthit
SS thaythay thth hh thngthng baba phapha
HH thngthng::
"
2
kQ
nQ
QS
UcZ
=
Hthng
Q
RS
XSQ
"kQS
nQU
: Cng sut ngn mch cnbng.
: Tng tr ca h thng
: H s in p (IEC 60 909-0)
QZ
"
kQS
c
QQ ZX = )35( kVVn >
QQ ZX = 995.0 )35( kVVn
33.. TnhTnh tonton ngnngn mchmch33..33.. TngTng trtrcccc thitthit bb
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7
SS thaythay thth hh thngthng 33 phapha
ngng cc ngng bb::
''
dGG jXRZ +=
''12.0 dG XR =
i vi my pht h p.
''05.0 dG XR =
i vi my pht cao p (>1kV).
( )MVASrG 100
''7.0 dG XR = ( )MVASrG 100