47_nguyen tac to chuc he thong nguon dien tram vien thong_small

7/25/2019 47_nguyen Tac to Chuc He Thong Nguon Dien Tram Vien Thong_small

1/94

TO

CHC

H

THONG

NGU N

BIN

TRM

V NTHNG


2/94


3/94

TP

O N U

CHNHVINTHNGVI T

NAM

NGUYNTc

T CHC H THNG

NGU N

I

N

TRM VIN THNG

N H

XUT B N

U IN

H N i-2008

T VINKHO HC KTHU T

U IN

PH B N:'..


4/94

Ms :

HV 7 M8


5/94

LINI U

H thng ngun

in vin

thng

l

mt h thng

in,

cc

thitbincktni vinhautheomt nguyntc cht h

thc hinnhim v cp ngun cho trmvin thngm bo

hotnglin tc,an tontrongmiiukin. cutrch

thngngun

i

n vinthng bao gm: h thng cung cp

i

n

xoay

chiu

h

thng

cung cpi

n

mt

chiu

h

thngtip

t.

Nhm thc hin tt vic tchc h thng ngunin,quy

nh khai thc v bodng h thng ngun in trm vin

thng;Tng Cngty(naylTpon) BuchnhVin thng

Vit

Nam ban hnh "Nguyn tc t chc h thng ngun

i

n trm vin thng" Quyt

nh s

401/Q-VT ngy

16/02/2006 v Quy nh khai thc v bo dng h thng

ngun

in

trm

vin thng"

Quyt

nh

s1539/Q-VT ngy

16/10/2006).

gipcho cc cn b k thut thuc vinthng cct nh,

thnh ph thunli trongcng tc qunl,khai thc v bo

d

ng h thng ngun

i

n vin thng;Nh xut bn

Bui

n

phi

hp

vi

Vnphng (VNPT)

xut

bn sch"Nguyn tc t

chc h thng ngun n trm vi n thng".

Ni dung cun schgii thiuv Nguyn tc t chc h

thng ngun in trm vinthng; Quy nh khaithc, bo


6/94

d

ng h thng ngun

i

n trm vin thng; v phn p h lc

trch dn Tiu chun Ng nh 68-141:1999 -

Tip

t cho cc

cng trnh vin thng - Yu cu k thut.

Nh xut bn Bu in trn trng cm n s hp tc ca

Vn

phng, Ban Vin thng (VNPT) v xin gii thiu cng b n

c.

Cc kin gp ca bn c xin gi v h xut bn Bu in

-18 Nguyn Du - H N i;

i

n thoi: 04.5772143, Fax: 04.5772037.

Trn trng cm

n

H

N i, thng 7

nm 2008

NH

XUT BN

U I

N


7/94

TNGC N GTY CNG HOA XHICH

NGH

VITNAM

BUI!CHNH VIN TH NG

c

l p

- T do - H n h phc

VIT

NAM

S:4 0 1 Q - V T

H

ni,

ngy 16

thng

02nm

2 6

QUYT

NH CA TONG GIMc

V

vic:Ban

hnh "Nguyn

tc t chc

h thng ngun

i

ntrmvinthng"

TNG GIM

C

TNG

CNG

TY

u CHNH

VIN TH N G

VIT

NAM

-

Cn

c Ngh

nh 5IICP ngy 011811995 ca Chnh ph ph

duyti l t chc

v hot

ng ca Tng cng

ty

Bu

hnh

vin thng VitNam;

-Xtnhu cuthc tvcngtc t chchth ngngunin

trmvin thng;

-

Theo

ngh

ca/

Tr

ng ban

Vin thng,

QUYT

NH:

u 1

anhnhkm

theo quyt

nh

ny"Nguyntc t

chc h thng ngunintrmvin thng .

u

2

Quyt

nhny ch i u lc t ihnh sau15ngyk

t

ngyk.

u

3

Cc

ng(b) Chnhvnphng,ThtrngccBan

chcnng cc nvtrcthucTngCngty,Gimc cc u

i

n

t nh,

thnh ph v cc

n

v

c

lin

quan

chu

trch

nhim

t i

hnh

quyt

nh

ny./.

K7T.

TNGGIM

c

P H

TNG

G I M

C

k:Tr nM nh

Hng

5


8/94

TONG N GTY U

HNHM NT H N G

VIT

NAM

CNG

HOA X MI CHNGH

VIT

NAM

c lp

T

do Hnhphc

NGUYN

TC

T

CHC H

T H N G

NGUN

IN

TRM

VIN T H N G

(Ban hnh theo uyt

nh s

401IQ VT ngy 1610212006

ca Tng Gim c Tng Cng yBCVT Vi tNam

H

thng

neun

i

n-vin

thng HTNVT)

mt h

thng

i

n,ccthitb

i

n

cktn i vi nhautheom t nguyntc

cht h

thc h innhim

v cp

ngun

cho

trm vin

thng

m

bohot

ng lin

tc,

an ton

t r o n g

m i

iukin.

.

C UT R CH

THNG NGUN

IN VIN T H N G

Cu trc ca h

thng

bao gm: h

thng

cung

cp

in xoay

chiu;

h thng

cung

cp

i

n

mt

chiu;

h

thng

tip t.

1.1.

H

thngin

xoay

hiu

thngi

n xoayc h i ubaogm: trm caoth ybin

th. y

pht

in,

t

chuyniin,

cc t phn

p h iinv

mngl

i

dy, cp

in thc hinktni gi angunv i

cc

thit

btiuth

i

n.

Trm

cao

th

gm

nhng thit

b

thc hinnhim

v

tipnhn

ngun

i

n

cao

t h

xoay

chiu

t

l

i

i

n quc

gia

phn

p h i

cho

cc m y

bin th.

M y bin th cnhimvbin

i nguncaot h xoay chiu

thnhngun

i

nht h cungcp chotrungtm/trm v i nthng

(TTVT/TVT). Ngun

i

nny cvaitr ch

o v ctnh

thng trc.


9/94

y phtin thc hinchcnng phtin cungcp cho

TTVT/TVT

k h i

khng cnguninl

i

hoc

cht

lngngun

khng

m bo cc tiu

chun

k

thut.

Ngun

in

do m y pht

in cun g cpmang tnh d phng.

T

chuyniinthc hi nchuyni

s

dng ngu nin

lihoc ngun

m y pht

in.

T phn

p h iin

lm

nhim

v

tipnhn

v phn

p h i

cho

cc ph

t i.

1.2.

H

thngin

m t

c h i u

H

thng

inm t

c h i u

baogm:thitb nnin, acquy,

cc

t

phn

p h i

i

n

vm ng

lidy,

cpi

n ch

lm

nhim

v

truyntiinmtc h i u

T h i t

b nn

in thc hin

nn dng

in xoay c h i u

thnh

dngmt

c h i u

c

in

p ph h p np cho

acquy

v cp cho cc

phtis dng ngu n

mt

c h i u

cquy thc hinchcnng

d

tr nng l

ng

d

i

dng

hoa

nng,acquy

c

n isong songv i

u

ra

ca m y nn v ph

t i,

bnh

th

ng

acquy

c h

np

m

k h i

khng c

ngu n xoa y

c h i uhoc

m y nn khng lm

vic,acquy

duy

tr ngunin

mt

c h i u

cungcp cho ph

t i .

Trongh

thng

inm t

c h i u

acquy

cp ngun

ma ng tnh d phng.

T phn

p h i in

mt

c h i u

c

nhim

v

tip nhn ngun

i

n

mt

c h i ut

m y

nn,acquy

phn

p h i

ch o cc ph

ti .

1.3.

H thng

tipt

H

thng

tip

t

bao gm: cc t

tip

t,

tm

tip

t,

h

thng

dy tip

t.Cct tiptgm:ttiptcng tcthc

h i n

chcnng tipt cng tc vtipt bov;ttipt

chng

st

ctanten;t tipt chng

st

t r m v i n

thng. Cc t

tipt

ny

phi

c

tr

sm bo yu cu T C N

68-141:

1999 v

cn i

ng

t h v inhaut o

thnh mt h

thng

duy

nht.

7


10/94

H.

NG UYN TC TCHCHTHNG NGU N N VI N T H N G

2.1.

Nguyn

t c

chung

.

H

thng

ngun

i

n -

v i n

thng

H T N V T )

phi

c t

chcph hp

v i

q uy m, tm

quantrng ca

trm

v i nthng,m

bocc yuc uvkthutvk i n h t.

2.Hthng

N V T

phi

cthc

h i n

trn nguyn

tc

thng

trc/d

phng inli/My phtin;

my

nn/Acquy)

m

bo cungcpin lintcan ton chotrm v i nthnghotng

24/24gi.

3.

Tt

c cc

thit

b vi n

thng trn

mng

s

dng

ngun

i

n

chunl: -48V DC,-24VDC;220/380V Ctans 50Hz.

4.Ttc ccthitb cngnghthngti nnh ccServer my

c h ) ,Router( b

nh

tuyn),L A N

SWITCH

(chuyn

mch

LA N)

t

ticc

t r u n gtm kthut,i

trm

v i n

thng

c

nhu c u

s

dngnguninxoay

c h i uu

tin cbit

phi

sdng

thitb

Inverter thitb

chuyn

ingun

c h i u

thnhngun xoay

chiu 48VDC 220V C

dng

chungngun48V DC

chuy n

i

i

n p

ngun,

c

bit

l cc

thit

b

quan

t r n g

lin

quan

n

nhtuyn,

an ton

mng

bo

m

thi

gianhot

ng

qu i

nh

khi

mt

i

n

l

i

v d x l

k h i

b s

c;

nhng

tr

ng

hp:

khng

cngun48V DC,hoc du nglng khngpngchoc

khongcch

t nilpt

cc

thit

b cngnghthngt i nny

n

h

thng

48V DC

khng

m

bo cc tiu

chun

k

thut

th c

th

dng

UPS _

ONLINE

d

phng

theo

c h

n + 1 ,m

bo

c th

cpi

n an

ton,

lin

t c

c ho cc ph ti

theo

thi

g i a n q u i

nh.

5.

Hthng

N V T

phi

c

thit

k vut

m

bo nng

lcpng d bo phtit r o n g02nmcatrmv i nthng vc

kh

nngm

rng

linh

hot theo

t ng giaion phttrinca ph

t

t r o n g

10

nmtip

theo.

Hnc h t i vic thay t h

cc

thit

b

utv icha ih thngngunmtc h i uvxoay chiu.


11/94

6. Tr

ng hp

c

bit:

nhngni xaxi

h o lnh khng c

ngunin

li;

H T N V T

phit

chckt

h p cc

dng n gu n

i

n

khc

nh

pin

mt

t r i ,

m y pht

i

n ch y bng

sc gi

vi

m y

n phti

n

v

acquy

m bo an ton thngt i nc h o trm

vi nthng sc qu ynh ring

v

h

th ng

ngunin

loi

ny).

7.S tngquanh

th ng

ngunin -v i nthng:

9


12/94

2.2.Phn

loi

h thngnguninv i nthng

H T N V T

c phn

theo

quy m v tm

quantrng

ca

loi

trm/trung

tm

vin

thng m nphc v.

Theo

nguyntcny,

H T N V T

c phn lm 4

loi:

c

bit,loi ,loi

2 v

loi

3.

2.2.1.

TNVT

bi t

L

nhng

h

thng

ngunin bo

m thng

tinl nlccho

cc

trungtm k thut vi nthngcbitquantrngcth nhsau

1


13/94

. Tru ng

tm k

t h u t v i nthngquct;

2 Trungtm kt h u t v i nthng lin tnh cpmin;

3 Trung

tm k

t h u t v i nthngd ing cpmin:ni

c cc

tngiG M S Chotng;

4.Trung

tm kt h u t v i n

thngnihtca ccmngniht

c cctngitandemn i httch ring

v

t

t r o n g

kh u vc ca

t r u n g

tm;

5.

Trungtmt r u y

s

liu,I n t e r n e t

cp

min:nic cc nt

mngquct vcpmin;

TNVT lo i

Lnhng

h

thngngun

i

nbo

m

thng

t in

linlc

cho

cci trm

v i n

thngquan

t r n g

cp,c thnhsau:

Trung

tm

t r u y dn lintnhvng;

2.Trung

tmt r u y

dn

v

chuyn

mch

ni

tnh:ni

t

cc

tngiHostvcc ntt r u y

dn

tr c

nitnh ca cc

mng

n i

ht

cha

c

tng

i

tandem

ni

ht

tch

ra

hot

ng

c

lp.

3.T r m v i n t h n o ni

c

cctngiHost

MSC BSC nt

t r u y

s

liu,POPI n t e r n e t

k hu vc catnh,thnh p h;

2.2.3. TNVT lo i

Lnhnghthngnguninbomthngt i nlinlccho

cctrm

v i n

thng cp

2

nh:

cc

tng

ivtinh,DS L A M c

dungl

ng>

2 56 thubao,

BTS

cdungl

ng>

3TRX,

nt t r u v

dn,

t r u y

s

liu

n itnhhoc

tng ng.

4 TNVT lo i

3

Lnhng

hthng

ngun

in

bo

m

thng

t i n

linlc

cho

cc

trm v i n

thng

nh ,n

g i n

nh:ccnt

t uy

nhp,DS LA M

cdunglng


14/94

Trongtrng

hp c

nhiu

t itb

vinthngttrong trm

thH T N V T cxcnhbi

loi t it

bvinthngtrong trm

c

qui

m

v tm

quan

trng cao nht

nh

nu

trong

cc

mc

trn

Nhngtrng

hp

khc khngthuc

ccloinu

trn,hoc

cc

n

vmunchuyn

loi

cho

h

thng

ngun

i

n

do

c

th th

phicgi i

trnh

v

c Tn g Cng t y

BCVTVN'*'

(Ban

Vin

thn thmnh v cngnhn.

Ccs

liu

vdunglngtrm vinthngnutrnls

li u

dbodunglng pht

trin

catrm vinthngtrong3nmkhi

cnxcnhloih thngngunin.

2.3.

H

thng

cung

cp

i

n

xoay

chiu

H

thng

cungcp

in

xoaychiu trongtrm vinthng

c

t it

kbo

m

cc nguyn

tc sau:

1.

Cng sut

ca hthng

nguninxoay chiuphi

m

bo cungcpin ch o cc p h

t i

trong

thi

gian

d bo

n sau:

10nm iviH T N V T

loi

c bitv

loai

;07nm ivi

loi

2 v

loi

3.H

thng

ccu trcddngm

rng

tng cng

sutmkhngphi thaythh

thng

anghotng.H

thng

ngunxoaychiuc

bit

cquinh ring

tiMc

2.3.4

th

tip

nhn ngunin t nhiu hng khc nhau

(nguni

nl

i

,nguninl

i

2,myphtin...).

3.

Hthng

phnphiinphic

t it

k

lin

hot

th

thc hincpi

n,

ct

i

n

cc

ph

t i

theo

cc mc

u

tin

khngutin v c

bit

l

m rng

d dngkhicn tng p h

t i.

4. Phnphiin hthphiv a

c

tnhclp

li

v a

c

th

lin

kt

H

thng

c

th

c phn

o

n,

phn nhnh

hay

to

mchvng.

'*'

Nay

l

T po CV T

Vi t

Nam

12


15/94

5.

Phi

c ccphng nd phngm bo chovicng cu

khi

cs c.

6. Hthngphictrang bccthitbphng chng stlan

truyn

theongin

l

i.

7.Ngunincungcpcho ccthitb vi nthngtiu vo

trong

mitrng hp

phi l

TN-S(Nguninxoay

chiu

cdy

trungtnh v dy bo v ring

bit).

8. M ithitbin dng

trong

trm

vin

thng

phi

c

trang

b mt

thit

b bo v qu

ti

hoc ngn

m ch

ring, ph hp,

mbo an toncho thitb vnhnh.

- 9. H thng cp dn

c

lu n tron g ng,

mng

nha

hay ki m

loihoccu cping hngichungviccng dy thng

t n Trng hp

btbucphi

i

chungv i

ng dy thngtinth

phi

s

dng

cp c v bc

bng

k i mloiv

k h i

v cp

phi

c

ni

t.

10.

H thng

phi

c phn cp bo v ph hp

vi

mc

bovm bo ccchtiu kthutan tonin v an ton phng

chngchy n.

2 3 1

Phn ngu n cao

th

xoay

chiu

Phn caot

Nguncaoth

xo y

chiu c a T N V T loic bit phi

cnit

vngRingcao thc ainlc stihocctnht02

ng

cao thcpn chotrungtm kthut vi nthng.

Titrmcaothphi trangbbungcaoth trong c

cha

cc hthngt caothgm: m yctcaoth cct cu dao cao

th t olng,t bcoscp...Thchinccnhimvtipnhn

ngunin caotht

cchngcp

n

thc

hinccchcnng

olng,iukhi

n,bo v v phnphicho cc mybi n th.

13


16/94

H T N V T

loi

,

loi

2: khng btbuc thc hi ncc ni

dungn i tvngRingcaot h cainlcs

t i ,

khng cntrang

b

02

ng cao

th

2 y inth

T i

m i

trm bin th

c

th trang

b t

n 3 m y

bin th

ginghtnhau

c cng cng

sut,

mc

i

n

p, ki u

u

dy...

c

th

v n hnhsong song v inhau,cng sutca m ycch n

theohng dn

ti

phlcA.

H T N V T loi

c

bitp h i tr an g b tnht

02 my

bin th

cthht r chonhaukh i cn

thit

H T N V T

loi

, tr an g bOI m ybin th

H T N T V T

loi

2, ch t ra ng bOI m yb i n t h k h ingunin

c

cungcpbiinlcaphng khng m bo ccchtiu

k thut,

cng

sut ca tr m

khng qu 50 kV A.

H T N T V T loi

3 khng

tra ng b

my bin

th

3

Phn ngun h

th xo ychi u

Bu ngh th

Bunghth lni

tip

nhnccngunin ht h 220/380V

- 50Hz

tchcphn

p h i

v

cung

cp ch o cc ph

t i

ca

TVT/TTVT.

Bungh

t h phi

c b tr gn

t r m bin thhoc

trn

ng

itht h cam y bin thn ccph

ti

sao ch ong

cpcp

i

ntmybin th nph

ti

lngnnht.

T i

bungh

th:thc hi n

phn

p h i

ngun

utin khng u

tin;cc

ph

t iu tin

c

bit

c cp

i

n

th ng

t

y m

khngphiqua m t

mtrung giannokhc.Cc p h

ti

c cng

mcu tinthcn i

ti

cng m t t.

14


17/94

Thc h i nccphng n thngtrc/dphng; cthcp

i

n,

c t

i

n

bt

c

ph

ti

no.

2. hnphi

n

Thch i nphnp h i

i

n

trctip

v icc ph

ti

u tin bao

gm: phngngun,cc phngt

thit

bv i nthng,chiusng

cc phng

iuhnh oth,trcban, gia odch...

Thc h i nphnp h i

i

nhaicpv icc ph t ic mc u

tinthphn T im i ta nhtrongkh u kthut vi nthng thc

hintchnguncp chochiu sng bo chy cc thitbvn

phng ring;

thit

b

i

uha

b m n

c v cc

thit

b ph

tr

khc ring.

Cc

thit

b khng cn cp

i

nu tin c

th

c ni

trc

tipt phnp h iht h ngaysau m ybin th.

hitbchuy n i n

T h i t

b

chuyn

i

i

n

lm

nhim

v

chuyn

i

ngun

i

n,

viccpinch o phticthc hi n b ingunny hayngu n

khc n hthitb ny.

T h i t

bchuyn i

i

nphic cc tnhnng: gim st

i

n

p,

gim st dng

in,

gim st

t h tpha. T h i t

b ch

thc hin

chuyn

i k h i

ngun

i

nsdng

thoa

m n ccch tiu k

thut.

Nguyntcthc hi nchuynitngunA sang ngu nB

phi thc hin ct

ngunA

tr

c,ngngunB sau vngc

li .

T h i t

bchuyn iphi bom an tont u y tich o cc h

thng

ngun

i

n

t r o n g k h ithao

tcchuyn

i.

T h i t

bchuyn

iin

c

th

c

ttibung

h

t h hoc

bungmy ntuy

theo

v trgi accbunghth m yn,cc

m ybi n th.

15


18/94

2.3.3.Phn ngunxoay

hiu

d phng

Ngun d phnglmxpht n

M y phtin

trang

b ch otrm

v i n

thngphic cngin

p, tn

s

vi

l

i

in cp cho

trm

v i nthng.Cng

sut

ca m y

c

chntheohng dn

ti

phlcB.

M y pht

i

n c cngsut t2 0 k V A

t r

lnphidng m y 3

pha 220/380V, tn s 50Hz, tc

vngquay 1500 vng/pht.

Phn

ngcnphi lngc diezel

M y pht i

n c cngsut t2,2kVA trlnphic b n

nh

i

n p

t

ng A V R

(Automatic Voltage Regulator)

m

bo cht

lngin cho cc

thit

b hot

ng bnhthng.

i

vi

H T N V T loi

c

bit:trang

b my pht

i

ntheo

ch

1 1 1 ,

my pht

i

n d phng c

cngsut

thayth

chom t my khckh i cn

thit.

ivi

loi

,

loi

2,

loi

3.

trang

bOI my pht

i

nd phng.

Trongtrng hp khng ciuk i nlptmy phtin do kh

khn

vmt

bng

phi t

chc

ng cu

kp

thi

bng

my pht

i

n

lu ngkhinguninl

i

b ginonhoctrangb cctacquy

lu ngm bo an ton thng

tin

choi trmv i nthng.

a)Phng my:

M y phtinphic b tr mt phng ring cdin

tch,dung

tch c n

thit

theoyucu catng tm y, c kh

nng

m

rng

lp

tthm m ykhiphti tnghnmc d bo vm

boc ho

vic

vn hnh bo

dng,

s ach

a.

Phng

tmy b tr gntrmbinth hoccng

h

ngvi

ng

in

li

i votrm

v i n

thng

vic

unic k

thu tvk i n ht.

Phic btrchiu

sng

thnggi,thot

n h i t t t

m bo

myvnhnh

1 0 0 % cngsut.

6


19/94

Phictrangb cc hthngan ton phngchngchy n

theoquy

nh.

i vicc k hu vc c

nguy

cb

ngp

ltdo thint a i , cao

cabtmy nphicaohnmcnc

ngp

cghinhn

trongvng 10nm trctiv trtmy.Trongtrng hp khng

b tr

cphicbinphp

chngngp

lt

nh xy t

ng bao,

dngbm ncv.v...

b)Lpt:

M y

phi

c

lpt

trn

b,

trung

tm ca phng my;

Hng

ca m yphickthpvicciukinkhcnh:t

phn phi

i

n,tchuyniin (A TS -Automatic Transfer

Systems)

m bo anton,thuntinvnhnh bo

d

ng.

nguyntcthnggi,t otnhityucu lungkhngkhlm

mtphi

i vo

t

u my ->

phn

pht

i

n -

ng

c

n - kt

nclm mti

ra

ngoi -*

Altemator -* Enginer -* Radiator

-

),

m bo khng

to

thnh vng

tun

hon

ca

khng kh nng.

H

thng

ng x kh

thi

yu cu

ng knh

t i

thi u

phi

bng

ng knh ca nh snxutt itb,trng hpng ng

dihn quy nhphitng thm ng knh khng nhhng

t i

cngsut camy.

M y

phi

c

lp

tng t itk k

thut

ph hp

vi

hng

dn ca nh snxut. m bo cciukinvmi trng

rung,tingn, nhit

,nngC0

2

),khng gy

nhim

qu

mc cho php

i vi

xungquanh.

M yphicchyth ,kim trahiuch

nhv

c,

inm

bocc thng s kthuttrckhia vos dng.

c)Nguyntc tchcmy phtind phnglu ng:

Ngoi

nh

ng

my phtinclp

tticctrm vin

thng cn

trang

b m t s my d phnglu

ng,

slng m y

tuy thucslngtrm vinthngnv qunl.

T VINKHO

HC K

THUT

Bu

N 17

S0AY Y4?

PH

B N:


20/94

iv iH T N V T loicbit,loi 1:tl trangb l 1/10

ngh lnunv c strmvinthngtOIn 10trmth

c

trang

bmt myp tindphnglu

ng.

iviH T N V Tloi2: tltrang bl1/20.

i viH T N V Tloi3: tl1/25.

Cngsutcamy d phnglu ngc tnhbng120 %

cngsutphtiut nthit

yu

(cngsutu tinhn chn

mc cth)caloi

H T N V T . ham

kho phlcc

Mylu ngc

ttitrmvinthng trungtmcaa

bnthucnv qunlhocnhngvtrthunl inhtchovic

ngcu,xl s c.

2.Ngunxoay chiudphnglm tngu nth hai

(Ngun quc

giahay ngun

aphng

Thc

hin

theophng nthng

trc/d b ,

d

b 2.Khi

ngun

myp tin

d

phngng

v i

tr ngun

d

b

2.

2.3

.4.

Phn ngun

xoay hiu cbi t:

UPS

Inverter

H thng ngun

xoay chiu

c bitsdng UPS hoc

Inverter

c dng

cp ngun

xoay

chiu

lin

tc

cho cc

thit

bvin

thng, cng

ngh

thngtinkhng

b

ginon

khi

mtin

li

tngt.Hthngngun

xoaychiu

nyc

thit

ktheo

nhngnguyntcsau:

1.Trongcng mt hthngccPShocInverter phic

vn

hnh

song song v

ng

bvinhau.

2.S

lng

PShocInvertervnhnhthngtrctheoch

n+1.

3.Hthngnyphictrangbccthitbphnphi,bo

v,gimstva

r

cccnhboc nthit

4.UPSback upcthigianluinngnchdngchocc h

thngnh ,cp ngun cho ccthitbc yuc uthpnhccmy

chngdng,cc my

tnh...

khngquantr

ng.

18


21/94

5. Cc UPS hoc

Inverter

c cng

sut

t 2.000VA

tr

ln

phicpnguncho ph

ti

thng qua m t t phnphiin.M i

t itb ph

ti

nhn nguntmt

automat

ring c dngin bo

v

ph

hp. Tt

c cc

automat

u

c gim st

cht

h

trng

t ng ctvacnhbokp

thi.

2.3.4.1.Nguyntcxcnhdunglng cho UPS

cth

xc

nh

c cng

sut

ca UPS

cn trang b, thc

hin

theoccbcsau:

- D bo p h ti

theo giaio

n

tng

ng

vi

mc

quan

trngca

loi

ngunintrm vinthng:

loi

c

bit:

07nm;

loi1:

05

nm;loi

2 v

3:

03

nm.

2-Xc

nh

tng

cng

suttt

c cc ph

ti

cn

c bo v

p

s

=

p,

+ P

2

+

...ti

nmd bo

qui

nh cho

loi

ngunin

trm

vi n

thng.

3- Xc

nh

thi gian

UPS cn

phi

cp

i

n cho cc ph

ti

trnkhikhng cinl

i

(Backptimes).

4-Tinhtrng,chtlnginl

iti

nis

dng

(S lnmt

i

n,

thi

gian

mt

i

n,

kh

nng

cp

i

n

li

ca my pht

i

n

d

phng,thi

gian cnt it npyacquycaUPS...).

5- Xcnh cng

sut

h

thng

UPS:thngchnp = 1,5 P

s

6- Xc

nh h

d phng + 0 hay +

tnh ton s

l

ng

PScn trang b tuy thucyucu,

nhim

v m UPSs dng.

2.3.4.2.Nguyntcxcnhdunglngcah

thng

lnverter

1.

D bo ph

t itheo giaio

n

tng

ng

vi

mc

quan

trng

ca

loinguni

n

trm vin

thng:

loi

c

bit

v

loi

:

03

nm;

loi

2 v 3: khng cn

trang

b v thngthng khng c

cct itb

vin

thng

quantrng

dngngun220V C

tt i

cc

trm

ny.

19


22/94

2.

Xc

nh

tng

cng

suttt

c cc ph

ti

cn

c cp

i

n

u tin

c

bit(P

s

).

3. Xc

nh s

l

ng b

i

i

n

theo

cng

thc sau:

p

n= - ^ +

l

P

N

Trong:P

N

lcngsutdanhnhcamt biin

Dngincpcho h

thng

biinc tnhnhsau:

=54 A)

Tl

Trong:

ldng tiuth cah

thng

biin(A );

- P

s

lcngsutyucu cpcho phti(kVA );

- ulinp m tchiudanhnhcah

thng

(V );

-

l hiu sutca b

iin;

-

l

h

s

cng

sut ca

ph

ti th

ng

chn

0,8).

2.4.H thng cung cp

i

n m t

hiu

2 4

guyn tc

b n

Cc

thitb

vin

thngphnlnus

dng

ngunin m t

chiu m bo cpngunlintc,nnh vtincy.H

thng

cung

cp

i

n m t

chiu

c

t

chc

theo

nhngnguyn

tcc

bn sau:

. H

thng

ngunin m tchiucktni

b i:

m y nn

in,acquy,t phnphim tchiu cc thitb gim st,iu

khinv bo v;

th c hinnhim

vcungcpngun

i

n m t

chiuch o ccthitb

v i n

thng.

20


23/94

2.M y n nin,acquy,pht iphicn isongsong.Bnh

th

ngm y nninnhnnnglng t ngun xoay chiunn

thnh dng m tchiucungcpnguncho pht iv m tphnnp

cho acquy.K h ingunxoaychiub ginonacquyphngin

cung

cp ch o ph

t i

m bo lin

tct r o n g

m i

i

u

k i n .

3. C cdngc a h

thng

phicni

t r c tip

tit m

tip

t chnhbng m tsicp n g c t t dinph h p v i

T C N 68-141:1999 tiptcho cc cng trnhvi nthng yu cu

k

thut).

4. H

thng

m y nn

i

n

c tchc bicc

m-un

nn

hotngtheocchd phng n+1(d phngnng).K h idng

ti

mt chiuca m t h

thng

lnhn 50 0A phi

t r a n g

b h

thn g

my nninth hai phntiv nng c ao a n ton thitb

(khngthitk mt h

thng

m y n n ctngdng t im tchiu

l nhn500A .

4 H thng my n n n

1.

G m nhium-unnnin (Rectiier) v n hnhsong song

cpin cho ph ti .

2.Ccm-unn n v n hnhtheocchd phng (n+1)

3.M-unnnphicthc hintho,lpm t cch d dng;

thun

tin

ch o

v i c

thay

t h ,

m

rng,

nng cng

sut

ca

thit

b.

4. C in pura nnhsais c h o php < 1 % .

5.C kh

nng lmvic trctip

viph

ti

(khng c nacquy).

6.K h ingm m ctr ),cch b

n h i t

khilm

v i c

vi

acquy.

7. H

thng

n nintngngngcungcpin ch o ph ti

v

chu y n sang

c h

cung

cp

i

n ch o ph

ti

bng

acquy

khi

21


24/94

in

p

u vo nm ngoi

di

lm

v i c i

n p qu ca ohoc

quthp).

8. C kh

nng i

u

k h i n ,

gim st t

xa,

vn hnh lin

tc

cp

nguncho ph

ti.

9. Kim sotc cc gitrin

p,

dngin np choacquy

v cp cho ph

t i ,

a

ra

cccnhbo

cn thit kp thi.

10.

C h

thng

gim st

cht

h tnhtrng

hot

ng ca c

h thng

varacccnhbo c nthit;

d

un i ,hn h

n

mc cao

nht kh

nng

chmchp.

2.4.3.Nguyn

tc

xc

nhdung

ng cho h thng my nn

n

Dungl

ng ca h

thng

my nn

i

n

c xc

nh trn cc

s

c

sau:

. D bo dng

ti

danhnh

I

A

theogiai

ontngng vi

mc quan

tr ng

ca

loi

ngunin

trm

v i nthng:

loi

c

bitv

loi1:

07nm;

loi2:

05nm;

loi3:

03nm.

2.Xc nh dng

ti

lm

vic

c n c c a h thng n n

trng

thi vn hnh bnhthng

t i

nm

c u i giai

on d bo.Trong

iuk i n

vn hnh bnh

th

ng

i

n p ca h

thng

cao

hn i

n

p

danh

nh. Dn g

t i

lm

vic

mc

i

n p vn hnh bnh

thng

c tnh ton

nhsau:

w

B

Trong

:

-I

ldng

ti

lm vic mcin p

vn

hnh bnhthng;

-

I

A

l dng

tidanh

nh ng

v i

mc

i

n p

danh

nh c a

h thng (48

VDC) ;

- U

A

l

in pdanhnh

ca

h

thng;

22


25/94

u

u

l

i

n

p ca hthngtrongi

u

kinvn hnh bnh

thng(khong54V).

3. Dng nplichoacquyI

L

(RechargeCurrent).Dng

i

n

nyc xc

nh

nhsau:

Vi cc h

thng

my nn cch

giihn dng

i

nnp

cho acquy thdngnpctn bng gitr giihn.

Vi cc h

thng

khng cchcnnggiihndng

i

nnp,

dnginny cthchn bng0,1Cn0 4C ty

theo

yucuv

thi

gian

npl i.

4.Xc

nh

dng

ti

tngca hthng

= I

B

+ I

L

5. Lachnm unchun:lachnm un cdng mt

chiudanh

nh

bng

1/5n 1/8ca dngi

n

tng,l

nhng

m un thng

dngtrn

m ngc

thchuyn

i

d phng

lnnhau

gia

cc

trm.

6.Trncs cacc

ni

dungtrn:

=I

B

+I

L

xcnhdung

l

ng

ca h

thng

may nn cn

trang

b (c tnh

n

c

s d

phng n +

1);

chn

loi

vh

thng

mynnph

hp.

h

thng

hot

ngvibn

cao

ckhnngd phng,thngchn dung

l

ngdanhnhca h

thng

caohndung

l

ngtn ton 5 0 %.

4 4 Nguyn tct chc h th ng acquy

.Acquy l ngunnng

lng

d phngquantrng,cnhim

vcpinnnh lin

tc

cho cc phti

khi

khng cngun

i

n xoay

chiu

2.

Acquyc

s

dngng

trm

vi nthngphi

l

acquykh,

loiacquy cnhc

cht

lng

tt,ccp chng

ch

qucgia,

khu

vc ho c quc

t Tui

thcaacquyngiukintiuchun

phi

t t

12nm

tr

ln

viH T N V T

cbit,

H T N V T

loi

1;

10nmtr

lnviccloiH T N V Tloi 2, loi3.

23


26/94

3

Du ng lngacquyphiln cth cp

i

nch o ph

ti

t r o n g

thigian quinh c a

loi

H T N V T quy nh cthnh

sau:

H T N V T

c

bit,H T N V T

loi

,

H T N V T

loi

2

m bo

08-10 gi;H T N V T

loi

3m bo 04 - 06gi tuy theo cht

lng

ngun

i

n

l

i

(tn sutmti

n,

mc

khng n

nh

cain

p

v.v...)t ikhu vc

v

chtl

ng m y pht

i

n d phng.

4.Trongtrm

v i n

thng

acquy

phi

cchialm 2 nhnh,

ni

song songvinhau.Trongm i nhnhlp

t i

thiutacquy

v

t i

a khng qu 4

t .

Trongm itrng h pt nht phic OI

nhnh

c ni vo h thng.

5.

Thc

hin ni

song song

cc b

acquy

vi

nhau

trn nguyn

tc

phic cng

i

np,dung

lng,

cht

lng,

chng

loi.

6.Trongtrm

v i n

thngacquycthct

chung t r o n g

phngvicct itb

v i n

thng,

ng

tht

ti

phng ring

tuy

theoquy m catrm.Acquy phict ln gi vphi

cchinvi

t. Nhit m itrngxungquanhc du ytr t

5

n 5

c.

7.

Tr

ng hp

acquy

t

t i

phng

ring,

phng

t

acquy

phi

ctrang

b m y

i

u ha

nhit

, qutthnggi,h

thng

chiu

sng vtun

th

cc yu

cu

v an ton phngchng chy n.

8.

Acquy

tr

c

khia vo

sdng

phi

c np no v phng

th kim tra

dunglngb ng

ti

gi.

9.

Khidungl

ng

acquy

suy

gim

cn 7 5 %

dungl

ng

nh

mcphi thay

b ng

acquymi.

10.

Trong

m i

tr

ng h p

phi

m bo

st

p trn

m ch

cung

cpngunmtchiukhng cvtqu I V .

4 5 Nguyn

tc

xc

nh dung

ng cho h th ng acquy

1.

Xcnh dng phng c n c c a h

thng

acquy

ti

n m

c u i

ca

giaio

n d bo

tng

ng

vi

cc

loiH T N V T :

24


27/94

I B)

u

Trong :

I

E

l

dng phngca

acquy;

-

I

A

ldng

ti

danhnh

inpdanhnhcahthng;

-

U

A

linpdanhnhcah thng;

-U

E

linpcui cah thng.

2.Xcnhtngdunglngacquyca trm

Trncs

xc

nh

c dng phng caacquytin n nh

cdunglngacquycho trm.Dunglngacqy c

chn

phi

m

bothigian cpinph hpvi loiH T N V T(mc2.4.4.3).

3.Xcnhslng,chngloi acquys

dng

mbo an toncpinchotrm

vin

thng vthun tin

cho

vic

bo

d

ng.

Trong

trm

vin

thng

acquy

phi

c

chia

lm

02

nhnh

c

dunglng ging

nhau,

nhvydunglng

acquytim i nhnhs

bng

mt natngdunglng catrm.

Trnc

stri nkhai lpt

t it

b,

dunglng

ca trm theo tng

giaion(Phase,Phase2...)

chn

dunglng,chngloi,st

acquy

s

tr ng

b trn nguyntc t nhtOItvn iunhtkhng

qu 04

t.

HI.

N G U Y N

TC T CHC H THNG

T P

T

Th chinnitcngtc,nitbo v v nitchng st

theo quyphmTCN68-141:1999.

T TNG GIMc

P H

TNG

GIM

C

T r nM nhHn g

25


28/94

PhlcA

NG DN LA CHN CNG SUT

TR M IN PH TH

H thng cun? cp nguninli l thnh phn quan trng

ca h thng

thit

bingun

in,

bao gm

ng dy

tii

n v

trm

in

p (TBA)h

th.

Trong TBA h

th,

c lp my

in

p

(MBA), lmnhim v bin

i

i

n p ttrs cao

(IkV,

15kV,

22kV, 35kV) xungtrsthpch phhp vi yu cu s dng

(220/380V).Cn?sutca cc trmbin p (MBA) thngc

tnhra VA hoc kVA.

Ngnh vinthng khng s dngbin ptngthtrongcc

trm inp.

Trongh thngthitbingunin,h thnginlicn

phi c cngsut

ln

nht,

thamn mi yu cu dng

i

nca

trm vintlin.Mi TBA c th c mt haynhiu MBA nhng

trongmngvin thng hin

nay,

hu

ht

cctrmhip puch

c mt my in

th.

V

vy,

cngsutca TBAchnh

l

cngsut

ca MBA, ngthi ng hnhl ngsutcang dy chuyn

ti

innng Ph

lc

sltndnphng phpchn cngsut

MBA. T

d,

c th tham kho cho

vic

xc

nh cng sut

ch

nh ngloi hnhtrm cnhiuMBA.

Lu:

Trong k

thu t

i

nl

c,

cc

thu t

ng "Trm

in

p

v"Trm

binth " l

hon tontng

ng.

Trnht lachnm y

i n

c

l:

Xc

nh

cng

suttheotng

cng

sutt uth c a

ph

t i.

26


29/94

My bin pphic cngsut

S;

m b x

cung

cp

cho cc ph

tisauytron

trm

vinthng:

/

Cng

sut

pht i

t nS

ul

Cngsutphtiu tin v

l

ltngcngsutca nhngt it

bcn

phi

vn hnhtrongmi tnhhung bom

khai

thc

y

cc

dch

vvinthng v bao gm:

a)

Ccloit it

b:

vinthng

-

tin

hc;

nguninv ph

tr

ngun

i

n;camerabo

v;

bo chy/bo khi

n; in

vphotocopy

ca

khivnphng.

b)

Cc

loi

n

chiu

sng phng my phng lm

vic,

quy

giaodch,

n bo khng

ct anten, ct

caov.v...

:

-

Khi thng k phtica MBA th ch tnh

nhng

phti

ccpinnngtrctip

t

my bin

p,

khng tnhnhngt it

b nhn

nng

l

ng

t

sau

n

p,

my

nn,

PS

v phn

nng

l

ng

c thng k vo cng

sut

tiu

th

ca cct itbngun

trunggian.

- V ic thkhaithcvinthng, cnhngth ii

m

ton b

ph tictrongtrmvinthngungth isdnginnn

ngin,

khi

tnh

sut trmbin p ly

h sng

th i

caph

ti

b ng1.

2

Cng

sutcc

pht ikhc S

kh

.

L

tng

cng

sut

ca nhngphtiinkhc cn

l i ,

c nhu

cus dngin(phtikhng untin).

3

Cng

sut

ph t i

pht tri n

S

phlr

:

Cng

sut

phtiphttrinS

ph r

l

tng

cng

sut

cacc ph

ti

xut hintrongnmd bocuicng ca chu k d bo quy

nh

i vi

cc

loi

HTNVT

7


30/94

u

:Ph

ti

pht

trinphi

bao g m c ph

t iutin,

ph

t

khngu tin.

M y

bin

p v cc

t it

b trm

h

th

c

thi

hn s

dng

lu

di nn m ithh cthphcvtrongnhiunm, chonhiu th

ht itbvinthng.

Tuy

nhin,

vi tctng trngnhanhca

m ng

vinthng,

nhu cungunin

ngs

tng

nhanh.

Ring m y binprt

nng,

cng

knh

ihikhnggian

thi

cng,lpt phithong,

rng,

c

ly

an ton c ho cao

p...

nn

d

tr

cho pht

trin ,

ngoi cng

sut

cho my

bin p

cn d

tr

khng

gian lp

t

v

hnhlangan ton chongin caothdnntrmbin p. v

thi

giand bo ph

ti

cn d bo ch o 10nmvi

loi

c

bit

v

loi

1;07

nm

vi

loi

2 v

loi

3.

N h vy:Cngsutyu cuSv

T B A

m trm binpphicung

cp l:

SlTHA

Sv

,

k h c

s

ph

,

r

k V A )

c2:Chn cc thngs

c

bn catrmbinp:

Theo

tiu

chunVit

Nam, m ybinpinlccchto

theody cng sut

nh m c sau

y: 50, 100, 180, 320, 560,

1.000, 1.800,

3200,

5600k VA.

Da vo dytiuchun, chn mybinp c cngsut S

hlBA

th a mn 4

ki n:

-

Thoa mn

i

u

kin

m m y cho cc ph

ti

c dng

i

n m

m ylncatrmnh: m y iu hanhittpt r u n g ,thang my

h

thng

ngc iukhin

anten

vtinh kchthc

l n...

m

m y

ti

m i

thi

mtrongngyc hon ho m khng nh

h

ng

nchtlngincpcho ph tivinthng.

Theo

kinhnghim,cnchn:

28


31/94

(0,6-0,7)S

M B A

S

S M B A

(kVA)

- C

tr

s

trong

dy

t u

chun

k trn.

- hngthclmmt:lmngui tnhinbngdu.

-

i

n p

nh

mc:

+ Pha

scp phi

c cc mc

i

n p

(10,

15hoc22kV)

trnhphi thay inpmikhil

i

i

nthayi

i

np.

+ Phath cp:220/380V.

Nhng thng s khc,

quy

nh

trong

cc tiu

chun

chto.

29


32/94

PhlcB

NG

DN LA

CH N

M Y PHT

N

M y pht

i

n

M P ) ngy nay

phn

nglcchy u dng

ngc

n nn

th

ng

cgil m yn.M y

c

t r a n g

b

m bo an ton cpin cho cc

t it

bv i nthngkhikhng c

ngunin

l

i.

M P

cla

chn

trn

c

s cc thng s v

c

m

ca

ph

ti,nguni

n

l

i,

s

h

thng

nguni

ntrm

v i n

thng,

vaitr catrm

v i n

thng trnm ng,yu cu nhin

liu

s

dng...Trongphnny

ch

cpn

ni

dungxcnh cng

sut

ca t

m y

theo

cng

sut

phti .

Theo

quy

nh,M P

chcp

i

n ch o cc p h

tiv i n

thng,

gmnhngphtiu tin vm t s phti

t it

yu khc. Sovi

h

thng

cungcpinli,M P s ngsutnh hem m t

l

ng

bngcngsut canhngphtikhngcxp lo iu tin.

Trnht lachntmypht

n

c :Xcnh cngsut caph

ti .

1. Cng sut ph ti

u tin Sz

ul

:

Cngsutph tiu tin Si

i

ltngcngsutcanhngt it

b

cn

phi

vn hnh

t r o n g

m i tnh

hung

bo

m

k h a i

thc

y ccdchv

v i n

thng v bao gm:

a)Cc

lo i

t itb

v i n

thng-

t i n

hc;ngun

i

n v ph tr

ngunin;m y n nin, np,UPS,iu han h i t dng cho

phng m y , phng lmvic;m y tnhphcv gimst,iu hnh

30


33/94

tnh

cc;camera

bo

v;

cnhbo chy;

in

vphotocopycak h i

vn phng.

b)Cc loinchiusng cc phng my v i nthng,iu

hnh

o

th,trcban - bov, cabin

m

thoi,giao

dch

v cc

phng

qunl,

chcnng quy

giaodch;

bo khng

ct anten, ct

cao.

Ch

Khi

thng

k phtich tnhnhngphtitrc tip

nhnin

nng

tmy phtin.Nhngt itbnhn

nng

lng

t

n

p,

UPS

th

tnh cng

sut

s

dng

thct sau

n p

hoc

UPS

khng tnh cng

sut ca

n

p,

UPS.

2.Cngsutphtiphttri nS

ph r

:

Cngsutphtiphttri n phl tngcngsutca cc phti

xut hin

t r o n gnmc u icng

ca chu

k d bo quynh cho cc

loi

HT N VT Cng

sut

pht

tri n

ty

thuc

vo khnng pht

tri n

ca trm. Loicbit, loi1:10nm;loi2 vloi3:07nm

3.

Xc

nh b

sung

cngsut theoi

u

k i nm mycaphti.

Ph ti

ca

t

my pht

in

gm

nhiu

chng

loi

v

t it

b

khcnhau.Cnhngpht icngsut ln,c tnh m my rt

dc nh: myiuh n h i t cngsut ln,bm

nc,

thang

my,

c

cuquayantenkchthuc ln...

th

ng c dngin m

my

rt ln

so

vi

dng

in

m chng tiu

th kh i

t r n gthi

xc

lp.

V

vy, theo

i

u

k i n

ny, cng

sut

ca

t

my pht

i

n

cn philnm bo cho cc phtikhing an ton.

Kh icnhiupht ic dng m my ln, trs AS

m

c

tnhb ngcngsutm my ca phtilnnhtt r o n gcc pht i

trn.Nh

vy ta

c cng

sut

tnh ton ca my pht

in

nhsau:

SMPU

=

Sx., S

ph lr

AS

mm

31


34/94

:

L achncng

sut

my phtin

Qua phn tch trny

ta

cth chnmy c cngsut th a

mn cc

i

k i n

sau:

SMPII

Sl

+S

PH

.

1-

o

1-

y

o

Q

s

3

c

3

-

5

cu

J

s

55


58/94


59/94

Phl cB

NI DUNG CNG VIC

B O NGM Y P H T N

Mcchca

vic

bodng nhm duy tr cc ch tiu k

thut ca

m y phti

n,loitr

cc

trc trc

khngng

c,

hn h

h

hng

lunsnsngvnhnhcpinchoT V T kh i cn thit

N i

dung:

my pht

i

n chyubo

d

ng

theo

s

g i

vn

hnh,tuynhin myt ran g b chocctrm vinthngchhot

ng

c tnh d phng,

thigian

vn hnh

rt t.

m bo lun sn

sng vn hnh

cpi

ncho T V T

k h i

cnthitmy

phi

ckim

trabodngnh kv ichu k 6thng/ln.N i

dung

bodng

nh

k ngoinhng

n i

dungc

bn

nhtc

thkt

hp

v i

nhng

ni

dungbodngtheosg i vn hnh cathitb;nhngn i

dung

no

ti thi

bo

d

ng c

s g i sai lch

khng qu 1 0 %

v ilch

bodng

th thc hi n

lun.

Yu cu: vickim

tra,

bodngnh kphi tc l:

m bo my c

th vn

hnh n

nh,

an ton

trongthigian

mt

nm

v ithigian vn

hnh khng qu 200

gi.

A.

N i

dungcng

vic

bodng:

TT

Ni

dung

kim

t r a -

bo

d

ng

H thng bitrn

1

Kimtra,

x

l

s

rr

d u bi

trn

Kimt ra

m

c d u v

sch

c a d u bi

trn

3

Kimt rach thpsutdu tm

c 3~4Kg/cm2)

4

Thaydunht

5

Thay

lc

dunht

57


60/94

H thngnhin liu

6

Kim

tra,xls

r

rnhinliu,ng ng dn nhinliu

7

Thonc,x

cn

khibnh

cha

nhinliu

8

Kim

tra

h

thng

ng ng phnphinhinliu

9

Vsinhscraton b thng

cha

nhinliu

ro

Vsinhl

i

l c

ca

bnh

cha

nhinliu

11

Vsinh,bodngbmdu bmtay)

12

Kimtra,cnchnhl ibm nhinliu

(thpp,

cao

p)

13

Kimtra

psut

kim phun

nhin

liu,cnchnh kim phun

nhin

liu

3.Hth nglm mt

14

Kim

tra,

x

l

s

r

i

a

n

c

15 Kim

tra,b

xung

m bo mc v

sch ca

nc lm mt

16

Kim

tra,cng

chnh

licng

ca

dycuaroa

ca

qutlm mt

17

Kim

tra

hot

ng

ca

ng hnhitnc lm mt

18

Lm vsinhb mtinl

i tn

nhit,

qut

tn nhit

19

Lm

sch

h

thng

ng dnnc lm

mt,

xc s cn vsinhkt

nc,thayl cnc lm

mt,

bodng

van

honnhit

20

Bodngbm nc lm mt

4.H thng cung c p khngkh

21

Lm

sch

phin lckhng

kh(lc

gi)

22

Vsinhlm

sch

hthngng d n khng

kh cp

cho my

23

Bodng b np khngkh i

(Tubo

charger)vicc m y cng

sut

ln

5.

H thng

n

24

Kim

tramcnc v b

xung

ncct

cho acquy

25 o

kim

tra

t trng

dung dch

inphn

26 Vn

chtc

ni

v vsinhcc

u

cc ca

bnh

acquy

27 Cng

chnh

dycuaroa

ca

b np

acquy

(Dynamo)

28 Kim

tracc thit

b

o

in

p,

dngin,

tn s,

s

gimy

chy

29 Kimtra

hot

ng

ca

bsy,cc

thit

bi

u

khin,cm

bin

3

Kim

tra

hot

ng

ca h

thng

bt/t t

my, nt

dng

kh n

cp

58


61/94

31

Kimtra

dy

t p

t

bov,x

lt pxc

kim

tra

cchi

n

ca

cundy m y pht, hthngcpin,dy d n

32

V

sinh,

bo

d

ng

h

thng

khi

ng

(Enginer

starter

Systems)

Cc cngvi c khc

33 Kimtra tinhtrngkhing my vnkhihotng

34

Trng

thi cakhthi(mu sc cakhthi)

35

Kimtra,hiuchnh

khe h su-pp

(valveclearance)

36 Kimtra

p

lcbungt

37 B

sung,tradu,

m cho c

trcc a

my

38 Kim

tra,

vn

cht

cc

c, bu-long

c a my, ca ng

x,

v my

39 Vsinhng xkhthi

40

V

sinhschsphn

bn

trong

v v my pht

B.Phn cngvi c thayt ph tnglinh ki n:

-Thaylcdunhtchu k400gi

-Thaylcnhin

liu

ch u k600gi

-

Thay lc

kh ng kh

theo

h

ng

d n c a nh sn

xut

hoc

khng qulOOOgi

-

Thay

lc

n

c ch u k

OOOgi.

:

-N u m y pht

in

s

dng

lin

tc

trong

iu k i n

khng

khnhiu

bi

bn th d u

ng

c

lcdu v lilcgi c n

c

kim trathayththng xuynhn.

- M y phting m

nhiu

chng loiv cng

sut

khcnhau

do t h i

bo

dng

thayt h

cngkhcnh u

cnthc hi n

ph h pvim i hng, m i

loi

cngsutkhc

nhau.

59


62/94

o

p

o

o

o

co

o

>,

c-r

-ra

DI

c

OI

c

o

'to

OI

c

D

T3


63/94

c

x u

o

3

H

c


64/94

c

< D-

o

O)

c

-

-o

.

ro

c

.,

*6

r

E

l

>*

t

h

o

o

o

co en

o

o

r

=

o~

E

f>

c


65/94

'5

Q

o

c

H

co

z

Q

o

c

3-

T3

-

ca

g

/CO

>

t

o

ao

2

e

op

DO oa

c c

3

Q

Q

-

Q

3

ca

z

T

N

g

y

/

/

N

h

i

t

N

g

y

/

/

T

t

r

n

g

N

g

y

/

/

o "

N

g

y

/

/

N

h

i

t

N

g

y

/

/

T

t

r

n

g

N

g

y

/

/

N

g

y

/

/

N

h

i

t

N

g

y

/

/

T

t

r

n

g

N

g

y

/

/

N

g

y

/

/

N

h

i

t

N

g

y

/

/

T

t

r

n

g

N

g

y

/

/

c

t i Q.

*

N

g

y

1

co

>*

o

co h-

co

6


66/94

i

V

n

T

n

i

V

n

T

n

N

g

u

y

r

T

n

oi r i n

^

i

CN

C

N

i

t

h

c

h

i

G

n

X

cea

6


67/94

PHN

PH

L C

65


68/94

TIU

CHU N

N NH

TCN

68-141:

1999

(Trch)

3. Cc yu cu k thut

3.5.Yu cu

k thut mngt p tca

m t

trm vin thng

Mng

tip

tcamttrmvinthngphilmt hthng

tip

tduynht.

Trong

tr

ng hp sdnghthngtip

tc

lp,

phi thc

hin

thng nht

v

linkt

ng

th

h

thng

tip

t

clp.

3.5.1.Yucu k thut mngt p tcam ttrm vin thng

c

thc hinb i slin

kt

h th ngt p t

clp.

3.5.1.1.Yu

cu

chung:

Mng tiptcamttrmvinthng lin

kt

bicc h

thngtip

tclpcchcnng khcnhauc sdngtrong

nhngiukin

sau:

- Ct cao antencch nhtrmmtkhonglnhn 5m;

Nhtrm

c xy

dng

hthngtip

t

chng

st(thc

hintheohngmcxydng).

Mngtiptcatrmvinthngkhiphi thchincc

yucu sau:

1) Phi

c cc h

thng

tip

t

ingi t

thc

hincc

chc

nn

tip

tkhcnhau.

+Hthngtip

tchngstringchoctanten;

+

H

thng

tip

t

vin

thngthc

hinchcnn tip

t

cngtcv bov chot itb vinthng;

+

H

thngtip

t

chng

st chonhtrm.

66


69/94

2) Phi thc

h i n

linktcch

thng tip

tclp v i

nhauvthc

h i n

cnbnginth

t r o n g

nhtr m, gianhtr m

vct anten.

3.5.1.2.Y u c u k

t h u t

h

thng

t i p

t

v i n

thng.

Ttc cc

k h i

h

thng thit

b

t r o n g

m ttrm

v i n

thng

phicthc

h i n

nitbngm t h

thngtip

t

v i n

thng.

i

nt r

t i p

tca h

thng tip

t

v i n

thngphic gi

tr

n h

hnhoc

bnggi

tri

ntr

tip

tcng tc c a h thng

thit

b

chuyn

mch nm

t r o n gtrm v i n

thng

3 5 1 3 Y u

cu k

t h u t

h

thng

tip

tchngst c h o nhtrm.

Ttc cc nhtrm v i nthngcthc h i nchngstthuc

loicng trnh cp

li

theo20 T C N 46-84 c a ngnh X ydng.

3.5.1.4.

Y u cu k

t h u t

h

thng

tip

t

chng

st choct anten.

H

thng

tip

tchngst choct anten phi

c

t h i

cng

v tr

bao

quanh

chn

ct

v

phi

c gi

tr

i

n

tr

tip

t

n h

hn

gitrint r tiptyu c uthp nht.

3.5.1.5.T h ch i nlinktcch

thng

t i pt.

Cc h

thng

tip

t cchc

nng

clp

t r o n g

m t trm

v i n

thngphicthc

h i n

cnbnginth

t r o n g

nhtrmv

phnchnd

i

t.

1)Thc

h i n

cnbnginth

t r o n g

nht rm, gianhtr m

vct anten.

- K h i nhtrm

v i n

thng

cthc

h i n chng

sttheocc

cng trnh cpli,m itngc

t r a n g

b m tai sanbngin

th cai sanbngny ngc linktvinhauvtothnh

mtm nglinktchungc a nhtrm.

- Cc k h i h

thng

thitbt r o n gnh

trm

v i nthng

phi

c

n i

t

bng

m ng

lin

kt

hnh sao

hoc

m ng

lin

kt

m t

67


70/94

l

i.Ccmnglin

kt

ny

phi

c

n i vi

ai san

bng

in

th

t m i phng.

- V cp

ng

trc

(cp

anten

phi-

phi

c

ng

thi

n i

t

chngst

ca ct anten

v

t

v i nthng.

2)

Thch i ncnbngint h phnchnd

i

t.

Thch i ncn

bng

inth phnchnd

i

t

bng

cch lin

ktcch thngtip

t

cchcnng khcnhautron mt

trm

v i n

thng

theo

mttrongccphng php nhsau:

Phng php

Lin

kt

cch

thng

tip

t

c

chc

nng khc

nhau

trong

mt trm

vin

thngbng

l

i

sanbng

i

n

th L

i san

bng

i

n

th

l

l

i

k i mloichnd

i

t

c

thc

h i n

theo

trnh

t sau:

+

Din

tch mtbng

t hi

cng

li

sanbng

i

n

th

ty

thuc

vo

a

hnh

ca

cc h

thng

tip

t

nhng

phi

m bol

i

san

bngint h cch cch

thng

tip

t

khng

ln

hn 5m;

+ T h i cngl

i

san

bng

in

th

nn

thc

h i ncng thi

m

th i

cng cc h

thng

tip

t;

+

ot

trn

d i n

tch mtbngcn

thitvi

su

t

0,5

n

0,7m;

+ Trnmtbng

c

ot),t

dy

ng hay dy thp

mk m ng knh

t

3mm n 5mm hocnhng

di

ng hay

nhng

di st

c kchthc 15mm lmm hay

lOmm

2mm

to

thnh hnhl

i

c kchthc 30cm 30cmhoc50cm 50cm;

+

Phi

hn

tt

c cc m t

l

i

to

thnh mt

l

i

d n

i

n

lin

tc;

+ Thc

h i n

lin

kt

hn

n i )l

i

sanbng

vi

cc h

thng

tip

t

ti

nhng

v

tr

thch hp (dy d n lngn

nht,

khng

ln

hn 5 m)bngdyng

tr nvi

t tdin lnhnhocbng14mm

2

;

+ L p

t

nn

cht.

68


71/94

* pl

ng

php :

inktcch

thngtip

t

t r o n g

mttrm

v i n

thngbng

phng php

ni

trctip

Cch

thng tip

tc linktvinhau bngcpng

hoc

dingtrnc

t td i n

ln n

hoc bng

50mm

2

chnsu

d

i

mt

t

khong

t0,5

n0,7m.

Nul cpngnhiusith

ng

knhmtsikhngnh

hnmm.

*

hng

php3:

inktcch

thngtip

t

t r o n g

mttrm

v i n

thngbng

cchni

trc tip

cctm

tip

tvinhau hocthc

h i n

nicp

dntcacc h

thng

tiptclp vitmtiptchnhca

nhtrm.

3.5.2.

Yu cu k

thut

mng

t p

tcam t

trm vin thng

l

mth th ngt ptduynht.

3.5.2.1.

Yu

cuchung:

Mngtip

t

t imt

trm

v i n

thng l

mt h

thng

tip

t,

dng

chungcho ccchcnng khcnhau

c

sdng

vi

iu

k i nkhong

cchgi a

nh

trm

v i n

thng

vct

anten

nh hem

hoc bng15 m vkhiphi thch i ncc yucusau:

.Nh

trm

v i n

thngphi

xydngmi

hon ton

hocsa

l

theocuhnhsau:

- Phixydngmt mnglinktchung CBN)theonguyn

t c

dn

in

lintcn

mt

lng

Faraday.

-Mnglinktchungphicni

t i

h

thngtip

tduy

nht

ca

trm

v i nthngbngcch thng quatmtip

t

chnhv

cpdnt.

2.Cc

k h i

h

thng thit

b

t r o n g

nhtrm

v i n

thngphi

thc

hin

nitbngccmng

l nkt

Cbndngmnglinkt:

9


72/94

-M nglin

kt

mtl

i

(M-BN);

-M nglinktcchlymtl

i

(M-IB N);

-

M ng

lin

kt

cch

ly

hnh sao

S-IBN);

-M nglinkthnh sao S-BN).

Vic sdng

m ng

linkt

c qu y

nh

nhsau:

a

i vinhngtrm

v i n

thng cpquc

t,

lintnh, tnh,

thnhph,cc

k h i

h

thng

thit

b

t r o n g

nhtrm

cthc

hin

ni

tnh

sau:

-Khi thitk,thicng xydng nhngnhtrm mi,cc h

thngthit

b

t r o n g

nhtrm phicthc

h i n

ni

tchyu

bngm nglinktmt

l

i

(M-BN)nhu

t r o n gs

hnh 7.

Trongtrng h p cc h

thng thit

b

v i n

thng c yu c u

c bit

nh

dng d m t

chiu,

xoay chiu

t r o n g

m ng CBN

khngc

chy

vo

k h i

h

thng

thitb

v i n

thngth phi thc

h i n

ni

tbngm nglinktcchlymt

li

(M-IBN)vm ng

linktcchlyhnh sao S-IBN)

nh s

hnh 8 v hnh 9.

-ivinhngnhtrmang c

k h a i

thc,cc h

thng

thit

b

t r o n g

nh

trm phi

c

thc

h i n

ni

t

ti

thi u

bng

m nglinkthnh sao nhu

t r o n g

s hnh10.Nhngphick

hochb

sung,

sachaxydngthm c ho nhtrm

t r o n g

thi

giangnnhtthch i nn itcc h

thng

thitbbngm ng

linktmtli.

b)

i vi trm

v i n

thngcp

huyn,

bucc.

K hi

thit

k,thicng xy dng nh trm

v i n

thng cp

huyn,

bn

cc

c phn thnh 2

loi:

- Nhtrm

v i n

thngcp

huyn,bu

ccc quy m ln

thit

bchuynmch

t r o n g

nhtrmcdunglnglnhn 500

s ,

cc

hthng

thit

b

t r o n g

nhtrm

cthc

h i n

ni

tbngm ng

linktnhi vicctrm

v i n

thngquct,lintnh, tnh,

thnhph.

70


73/94

- Nhtrm vinthng cphuyn,bucc c quy m nh

thitbchuynmchtrongnhtrmcdung

l

ngnhhn 5

s),

cc hthng

thit

btrongnhtrmcthc hinnit

bng

m ng

l n

kt

hnhsao S-BN)nh s hnh 10.

3.5.2.2.M ngtip

t

ti

mttrmvinthnglmt hthngtip

tduynht phic gi

tr

intr

tip

tnhhn gi

tr

intr

tip

tcngtcnhnhtca

thit

btrongnhtrmvinthng.

3.5.2.3.

Yu cu kthu tca mtm nglin

ktchung

trongnh

trm

vin

thng.

M ng

linkt chung

phi

m bo cdng

nh

mt

lng

Faradayc tnh d n

i

nlintcbaoquanhton b nhtrm vin

thngnh s hnh 6.

V n g

kt

n i

v

Cc dy

lin

kt

hung

btn

t

thp

Hnh 6: M ng

lin

kt

chung CBN)

tron

nh

tr m

vi n

thng

71


74/94

1.Yu

cu

kthut

ca

mng

linkt

chung

i vinhtrm

mihon ton.

a)

Xy

dng

ng dn

ktni:

-Tim itngca nhtrmv i nthng xydngm t vngkt

n ikhp knquanh

sn nh

hocxungquanhtng nh. i vi

tng cth thch i n

d

i

nn nh

su

0,5m

n 0 7m. Vng

ni

cthc

h i n

bngcp

ng bc ch

hoc

nhngdi

ng

c

t t

dintithiukhng

nh

hn 50mm

2

hocbngthp

m

km

t t

d i n

t i

thiukhng nh hnlOOmm

2

;

Thchinlinktccvngkt

ni

ca m itngbng

cc

dy linkt

thng

ng,

khong

cchgia

cc dy

thng

ng

khnglnhn 5m. Dylinkt

thng

ng

l

thanhnghoc

thp

m

km

t t

dinkhng nh hn50mm

2

;

Xydngt ml

i

trn ton

b

nn nhtrm

sut

0,5

n 0 7mbngthp trnhocd

t

m

km

t t

d i nkhng nh

hn

50mm

2

vikch

th

c m i mtl

i

khngln

hn

5000mm

5000mm(phithch i nhnt tc ccimgiaonhauca i);

- Thc

h i n

hn

ni

t m

l

i

vi

vng

ktni

xung

quanh

sn

nhhocxungquanh

t

ng.

b)Thc

hinlin

kt

khung

btngct

t p

caktc unhtrm.

-

Trongtr

ng hp s d ng

khung

b tngctthp

lm dy

dnst thphi thch i n

hn

ton

b

khung

b

tngctthp ca

c unhtrm

t i

cci

m

nivgiao

nhau;

-Thch i nhnnivngktnim itng vim t simca

khung

b tng

ct

thp.

c)Thch i n

u

ning

dn

ktn i vi

cc

thnhphn

kim

loit r o n g

nhtrm

nh:

Vidy d nst canhtrm;

-Vi

khung

b tngctthpcaktc unhtrm;

72


75/94

-Vikhunggi

cpnhptrm;

-

Vicc

ng dn

n

c,

cc ng

dn

cp

bng

kimloi.

2.Yucuk

thut

ca mnglinktchung

CBN)

i vi

nhtrm

vin

thng csn.

a)

Xy

dngng dnktni:

-Timitng ca

nh

trmvinthng

xy

dng

mt

vngkt

nikhpkn

xung

quanhtng nh. Vngktnicthc

hin

bng

cp

ng

bc ch

hocnhngding

ct t

din t ithiu

khng

nh

hn 50mm

2

hocthp

mkm t t

din tithiu

khng nh

hnlOOmm

2

b Thchinunivngktnivi

cc

thnhphnk i m

loi

trong

nhtrmnh:

-Vittc

cc dy dn

st ca

nh

trm

v

tngphnkhung

b tngct

thp,

vi

mt

s

dmb

tng

c

ththmnhpc;

-Vikhunggi

cpnhptrm;

- Vi cc ng dn

n

c,

cc

ng dn

cp

bng

kim

loi.

3.5.2.4.Yucuk

thut

catmtiptchnh

Minhtrm

vinthng

ctrang

b mt

tm

tip

t

chnh.

T m

tiptchnhphibomnhng

yu

cu sau:

1)tgn

nguncung

cpxoaychiuv

cc

ngvo ca

cpvinthng (cng gn cng

tt).

2) Ni

trc

tipticc b

phn

sau:

-

Mngtip

t canhtrmvinthngquang cpdnt;

-n g dn bov;

-

Vkim loicatt

c

cp

nhp

trm;

-MngCBN;

-

Cc

dngngunmtchiu

Ninmy

o

khithchin

o

th ).

73


76/94

3

Quy

cch,

kch

thc

ca tm

tip

tchnh.

-Tmtiptchnhphic lm

bng

ngmniken.

-

Ton b

bulon,

ecu,vng

m

dng

ktcui

cp

phi

bng

ngmniken.

-

Tm

tipt

chnhthngc kch

thcsau:

700mm

120mm

lOmm

hoc 500mm 120mm lOmm

hoc 300mm

120mm

lOmm

hoc 200mm 120mm lOmm

3.5.2.5.

Yu

cu

k

thut ca

cp

(dy) dnt

Cp(dy) dnt phi thoamnccyucu sau:

- hiudi

cp

(dy) dnt

cngngncng

t t,

thngthng

l nhhn50m;

Trong

trng hpc

bit

c

th

cho phptng

chiu

di p

dn t

nhng

phimbo

i

ntrmtchiucacpdnt

phi nh

hnhocbng

0,01 .

-

itdin ca

cp dn

t

ph

thuc

vo

tng

dng

i

nmt

chiucaccthitb trongnhtrm vinthng v khngcnh

hn

lOOmm

2

3.5.2.6.Yucukthutmnglinktmt

li

(M-BN)

Mng

linktm t

li

(M-BN)cxy

dng

theo

nhng

yu

cu sau:

a)

Xydng

tm

mmt

li.

-Xy

dng

mt tmm m t

li

ckchthcln

cha

ngc ccthit

b

v

gi

cpnm

trong khi

hthng

M-BNvc

tdisnthitb.

-Tmm

clm

bng

dy(di)

ngtr n

hocbng

dy

(di)t pm m t tdin lnhn 1 4m m

2

hn thnhli.

74


77/94

Kch thc mtlithngnm

trong

phmvi :

30cm

X

30cm;

40cmX40cm;

50cmX50cm.

b)Thc

hin

ni (hn)tmm mtli vimngCBNti

n iuim (cng

n iu

imni vimng

CBN

cng

tt)

bngdi

ngtrnhocthpm m

t t

dinlnhn14mm

2

c

Thc

hin

ni

phn

dn

ca

khi

h

thng

thit

b

vi n

thngvitmmmtli.

-

hit

bvi nthngvinhngmchintccungcp

chungm tlpbc ki mloito ramtbngin

t

chunph

khptrn mt cc

bng

mch in.Ttc cc mt

bng

in

t

chunc nivinhaung

thi

c nivikhunggithitb

hocviv ki mloica hthngcp ln c n (nm

trong kh i

M-

BN)

bng nhng

dy

ng c

t t

din

ln

hn

14mm

2

-Thc

hin

nicc

cabinet,

cckhunggithitb,vkim loi

cpvi

tm

m mt

libng

dy

(di)ngtheo

ng

ngn

nht

c kch

th

c

nh

tron

bng

11.

Bngli:Quynh kcht cca dyniccthnhphn kim

lo ica

cp,h

thngt it

b vitm

m

m t

li

T T T ndyn i

it

din

ti

thiu, mm

2

1

D y

niv kimlo i

c a

cp

thu

bao

(chn)

14

2 Dy niv kimlo ic acpthubao

(treo)

14

3 D y ni ccb bo vthubaotrn gi phi

tuyn

MD F

4

4

D yningun acquy

100-^300

5

D y ni phnkimlo ikhunggi b n n

14

6

D y ni phn khunggi bi n

14

75


78/94

T T

T n d y ni

t

di n

ti

thiu, mm

2

7 Dy

ni

cc

phn

kim

loi

khung

gi

tng

i 14

8

D y ni ccphnkim

loikhung

gi phi tuyn

14

9

Dyn icc gi

cp

14

3.5.2.7.Yu

cu

k

thutm ng

lin

kt

cch

ly

mtl

i

(M - IB N)

M nglin

kt

cch

ly

mtl

i

(M-

IBN)

c xy

dng

theo

nhngyu

cu sau:

1)

Xy

dng

tmm mtl

i

cch l y hon ton

vi

CBN

xungquanh.Tm

m c kch

th

c

ln

cha

ng

c cc

t it

b v cc gi

cp n m

trong kh i

h thng M-IB N.

- Tm

li

m

c lm bngdy

(di)

ng

hoc

bng

nhngdy

(d i)st

mkm t tdin ph i

ln

hn

4mm

2

;

- Ccmtl

i

ph ihn

vinhau.

- Kchthc mtl

i

cng nh cngtt,n nmtrongphmvi:

30cm

X

30cm;

40cm

X

40cm;

50cm

X

50cm.

2)

Thc

hinn ikhung

gi

cp,khung

gi

t it

b

vi

tmm mtl

i.

Cc

khung

gi

cp,

cc

khung

v gi ca

t it

b n m

t r o n gk h i

h

thng

M-IBN

ph i

c

n i vi

tm

m mt

liti

nhiu

i

mbngdy

ni

c kch

th

c

nhtron

bng11.

3)

Thch i nu

ni

m nglin

kt

cch

ly

mtl

i

(M-IB N)

vim ng

lin

ktchung

CBN).

-Thchinu

n i

m ngM-IBN

vi

m ngC BN ph ic

thchin trong

phm

v ii

m

ni

n SPC);

76


79/94

-i

mni

on SPC) phi t

vng

ln

cn ca khi

h

thng

M-IBN.

imnin

tron

trng hp nyl d ing dctheocnh

catmmmt

li

c kchthc2000mmX 20mm X 2mm.Di

ng

c hn

vi

cnhtm

m

mt

li.

-

Thc

hin n i

ccng

ktn i ca

mng

CBN tiSPC

bng

dyng c

t t

din lnhn14mm

2

.

3.5.2.8.

Yu

cu

k

thut

mngl n

k t

cch

l y

hnh

sao S-

IBN )

Mnglinktcch lyhnh sao S-IBN)cxydngtheo

nhng

yucu sau:

1)

Thc

hin

lin

kt

ccthnhphnk i mloica

k h ih

thngS-IBN.

- Cc gi cptrong kh ihthngS-IBNcni vinhau

vni viCBN tithanhdnn in SPCB)bngdyn ic

t t

din ln

hem 14mm

2

(bng

cp

nhiusi

c v

bc);

- Cccabin,khunggithitb trong kh ih

thng

S-IBN cch

hon ton

viCBN;

chngc

ni vi

nhauv

ni viCBN

ti

thanhdnnin

bng

dyn ict tdin lnhn14mm

2

(bng

cp

nhiusi

c v

bc).

2)Thchinun imnglinktcchl yhnh sao S-IBN)

vimng

l nk t

chung CBN)tithanhdn

n i

n SPCB).

- Thanhdnnin lm tthanhngckchthctrong

phm

vi sau: chiu

dikhng

lnhn2000mm chiu

r ng

t 50

n

lOOmm b dykhng nhhn

3mm

v c gn

cht

vo m t

v tr

thch hp

chiu

di

ca

dy

l nk t l

nh

nht.

3) K h i thc hin

lin

kt

mngS-IBN

phi thc hin

kim

tra

bo

dngthng xuyn

m

bo

s

cch

ly tuyti.

77


80/94

QIN 68

59

997

Cc

ta h

Tng l

Vng n t

TngD

Khihe thng

Thiib M-BN

H

Ct

(bp

hit

bM-BN

Pase!cp

ngon48 Vde

KhungKhicib

u g u i i ne

Da y

dan

v

DO

Ctthp linkt

CSp

Di

b

C ptrong

h

Lhng c che chn

Dy dn b

D

i

a

in

c c

t

i

n tthpmog/v lin t

Hnh 7: Mng

linkt

m t

i

(M-BN) trongnhtrm vi n thng

78


81/94

C c k h u n g g i c a

k h i

h t h n g 1

c

n i

b n g t m m m t l

i

T m d m m t li

c h l y

g i a

t m m m t

li

v

C B N n g n d n g n g o i

lai

K h i

h t h n g 2

Ca s

ktni

m t

m

.. Dy dan linkt

ng

th

Ct

thp lin

kt

pnhphoccpn ib khng chechn

Cpnhp

hoc

cp

n i

b c che

chn

..)

Cc chm dctheo

cnh

tm

m mt

l

i

bi u th

SPC

ca

n

Cp

ni

b hthngivokhihthngph ist

SP

Hnh

8:

Mnglin t h ym t i(M-IBN)

trongnhtrm vi n thng

7 9


82/94

5

ThitbBNmtli(cth

cch

SPCBnhiu

hn tng)

IBN(khngv dy

dn v +48V

tuyn

thit

b

mtli)

* i dyxoarTklTng chndn

n

thitbnhpcp

hanh

d n +48V DC

cch

ly

Khung gi b

ngunchnh

v

.__ Ct thp linktv thp xy dng

_____ Dy dn lin

kt

. Dy

dn +48V DC (khng

v dy 48Vi song song

Cpnhptrmhoccpnib hthng

FGB Thanht tng {mtphncaCBN)

q p p R _ ' ,

o r v u Thanhd an linkt

dn i

m

SPCW C as l nkt

n i

m

Hnh9:M ng Hnkt hlyhnhs o(S-BN) trongnhtrm vi n thng

80


83/94

ng l p

Jil

Ci thp lin

ktv thp

xy

dng

D y d n linkt

SG Thanh

t p

hnh sao

Hnh1 :M nglin

kt

hnh

s o

S-BN) trongn trm vi n thng

S


84/94

3.5.2.9.Yu cu k

thutmng

lin

kt

hnh sao S-BN).

Mn

linkthnh sao S-BN)c xydngtheonhngyu

cu sau:

) Ti

m i

tng

c a nh

trm phit

mt

hocnhiu

tm

tip

thnhsao,dynicc

khung

gi

t it

b,gi cptitm

tip

thnhsaokhng

cln

hn 2,5m.

2

Tm

tipt

hnh sao

l

mt tmng m

niken

vc

bt

chtvo mt

v tr

thch hp

vi

kchthc:

200mm

50mm

3mm

hoc

400mm

lOOmm

3mm.

3)Dy ni cckhunggi m y, gi

cpvitmtipthnh

saobngcpngnhiusic t tdinkhng nh hn14mm

2

~4

Thc

hin nicc tm tip

thnh saovimngCBN bng

cp

ngnhiusic

t t

din t

38mm

2

n50mm

2

6

ucu k thutipt nl ctrongcc nhtrm vi n thng.

3.6.1.

Cc

t it

btrongnhtrm vinthngccungcpint

trmbin thh p ring ltt nht.

i vicc nhtrm vin

thng cpquct,lint nh, t nh,thnh phphiccungcp

ngun

xoaychiut trmbin thhp ring.

3.6.2.

Cctrmhthring

cung

cp

ngun

ch o cct itbtrong

nh

trm vin

thng

phi

c

thc hin tip

t

trung

tnh

theo

ng qu yphm ca ngnhinlcTCVN

4756-89.

Hthng

tip

tny cng xamngtiptcatrm vinthng cng

tt.

Khong

cch

ti

thi ul30m.

3.6.3.

Trong

nh

trm vin

thng h

thng

ngun

xoay

chiuphi

dngloi

mng

TN-S.

Trongnh

trm

khng c

imnichung

dy bo v PE v

dytrungtnh N.

Trongnh

trm

hthng

i

nba pha

phi

l hthngn m dy

LL

2

,LJ,N,PE).

82


85/94

Trong

:

L,

L

2

,L

l

cc dy

pha;

N

l

dytrung

tnh;

PE l

dy

dn bo

v

Dy dn bovPEcnititmtip

tchnh.

3.6.4.

Binphpthchin:m botrongnh

trm

vi nthng

ngun cung

cp

xoay

chiulun lun l hthngba phan m dy

TN-S)

m ngphn

phi

ngun cung cpcho nhtrm

vi n

thngs

dngmttrongccphng php uni

sau:

1)Num ngphn

phi

ngun xoay

chiu

C) bn ngoi l

loim ng

TN-S th mch

cung

cp

ngun xoay

chiu C)trong

nhtrmcu

ni

nh s hnhLa:

- Dy dn bo v(PE)

phi

c nititmtip

t

chnh;

- Dytrungtnh

(N)

khngcni

ti

tm

tip

tchnh.

Ch :

Kiu

lkiubt bucn uto nhs dngmtbinp cchly

v do

vy

hthngTN-S k h idu

t i

vng

ti

cabinp.

n

La: hng php u

ni

mng cung cp

n

xoay

chiuchotrm vi n thng

Mng phnphingu n bnngoil

mng TN-S

83


86/94

Hthng n

bn

trong(TN-S)

ng

v D

Dy dn vng

c

M ng

t p

t

H

thng

n

bn ngoi(TN-C)

Hnh

l.b:

hng php u

ni

mng cungc p

nxoaychiu

cho trm

vi n thng-

Mn? phn

phi

ngu n

bn

ngoi

lloi

mng

TN-C

ng

v D

Dy dn vng

M ng

t p

t

Hthng nbnngoi

TIhocTT)

Hnh le: hng php

unimng cungc p

nxoaychiu

cho trmvi n thng-Mng phn phi ngu nbnngoilloi

47_nguyen tac to chuc he thong nguon dien tram vien thong_small

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