Tram bien ap dieu khien tu xa-Dang Xuan Quang-12180119.pdf

I HC QUC GIA THNH PH H CH MINH

TRNG I HC BCH KHOA

KHOA IN - IN T

-----o0o-----

TIU LUN MN HC SCADA

TRM BIN P IU KHIN T XA V

THIT B IN T THNG MINH

GVHD: PGS. TS. NGUYN HONG VIT

HVTH: NG XUN QUANG

MSHV: 12180119

TP. H CH MINH, 5/2014

TP HCMBK

Trm bin p iu khin t xa v Thit b in t thng minh

1

Ni dung

1. Gii thiu chung ....................................................................................................... 3

1.1 Trm bin p ...................................................................................................... 3

1.2 Phn loi trm bin p ....................................................................................... 3

1.3 Phn cp qun l li in ................................................................................. 4

2. Trm bin p iu khin t xa v Thit b in t thng minh ................................ 5

2.1 Trm bin p iu khin t xa ........................................................................... 5

2.2 Quy nh ca EVN Xy dng v qun l vn hnh thit b scada ca trm

bin p v nh my in ................................................................................................ 7

2.2.1 Giao thc truyn tin ............................................................................................ 7

2.2.2 Cng kt ni d liu ........................................................................................... 7

2.2.3 Danh sch d liu ............................................................................................... 7

2.2.4 iu khin thit b .............................................................................................. 8

2.2.5 Thit lp ch iu khin t xa ....................................................................... 8

2.3 Thit b u cui v thit b iu khin lp trnh c ...................................... 8

2.3.1 Thit b u cui (RTU) ..................................................................................... 8

2.3.2 Thit b iu khin lp trnh c (PLC) ........................................................... 9

2.3.3 So snh gia RTU v PLC ............................................................................... 10

2.4 Thit b in t thng minh (IED) ................................................................... 10

2.4.1 nh ngha ........................................................................................................ 10

2.4.2 Cc chc nng ca mt IED ............................................................................. 12

2.4.2.1 Bo v ............................................................................................................... 12

2.4.2.2 iu khin ........................................................................................................ 13

2.4.2.3 Gim st ............................................................................................................ 13

2.4.2.4 o lng ........................................................................................................... 13

2.4.2.5 Giao tip ........................................................................................................... 14

3. H thng SCADA ca mt s trm ti Vit Nam................................................... 14

3.1 H thng SCADA trm bin p 110kV Vinacraft ........................................... 14

3.1.1 Tng quan ......................................................................................................... 14

3.1.1.1 c im cng trnh v tnh cn thit ca h thng SCADA .......................... 14

3.1.1.2 H thng SCADA ca Trung tm iu HT min Nam A2 .................. 15

3.1.2 Gii php cng ngh ......................................................................................... 15


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3.1.2.1 Cc tiu ch chn la m hnh RTU ................................................................. 15

3.1.2.2 Gii php k thut ghp ni h thng SCADA trm 110kV Vinakraft vo

h thng SCADA ........................................................................................................... 15

3.1.3 Cu hnh v c tnh k thut h thng SCADA ............................................. 18

3.1.3.1 Thit b RTU .................................................................................................... 18

3.1.3.2 Transducer a chc nng lp trnh c .......................................................... 19

3.1.3.3 Transducer ch th v tr nc my bin p ......................................................... 19

3.2 H thng SCADA trm bin p AMATA 1 v 2 ............................................. 20

3.2.1 Tng quan ......................................................................................................... 20

3.2.1.1 Ti TBA Amata 2 ............................................................................................. 20

3.2.1.2 Ti TBA Amata 1 ............................................................................................. 21

3.2.2 Thit b trung tm SCD5200 ............................................................................ 21

3.2.2.1 Ti TBA Amata 2 ............................................................................................. 22

3.2.2.2 Ti TBA Amata 1 ............................................................................................. 22

3.2.3 Transducer a nng HC6600 ............................................................................ 23

3.2.3.1 Ti TBA Amata 2 ............................................................................................. 23

3.2.3.2 Ti TBA Amata 1 ............................................................................................. 23

3.2.4 TAP POSITION Transducer M100 .................................................................. 23

3.2.5 Modem quang 4xE1+4xETH Fiber Multiplexer .............................................. 24

3.2.6 Ethernet Media Converter ................................................................................ 24

3.2.7 Serial2Fiber Converter ..................................................................................... 24

3.3 H thng SCADA ti trm 110kV Th Ngh ................................................... 24

3.4 H thng SCADA trm 500kV Sng My ...................................................... 25

4. Kt lun ................................................................................................................... 26

5. Ti liu tham kho .................................................................................................. 26


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1. Gii thiu chung

1.1 Trm bin p

Trm bin p l mt phn ca th h thng in gm ngun pht, truyn ti v phn

phi. Trm bin p bin i in p t cao n thp, hoc ngc li, hoc thc hin

mt s chc nng quan trng khc. Gia ngun v ph ti, nng lng in c th

truyn qua nhiu trm bin p cc cp in p khc nhau.

Hnh 1 Trm bin p trong h thng in

1.2 Phn loi trm bin p

Trm bin p c phn thnh cc loi in hnh sau:

Trm truyn ti: Mt trm truyn ti c th kt ni hai hay nhiu ng dy vi

nhau. Cc trm truyn ti c th t n gin n phc tp vi cc mc cng

sut khc nhau. Vit Nam, cc trm 500kV v 200kV c xem l cc trm

truyn ti.

Trm phn phi: Trm bin p phn phi chuyn nng lng t h thng truyn

ti cp cho h thng phn phi ca cc khu vc. Vit Nam, cc trm 110kV

l cc trm phn phi.

Trm gp: Khi c cc my pht phn b nh cc trang tri gi, trm gp c th

c yu cu. Trm gp tp hp nng lng t cc my pht nh v a ln

li.

Trm chnh lu: Trm chnh lu c s dng trong h thng in HVDC hoc

dng kt ni cc mng khng c cng tn s. Cc trm ny c cc thit b


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in t cng sut thay i tn s dng in hoc bin i t in xoay chiu

sang mt chiu hoc ngc li.

Trm ng ct: Trm bin p khng c my bin p v hot ng ch mt cp

in p, cc trm ny thng c dng kt ni cc ng dy vi nhau.

1.3 Phn cp qun l li in

H thng qun l li in l h thng iu khin c phn lm nhiu cp. Mc cao

nht, v d Trung tm iu quc gia qun l ton b h thng; mc iu trc

thuc v d nh Trung tm iu min qun l mt s khu vc. Mc iu khin

thp nht l trm bin p.

Hnh 2 Phn cp qun l li in ca cc nc trn th gii

Ti mi cp khc nhau, cc nhim v v chc nng khc nhau s c thc hin, tt c

chc nng c thc hin trong trm bin p c gi l cc chc nng ti ch v tt

c cc chc nng thc hin ti cp iu khin cao hn c gi l cc chc nng t xa.

Hin nay, t chc iu h thng in Vit Nam c chia thnh 3 cp, chc nng

nhim v tng cp c m t chi tit trong Quy trnh iu h thng in quc gia

ban hnh theo quyt nh s 56/QBCN ngy 26/11/2001, bao gm:

Cp iu HT quc gia (A0): chu trch nhim iu hnh li in 500kV,

m bo cung cp in cht lng, an ton v kinh t. Phm vi iu hnh: gi

quyn iu khin li in 500kV, cc nh my in cng sut ln hn 30MW;

Cp iu HT min (A1, A2, A3) chu trch nhim iu hnh li in

110-220kV ca tng min, m bo cung cp in cht lng, an ton v kinh


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t, tun theo s ch huy ca iu A0. Phm vi iu hnh: gi quyn iu

khin li in 220kV (mt s trc chnh 110kV), quyn kim tra li in

110kV.

Cp iu li in phn phi thuc cc Cng ty in lc: l cc Phng

iu ti cc in lc tnh/thnh ph chu trch nhim iu hnh li in

phn phi gm cc TBA v mt s ng dy 110kV. Phm vi iu hnh: gi

quyn iu khin li in 110kV (tr mt s ng dy trc chnh), cc nh

my in cng sut nh hn 30MW; quyn kim tra li in n 35kV.

Hnh 3 Phn cp qun l h thng in ti Vit Nam

2. Trm bin p iu khin t xa v Thit b in t thng minh

2.1 Trm bin p iu khin t xa

Trm bin p iu khin t xa l trm bin p c th c iu khin, gim st v thu

thp cc d liu ca trm t trung tm iu khin xa. thc hin c cc chc

nng t xa, trm c kt ni vi trung tm iu khin, h thng iu thng qua h

thng SCADA. in hnh ca mt h thng SCADA ca trm nh sau:


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Hnh 4 in hnh h thng SCADA ca trm bin p

Theo tiu chun IEC 61850, cc thit b nh th ca TBA c sp xp theo 3 mc:

mc trm (Station Level), mc ngn l (Bay Level) v mc x l (Process Level).

Hnh 5 Phn cp cc thit b trm bin p


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Thit b mc trm bao gm my tnh vi mt c s d liu, ni lm vic ca nhn vin

vn hnh, giao din giao tip t xa,

Thit b mc ngn l bao gm cc thit b iu khin, bo v v gim st mi ngn l.

Thit b mc x l bao gm cc I/O, cm bin thng minh v b tc ng.

Cc chc nng mc trm c hai loi:

Cc chc nng x l d liu t cc ngn l hoc c s d liu cp trm. Cc

chc nng ny c s dng gi cc lnh iu khin cho cc thit b nht

th (my ct) v thu thp d liu trm bin p nh in p, dng in, h s

cng sut,t cc thit b mc ngn l.

Cc chc nng giao din cho php nhn vin vn hnh c th thao tc iu

khin, gim st, cho php giao tip n mt trung tm iu khin t xa TCI

(Giao din iu khin t xa) hoc n trung tm gim st t xa gim st v

bo tr TMI (Giao din gim st t xa).

Cc chc nng mc ngn l thu thp d liu t ngn l v truyn lnh n thit b s

cp (mch ng lc) ca ngn.

Chc nng mc x l trch xut cc thng tin t cc cm bin/ u d trong trm bin

p v gi n thit b mc trn, mc ngn l. Nhim v quan trng khc ca mc x

l l nhn lnh iu khin t cp mc ngn l v thi hnh.

2.2 Quy nh ca EVN Xy dng v qun l vn hnh thit b scada ca trm

bin p v nh my in

EVN c quyt nh s 1208/Q-EVN ngy 28/7/2008 v vic ban hnh Quy nh

xy dng v qun l vn hnh thit b SCADA ca trm bin p v nh my in vi

mt s ni dung lin quan cn lu nh sau:

2.2.1 Giao thc truyn tin

Thng tin t RTU hay h thng SAS ca cc TBA trung tm iu phi tun th

giao thc truyn tin IEC60870-5-101.

2.2.2 Cng kt ni d liu

Phi c t nht mt cng ghp ni vi iu khu vc.

2.2.3 Danh sch d liu

a) Tn hiu trng thi:

Tn hiu 2 bt: tt c cc tn hiu ca my ct, dao cch ly, dao ni t;

Tn hiu 1 bt: tt c cc tn hiu ca cc tn hiu cnh bo, cc tn hiu ca rle

bo v.


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b) Gi tr o lng:

i vi thanh ci : Tn s (Hz), in p (kV);

i vi my bin p: Cng sut tc dng (MW), cng sut phn khng

(MVAr), in p (kV), cng dng in (A) cc cp in p khc nhau

ca my bin p, nc ca my bin p;

i vi l ng dy: Cng sut tc dng (MW), cng sut phn khng

(MVAr), in p (kV), cng dng in (A).

2.2.4 iu khin thit b

Phi c hai ch iu khin l: iu khin ti Trung tm iu (Remote) v

iu khin ti TBA (Local);

Phi c kha chuyn ich iu khin Remote/Local cho ton TBA;

Phi c kha chuyn i ch iu khin Remote/Local cho tng ngn thit b

ca TBA;

Cc my ct, dao cch ly dao ni t (nu c) (tn hiu iu khin dng

NG/M);

Cc b i nc my bin p (tn hiu iu khin dng TNG/GIM).

2.2.5 Thit lp ch iu khin t xa

Thit b thuc quyn iu khin ca cp iu no th ch iu khin t xa phi

c thit lp cho ring cp iu .

2.3 Thit b u cui v thit b iu khin lp trnh c

2.3.1 Thit b u cui (RTU)

Thit b u cui (RTU) l mt thit b trung gian nhn v gi tn hiu.

Mt u RTU s ni kt n cc tip im ng ct v cc cm bin, u kia ni n

cc thit b iu khin mc cao hn, bng cc ng truyn thng nh cp in, cp

quang, sng radio,

RTU c th truyn d liu thu thp c n cc thit b khc v nhn lnh iu khin

t thit b khc bng mt cng ni tip.


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Hnh 6 V tr ca RTU trong trm bin p

2.3.2 Thit b iu khin lp trnh c (PLC)

Thit b iu khin lp trnh c (PLC) c pht trin c bit cho qu trnh t

ng ha. Tuy nhin, tnh linh hot, d ng dng v chi ph tng i thp ca cc

PLC so vi cc RTU gip n c s dng nhiu trong cc trm bin p cng nghip,

c bit l Bc M.

Nhng bt li chnh ca vic s dng cc PLC trong mi trng trm l cc im yu

trong giao tip vi relay. Mt s nh sn xut i theo hng ny, tuy nhin l pht

trin PLC trn nn h thng in t ng, tng cng giao tip PLC relay.

Cc chc nng logic ca cc PLC c a vo cc relay tin tin ca mt s nh

sn xut, ch to relay trong c thm vo kh nng thc hin chc nng logic, do

chc nng iu khin ti ch to ra khi nim relay thng minh.


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Hnh 7 V tr ca PLC trong trm bin p

2.3.3 So snh gia RTU v PLC

Mt PLC ni chung s c mt chng trnh chy, x l d liu ti ch, trong khi

RTU thng khng c chc nng ny.

Mt PLC thng giao tip vi h thng trung tm thng qua mng cc b (LAN) trong

khi mt RTU (nh tn ca n) hot ng t xa v giao tip qua cc mng din rng.

Mt PLC thng giao tip vi cc giao thc loi cc b nh DF1, Ethernet/IP,

Profibus v RTU thng giao tip bng cch s dng giao thc din rng nh DNP3,

IEC60870. Nhng ngy nay, mt RTU c th lp trnh ging nh PLC v PLC cng

cung cp thng tin lin lc din rng nh RTU nn s khc bit hin nay l khng r

rng. 2.4 Thit b in t thng minh (IED)

2.4.1 nh ngha

Chc nng PLC c tch hp vo relay. Relay khng ch l cc thit b bo v m

cn c nhiu chc nng hn. Mt lot thit b trn th trng, mt s mnh v bo v,

mt s mnh v iu khin, v thut ng relay bo v tr nn b gii hn khi m t


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thit b ny. iu ny dn n s xut hin ca thut ng thit b in t thng minh

(IED).

Thut ng thit b in t thng minh (IED) khng phi l mt nh ngha r rng,

ging nh thut ng relay bo v. Ni chung, bt k thit b in t c s hu mt

vi c tnh thng minh c th c gi l mt IED. Tuy nhin, lin quan c bit n

h thng bo v v h thng in t ng, thut ng ny ra i m t mt thit b c

nhiu chc nng bo v, nng cao iu khin ti ch, kh nng gim st v nng lc

giao tip trc tip vi h thng SCADA.

Hnh 8 V tr ca IED trong trm bin p

Mt trong v s relay t cc nh sn xut khc nhau c th thc hin chc nng bo

v, iu khin v gim st (bao gm o lng), nhng cn s h tr ca mt RTU

hoc b x l thng tin, n c gi l phn cng giao tip vi h thng SCADA.

Nhng thit b ny c th c gi l relay thng minh nhng khng nm trong nh

ngha ca mt IED.

Tng t, mt s relay c th giao tip trc tip vi h thng SCADA nhng thiu cc

chc nng iu khin. Nhng relay ny thng c s dng chung vi cc ngn iu

khin, ni cung cp cc chc nng iu khin cn thit to thnh mt h thng in

t ng. Nhng relay ny cng khng c phn loi l IED.

Kh nng ca mt IED thc hin y cc chc nng bo v, iu khin, gim st

v lin lc vi cp pha trn mt cch c lp v khng c s tr gip ca cc thit b


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khc nh RTU hoc b x l thng tin (khng bao gm cc module giao din) l tnh

nng xc nh l mt IED.

2.4.2 Cc chc nng ca mt IED

Cc chc nng ca mt IED in hnh c th c phn thnh nm khu vc chnh, bo

v, iu khin, gim st, o lng v truyn thng. Mt vi IED c th tin tin hn

nhng ci khc, v mt s c th mnh hn nhng chc nng nht nh, nhng chc

nng chnh ny c tch hp mc nhiu hay t.

2.4.2.1 Bo v

Chc nng bo v ca IED pht trin t chc nng bo v qu dng v chm t ca

relay bo v pht tuyn (do cc nh sn xut t tn IED ca h l feeder

terminals). iu ny l bi mt relay bo v pht tuyn c s dng trn hu ht cc

t phn phi, v thc t l chc nng bo v i hi nhiu hn l kh nng x l ca

r le s dng cho cc chc nng iu khin. IED cng c th linh hot, v khng

phi l mt relay bo v chuyn bit, v d nh bo v my pht. iu ny cng lm

cho cc IED gi c phi chng.

Sau y l hng dn cc chc nng bo v lin quan c th c t cc IED tin tin

nht (danh sch khng phi l bao gm tt c, v mt s IED c th khng c tt c

cc chc nng). Cc chc nng bo v thng c cung cp trong cc khi chc

nng ring bit, c kch hot v lp trnh c lp.

Qu dng 3 pha khng c hng (low-set, high-set and instantaneous function

blocks, with low-set selectable as long time-, normal-, very-, or extremely inverse,

or definite time);

Bo v chm t khng c hng (low-set, high-set and instantaneous function

blocks);

Qu dng 3 pha c hng (low-set, high-set and instantaneous function blocks,

with low-set selectable as long time-, normal-, very-, or extremely inverse, or

definite time);

Bo v chm t c hng (low-set, high-set and instantaneous function blocks);

Bo v mt pha;

Bo v qu in p 3 pha;

Bo v qu in p d;

Bo v thp p 3 pha;


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Pht hin dng ng my bin p/ khi ng motor.

2.4.2.2 iu khin

Chc nng iu khin bao gm ti ch v t xa, v hon ton c th lp trnh.

iu khin ti ch v t xa ln n 12 thit b ng ct (lnh m/ ng cho my

ct, dao cch ly,);

iu khin trnh t;

Kha lin ng ngn cp 1 ca cc thit b iu khin:

Trng thi thng tin 2;

Thng tin ca cc knh bo ng 2.

Bng iu khin HMI trn thit b.

Ghi ch:

1. Kha lin ng cp trm yu cu giao tip ngang hng


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in p 3 pha;

in p d;

Tn s;

Cng sut thc;

Cng sut phn khng;

H s cng sut;

Nng lng;

Sng hi;

Ghi cc nhiu lon thong qua (ln n 16 knh tng t);

Ln n 12 knh tng t.

2.4.2.5 Giao tip

Kh nng giao tip ca mt IED l mt trong nhng lnh vc quan trng nht ca h

thng in t ng ha v cng l mt trong nhng phng din phn bit cc thit

b ca cc nh sn xut khc nhau lin quan n cc chc nng.

Theo nh ngha, IED c th giao tip trc tip vi mt h thng SCADA, tc l thng

tin lin lc cp trn. Cc nh sn xut khc nhau s dng giao thc truyn thng khc

nhau.

Mt IED, ngoi giao tip vi cp trn, cng c mt cng ni tip hoc giao din quang

giao tip trc tip vi my tnh hoc my tnh xch tay cho mc ch cu hnh v ti

d liu, nn cc lin kt SCADA khng c sn hoc mong mun trong trng hp .

3. H thng SCADA ca mt s trm ti Vit Nam

3.1 H thng SCADA trm bin p 110kV Vinacraft

3.1.1 Tng quan

3.1.1.1 c im cng trnh v tnh cn thit ca h thng SCADA

Trm bin p 110kV Vinakraft l trm c u t xy dng mi, s c kt ni vo

li in phn phi ca tnh Bnh Dng. Trm vn hnh theo s ch huy chnh ca

Trung tm iu HT min Nam (A2). Do , cn phi to ng truyn thu thp

d liu SCADA ti trm a vo hot ng thng nht vi h thng SCADA hin

hu ca Trung Tm iu trn. Ngoi ra, theo tinh thn ch o ca Tp on in

lc Vit Nam v Trung tm iu Quc gia A0, h thng SCADA cn phi c


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thc hin ng b vi cc d n trm bin p xy dng mi v m rng, ci to. V

vy, s u t h thng SCADA ht sc cn thit.

Mc tiu ca h thng SCADA Trm bin p 110kV Vinakraft l:

Phc v cng tc iu hnh li in ca cc Trung tm iu i vi trm

110kV Vinakraft.

Thu thp d liu, gim st o lng, trng thi v iu khin t xa cc thit b

ca trm, ng thi h thng SCADA ca trm phi c kt ni vo h thng

SCADA chung ca cc Trung tm.

3.1.1.2 H thng SCADA ca Trung tm iu HT min Nam A2

Thit k ca h thng SCADA ca cc Trung tm iu l thu thp s liu thng

qua vic lp t cc RTU, h thng my tnh ti cc trm v nh my u ni vi cc

thit b ca h thng in thng qua cc transducer ( o I, U, P, Q, TPI, F...), cc

relay trung gian ( ly trng thi my ct, cu dao, relay bo v,...) v cc relay iu

khin ( iu khin ng/ct my ct, tng/gim b i nc my bin th,...). Cc

RTU, h thng my tnh ti trm thng qua cc ng truyn thng gi/nhn tn

hiu vi trung tm iu khin. Truyn thng gia RTU, h thng my tnh ti trm vi

trung tm iu khin h thng SCADA ca cc Trung tm iu th tun theo giao

thc (protocol): IEC 870-5-101.

Hin nay ngoi dng kt ni trn, cc h thng SCADA/EMS cn cho php thc hin

mt s dng kt ni khc vi cc nh my in, trm in c lp t h thng thu

thp d liu SCADA nh h thng iu khin ti ch bng h thng my tnh (DCS)

hoc h thng RTU phn tn (cc thit b RTU ny c gn trc tip trn cc panel

iu khin ca trm v c kt ni vi nhau theo chun Modbus/RS485). Cc h

thng ny u c chc nng tng ng nh cc thit b RTU tp trung nh nu

trn (giao thc truyn tin IEC-870-5-101).

3.1.2 Gii php cng ngh

3.1.2.1 Cc tiu ch chn la m hnh RTU

Cng ngh tin tin

Khai thc ti a nng lc ca cc thit b IEDs trong trm

Gim khi lng cp iu khin v cc thit b ghp ni (r le lnh, r le lp li

trng thi v cnh bo, )

Chi ph hp l

C kh nng kt ni vi h thng iu khin tch hp trm trong tng lai.

3.1.2.2 Gii php k thut ghp ni h thng SCADA trm 110kV Vinakraft

vo h thng SCADA

a) Cng giao tip truyn tin

+ Cng giao tip ti trung tm iu HT min Nam A2


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Ti A2 c cc my ch truyn thng lm nhim v thu nhn thng tin t cc trm u

cui xa. My ch truyn thng s iu khin cc cng giao tip RS-232 (V.24) thc

hin trao i thng tin vi cc trm thng qua knh truyn ny.

+ Cng giao tip ti trm 110kV Vinakraft

Ti 110kV Vinakraft s lp t 01 RTU c 01 cng kt ni v A2 v 01 cng

kt ni vi iu in lc trong tng lai. Thit b RTU c cc moun h tr

giao thc truyn tin trong h thng ca trm (Modbus/RS485, IEC870-5-103),

thng qua giao thc ny RTU c th giao tip c vi cc thit b IEDs ti

trm. Cc d liu ny s c trao i vi trung tm iu theo cc c s d

liu ti RTU thng qua cng truyn tin cho A2 c khai bo.

V vt l cc cng ny phi l cc cng RS-232 (V.24) tng thch vi cng

giao tip ca Trung tm iu HT min Nam (A2).

b) Gii php tuyn truyn dn

Trm 110kV Vinakraft s xy dng mt tuyn truyn dn quang bng rng phc v

truyn s liu SCADA. Thng qua tuyn cp quang Vinakraft Kumho M Phc

tn hiu SCADA ti trm 110kV Vinakraft s c truyn v Trung tm iu

HTMN A2.

c) Gii php thit b truyn dn

Vi gii php tuyn truyn dn nh trn, trong d n trm 110kV Vinakraft s trang b

cc thit b truyn dn quang v ghp knh PCM-30 ti trm 110kV Vinakraft, trm

110kV Kumho v A2. Thit b PCM-30 ny s thc hin nhim v kt ni thit b

RTU ti trm to ra cc knh truyn tn hiu SCADA t trm 110kV Vinakraft v

Trung tm iu HT min Nam (A2).

d) Gii php thit b SCADA

Vi tiu ch chn la thit b SCADA nh cp trn, d kin s trang b h

thng SCADA vi cc thit b sau :

Trang b 01 t RTU/SIC : Dng lp t thit b RTU, cc b bin i

transducer, cc rle lnh, rle trng thi,...

Trang b 01 b RTU : c cng truyn tin theo giao thc IEC60870-5-103 v

Modbus/RS485 (kt ni vi rle bo v, ng h o a nng, annunciator) v

c kh nng m rng trong tng lai.

Trang b transducer (c kh nng lp trnh c) lm nhim v thu thp cc tn

hiu o lng nh U, I, P, Q, F, MW, Mvar,...

Trang b 01 b transducer ch th nc my bin th.

Trang b cc rle lnh v rle lp li trng thi.

e) D liu trao i gia trm v Trung tm iu


17

+ Tn hiu s:

Tn hiu 2 bt: Tt c cc tn hiu ca my ct, dao cch ly ca tt c cc l

ng dy 110kV, my bin p T1 v ngn l tng pha trung th.

Tn hiu 1 bt: Tt c cc tn hiu ca dao ni t, cc tn hiu cnh bo, cc tn

hiu ca rle bo v cc l ng dy 110kV, my bin p v ngn l tng

pha trung th.

Cc tn hiu trng thi trn s c thu thp v thit b RTU thng qua cc module

tn hiu u vo s v thng qua cc cng kt ni giao thc IEC60870-5-103 v

Modbus RTU/RS485 (kt ni vi rle bo v, ng h o a nng, annunciator).

+ Tn hiu o lng:

i vi my bin p: Cng sut tc dng (MW), cng sut phn khng (MVar),

cng dng in (A) cc cp in p khc nhau ca my bin p, nc ca

my bin p.

i vi l ng dy: Cng sut tc dng (MW), cng sut phn khng

(MVar), in p (KV), cng dng in (A).

i vi thanh ci: in p (KV).

Cc tn hiu o lng s c thu thp t cc Transducer a chc nng, rle bo v

v thit b RTU thng qua giao thc truyn tin ModbusRTU/RS485, IEC60870-5-

103. Do s dng giao thc truyn tin ModbusRTU/RS485, IEC60870-5-103 nn

kh nng m rng ca TBA c thc hin d dng bng cch cu hnh cho thit b

RTU c c cc d liu o lng do cc Transducer v rle bo v cung cp

thng qua giao thc ModbusRTU/RS485, IEC60870-5-103

+ Tn hiu iu khin:

iu khin tng gim nc my bin p

iu khin ng m cc my ct, dao cch ly

Cc tn hiu iu khin s c thc hin thng qua cc module tn hiu u ra s

ca RTU.

Cn c vo yu cu thu thp tn hiu i vi trm bin p v bn v thit k S 1

si ca trm 110kV Vinakraft, khi lng tn hiu SCADA nh sau:

Tn hiu o lng : 18 tn hiu

Tn hiu bo v (1 bit) : 33 tn hiu

Tn hiu trng thi (2 bit) : 05 tn hiu

Tn hiu iu khin (2 bit) : 04 tn hiu


18

Hnh 9 S kt ni thng tin quang trm Vinacraft

3.1.3 Cu hnh v c tnh k thut h thng SCADA

3.1.3.1 Thit b RTU

a) Nhim v ca thit b RTU

M t chung thit b RTU:

S dng CPU cng nghip 32 bit tc cao (16MB RAM, 8 Mbytes Internal

Flash Memory).

S dng h iu hnh a nhim thi gian thc.

Ghi bin c (SOE) c nhn thi gian vi phn gii 1ms.

Cc thng s o lng ch yu ca RTU:

o P, Q, U, I, F, Cos (thng qua Transducer, r le, ng h a nng, )

Gim st trng thi my ct, dao cch ly, cc tn hiu cnh bo.

a lnh iu khin ti cc thit b in.

Cc tham s khc cn cho iu hnh v phn tch h thng in nh KWh,

KVarh, ghi bin c, v.v...

b) Cu hnh v c tnh k thut ca RTU

Da trn s lng tn hiu SCADA Trung tm iu HT min Nam cn thu thp,

h thng RTU phn tn s c cu hnh v c tnh nh sau:


19

Cng truyn tin v giao thc:

Cng thng tin Modbus (RS485): 02 cng

Cng thng tin IEC 60870-5-103 (RS485): 02 cng

Cng SCADA IEC 60870-5-101: 02 cng (01 cng d phng cho kt ni vi iu in lc trong tng lai)

Cng thu nhn tn hiu ng b thi gian thc GPS

Digital Input:

S knh: 32 knh

Thi gian bin i: 1ms

Digital Output:

S knh: 12 knh

in p lm vic (Un): 24 to 250 VDC

Analog input:

S knh: 4 knh

Thi gian bin i: 20ms

- Ngun cung cp: 48VDC

3.1.3.2 Transducer a chc nng lp trnh c

Loi: a chc nng lp trnh c.

Cp chnh xc: 0.2 theo tiu chun IEC688.

Cc gi tr o c: U, I, P, Q, F,

H tr kh nng kt ni vi my tnh, PLC, RTU, s dng giao thc truyn

tin Modbus RTU/RS485 hoc DNP3.0.

3.1.3.3 Transducer ch th v tr nc my bin p

u vo gm 19 x 10

u ra: Io = 4 20mA


20

Hnh 10 S kt ni h thng TRU trm Vinacraft

3.2 H thng SCADA trm bin p AMATA 1 v 2

3.2.1 Tng quan

H thng SCADA TBA Amata 1 & 2 trang b 02 thit b trung tm SCD5200 c

nhim v thu thp d liu v iu khin cc thit b ti trm. Mi thit b ny c lp

01 TBA v c kt ni vi nhau bng giao thc DNP TCP trn ng truyn cp

quang thng qua 02 modem quang 4xE1+4xETH Fiber Multiplexer lp 02 u.

3.2.1.1 Ti TBA Amata 2

Trng thi ng/m ca cc thit b nh my ct, dao cch ly, dao ni t (tn hiu 2

bt) c ly v thit b trung tm SCD5200 qua u vo s ca card I/O hoc qua

card Glass Optical DCB IEC60870-5-103 t cc rle bo v.

Tn hiu cnh bo (tn hiu 1 bt ) c ly v thit b trung tm SCD5200 qua u vo

s ca card I/O hoc t cc rle bo v bng giao thc IEC60870-5-103, giao thc

IEC61850.

Cc thng s o lng I, U, P, Q, c ly v thit b trung tm SCD5200 t cc

transducer a nng HC6600, ng h Simeas P50, ng h Amptron Ai205 bng giao

thc Modbus.


21

Ch th nc ca my bin p c ly v thit b trung tm SCD5200 qua u vo

tng t ca card I/O t transducer TAP100.


Trng thi ng/m ca cc thit b nh my ct, dao cch ly, dao ni t (tn hiu 2

bt) c ly qua u vo s ca card I/O trn thit b trung tm SCD5200.

Tn hiu cnh bo (tn hiu 1 bt ) c ly qua u vo s ca card I/O trn thit b

trung tm SCD5200.

Cc thng s o lng I, U, P, Q, c ly v thit b trung tm SCD5200 t cc

transducer a nng HC6600 bng giao thc Modbus.

Ch th nc ca my bin p c ly v thit b trung tm SCD5200 qua u vo

tng t ca card I/O t transducer TAP100.

D liu ca TBA Amata 2 c a v thit b trung tm SCD5200 TBA Amata 1

bng giao thc DNP TCP, sau tt c c a ra hin th trn mn hnh my tnh

bng giao thc DNP TCP v truyn v trung tm iu bng giao thc IEC60870-5-

101.

Hnh 11 S kt ni h thng SCADA gia hai trm AMATA 1 v 2

3.2.2 Thit b trung tm SCD5200


22

Chc nng, nhim v: thu thp d liu bng u vo tng t/s hoc qua cng truyn

thng, ng thi cho php iu khin cc thit b bng u ra s hoc qua cng truyn

thng.


Thit btrung tm SCD5200 bao gm:

SCD5200 Ten Card File: 01 b, l khung thit b SCD5200 Wide Range Power

Supply Module 100W 17-170VDC: 01 card, l card cp ngun.

SCD5200 CPU Optonet Ethernet Module (COE): 01 card, l card x l trung

tm. Trong c cng COM1 dng cu hnh thit b; cng COM2 dng cho

truyn thng ni tip h tr a giao thc; cng Ethernet dng kt ni vi cc

rle bo v pha 110kV bng giao thc IEC61850 v kt ni vi thit b trung

tm SCD5200 lp TBA Amata 1; cng Optonet dng kt ni nhiu thit b

trung tm SCD5200 vi nhau.

SCD5200 Comms Module Glass Optical IEC60870-5-103: 01 card, l card h

tr giao thc IEC60870-5-103, giao tip quang, dng kt ni vi cc rle

bo v pha 22kV.

SCD5200 Eight Channel Serial ModuleRS485/RS232: 01 card, dng cho truyn

thng ni tip, h tr a giao thc, dng kt ni vi cc ng h Simeas,

ng h Ai205 v transducer HC6600 bng giao thc Modbus.

SCD5200 MIO Module 24DI 6Ai 8DO 48VDC: 04 card, l card cung cp u

vo s/tng t v u ra s; dng ly cc trng thi ng/m ca thit b,

tn hiu cnh bo t cc tip im ph ca thit b hoc qua cc rle trung gian;

dng iu khin ng/m thit b; dng ly ch th nc my bin p, nhit

du, nhit cun dy...


Thit btrung tm SCD5200 bao gm:

SCD5200 Ten Card File: 01 b, l khung thit b.

SCD5200 Wide Range Power Supply Module 100W 17-170VDC: 01 card, l

card cp ngun.

SCD5200 CPU Optonet Ethernet Module (COE): 01 card, l card x l trung

tm. Trong c cng COM1 dng cu hnh thit b; cng COM2 dng cho

truyn thng ni tip h tr a giao thc; cng Ethernet dng kt ni vi

thit b trung tm SCD5200 lp TBA Amata 2; cng Optonet dng kt ni

nhiu thit b trung tm SCD5200 vi nhau.

SCD5200 Comms Module V.28 IEC60870-5-101: 01 card, l card h tr giao

thc IEC60870-5-101, dng truyn d liu v trung tm iu .


23

SCD5200 Comms Module Glass Optical IEC60870-5-103: 01 card, l card h

tr giao thc IEC60870-5-103, giao tip quang.

SCD5200 Eight Channel Serial ModuleRS485/RS232: 01 card, dng cho truyn

thng ni tip, h tr a giao thc, dng kt ni vi cc transducer HC6600

bng giao thc Modbus.

SCD5200 MIO Module 24DI 6Ai 8DO 48VDC: 06 card, l card cung cp u

vo s/tng t v u ra s; dng ly cc trng thi ng/m ca thit b,

tn hiu cnh bo t cc tip im ph ca thit b hoc qua cc rle trung gian;

dng iu khin ng/m thit b; dng ly ch th nc my bin p, nhit

du, nhit cun dy...

3.2.3 Transducer a nng HC6600

Chc nng, nhim v: phc v cho vic o lng. u vo l dng in ly t CT v

in p ly t PT. HC6600 h tr giao thc Modbus RTU/RS485 kt ni vi thit

b trung tm SCD5200. Cc gi tr o lng bao gm Ia, Ib, Ic, Vab, Vbc, Vca, Pa, Pb,

Pc, Pt, Qa, Qb, Qc, Qt, PF, Freq


Lp t 01 transducer HC6600 ti t RTU ly gi tr in p pha ng dy

110kV.


Lp t 02 transducer HC6600 ti t E01+W: TR4 o lng ngn 131, TR6 o

lng ngn 431.

Lp t 01 transducer HC6600 ti tE02+W: TR1 o lng ngn 171.



Lp t 02 transducer HC6600 ti tE05+W: TR5 o lng ngn 132, TR7 o

lng ngn 432.

Lp t 01 transducer HC6600 ti tOutgoing 473: TR8 o lng ngn 473.








3.2.4 TAP POSITION Transducer M100

Chc nng, nhim v: ly ch th nc my bin p. u vo l in tr, u ra l dng

in 4 20mA a vo u vo tng t ca thit b trung tm SCD5200.


24

Ti TBA Amata 2: Lp t 01 transducer M100 ti t RTU ly ch th nc ca my

bin p 1T.

Ti TBA Amata 1: Lp t 02 transducer M100 ti t RTU: M1 ly ch th nc my

bin p 1T, M2 d phng; ch th nc my bin p 2T ly qua transducer (chc nng

tng t M100) trang b ti t E05+RCP.

3.2.5 Modem quang 4xE1+4xETH Fiber Multiplexer

Chc nng, nhim v: kt ni d liu gia hai thit b trung tm SCD5200 lp t

TBA Amata 1 & 2 qua cng Ethernet. ng thi cung cp knh thoi hotline gia hai

trm, h tr truyn thng ni tip qua cng RS232.

Ti TBA Amata 2: Lp t 01 modem quang + gi ODF ti t RTU.

Ti TBA Amata 1: Lp t 01 modem quang + gi ODF ti t RTU.

3.2.6 Ethernet Media Converter

Chc nng, nhim v: chuyn i Ethernet giao tip quang giao tip in. V cng

Ethernet trn thit b trung tm SCD5200 h tr giao tip quang (u cm ST) nn

kt ni vi PC hoc Switch h tr giao tip in (u cm RJ45) th phi trang b thm

b chuyn i ny.

Ti TBA Amata 2: Lp t 01 b Ethernet Media Converter ti t RTU.

Ti TBA Amata 1: Lp t 01 b Ethernet Media Converter ti t RTU.

3.2.7 Serial2Fiber Converter

Chc nng, nhim v: chuyn i t RS232/422/485 sang giao tip quang. V card

Glass Optical IEC103 trn thit b trung tm SCD5200 h tr giao tip quang nn

kt ni vi cc rle bo v h tr chun RS485 th phi trang b thm b chuyn i

ny.

Ti TBA Amata 2: Lp t 01 b Serial2Fiber Converter ti t RTU.

Ti TBA Amata 1: Lp t 01 b Serial2Fiber Converter ti t RTU.

3.3 H thng SCADA ti trm 110kV Th Ngh


25

Hnh 12 S kt ni H thng SCADA trm 110kV Th Ngh

3.4 H thng SCADA trm 500kV Sng My


26

Hnh 13 v 14 S kt ni h thng SCADA trm 500kV Sng My

4. Kt lun

Trm bin p truy cp t xa c u nhc im nh sau:

u im:

Thu thp d liu, x l v iu khin nhanh chng.

Gim thiu ti a sai st ca con ngi.

Gim chi ph cho cng tc vn hnh, gim st, iu khin v thu thp d liu.

Nhc im:

Chi ph u t ban u cao.

Yu cu i ng cn b k thut c trnh cao.

S dng trm bin p iu khin v gim st t xa cng cc thit b thng minh ti ch

l xu hng v yu cu tt yu trong H thng in nhm mc ch m bo H thng

lun c tin cy cao v vn hnh n nh, lin tc.

5. Ti liu tham kho

[1] Practical Electrical Network Automation and Communication.

[2] Klaus-Peter Brand, Volker Lohmann and Wolfgang Wimmer, Substation

Automation Handbook..


27

[3] R. P. Gupta, Substation Automation Using IEC61850 Standard, in Fifteenth

National Power Systems Conference (NPSC), IIT Bombay, December 2008.

[4] Tp on in lc Vit Nam, Xy dng v Qun l vn hnh thit b SCADA

ca Trm bin p v Nh my in, 2008

[5] Cng ty Thit k Thnh t, H thng thng tin lin lc v SCADA trm bin p

110kV Vinacraft, 10/2008.

[6] Ngun ti liu trn internet.

Documents

Tram bien ap dieu khien tu xa-Dang Xuan Quang-12180119.pdf