Huong Dan Thuc Hien Pss-Adept _09!01!2009

5/25/2018 Huong Dan Thuc Hien Pss-Adept _09!01!2009

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HNG DNTNH TON M PHNG LI INDNG CHNG TRNH PSS/ADEPT

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I. KIM SOT SA I: MC CH:Hng dn phng php thu thp d liu v m hnh li in bngchng trnh PSS/ADEPT dng tnh ton m phng cc bi ton li in

nh:

Tnh ton phn b cng sut (Tn tht in p, cng sut); Tnh ton v tr, dung lng b ti u cho li in trung h th (CAPO); Tnh ton im dng (im tch li) ti u (TOPO); Phi hp bo v; Cc bi ton khc (phn tch sng hi, tin cy li in).

II. PHM VI P DNG:Phng php ny p dng thng nht cho X nghip in cao th min

Nam v cc in lc tnh/thnh ph trc thuc Cng ty in lc 2 trong victnh ton cc bi ton trn li in s dng chng trnh PSS/ADEPT.

III. TI LIU THAM KHO: Ti liu hng dn s dng chng trnh PSS/ADEPT (Ti liu km theo

chng trnh);

Ti liu ging dy, hng dn s dng phn mm PSS/ADEPT (Ti liu doi hc Bch Khoa Thnh ph H Ch Minh bin son);

H thng in Truyn ti v phn phi (Tc gi H Vn Hin, NXB ihc Quc gia TP.HCM, 2005); Electrical Distribution System Protection (Cooper Power Systems, 1990); Cc file lu ti th mc //server/data/ktsx/hoaiphuong/HD.PSS-ADEPT.

IV. NH NGHA, THUT NG, CH VIT TT:PSS/ADEPT : Power System Simulator/Advanced Distribution

Engineering Productivity Tool.

TOPO : Tie Open Point Optimization.

CAPO : Optimal Capacitor Placement.TCC : Time-Current Curve.

MBA : My bin p.

TBA : Trm bin p

V. TRCH NHIM:Cc in lc tnh/thnh ph trc thuc, X nghip in cao th min

Nam p dng phng php ny vo vic trin khai PSS/ADEPT ti n vmnh.


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VI. NI DUNG: Yu cu d liu li in cho PSS/ADEPT; M hnh cc i tng li in bng PSS/ADEPT; Yu cu i vi cc bi ton tnh ton m phng li in; Cc lu khai thc chng trnh t hiu qu.

1.YU CU D LIU LI IN CHO PSS/ADEPT m hnh li in trn PSS/ADEPT cn thu thp d liu li in

nh sau:1.1.D liu ng dy:

Chiu di ng dy; Chng loi v c tnh k thut ca dy dn; Hnh thc tr, chiu cao ca dy dn so vi t, b tr cc pha trn ct.

Cch xc nh hng s ng dy bng mdun ca chng trnh trnh by phn 2.1.2.D liu thit b chnh

Ngun: Gi tr dng ngn mch 1 pha v dng ngn mch 3 pha ti thanh ci

22kV trm 110kV v thanh ci 110kV trm 220kV.Cch xc nh cc thng s ngun trnh by phn 2.

My bin p: V tr lp t, cc gi tr Po, Pk, Io%, Uk% ca MBA (nu khng th

tra cu c t l lch MBA th c th tham kho TCVN8084-1994).Cch xc nh cc thng s MBA trnh by phn 2.T b: V tr lp t, loi (c nh, hay ng ng), dung lng t.Cc thit b ng ct: V tr lp t, cc thng s lin quan c tuyn dng in thi gian

(TCC) ca thit b.

1.3.D liu ph ti Xy dng biu ph ti in hnh ngy cho cc nhm ph ti ctrng. V d: Cng nghip, sinh hot, bm Nng nghip,

Xc nh cng sut, costiu th ca tng ph ti.Cch xc nh thng s ca ph ti trnh by phn 2.


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2.M HNH CC I TNG LI IN BNG PSS/ADEPT:2.1.ng dy:

2.1.1.Yu cu hng s ng dy Tn ng dy, s pha (1 pha, 3 pha); Chiu di ng dy; Tng tr th t thun, tng tr th t khng ca ng dy.

i vi ng dy trn khng s dng mdun Line Constants cachng trnh tnh cc hng s ng dy, ng dy cp ngm vcp ABC trung th c th tnh ton theo l thuyt hoc tra t catalogueca nh sn xut.

2.1.2.Xc nh hng s ng dyS dng mdun Line Constants ca chng trnh tnh ton hng

s ng dy t cc d liu yu cu ti mc 1.S dng chc nng Line Constants

a. M chc nng Line Constants t menu [Tools] chng trnh.

Menu chnh ca mdun line constants

To mi cu trcng dy (c)

Cc ty chn ca chcnng line constants (b)

Tnh ton lineconstants (e)

(a)


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b. Thit lp cc ty chn ca chc nng line constants.

c. To mi 1 cu trc ng dy.

d. Thit lp cc thng s ca cu trc ng dy.

Tn s ca HT,chn = 50hZ

Chn units l n v SI

Click i chut vo y thi tlp cu trc ng dy (d)

Trng hp mun chn c tnh k thut dy dn t file bnngoi th c th xc nh ng dn ca file cn s dng tiyTham kho file th vin chun ca chng trnh nz-austconductors.csv


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e. Chy chc nng Line constants xc nh hng s ng dy.

f. Cp nht hng s ng dy vo file th vin ca chng trnh(*.con).

S pha cang dy

Chng loi dy dn trn tng pha.- c tnh k thut ca cc loi dy dn c th

tham kho t catalogue ca cc nh sn xuttrong nc hoc t th vin chun cachng trnh.

B tr pha cang dy

Cp nht gi tr tng tr th t thun v tngtr th t nghch vo th vin ng dy


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File th vin thng s ng dy v thit b ca PSS/ADEPT l 1 filedng text c phn m rng l *.con (file mu ca chng trnh l pti.con).

Cu trc *.con file ny cho php ngi dng thm vo cc b thng s muca dy dn hoc thit b nhm thun tin cho vic s dng.

Cu trc ca *.con file tham kho thm ti liu hng dn s dng cachng trnh.

Lu :Khi t tn 1 cu trc ng dy cn th hin r cu trc dy dn

(Vd: 3A150+A95) thun tin khi xem s ;

i vi li in trung th khng tnh nh hng ca thnh phndung ca ng dy ln li in (cho thnh phn dung trong hng

s ng dy =0);i vi li in h th khng tnh nh hng ca thnh phn

dung v khng ca ng dy ln li in (cho thnh phn dung,khng trong hng s ng dy =0).

2.2.My bin pYu cu d liu:

Tn MBA; Pha (1pha, 3 pha), t u dy; Cng sut nh mc (lu :nhp cng sut trn mi pha); Tng tr tng ng ca MBA.


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Tng tr tng ng ca MBA tnh theo cng thc sau:n

n

PR

Sdm

v%/100

n nZ U

khi

2 2

n n nX Z R

Trong gi tr Pn v Un% ly t kt qu th nghim ngn mch gn

nht hoc ly theo TCVN 1984-1994. xc nh mt cch gn ng nht nh hng ca mt TBA ln li

in, tn tht khng ti ca MBA cn thit c a vo m hnh TBA.M HNH TRM BIN P

a.TBA cng cng s c m hnh nh sau:

Trong :

Po l tn hao khng ti ca MBA v2

2%*

100O

o o

I SdmQ P

Po v Io% c ly t th nghim khng ti gn gn nht hocly theo TCVN 1984-1994.

Gi tr ti c tnh ton t ch s in k tng ca trm bin p(trnh by ti mc 2.4)

b.TBA khch hng o m trung th: c m hnh bng 1 ph ti.c.TBA khch hng o m h th: c m hnh ging nh trmcng cng.

Lu :Khi t tn cho TBA v thnh phn khng ti ca MBA cn lu

thm tip u ng pha trc thun tin cho vic cp nht v tracu v sau ny;

My bin p 3 pha loi c 1 MBA t u dy l Delta Wye -30 deg(tng ng vi t u dy /Y-11). TBA 3 pha loi c 3 MBA v

TBA 1 pha t u dy l Wye Wye. Tng tr tng ng cho MBA 3 pha (loi 3 MBA 1 pha) v MBA

1 pha l ging nhau.VD:- TBA 1 pha MBA lp trn pha A nn t tn l A.xxxxxxxxxx;

- TBA 3 pha 3 MBA nn t tn l Y.xxxxxxxxxx;- TBA 3 pha 1 MBA nn t tn l T.xxxxxxxxxx;- thnh phn khng ti ca MBA 1 pha 25kVA lp trn pha A nn

c tn l Po25-A.xxxxx(khng cn thit qun l theo tn trm vkhng thng xuyn cp nht s liu).

Ti

Po + jQoMBA


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2.3.NgunYu cu d liu:

Tn ngun (nn t l: tn trm+pht tuyn, Vd: TanHung431); Loi, in p nh mc; Cng sut nh mc; Tng tr th t thun v th t nghch ca ngun.

Trong Tng tr th t thun v th t nghch ca ngun c tnh ton t

gi tr Cng sut nh mc, dng ngn mch 1 pha v 3 pha ti ntngun theo cng thc sau:

13f

UdmZ

I v 0 1

1

3*2

f

UdmZ Z

I

Thng thng do ta ch c c gi tr bin ca dng ngn mch1 pha v 3 pha ti nt ngun v R1


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Biu ph ti (Load Snapshots); Loi ph ti (cn bng v khng cn bng); Cng sut thc (P); Cng sut phn khng (Q).

Lu : thun tin cho vic cp nht d liu ti cho chng trnh t fileexcel, nn chn mi loi ph ti (1 pha v 3 pha) l khng cn bng;

Vic t tn cho ph ti (Name) cn phn theo nhm thun tin chovic cp nht v theo di ph ti.

V d:Trn li in c 5 nhm ph ti c trng (qua theo di,nh gi t thc t qun l vn hnh), khi TBA c m trm l Athuc nhm ph ti (1) th nn c tn l 1.A.


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2.4.2.Xc nh cng sut ca tiTrnh t thc hin

a.Xy dng biu ph ti c trng cho tng nhm ph ti(qua QLVH), tham kho cch xy dng biu ph ti chocc nhm ph ti trong phn ph lc.

b.Xc nh cng sut tiu th ca ph ti, tham kho 2 phngphp sau:b.1.Da vo kt qu o ti nh k hng thng (phng php

ny n gin, nhng d gy sai s do thi im o ti lkhng ng thi).

b.2.Da vo sn lng ca tng khch hng (hoc TBA)trong thng (c th truy xut t chng trnh CMIS) v

nh gi h s cng sut (cos) ca khch hng (hocTBA) thng qua QLVH.

V d:Kho st khch hng (hoc TBA) A c sn lng l 100kWh/thng

(thng c 30 ngy), cos= 0,8 v thuc nhm ph ti (1) c biu phti in hnh nh sau:

Khi nhm ph ti (1) c chia thnh 4 load snapshots nh sau:Snapshot Relative duration (pu) Scale Factor

Base 0 123h 05h 7/24 0,306h 08h 3/24 0,809h 17h 9/24 0,518h 22h 5/24 1,0

Lc ti mc Base P = 100/30/(0,3*7+0,8*3+0,5*9+1,0*5) ~ 0,238.Q tng ng vi cos= 0,8 l Q = P*tan(arccos(0,8)) ~ 0,179.Khi gi tr nhp vo cho ph ti l:Name: 1.A


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Categories: 1Type: Constant Power, Unbalanced

Load:1 pha (Pha A) 3 pha

P (kW) Q (kVar) P (kW) Q (kVar)Pha A P Q P/3 Q/3Pha B 0 0 P/3 Q/3Pha C 0 0 P/3 Q/3

Lu :Khi nhp ti vo chng trnh cn phi chnh Load Snapshots vmc Base

2.5.Cc thit b khc2.5.1.Node

Yu cu d liu: Tn node; in p ti node .

Lu :Tn node nn t theo nhm (thm tip u ng pha trc) thuntin trong vic loi b mt s nhm node khng mong mun khi phntch cc bi ton c th (nh loi b cc node h th khi phn tch biton CAPO cho li trung th).V d:li in c 2 node trung th v 4 node h th khi t tn nnc tip u ng pha trc tn node (trung th l T, h th l H) ccnode h th s c loi b (nhm ti u thi gian tnh ton) khi phntch bi ton CAPO.


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2.5.2.SwitchYu cu d liu:

Tn thit b ng ct bo v; c tuyn dng in thi gian (TCC) ca thit b bo v.


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Thm mi v thit lp TCC cho thit b bo v.

2.5.3.T bYu cu d liu:

Tn t b;in p;Dung lng;Loi (ng ng hay c nh).

Click vo y thm c tuyn TCC cho thit b

M HNH 1 THIT B NG CT BO V


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3.YU CU I VI CC BI TON TNH TON, M PHNG LIIN:

3.1.Tnh ton tn tht in nng trn li in trung h th:3.1.1.M hnh li in trn PSS/ADEPT: (pht tuyn trung th thuc 1

MBA 110kV nn v trn cng 1 file PSS/ADEPT, trng hp cbit c th v mi pht tuyn trung th 1 file).

3.1.2.Phn tch bi ton phn b cng sut (loadflow).3.1.3.Nhn xt nh gi, nu cn thit phi hiu chnh li d liu sao cho

kt qu phn tch t PSS/ADEPT tng i gn ng vi kt quvn hnh (sai s 5%).

3.1.4.Xut cc Report v nh gi tn tht, trn ng dy trung h thv TBA.

3.2.Tnh ton dung lng, v tr b ti trn li in trung h th -CAPO:

3.2.1.S dng s li in xy dng t bc 3.1.


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3.2.2.Tm v tr b ti u cho cc v tr b c nh hin hu: In service tt c cc v tr b c nh, ng ng hin hu(1);

Nhp cc ch tiu kinh t cho chng trnh; Phn tch bi ton CAPO cho cc pht tuyn (trm bin p), khi

phn tch bi ton CAPO cho li trung th, cc node h th cnc loi b, khng a vo tnh ton nh trnh bi mc 2.5.1, gim thi gian tnh ton ca chng trnh.

3.2.3.Lp k hoch ti b tr v lp mi t b.3.2.4.Theo di, nhn xt nh gi hiu qu ca vic lp b.

Lu : vic lp b t hiu qu, nn tnh ton b trn li in hth trc khi tnh ton b trn li in trung th.

3.3.Tnh ton phi hp bo v li in:3.3.1.S dng s li in xy dng t bc 3.1.

3.3.2.Cp nht TCC ca cc thit b bo v vo s .3.3.3.Xem xt phi hp gia cc c tuyn TCC ca cc thit b trn trc

chnh (nn chn cp chn lc v thi gian t=0,2-0,3s).3.3.4.Lp k hoch thay i tr s ci t thit b bo v nu c.

3.4.Tnh xc nh cc im dng (im tch li) ti u - TOPO:3.4.1.S dng s li in xy dng t bc 3.1 (ni cc pht tuyn

c mch vng lin kt vo cng 1 file).

3.4.2.Phn tch bi ton TOPO.3.4.3.Lp k hoch thay i v tr cc im tch li.3.4.4.Theo di, nhn xt nh gi hiu qu.

4.CC LU KHAI THC CHNG TRNH T HIU QU Cc pht tuyn 22kV thuc trm 110kV nn c v trn cng 1 file

PSS/ADEPT, vic cp nht d liu li in s hon ton thc hin trnfile ny, file ny s c dng chy bi ton TOPO, phi hp bo v.

Check vo y in servicecc t b hin hu (1)


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Khi phn tch cc bi ton khc nh CAPO hay Loadflow s tch mi phttuyn thnh mt ring file thun tin hn cho vic phn tch, nh gi;

Lu vic t tn cho cc i tng trn s , nn t tn theo nhm d dng cho vic cp nht theo di khi cn thit. Trnh vic t tn trnglp v d gy li khi chy chng trnh;

Sau khi m hnh li in cn tin hnh kim tra li kt qu m phng tchng trnh vi gi tr vn hnh thc t bng cch chy bi ton phn bcng sut (loadflow) cho tng thi im (load snapshots) v so snh vi gitr vn hnh thc t ti mt s node trong h thng, nu sai s qu ln cnkim tra vic nhp liu hoc c hiu chnh li biu ph ti ca cc nhm

ph ti c c li in m phng gn ng nht; trnh sai st trong qu trnh nhp liu, nn lp th vin cho cc itng chnh nh ng dy, MBA trnh nhm ln khi nhp bng tay.

i vi d liu ph ti, nn chun b liu di dng file d liu excel sau a vo chng trnh hn ch sai st;

Khi chy bi ton phn b cng sut (loadflow), s ln lp bi ton hit thng 4, nu s ln lp bi ton hi t > 4 cn tin hnh kim trali tnh chun xc ca d liu u vo nh MBA, ph ti.

VII.TRIN KHAI THC HIN Cc n v cn c phn cng c th cc cn b ph trch cng tc

PSS/ADEPT ti n v mnh.

Trong qu trnh thc hin, nu cn b ph trch cng tc chuyn cng tckhc, n v phi c bo co v Phng K thut sn xut Cng ty. Ngichn thay th phi c o to m bo kh nng m trch cng vic.

Cc n v cp nht li s li in theo ni dung ca hng dn nytrc ngy 13/02/2009. nh k hng qu cn phi cp nht li s li

in.VIII. PH LC:

PHNG PHP XY DNG BIU PH TI IN HNH CHO CCNHM PH TI C TRNG.

Bc 1: Xy dng biu ph ti cho pht tuyn trung th.Thu thp gi tr cng sut u pht tuyn trong nhiu ngy (khng cttit gim) v ly gi tr trung bnh c biu ph ti c trng chopht tuyn.

Bc 2: Xy dng biu ph ti cho cc nhm ph ti.


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nh gi cc nhm ph ti c trng; Tin hnh o t 2-3 ph ti in hnh cho tng nhm ph ti; Ly trung bnh cng cc gi tr o c c biu ph ti in

hnh cho cc nhm ph ti cn kho st.Bc 3: Cn i, hiu chnh li biu ph ti ca cc ph ti c trng

nu cn thit.V d:Tham kho s li in nh hnh di, gm 3 nhm ph ti c trng 1, 2,3. Gi s biu ph ti in hnh v cng sut ti u pht tuyn nh sau

Snapshot Relative duration (pu) Scale Factor P (kW) Q (kVar)24h 05h 6/24 0,5 403,9 313,506h 16h 11/24 0,8 646,2 501,617h 23h 7/24 1,0 807,8 627,0

S minh ha tn file: m hnh pss-adept.


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Gi s biu ph ti c trng, v tng cng sut ca tng nhm ph tinh sau:

Nhm ph ti 1Snapshot Relative duration (pu) Scale Factor P (kW) Q (kVar)24h 05h 6/24 1,0 120 90,006h 16h 11/24 0,5 60 4517h 23h 7/24 0,3 36 27

Nhm ph ti 2Snapshot Relative duration (pu) Scale Factor P (kW) Q (kVar)24h 05h 6/24 0,2 72 55,206h 16h 11/24 1,0 360 276,017h 23h 7/24 0,2 72 55,2

Nhm ph ti 3Snapshot Relative duration (pu) Scale Factor P (kW) Q (kVar)24h 05h 6/24 0,2 128,4 9606h 16h 11/24 0,3 192,6 14417h 23h 7/24 1,0 642,0 480

So snh kt qu vi s liu vn hnh u pht tuyn

Gi tr vn hnh thc t Kt qu t PSS/ADEPT

Snapshot P (kW) Q (kVar) P (kW) Q (kVar)24h 05h 403,9 313,5 329,9 272,606h 16h 646,2 501,6 631,6 512,117h 23h 807,8 627,0 773,5 622,8

Kt lun:Cn phi hiu chnh li Scale Factor trong biu ph ti v cngsut ca cc nhm ti in hnh, t c s m phng tng i gnng vi li in thc t.Scale Factor ca cc ph ti in hnh sau khi hiu chnh:

Scale FactorSnapshot Nhm 1 Nhm 2 Nhm 324h 05h 1,0 0,2 0,306h 16h 0,5 1,0 0,317h 23h 0,3 0,25 1,0


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So snh kt qu vi s liu vn hnh u pht tuyn (sau khi hiu chnhScale Factor):

Gi tr vn hnh thc t Kt qu t PSS/ADEPTSnapshot P (kW) Q (kVar) P (kW) Q (kVar)24h 05h 403,9 313,5 395,0 322,506h 16h 646,2 501,6 631,6 512,117h 23h 807,8 627,0 791,9 637,1

Nh vy: sau khi hiu chnh ta c s m phng li in c sai s so

vi thc t vn hnh 3%. S ny s c s dng tnh ton m phngcc bi ton khc./.

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Huong Dan Thuc Hien Pss-Adept _09!01!2009