03-Power Flow Solution

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2013 Siemens Industry, Inc. All rights reserved

Tab 3 E!l"ring #"$er %l"$ S"luti"n


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -2

#"$er %l"$ S"luti"n (eth"ds

Newton-!a"#son Fi$ed Slo"e Deco%"led Newton-!a"#son &FDNS'

F%ll Newton-!a"#son &FNS('

Deco%"led Newton-!a"#son &NS)('

*a%ss-Seidel Normal *a%ss-Seidel &S)(+'

,odified *a%ss-Seidel &,S(+'


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -

Power Flow>Solution>Solve"r T""lbar

#"$er %l"$ S"luti"n

)"nvergence ("nit"r


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)"m!aris"n "* S"luti"n (eth"ds

S"luti"n (eth"ds Advantages +isadvantagese$t"n-a!hs"n a!id c"nvergence "n $ell Int"lerant "* data err"rs

&%S/,%+S' c"nditi"ned cases. and v"ltages. " indicati"n *"r cause "*

c"nvergence *ailure. +i**iculty c"nverging $hen

reactive limits are restrictive.

%ied Sl"!e e$t"n &%+S' is *aster than %ull e$t"n &%S/'.

#"ssible t" reach a tighter t"lerance $ith %ull e$t"n.

S"luti"n (eth"ds Advantages +isadvantages

auss-Seidel T"lerant "* data err"rs and Sl"$ t" c"nverge, number "*

&S/,(S/' !""r starting v"ltages. %ails iterati"ns increases as system

gently, indicates area "* net- sie increases. Sensitive t"

$"r4 $ith !r"blems. accelerati"n *act"rs. S/

cann"t handle negative reactances.


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S"luti"n !ti"ns

A%tomatic Ad.%stments/ Transformer Ta"

Switc#ed S#%nts

Area 0nterc#an1e

Control

P#ase S#ifter DC Ta"s

)t#er )"tions

*enerator +ar (imits Flat Start

Non-dier1ent Sol%tion


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evie$ing #"$er %l"$ esults

*ra"#ics

(ist

!e"ort


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Subsystem Select"r

Access from toolar/

Access from "%ll-down

men%/ Subsystem6 Bus / Simple

Bus / Area / Owner / Zone

7,emori8e9 and 7!ecall9

"reio%s s%system

selections


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -:

%iltering in S!readsheet ie$

Filter/ To create filtered s"reads#eet y t#e Filter *rid Dialo1; First< select a col%mn &left click on #eadin1';

!i1#t click at t#e #eadin1;

Select Filter *rid &=oolean o"eration of AND > )!';

Any n%mer of col%mns may e filtered; =%t< only one at a time;

A new filtered s"reads#eet

will e created;

Cells in filtered s"reads#eet

are linked directly to cells in

ori1inal s"reads#eet;

Cell al%es dis"layed may e

ro%nded-off;

Can c#an1e "recision< font Reports > Busbased reports > Powerflow

output

Dis"lays 7soled9 case information for a

%s< s%c# as olta1e and "ower flow; !e1%lar format/ Dis"lays ranc# flows

Gide format o%t"%t/ Dis"lays act%al

%s olta1e< 1enerator > load > s#%nt

attac#ed to t#e %s< and ranc# flows

)%t"%t wit# am"s/ )nly aailale w#en7wide format o%t"%t9 is in effect;

Dis"lays flows and ratin1s in am"eres

&if %s ase k+ 6 '

:us :ased #"$er %l"$ ut!ut


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -B?

Eamining #"$er %l"$ ut!ut

E$am"le/ =%s ased re"ort for %s 25/

BUS 205 SUB230 230.00 CKT MW MVAR MVA % 0.9490PU -9.18 X-- LOSSES --X X--- AREA --X X-- ZONE -

218.27KV MW MVAR 2 L!"TCO 2 SECON#

TO LOA#-P$ 1200.0 700.0 1389.2

TO S"UNT 0.0 -270.2 270.2

TO 154 #OWNTN 230.00 1 354.9 250.5 434.4 7 0.70 7.05 1 &LAPCO 1 &RST

TO 201 "'#RO 500.00 (1 -590.7 -148.2 09.0 7 1.0000UN 12.4 174.07 2 L!"TCO 2 SECON#

TO 203 EAST230 230.00 1 -83.3 -29.7 88.5 47 0.42 3.81 2 L!"TCO 2 SECON#TO 203 EAST230 230.00 2 -83.3 -29.7 88.5 47 0.42 3.81 2 L!"TCO 2 SECON#

TO 20 URB!EN 18.000 1 -797.5 -472.8 927.1 103 1.0000LK 2.48 127.22 2 L!"TCO 2 SECON#


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Subsystem T"tals

Power Flow > Reports > Bus based reports > Subsystem summary / totals****************** SUMMARY FOR THE SUBSYSTEM SPECIFIED BY ******************BUSES: 101 [NUC-A 21.600] TO 154 [DOWNTN 20.00]****************************************************************************** AREA SWIN! BUS SUMMARY"---- AREA -----" "------ SWIN! BUS ------" "---- #ONE -----" $ "-- NAME --" BUS$ "-- NAME --" BAS%& $ "-- NAME --" MW M&AR M&ABASE 1 F'APCO 101 NUC-A 21.600 (( P'ANT (50.0 )1.2 00.0

6 BUSES 2 P'ANTS 2 MACHINES 2 FI"ED SHUNTS 0 SWITCHED SHUNTS 'OADS ) BRANCHES TRANSFORMERS 0 DC 'INES 0 FACTS DE&ICES 0 !NE DE&ICES "------ ACTUA' ------" "----- NOMINA' ------" MW M&AR MW M&ARFROM !ENERATION 1500.0 162.4 1500.0 162.4TO CONSTANT POWER 'OAD 1200.0 00.0 1200.0 00.0TO CONSTANT CURRENT 0.0 0.0 0.0 0.0TO CONSTANT ADMITTANCE 0.0 0.0 0.0 0.0TO BUS SHUNT 0.0 4. 0.0 00.0

TO FACTS DE&ICE SHUNT 0.0 0.0 0.0 0.0TO !NE BUS DE&ICES 0.0 0.0 0.0 0.0TO 'INE SHUNT 0.0 0.0 0.0 0.0FROM 'INE CHAR!IN! 0.0 )41.2 0.0 )20.0

&O'TA!E "----- 'OSSES -----" "-- 'INE SHUNTS --" CHAR!IN! 'E&E' BRANCHES MW M&AR MW M&AR M&AR 500.0 11.10 15. 0.0 0.0 )1(. 20.0 6.2 .5( 0.0 0.0 2. 21.6 2 .2) 14).() 0.0 0.0 0.0


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -2B

Problem 3!" #$e%& power flow %ases

Pick up EXER2-2.SAV

What is the size of the case? (File > File Information > List thenumber of system components)

Find out the ene!ation" #oad" and #oss in each a!ea (Power Flow> Reports > Area/Owner/Zone Total)

$et a po%e! &o% so#ution !epo!t at a## 'uses in the case. (PowerFlow > Reports > Bus base reports)


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/imit )hec4ing e!"rts

Power Flow>Reports>Limit #$e%&in' !eactie ca"aility

*enerator %s

,ac#ine terminal

=ranc#es !e1%lated %ses

Controllin1 transformers

)%t-of-limit %s olta1e


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:ranch verl"ad )hec4ing

0ncl%de transformer< non-transformerranc#es and>or reakers I switc#es;

C#oice of !atin1 Set A< =< C or All;

Percent loadin1 com"%ted eit#er on ,+A

asis or c%rrent asis< as defined in raw

data file or Pro1ram Settin1s;

SUBS'STEM LOA#N! C"ECK )NCLU#E#* LNES+ BREAKERS AN# SWTC"ES+ TRANS&ORMERS, )EXCLU#E#* NONE,

LOA#N!S ABOVE 90.0 % O& RATN! SET A )MVA &OR TRANS&ORMERS CURRENT &OR NON-TRANS&ORMER BRANC"ES,*

X--------- &ROM BUS ----------X X---------- TO BUS -----------X

BUS X-- NAME --X BASKV AREA BUS X-- NAME --X BASKV AREA CKT LOA#N! RATN! PERCENT

153 M#230 230.00 1 154 #OWNTN 230.00/ 1 1 27.0 300.0 92.0

205 SUB230 230.00 2 20 URB!EN 18.000/ 2 1 1000.0 900.0 111.1


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=ranc# !atin1/

=ranc# Flow/

Percent (oadin1/

7C%rrent (oadin19 &in %nits of ,+A'/

Transformer 7,+A (oadin19 ased on/

:ranch /"ading )alculati"n

Iflow

Irating

MVAflow

MVArating

x Vpu

x 100% Line Loading = x 100 =

MVAflow

3 x kVactual

x 1000Iflow(amp) =

MVArating

3x kVa!eIrating (amp!) = x 1000

MVAflow

MVArating% "ran!former Loading = x 100

3 x Iflow(amp!) x kVa!e

1000MVAflow

Vpu=


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PowerFlow>Reports>Limit

#$e%&in'>(utoflimit bus

volta'e

Scans workin1 case for %s

olta1es o%tside of a %ser-defined ran1e;

BUSES WITH &O'TA!E !REATER THAN 1.000:

BUS$ "- NAME -" BAS%& AREA &+PU, &+%&, BUS$ "- NAME -" BAS%& AREA &+PU, &+%&, 201 HYDRO 500.00 2 1.0400 520.00 211 HYDRO! 20.000 2 1.0404 20.)0) 011 MINE! 1.)00 5 1.0400 14.52

BUSES WITH &O'TA!E 'ESS THAN 0.(00:

BUS$ "- NAME -" BAS%& AREA &+PU, &+%&, BUS$ "- NAME -" BAS%& AREA &+PU, &+%&, 154 DOWNTN 20.00 1 0.) 215.5 20 EAST20 20.00 2 0.665 222.0 205 SUB20 20.00 2 0.40 21).2( 00( RURA' 20.00 5 0.6( 221.65 00) CATDO! 20.00 5 0.5)6 220.4) 204 SUB500 500.00 2 0.4(6 4(.)1

:us "ltage /imit )hec4ing


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enerat"r /imit )hec4ing

*enerator %s &*ENS' - S%mmari8es 1eneratin1 "lantconditions; S#ows total "lant o%t"%t at t#e %s if moret#an one mac#ine on a %s;

,ac#ine terminal &*E)(' - !e"orts indiid%al 1eneratorterminal conditions; ,%lti"le mac#ines at a %s arelisted indiid%ally;

G#en im"licit ste"-%" transformer modelin1 is %sed< *E)(works 7ackwards9 t#ro%1# t#e transformer to otain t#e

terminal conditions; C#ecks loadin1 a1ainst an ass%med reactie ca"aility c%re;


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Implicit Generator Step-Up Transformer

#"$A1

&'L $eport! ere &'* $eport! ere

Explicit Generator Step-Up Transformer

#"$A1

&'L $eport! ere &'* $eport! ere

ES S E/


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -2:

MACHINE SUMMARY +!EO',:

BUS$ "--NAME--" BAS%& ID MW M&AR MA" MIN ETERM CURRENT PF M&ABASE " T R A N !ENTAP 101 NUC-A 21.600 1 (50.0 126. 400.0 -100.0 1.0100 (5.0 0.)61 00.0 102 NUC-B 21.600 1 650.0 11.1 410.0 -110.0 1.0100 65.2 0.)52 50.0206 URB!EN 1).000 1 )00.0 2). 500.0 -400.0 1.0000 )4). 0.424 1000.0

211 HYDRO! 20.000 1 600.0 )).1 510.0 -100.0 1.0000 606.4 0.)4 (25.0 01 NORTH (65.00 1 1011.) 44.0 (60.) -5(.6 1.01 1066. 0.10 106(.0 0.0140 0.1260 1.0250 01 NORTH (65.00 2 100).6 44. ((.0 -555.0 1.02)5 106).0 0.1) 10(0.0 0.0110 0.12(0 1.0260 01 NORTH (65.00 100.6 45.6 ()5.1 -554.) 1.02)6 106.0 0.1)2 10(5.0 0.0120 0.12)0 1.02(0 401 CO!EN-1 500.00 1 21.0 142. 600.0 -100.0 1.0000 51.1 0.142 600.0402 CO!EN-2 500.00 1 21.0 142. 610.0 -110.0 1.0000 51.1 0.142 610.0

011 MINE! 1.400 1 122.( 155.2 620.0 -120.0 1.0000 11.)* 0.2 1050.001) CATDO!! 1.)00 1 400.0 -0.6 00.0 -150.0 0.00 404.0 1.0000 50.001) CATDO!! 1.)00 2 100.0 -0.2 (5.0 -(5.0 0.00 101.0 1.0000 120.0SUBSYSTEM TOTA'S )24.) 254. 64. -2(2.4 6(.0

enerat"r /imit )hec4ing ut!ut

!ENERATOR SUMMARY+!ENS,: $ MACH "---- REMOTE BUS -----"BUS$ "--NAME--" BAS%& ON/OFF TYP MW M&AR MA" MIN &SCHED &ACTUA' BUS$ "--NAME--" BAS%& M&ABAS 101 NUC-A 21.600 1 0 2 (50.0 126. 400.0 -100.0 1.0100 1.0100 00.0 102 NUC-B 21.600 1 0 2 650.0 11.1 410.0 -110.0 1.0100 1.0100 50.0 206 URB!EN 1).000 1 0 2 )00.0 2). 500.0 -400.0 1.0000 1.0000 1000.0 211 HYDRO! 20.000 1 0 2 600.0 )).1 510.0 -100.0 1.0000 1.0000 (25.0 01 NORTH (65.00 0 20.( )).6 210.0 -1)50.0 1.0000 1.0000 212.0 401 CO!EN-1 500.00 1 0 21.0 142. 600.0 -100.0 1.0000 1.0000 600.0 402 CO!EN-2 500.00 1 0 21.0 142. 610.0 -110.0 1.0000 1.0000 610.0011 MINE! 1.400 1 0 122.( 155.2 620.0 -120.0 1.0000 1.0000 1050.0

01) CATDO!! 1.)00 2 0 2 500.0 -0.) (5.0 -225.0 0.00 0.00 650.0SUBSYSTEM TOTA'S )255. 14.1 6155.0 -115.0 6(.0


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Siemens Power Academy TD NA - PSSC 525 PSSE Fast Track for Power Flow and Dynamics -2?

eactive )a!ability

Power Flow > Reports > Limit #$e%&in' >

Rea%tive %apability )*#AP+

C#eck mac#ine loadin1 a1ainst %ser-

defined ca"aility c%re;

limits from ca"aility c%re for act%al P

loadin1 in in workin1 case;

)"tion to %"date +A! limits in workin1

case; File e$tension name/ gcp.

Note/ C#eck 7%"date +A! limits in workin1

case9 for new "ower flow sol%tionsJ

CAPABLT' CURVE C"ECK*

X-- CAPABLT' CURVE --X X------- WORKN! CASE -------X BUS X- NAME -X BASKV # P!EN $!EN $MAX $MN PLMT $MAX $MN PMAX PMN

101 NUC-A 21.00 1 750.0 81.2 243.8 -37.5 900.0 00.0 -100.0 810.0 0.0

102 NUC-B 21.00 1 750.0 81.2 243.8 -37.5 900.0 00.0 -100.0 810.0 0.0

20 URB!EN 18.000 1 800.0 00.0/ 10.0 0.0 1000.0 00.0 0.0 900.0 0.0

211 "'#RO! 20.000 1 00.0 17.7 583.3 -77.8 950.0 400.0 -100.0 1.2 0.0

3011 MNE! 13.800 1 258.7 104.0 270.5 -100.0 1000.0 00.0 -100.0 900.0 0.0

3018 CAT#O!! 13.800 1 100.0 80.0 80.0 0.0 130.0 80.0 0.0 117.0 0.0


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)hec4ing E;ui!ment )"ntr"ls

!e1%lated %ses &!E*=' - (ists re1%lated %ses in t#e Gorkin1Case< incl%din1 olta1e controllin1 e%i"ment &1enerators

Documents

03-Power Flow Solution