IEEE PSAP PTI data format

seanchio

Partial Description of the IEEE Common Data Format for the   
: i2 J5 H3 P# p6 Q5 gExchange of Solved Load Flow Data
$ n/ @+ {+ G  B" TThe complete description can be found in the paper "Common Data
+ N% n- d' X+ G) y: U2 V3 dFormat for the Exchange of Solved Load Flow Data", Working Group on a
; G' q( c& R2 x$ V; RCommon Format for the Exchange of Solved Load Flow Data, _IEEE
Transactions on Power Apparatus and Systems_, Vol. PAS-92, No. 6,
4 c/ R1 J& G" ?' A) `$ dNovember/December 1973, pp. 1916-1925.
7 v  X. g- u+ T! C8 [3 {The data file has lines of up to 128 characters. The lines are grouped
/ e, ^1 O: H, m4 Hinto sections with section headers. Data items are entered in specific
, E: l* b% W3 a/ ?columns. No blank items are allowed, enter zeros instead. Floating point
items should have explicit decimal point. No implicit decimal points
are used.
8 F3 C: h/ Q& x+ I; }; oData type codes: A - Alphanumeric (no special characters)
4 v  c3 h4 Z  H* F% s  e2 Q                 I - Integer
                 F - Floating point
/ E& E6 C( F) D+ E/ }1 ?                 * - Mandatory item
2 N' L6 m2 F, E. @1 TTitle Data
6 e7 p8 `) m' k! Y7 g! p==========
First card in file.
Columns  2- 9   Date, in format DD/MM/YY with leading zeros. If no date
; Z- q" n! p5 ~$ }  v" k2 Z8 v                provided, use 0b/0b/0b where b is blank.
+ b$ P; U1 Q5 m& P+ nColumns 11-30   Originator's name (A)
Columns 32-37   MVA Base (F*)
Columns 39-42   Year (I)
Column  44      Season (S - Summer, W - Winter)
Column  46-73   Case identification (A)
Bus Data *
" y$ e6 e7 t( L' G==========
Section start card *:
---------------------
Columns  1-16   BUS DATA FOLLOWS (not clear that any more than BUS in
1 L4 Z. ^7 N# s$ y, N* f                1-3 is significant) *
# R: p# B/ U) oColumns  ?- ?   NNNNN ITEMS (column not clear, I would not count on this)
Bus data cards *:
8 D' @4 Q% t7 l+ N* t7 i' V6 T9 l-----------------
; N; ?. v6 Q& y) i- u8 d9 K/ ^Columns  1- 4   Bus number (I) *
Columns  7-17   Name (A) (left justify) *
6 j( {- e" @- }# X1 |8 {& a& GColumns 19-20   Load flow area number (I) Don't use zero! *
Columns 21-23   Loss zone number (I)
Columns 25-26   Type (I) *
                 0 - Unregulated (load, PQ)
8 @' J/ |* X+ e' e                 1 - Hold MVAR generation within voltage limits, (PQ)
                 2 - Hold voltage within VAR limits (gen, PV)
                 3 - Hold voltage and angle (swing, V-Theta) (must always
& n3 p5 ^* u' Y3 x9 C9 b* o. w                      have one)
* I) X7 e; J4 o; e; aColumns 28-33   Final voltage, p.u. (F) *
# J2 N: o- ^" y. _5 HColumns 34-40   Final angle, degrees (F) *
! K+ Z* p& e8 n9 p% f8 r; h* fColumns 41-49   Load MW (F) *
. x+ r9 r9 ~" h$ t$ hColumns 50-59   Load MVAR (F) *
Columns 60-67   Generation MW (F) *
Columns 68-75   Generation MVAR (F) *
& j- f0 E" B7 R4 g1 \: ^Columns 77-83   Base KV (F)
/ _! b; B# c: W$ o# ?Columns 85-90   Desired volts (pu) (F) (This is desired remote voltage if
2 J3 h5 x* F' e2 Q1 n' a, G                this bus is controlling another bus.
  n" e/ H: \" `. HColumns 91-98   Maximum MVAR or voltage limit (F)
Columns 99-106  Minimum MVAR or voltage limit (F)
Columns 107-114 Shunt conductance G (per unit) (F) *
Columns 115-122 Shunt susceptance B (per unit) (F) *
1 E, e! e! R. H: y8 h0 ^+ b* cColumns 124-127 Remote controlled bus number
Section end card:
-----------------
Columns  1- 4   -999
- ~" n9 k+ y" h3 L9 {. v6 k& @: L7 S3 HBranch Data *
: c3 t- o. y# `9 F' }=============
& Z# l2 P& ]1 k2 z! ?4 l( q2 wSection start card *:
5 B: a0 E2 R" ^; y+ B---------------------
Columns  1-16   BRANCH DATA FOLLOWS (not clear that any more than BRANCH
+ |' k7 E1 x2 K9 ]                is significant) *
Columns 40?- ?  NNNNN ITEMS (column not clear, I would not count on this)
' S' C- D$ o2 a( r0 ^  ^( iBranch data cards *:
& J/ i- T% v0 c--------------------
) @' F$ l1 O% T- BColumns  1- 4   Tap bus number (I) *
4 n# ]2 L- s) {! A) ~                 For transformers or phase shifters, the side of the model
; e9 K' T8 F& Q8 V( q                 the non-unity tap is on
Columns  6- 9   Z bus number (I) *
; a8 l7 j" P! i$ I$ C                 For transformers and phase shifters, the side of the model
                 the device impedance is on.
  l$ u0 n1 o, M8 Y5 }" _: k; j" VColumns 11-12   Load flow area (I)
. _4 U. e- E# }& k) eColumns 13-14   Loss zone (I)
, U# C9 G/ p) p8 oColumn  17      Circuit (I) * (Use 1 for single lines)
. Q' j( @/ a' B( a4 SColumn  19      Type (I) *
% k3 `# Y( a) H+ u6 G$ g                 0 - Transmission line
                 1 - Fixed tap
                 2 - Variable tap for voltage control (TCUL, LTC)
8 O5 u" z. l9 M+ N- f" v0 c* K                 3 - Variable tap (turns ratio) for MVAR control
# ^7 J4 Q8 k% O+ v0 m8 J& ^' q                 4 - Variable phase angle for MW control (phase shifter)
6 Q- ?' @5 R2 S# oColumns 20-29   Branch resistance R, per unit (F) *
Columns 30-40   Branch reactance X, per unit (F) * No zero impedance lines
Columns 41-50   Line charging B, per unit (F) * (total line charging, +B)
6 M* f" V" z5 ^1 i9 g" mColumns 51-55   Line MVA rating No 1 (I) Left justify!
7 P! S7 [* O2 gColumns 57-61   Line MVA rating No 2 (I) Left justify!
Columns 63-67   Line MVA rating No 3 (I) Left justify!
Columns 69-72   Control bus number
) C% T+ k& f! @9 j4 b; K5 qColumn  74      Side (I)
                 0 - Controlled bus is one of the terminals
* B! {, ]/ |& K1 X                 1 - Controlled bus is near the tap side
- K: J3 V9 L" X" N% v                 2 - Controlled bus is near the impedance side (Z bus)
Columns 77-82   Transformer final turns ratio (F)
Columns 84-90   Transformer (phase shifter) final angle (F)
Columns 91-97   Minimum tap or phase shift (F)
; w, k2 G9 u9 E) x! T# SColumns 98-104  Maximum tap or phase shift (F)
  E9 @% z. L/ bColumns 106-111 Step size (F)
Columns 113-119 Minimum voltage, MVAR or MW limit (F)
) a* i+ J5 t& j7 U2 zColumns 120-126 Maximum voltage, MVAR or MW limit (F)
7 S- y$ g* S% F; j! o$ KSection end card:
-----------------
- x: M$ ~( z& C4 z$ y0 wColumns  1- 4   -999
Loss Zone Data
==============
/ z# m3 i& N  r6 ?Section start card
------------------
Columns  1-16   LOSS ZONES FOLLOWS (not clear that any more than LOSS
                is significant)
' q! C7 [+ i* }" L) _9 `Columns 40?- ?  NNNNN ITEMS (column not clear, I would not count on this)
$ p! F  f7 g& HLoss Zone Cards:
----------------
# g9 L& J6 Q' x( G7 W4 N- `8 WColumns  1- 3   Loss zone number  (I)
Columns  5-16   Loss zone name (A)
% w3 M% w" `, x7 M) K& t3 ISection end card:
-----------------
& L6 O, s6 y/ F0 V7 `( rColumns  1- 3   -99
" F  {) N% y$ b- |" [0 a/ DInterchange Data *
==================
Section start card
------------------
Columns  1-16   INTERCHANGE DATA FOLLOWS (not clear that any more than
                first word is significant).
1 e* K7 K% {& aColumns 40?- ?  NNNNN ITEMS (column not clear, I would not count on this)
( i2 i  u5 s2 x# c5 i9 RInterchange Data Cards *:
& b- ?& i+ U' f% _6 @- m) ?$ F6 y-------------------------
$ ]( d; x" A$ W+ [, I4 i3 NColumns  1- 2   Area number (I) no zeros! *
Columns  4- 7   Interchange slack bus number (I) *
8 g$ d. H+ n  ~$ b' W: v( h# p( i9 G3 mColumns  9-20   Alternate swing bus name (A)
5 I+ |3 P0 C* p% qColumns 21-28   Area interchange export, MW (F) (+ = out) *
' a) T) f4 U, y+ g" A! oColumns 30-35   Area interchange tolerance, MW (F) *
( b! ~4 W+ \1 j8 p, cColumns 38-43   Area code (abbreviated name) (A) *
Columns 46-75   Area name (A)
Section end card:
-----------------
+ d/ d2 d( N& e, U1 f# t; TColumns  1- 2   -9
Tie Line Data
; P8 N% k7 R2 }; \( d, a=============
* W9 B( o9 e+ Y/ c3 DSection start card
------------------
: n- ]9 X5 p* i) c: C( X1 ~Columns  1-16   TIE LINES FOLLOW (not clear that any more than TIE
                is significant)
- y# T2 C0 n8 v3 {( q0 U4 ^3 G4 tColumns 40?- ?  NNNNN ITEMS (column not clear, I would not count on this)
Tie Line Cards:
---------------
. T# k* s3 N' j! G. s- v$ }8 o; iColumns  1- 4   Metered bus number (I)
Columns  7-8    Metered area number (I)
; W9 ]; Y2 H) \6 b9 X- [Columns  11-14  Non-metered bus number (I)
* F% D2 y  B- C/ l0 Y) a  I7 x3 ^Columns  17-18  Non-metered area number (I)
: ~2 a& r+ B$ H9 [1 F/ BColumn   21     Circuit number
Section end card:
-----------------
% c! p. z, X- d% F: AColumns  1- 3   -999
6 g, o( c; R+ u& @END OF DATA

, J! V) @% w& M8 L( hPSAP File Format
, v  Q% n- w+ R- v* k! K: pMay 20, 1993
The PECO PSAP File Format is fully described in the _PJM Power System
1 H  Q) T& u6 a0 g4 J- CAnalysis Package Use's Guide_, available from the Philadelphia
Electric Company. The following is a rough description of the
most important parts of the format.
( R6 }# U2 R- R7 VA PSAP data file is divided into sections by code cards. The code is
* k* m8 Z' b' j5 G# ?in the first three columns. There are something like 60 codes, of
' ^; ~( c' L$ h$ K8 q( ~- Y  g) kwhich only four are described in this document.
5 S5 y6 I% a! R8 S! w3 d- RThe 1 code indicates that the next card is the case title. Only one
  q2 s% z! J8 l1 n- W/ U1 L4 Qtitle is allowed per case.
& X' G/ K0 U, m7 D; i6 e: QThe 4 card indicates that line data follows. The line data ends with
a 9999 card.
; e8 i+ Z) |: _9 s2 CThe 5 card indicates that bus data follows. The bus data ends with
a 9999 card.
  \- K1 o1 U# P) u  U' A% C* z0 WThe 15 card indicates that area interchange data follows. The data ends with
" I0 s7 k& O+ U; G: q- Ua 9999 card.
* \- h- W( A) _# ?7 FLine Data Card (Code 4 cards)
=============================
Cols    Data
0 S" r8 W0 [7 t5 R5 C1-4     From bus number
1 c7 ^7 {' C% h1 T6       Change code (blank in 4 section)
+ }! `2 M5 H+ w( w( {7       'C' if second card present for same line. Used for transformers.
, U9 s# t$ R  |3 n/ V9-12    To bus number
14      Circuit number (blank in 4 section)
1 T$ k" s0 S, |; z) a, G1 Y16      'T' or 'F' - Load flow area of bus at this end of line gets losses.
18-23   Line resistance in percent of base. (NOT per unit.)
6 g2 I( f' l2 ~9 D5 k  b+ ?2 B5 _        (percent = 100 x per unit) Two default decimal places.
24-29   Line reactance, in percent. Two default decimal places.
: F/ W0 @+ b! C$ S6 {  h- L- N30-35   Line charging MVAR (total). Three default decimal places.
36-40   Transformer tap (per unit turns ratio). Three default decimal
        places, 1000 = 1.000.
41-45   Min tap, for OLTC. Three default decimal places.
" i& A, G0 U9 h3 L: e3 B' l46-50   Max tap, for OLTC. Three default decimal places.
( _: J' s  f0 Z# Q4 W51-55   Phase shift angle, for OL phase shifter. Two default decimal places.
56-60   Remote voltage control bus number. Negative if lower tap increases
" h+ ~9 f9 P: z* J. B! V9 E! `        voltage of this bus.
# H/ [' t) {$ B61-64   Normal MVA rating
65-68   Emergency MVA rating
69-72   MVA Base. Default value 100 MVA if blank.
Second Line Card (follows 'C' in first card)
============================================
1-17    Same as first card, except no 'C'. Can be left blank.
35-40   Desired MVAR flow or Min voltage setpoint for OLTC.
; r0 j$ t' {5 u4 `* ]& L41-45   Min phase shifter degrees. Two default decimal places.
46-50   Max phase shifter degrees. Two default decimal places.
& \1 O% W3 Q0 I3 z9 C51-55   Desired MW flow for phase shifter.
57-60   Controlled line from bus.
- j! `7 v+ r4 W" q62-65   Controlled line to bus.
' ^4 p9 E# @) o: l+ Z$ s) f67-70   Available taps (number of taps)
5 P6 X& G5 Y6 m, |9 F$ J( E, a71-75   Maximum voltage setpoint. Three default decimal places.
Bus Cards (Code 5 cards)
/ X6 \2 j8 B& M" z5 _% ]========================
, S  k: J3 v# R2 W1-4     Bus number
/ y: \2 Z& n7 x$ ]6       Change code (blank in 5 section)
7       Continue code (blank in 5 section)
8       Regulated bus code:
8 R5 Q1 B+ ?$ u+ B$ c; L0 g; Y         Blank - load (PQ) bus
         1     - gen (PV) bus
4 W9 K  T5 i/ [+ v         2     - swing (V-Theta) bus
10-21   Name
23-26   Bus voltage (control setpoint or solved value).
        Three default decimal places.
27-30   Bus angle
31-35   Generation MW
9 s6 T9 Z, P# D* r36-40   Generation MVAR (from solution)
8 {  |: m* x3 T" w" j- N2 F2 K- }41-45   Generation MVAR low limit
46-50   Generation MVAR high limit
51-55   Bus at which generation controls voltage
56-60   Load MW
61-65   Load MVAR
) j$ f+ S9 o7 O% G1 Z66-70   Shunt MVAR. Reactors are minus.
71-72   Load flow area. (Used for area interchange and losses).
Area Interchange Cards (Code 15 cards)
5 g/ H8 U' n1 s6 g======================================
3-4     Load flow area number
2 f' R6 o5 X5 e3 v  F8 k- x/ M2 J5-8     Swing bus for area interchange. Adjusts generation at this bus
        to meet area interchange requirement.
$ O2 g/ ^) b5 f7 D- O: `6 o: y4 t9-14    Area exports, MW. (+ = out of area)
15-19   Area Interchange tolerance, MW
20-55   Area name
56-60   Area load (usually left blank)
- }/ w- @5 A( a% }1 }61-65   Area losses (usually left blank)



Description of the PTI Load Flow Data Format
============================================
. a" g7 Y$ e; h7 y0 NNote that PTI reserves the right to change the format at any time.
For use with the IEEE 300 bus test case in PTI format.
4 ]& k% k" N4 T% v# Y0 i2 t! gCase Identification Data
3 R1 i# Y( e: [========================
( ^2 o. C& l( tFirst record: IC,SBASE
2 V9 g' ]3 |3 e IC - 0 for base case, 1 for change data to be added
. ^. Z1 [- |; I6 Z8 } SBASE - System MVA base
' U( B5 m: E- m& l/ WRecords 2 and 3 - two lines of heading, up to 60 characters per line
3 t6 v" C( L0 o' TBus Data
- p( R/ B: K' J2 s/ q! n) ?+ e/ z8 D& \. {  O========
1 S2 Z# M/ q/ R7 a, \0 QBus data records, terminated by a record with a bus number of zero.
I,IDE,PL,QL,GL,BL,IA,VM,VA,'NAME',BASKL,ZONE
I - Bus number (1 to 29997)
IDE - Bus type
        1 - Load bus (no generation)
        2 - Generator or plant bus
' f; m& L! G* R: `2 f: B        3 - Swing bus
( E! y0 ]/ @/ [7 @1 |5 j0 w+ D% D        4 - Islolated bus
: n# l. i5 ?; h' r PL - Load MW
QL - Load MVAR
9 k6 T( E6 D- M0 {& _% o$ M GL - Shunt conductance, MW at 1.0 per unit voltage
! a  H% V$ c8 J& Y3 r/ T8 u: I0 ] BL - Shunt susceptance, MVAR at 1.0 per unit voltage. (- = reactor)
IA - Area number, 1-100
VM - Voltage magnitude, per unit
* J; T1 F. r3 Y' {4 r% H& G/ e VA - Voltage angle, degrees
NAME - Bus name, 8 characters, must be enclosed in quotes
BASKV - Base voltage, KV
' u: n4 O6 J" h! b  c  o3 P ZONE - Loss zone, 1-999
Generator Data
==============
Generator data records, terminated by a generator with an index of zero.
  |9 f' Z. l5 i0 i$ p( ^- pI,ID,PG,QG,QT,QB,VS,IREG,MBASE,ZR,ZX,RT,XT,GTAP,STAT,RMPCT,PT,PB
I - Bus number
ID - Machine identifier (0-9, A-Z)
PG - MW output
1 @6 a% M6 _! U4 f* N  T# UQG - MVAR output
QT - Max MVAR
0 E% v; S1 L4 M7 h( m% Z8 g* pQB - Min MVAR
: a" V- g+ p& d# l8 W' `VS - Voltage setpoint
IREG - Remote controlled bus index (must be type 1), zero to control own
voltage, and must be zero for gen at swing bus
MBASE - Total MVA base of this machine (or machines), defaults to system
MVA base.
5 `: o5 }' @5 i& x# x* CZR,ZX - Machine impedance, pu on MBASE
RT,XT - Step up transformer impedance, p.u. on MBASE
" v+ Y" D0 u1 D1 P6 @GTAP - Step up transformer off nominal turns ratio
STAT - Machine status, 1 in service, 0 out of service
& i% F1 g" A$ d, x/ Z: a5 xRMPCT - Percent of total VARS required to hold voltage at bus IREG
to come from bus I - for remote buses controlled by several generators
5 X6 \) m$ ]8 D/ Q" yPT - Max MW
PB - Min MW
Branch Data
===========
Branch records, ending with a record with from bus of zero
& R: k7 h6 R  A1 @8 GI,J,CKT,R,X,B,RATEA,RATEB,RATEC,RATIO,ANGLE,GI,BI,GJ,BJ,ST
I - From bus number
J - To bus number
CKT - Circuit identifier (two character) not clear if integer or alpha
R - Resistance, per unit
X - Reactance, per unit
B - Total line charging, per unit
RATEA - MVA rating A
RATEB, RATEC - Higher MVA ratings
* a; l% E3 ]# MRATIO - Transformer off nominal turns ratio
ANGLE - Transformer phase shift angle
% Q0 `# G; d! m* DGI,BI - Line shunt complex admittance for shunt at from end (I) bus, pu.
GJ,BJ - Line shunt complex admittance for shunt at to end (J) bus, pu.
ST - Initial branch status, 1 - in service, 0 - out of service
Transformer Adjustment Data
+ y5 A0 V7 k( R7 ]5 T9 y9 p) G; h===========================
2 P3 r. H( `5 ^1 w2 L7 ~Ends with record with from bus of zero
: x  D: f% G: B/ R7 VI,J,CKT,ICONT,RMA,RMI,VMA,VMI,STEP,TABLE
1 o8 C7 h: G/ U% W/ OI - From bus number
J - To bus number
1 e: [, E9 v4 P6 \- M8 e) j7 DCKT - Circuit number
: {- Z1 K( }0 GICONT - Number of bus to control. If different from I or J, sign of ICONT
determines control. Positive sign, close to impedance (untapped) bus
, [( L5 n# O. X5 W) O4 D0 b- Y of transformer. Negative sign, opposite.
RMA - Upper limit of turns ratio or phase shift
; A5 W6 p6 @- P( TRMI - Lower limit of turns ratio or phase shift
VMA - Upper limit of controlled volts, MW or MVAR
VMI - Lower limit of controlled volts, MW or MVAR
9 t: h  k! ]: Z# i) G. `STEP - Turns ratio step increment
" ?3 f2 _: n1 UTABLE - Zero, or number of a transformer impedance correction table 1-5
Area Interchange Data
/ T# X: [, Z9 e=====================
  z- V1 E- C5 T3 x& Q* }7 ?Ends with I of zero
) S' X( r3 K- q. N" _5 J$ uI,ISW,PDES,PTOL,'ARNAM'
( g8 F4 s8 f" z' R, RI - Area number (1-100)
+ [7 b. a% f/ V7 x/ r: v; rISW - Area interchange slack bus number
PDES - Desired net interchange, MW + = out.
8 j3 p$ ~$ A8 w- Y: l& y, zPTOL - Area interchange tolerance, MW
ARNAM - Area name, 8 characters, enclosed in single quotes.
DC Line Data
- Z3 p& f  _8 x1 Q8 I6 {" P) t============
Ends with I of zero
Each DC line has three consecutive records
+ m+ Q2 o  T2 I  {9 B6 qI,MDC,RDC,SETVL,VSCHD,VCMOD,RCOMP,DELTI,METER
( s$ D  W  o3 P7 r! P" W- P$ hIPR,NBR,ALFMAX,ALFMN,RCR,XCR,EBASR,TRR,TAPR,TPMXR,TPMNR,TSTPR
IPI,NBI,GAMMX,GAMMN,RCI,XCI,EBASI,TRI,TAPI,TPMXI,TPMNI,TSTPI
I - DC Line number
5 K' q, V& X% q, vMDC - Control mode 0 - blocked 1 - power 2 - current
# N( v  M3 a3 i! N- q  NRDC - Resistance, ohms
SETVL - Current or power demand
+ J5 I8 {+ ]( JVSCHD - Scheduled compunded DC voltage, KV
VCMOD - Mode switch DC voltage, KV, switch to current control mode below this
RCOMP - Compounding resistance, ohms
DELTI - Current margin, per unit of desired current
. @# V$ z4 k0 i0 I! t' f! BMETER - Metered end code, R - rectifier I - Inverter
: w7 n  v" O5 J1 R+ n$ U% a! }IPR - Rectifier converter bus number
NBR - Number of birdges is series rectifier
3 K" @  E9 Q" v  q8 XALFMAX - Maximum rectifier firing angle, degrees
& ?- l/ F; F" i2 gALFMN - Minimum rectifier firing angle, degrees
1 ~! a: d* x2 e" Z. {; _# ORCR - Rectifier commutating transformer resistance, per bridge, ohms
XCR - Rectifier commutating transformer reactance, per bridge, ohms
0 G9 k8 ?2 w: i8 N9 nEBASR - Rectifier primary base AC volts, KV
) `9 e2 f; F1 X( {9 ]) TTRR - Rectifier transformer ratio
) g; h7 v& p6 _5 i8 Z8 w1 {" UTAPR - Rectifier tap setting
TPMXR - Maximum rectifier tap setting
2 x0 ^$ W4 I5 I' @* L) K, qTPMNR - Minimum rectifier tap setting
TSTPR - Rectifier tap step
Third record contains inverter quantities corresponding to rectifier
quantities above.
) A; y  u, p) u0 |Switch Shunt Data
=================
, r$ p0 d* E- R7 UEnds with I = 0.
1 [' ]( j0 d/ u$ I3 `; d2 GI,MODSW,VSWHI,VSWLO,SWREM,BINIT,N1,B1,N2,B2...N8,B8
I - Bus number
MODSW - Mode 0 - fixed 1 - discrete 2 - continuous
VSWHI - Desired voltage upper limit, per unit
VSWLO - Desired voltage lower limit, per unit
+ s: S& P4 ~) i" N; uSWREM - Number of remote bus to control. 0 to control own bus.
VDES - Desired voltage setpoint, per unit
2 J, N3 z) `1 T3 `* |7 lBINIT - Initial switched shunt admittance, MVAR at 1.0 per unit volts
# `, i4 ^9 @$ b/ hN1 - Number of steps for block 1, first 0 is end of blocks
8 i& m# _8 c8 ^7 q& jB1 - Admittance increment of block 1 in MVAR at 1.0 per unit volts.
/ z  |2 @* s: [$ H0 ~3 ?( ^& `+ xN2, B2, etc, as N1, B1

fellowieee

http://www.ee.washington.edu/research/pstca/index.html