Description of the PTI Load Flow Data Format ============================================ Note that PTI reserves the right to change the format at any time. For use with the IEEE 300 bus test case in PTI format. Case Identification Data ======================== First record: IC,SBASE IC - 0 for base case, 1 for change data to be added SBASE - System MVA base Records 2 and 3 - two lines of heading, up to 60 characters per line Bus Data ======== Bus 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 3 - Swing bus 4 - Islolated bus PL - Load MW QL - Load MVAR GL - Shunt conductance, MW at 1.0 per unit voltage BL - Shunt susceptance, MVAR at 1.0 per unit voltage. (- = reactor) IA - Area number, 1-100 VM - Voltage magnitude, per unit VA - Voltage angle, degrees NAME - Bus name, 8 characters, must be enclosed in quotes BASKV - Base voltage, KV ZONE - Loss zone, 1-999 Generator Data ============== Generator data records, terminated by a generator with an index of zero. I,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 QG - MVAR output QT - Max MVAR QB - Min MVAR 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. ZR,ZX - Machine impedance, pu on MBASE RT,XT - Step up transformer impedance, p.u. on MBASE GTAP - Step up transformer off nominal turns ratio STAT - Machine status, 1 in service, 0 out of service RMPCT - Percent of total VARS required to hold voltage at bus IREG to come from bus I - for remote buses controlled by several generators PT - Max MW PB - Min MW Branch Data =========== Branch records, ending with a record with from bus of zero I,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 RATIO - Transformer off nominal turns ratio ANGLE - Transformer phase shift angle GI,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 =========================== Ends with record with from bus of zero I,J,CKT,ICONT,RMA,RMI,VMA,VMI,STEP,TABLE I - From bus number J - To bus number CKT - Circuit number ICONT - Number of bus to control. If different from I or J, sign of ICONT determines control. Positive sign, close to impedance (untapped) bus of transformer. Negative sign, opposite. RMA - Upper limit of turns ratio or phase shift RMI - 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 STEP - Turns ratio step increment TABLE - Zero, or number of a transformer impedance correction table 1-5 Area Interchange Data ===================== Ends with I of zero I,ISW,PDES,PTOL,'ARNAM' I - Area number (1-100) ISW - Area interchange slack bus number PDES - Desired net interchange, MW + = out. PTOL - Area interchange tolerance, MW ARNAM - Area name, 8 characters, enclosed in single quotes. DC Line Data ============ Ends with I of zero Each DC line has three consecutive records I,MDC,RDC,SETVL,VSCHD,VCMOD,RCOMP,DELTI,METER IPR,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 MDC - Control mode 0 - blocked 1 - power 2 - current RDC - Resistance, ohms SETVL - Current or power demand VSCHD - 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 METER - Metered end code, R - rectifier I - Inverter IPR - Rectifier converter bus number NBR - Number of birdges is series rectifier ALFMAX - Maximum rectifier firing angle, degrees ALFMN - Minimum rectifier firing angle, degrees RCR - Rectifier commutating transformer resistance, per bridge, ohms XCR - Rectifier commutating transformer reactance, per bridge, ohms EBASR - Rectifier primary base AC volts, KV TRR - Rectifier transformer ratio TAPR - Rectifier tap setting TPMXR - Maximum rectifier tap setting TPMNR - Minimum rectifier tap setting TSTPR - Rectifier tap step Third record contains inverter quantities corresponding to rectifier quantities above. Switch Shunt Data ================= Ends with I = 0. I,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 SWREM - Number of remote bus to control. 0 to control own bus. VDES - Desired voltage setpoint, per unit BINIT - Initial switched shunt admittance, MVAR at 1.0 per unit volts N1 - Number of steps for block 1, first 0 is end of blocks B1 - Admittance increment of block 1 in MVAR at 1.0 per unit volts. N2, B2, etc, as N1, B1