... DYR File MODEL VERIFICATION eBook for You 49 50 MODEL VERIFICATION Gross Parameter Errors (DOCU) eBook for You Activity DOCU with data checking 51 MODEL VERIFICATION Gross Parameter Errors ... Pole Generator Model (GENSAL) Used mainly for hydro machines Typical time step: ½ cycle at 50 Hz (0.01 sec) eBook for You Represent salient pole generators at the subtransient level 17 ... (IEEEG1) Steam turbine (TGOV1) H d turbine (HYGOV) Hydro t bi eBook for You Gas turbine (GAST) 25 DYNAMIC FILE IEEE recommended general model for steam turbine and can approximate the behavior...
... = TC = TE = 1.33 KF = 0.1 TF = 0.6 75 SE[E1] = 279 0.279 SE[E2] = 0.117 E1 = 05 3. 05 E2 = 2.29 KE = 1.0 VRMAX = 4. 95 VRMIN = -4.9 eBook for You Sample data 50 EXCITER MODELS IN PSS®E DC Exciters ... rates depending on the magnitude of the voltage error eBook for You IEEET4, IEEEX4, IEEET5, IEET5A and DC3A 51 EXCITER MODELS IN PSS®E DC Exciters eBook for You IEEET4 ... high steady-state gain Typical parameters: TA = s TB = 10 s K = 200 t 400 to TE = 0. 05 s EMIN = EMAX = t 2 .5 to eBook for You SEXS 40 EXCITER MODELS IN PSS®E DC Exciters Used to represent...
... droop eBook for You TGOV1 22 GOVERNOR MODELS IN PSS®E Steam Turbine Models TGOV1 R = 0. 05 pu T1 = 0 .50 s T2/T3 = 0.3 T3 = t s to eBook for You Typical parameters: 23 GOVERNOR MODELS IN PSS®E ... GAST eBook for You Model 50 GOVERNOR MODELS IN PSS®E Gas Turbine Models GAST eBook for You Typical parameters IDENTIFICATION OF TYPICAL GOVERNORS eBook for You 51 ... The turbine damping is zero for steam, nuclear and gas turbines Its value lies between and 0 .5 p.u for hydro t bi h d turbines eBook for You Turbine-Governor Turbine Governor Data 19 EXCITER...
... we added a fixed shunt capacitor of 75 MVAR at bus • To address the low voltage at buses 4, 5, 6, 8, 9, 10, 11 and 14, we placed a fixed shunt capacitor of 1 15 MVAR at bus 10 • Why did we placed ... ANALYSIS 3-Phase Line Fault Results What can be said of the machine angles? eBook for You • 44 DYNAMIC ANALYSIS 3-Phase Line Fault Results What about the bus voltages? eBook for You • 45 DYNAMIC ... created initially? eBook for You • 42 DYNAMIC ANALYSIS Applying a 3-Phase Line Fault Run the simulation to 1s • Apply a 3-phase line fault on the line from Bus 21 to Bus 22 • Leave the fault...
... (typically 4% or 5% ) For example, a 5% droop means that a 5% frequency deviation causes 100% change in valve position or power output 10% change in load power leads to 0 .5% decrease in speed ... Overshoot: 0% to 80% eBook for You Rise time: 0.1s to 2.5s Settling time: 0.2s to 10s Simulation time: 10s [IEEE421.2-1990] 50 OVERVIEW OF SIMULATION PROCEDURE Performance Verification ... Exciter ceiling 45 OVERVIEW OF SIMULATION PROCEDURE Performance Verification Also known as Nominal Response: the rate of increase of the field voltage from rated value for a period of 0 .5 seconds...
... impractical to use in high order systems such as large scale power systems Up to 50 -100 machines maximum 50 100 Computer memory ~ n² Computing time ~ n³ p g eBook for You C Complete Ei ... damping (in 1/s) is ll d i called angular frequency (in 1/s) l f (i 1/ ) eBook for You Eigenvalue 15 SMALL-SIGNAL STABILITY eBook for You Eigenvalue 16 SMALL-SIGNAL STABILITY To ensure a stable ... are developed by the evaluation of transfer function residues eBook for You Controller Siting 25 SMALL-SIGNAL STABILITY Controller Siting eBook for You Transfer function residues 26 SMALL-SIGNAL...
... – NHABE (4 750 – 4 450 ) 418 MVA (20.2%) Low voltages at O MON below limits 21 SCENARIO Faults Three phase fault following by a trip of line O MON Three-phase – NHABE (4 750 – 4 450 ) after 100 ... line O MON – NHABE (4 750 – 4 450 ) after 100 ms (successful and unsuccessful auto-reclose) NHABE (4 750 ) Three-phase fault following by a trip of line O MON – NHABE (4 750 – 4 450 ) after 100 ms ... Three phase fault following by a trip of line Three-phase NMDHTRHC21– MYTHO C22 (50 902 – 59 052 ) after 100 ms Single-Line-to-Ground fault following by a trip of line NMDHTRHC21– MYTHO C22 (50 902...
... model the generator step-up transformers explicitly • Enter RTran = 015pu and Xtran = 125pu for all machines 0.015pu 0.125pu • These values are the step-up transformer impedance in pu on Mbase ... be any buses with voltages higher than 1. 05 pu • • There shall not be any overloads present There shall not be any buses with voltages lower than 0. 95 pu Make the M k th necessary modifications ... Therefore, add a fixed shunt capacitor of 75 MVAR at bus eBook for You • 38 LOAD FLOW ANALYSIS Correcting the voltage issues To address the low voltage at buses 4, 5, 6, 8, 9, 10, 11 and 14, another...
... Vmax to 3 .5 to solve this problem eBook for You • 24 DYNAMICS DATA VERIFICATION Initialization Errors Governors • Bus 15 Mbase= 175MVA • Pmax= Vmax*Mbase= 0. 85* 1 75= 148. 75 MW < Pinit ( 155 MW) • Therefore, ... (400MW) • Therefore, change Vmax to 1pu eBook for You • • Bus 22 • Mbase= 775MVA • Pmax= Vmax*Mbase= 0. 85* 7 75= 658 . 75 MW < Pinit (660MW) • Therefore, change Vmax to 1pu 26 DYNAMICS DATA VERIFICATION ... eBook for You • 51 DYNAMIC ANALYSIS OF 3-PHASE FAULTS Applying a 3-Phase pp y g Line Fault Run the simulation to 1s • We will apply a 3-phase line h li fault on the line from Bus 15 to Bus 24 •...
... 00] [A 138.00] 13 [A 230.00] 15 [A [ 230.00] ] 16 [A 230.00] 18 [A 230.00] 21 [A 230.00] 22 [A 230 00] 230.00] 23 [A 230.00] KA 50 0 50 0 00 50 0 200 200 200 200 200 50 0 200 KE or zero 0 1 1 1 KF ... Model t i l l 17 IEEE 24 – LONG TERM STABILITY Steam Turbine and Boiler TGOV5 eBook for You Typical data for TGOV5 18 IEEE 24 – LONG TERM STABILITY Underfrequency Load Shedding q y g Models ... (loads and generators) t ) Prepare for transient simulation and choose the following channels 25 IEEE 24 – LONG TERM STABILITY eBook for You Long-Term Long Term Voltage Stability IEEE 24 – SMALL...
... >>>print str1[0] # Prints first character of the string H d >>>print str1[2 :5] # Prints characters starting from 3rd to 5th llo >>>print str1[2:] # Prints string starting from 3rd character llo ... Block repeatedly executed for a defined number of times 50 CONTROL FLOW TOOLS Loops For loop statements eBook for You Examples 51 CONTROL FLOW TOOLS Loops Break statements eBook for You ... concatenated string Hello World!TEST eBook for You Set of characters between quotation marks 25 VARIABLES Most versatile of Python’s compound data types A list contains items separated by...
... impedance in three-phase ac systems from ASCC_2 API Results are returned for bus ASCC API faults only IECS currents: Return short-circuit currents and Thevenin impedance in three-phase ac systems ... eBook for You Short-circuit studies 50 RESULTS DATA RETRIEVAL MODULE PSSARRAYS ASCC currents: Return short-circuit currents and Thevenin impedance in three-phase ac systems from ASCC_2 API Results ... and Thevenin impedance in three-phase ac systems according to IEC 60909 standard Results are returned for bus faults only eBook for You Short-circuit studies 51 RESULTS DATA RETRIEVAL MODULE...
... complete X equivalent The result is Base: 100 MVA X 0.0 251 8 pu X 0.0 252 5 pu X 0.04389 pu eBook for You Short-circuit levels Sh t i it l l 25 REDUCED POWER SYSTEM Vietnamese Power System In ... impedances 1 X machine X complete X equivalent The result is Base: 100 MVA X 0.0 251 8 pu X 0.0 252 5 pu X 0.04389 pu eBook for You Short-circuit levels Sh t i it l l 26 REDUCED POWER SYSTEM ... does not exceed 5% In the original system, disconnect all lines with the boundary buses except for the ties with the y p external system and calculate the short-circuit level in MVA 5 In the reduced...
... Select only the 50 0kV buses eBook for You • 44 SHORT-CIRCUIT ANALYSIS (Flat pre-fault conditions) diti ) eBook for You Short Circuit Short-Circuit Results for the 50 0kV Buses 45 SHORT-CIRCUIT ... ANALYSIS Limit Checking Reports Verify if there are any voltage violations at the 50 0kV y y g level eBook for You • 15 LOAD FLOW ANALYSIS Limit Checking Reports Verify if there are any voltage violations ... CONTINGENCY ANALYSIS Contingencies causing non-convergence For the loss of line from Bus 52 002 to Bus 52 062, we could build , an SLD to analyze the situation • Note that there is only one line...
... THE TEST SYSTEM eBook for You INTRODUCTION TO THE TEST SYSTEM Input files • Day5_savnw.sav • Day5_savnw.sld • D Day5_savnw.dyr d eBook for You The fil Th files required to perform today’s i dt ... If other ovelroads appear, it is because the sld file is set to flag loadings >90% cejaf, 2013/ 05/ 15 eBook for You c1 EXAMPLE - DYNAMIC SIMULATION SETUP eBook for You 12 13 DYNAMIC SIMULATION SETUP ... information • 23 bus system • System divided in areas: FLAPCO • LIGHTCO • WORLD • Voltage levels: 50 0kV, 230kV, 21.6kV, 20kV, 18kV, and 13.8kV • No motors present • Generators, fixed shunts, passive...
... CIRCUIT Three Phase Fault Three Phase Fault Z1 E F1 Z2 F2 Z0 F0 eBook for You E I1 = , I2 = , I0 = Z1 19 ANALYSIS OF SHORT-CIRCUIT CONDITIONS SHORT CIRCUIT I1 = I2 = I0 = IB = IC = Phase to Phase Fault ... + Z2 + Z Phase to Phase to Ground Fault I1 = ( Z + Z )E Z 1Z + Z 2Z + Z Z I2 = ‐ Z 0E Z1Z + Z 2Z + Z Z ‐ Z 2E I0 = Z1Z + Z 2Z + Z Z eBook for You Single Phase to Ground Fault Single Phase to ... Any given set of Unbalanced Three-phase Vectors Three phase can be represented by the sum of three sets of Balanced or Symmetrical vectors RELATIONSHIPS BETWEEN PHASE VECTORS & SEQUENCE COMPONENTS...