📄 power_compensated.mdl
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Orientation "up"
NamePlacement "alternate"
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Series RLC Load"
SourceType "Series RLC Load"
PhysicalDomain "powersysdomain"
SubClassName "unknown"
LeftPortType "p1"
RightPortType "p1"
LConnTagsString "a"
RConnTagsString "__new0"
NominalVoltage "735000/sqrt(3)"
NominalFrequency "60"
ActivePower "110e6/300"
InductivePower "110e6"
CapacitivePower "0"
Setx0 off
InitialVoltage "0"
SetiL0 off
InitialCurrent "0"
Measurements "None"
}
Block {
BlockType Reference
Name "110 Mvar2"
Ports [0, 0, 0, 0, 0, 1, 1]
Position [480, 185, 510, 245]
Orientation "up"
NamePlacement "alternate"
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Series RLC Load"
SourceType "Series RLC Load"
PhysicalDomain "powersysdomain"
SubClassName "unknown"
LeftPortType "p1"
RightPortType "p1"
LConnTagsString "a"
RConnTagsString "__new0"
NominalVoltage "735000/sqrt(3)"
NominalFrequency "60"
ActivePower "110e6/300"
InductivePower "110e6"
CapacitivePower "0"
Setx0 off
InitialVoltage "0"
SetiL0 off
InitialCurrent "0"
Measurements "None"
}
Block {
BlockType Reference
Name "150 km"
Ports [0, 0, 0, 0, 0, 1, 1]
Position [235, 116, 310, 144]
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Distributed Parameters Line"
SourceType "Distributed Parameters Line"
ShowPortLabels "FromPortIcon"
SystemSampleTime "-1"
FunctionWithSeparateData off
RTWMemSecFuncInitTerm "Inherit from model"
RTWMemSecFuncExecute "Inherit from model"
RTWMemSecDataConstants "Inherit from model"
RTWMemSecDataInternal "Inherit from model"
RTWMemSecDataParameters "Inherit from model"
Phases "1"
Frequency "60"
Resistance "0.011"
Inductance "0.8674e-03"
Capacitance "13.41e-09"
Length "150"
x1 "[0 -120756.710653004;0.000102316423901542 -9790"
"8.8741896865;0.000204632847803084 -74915.3841500986;0.000306949271704625 -518"
"10.4466680859;0.000409265695606167 -28628.4336716439;0.000511582119507709 -54"
"03.83174971574]"
x2 "[0 -136848.367282306;0.000102316423901542 -1135"
"13.005926544;0.000204632847803084 -90008.777597249;0.000306949271704625 -6637"
"0.6482251605;0.000409265695606167 -42633.7829381371;0.000511582119507709 -188"
"33.493747956]"
x3 "[0 -959.074297245775;0.000102316423901542 -883."
"429401106842;0.000204632847803084 -806.470276275991;0.000306949271704625 -728"
".311410554772;0.000409265695606167 -649.069076532403;0.000511582119507709 -56"
"8.86115861352]"
x4 "[0 -501.015869720464;0.000102316423901542 -399."
"38577999001;0.000204632847803084 -297.161546289988;0.000306949271704625 -194."
"495241916543;0.000409265695606167 -91.5395978097266;0.000511582119507709 11.5"
"522246558104]"
x5 "0.000511582119507709"
Measurements "None"
}
Block {
BlockType Reference
Name "150 km1"
Ports [0, 0, 0, 0, 0, 1, 1]
Position [410, 126, 485, 154]
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Distributed Parameters Line"
SourceType "Distributed Parameters Line"
ShowPortLabels "FromPortIcon"
SystemSampleTime "-1"
FunctionWithSeparateData off
RTWMemSecFuncInitTerm "Inherit from model"
RTWMemSecFuncExecute "Inherit from model"
RTWMemSecDataConstants "Inherit from model"
RTWMemSecDataInternal "Inherit from model"
RTWMemSecDataParameters "Inherit from model"
Phases "1"
Frequency "60"
Resistance "0.011"
Inductance "0.8674e-03"
Capacitance "13.41e-09"
Length "150"
x1 "[0 -126284.420527215;0.000102316423901542 -1030"
"09.215161606;0.000204632847803084 -79580.7687266743;0.000306949271704625 -560"
"33.9344166563;0.000409265695606167 -32403.7415448344;0.000511582119507709 -87"
"25.3434323783]"
x2 "[0 -136749.170157296;0.000102316423901542 -1138"
"44.863049278;0.000204632847803084 -90771.1952823772;0.000306949271704625 -675"
"62.492266378;0.000409265695606167 -44253.2802954778;0.000511582119507709 -208"
"78.2351854462]"
x3 "[0 -528.580606472671;0.000102316423901542 -447."
"831010078915;0.000204632847803084 -366.415200446344;0.000306949271704625 -284"
".454295338143;0.000409265695606167 -202.070223425663;0.000511582119507709 -11"
"9.385542901927]"
x4 "[0 -952.674213166175;0.000102316423901542 -856."
"242661836947;0.000204632847803084 -758.537326012862;0.000306949271704625 -659"
".703556477506;0.000409265695606167 -559.888382722415;0.000511582119507709 -45"
"9.240294219498]"
x5 "0.000511582119507709"
Measurements "None"
}
Block {
BlockType Demux
Name "Demux"
Ports [1, 3]
Position [305, 332, 310, 378]
BackgroundColor "black"
ShowName off
Outputs "3"
Port {
PortNumber 1
Name "Fault current (A)"
RTWStorageClass "Auto"
DataLoggingNameMode "SignalName"
}
Port {
PortNumber 2
Name "Imag T1 (A)"
RTWStorageClass "Auto"
DataLoggingNameMode "SignalName"
}
}
Block {
BlockType SubSystem
Name "Double-click here for details"
Ports []
Position [815, 370, 842, 395]
DropShadow on
OpenFcn "showdemo(bdroot(gcb))"
MinAlgLoopOccurrences off
RTWSystemCode "Auto"
FunctionWithSeparateData off
MaskHideContents off
MaskDisplay "disp('?')"
MaskIconFrame on
MaskIconOpaque on
MaskIconRotate "none"
MaskIconUnits "autoscale"
System {
Name "Double-click here for details"
Location [34, 118, 993, 712]
Open off
ModelBrowserVisibility off
ModelBrowserWidth 200
ScreenColor "white"
PaperOrientation "landscape"
PaperPositionMode "auto"
PaperType "usletter"
PaperUnits "inches"
TiledPaperMargins [0.500000, 0.500000, 0.500000, 0.500000]
TiledPageScale 1
ShowPageBoundaries off
ZoomFactor "100"
Annotation {
Name "Demonstration"
Position [24, 262]
HorizontalAlignment "left"
VerticalAlignment "top"
ForegroundColor "blue"
FontSize 14
FontWeight "bold"
}
Annotation {
Name "This demonstration ilustrates frequency-dom"
"ain and time-domain analysis of\na series-compensated transmission system"
Position [24, 22]
HorizontalAlignment "left"
VerticalAlignment "top"
FontSize 14
FontWeight "bold"
}
Annotation {
Name "Circuit Description"
Position [19, 87]
HorizontalAlignment "left"
VerticalAlignment "top"
ForegroundColor "blue"
FontSize 14
FontWeight "bold"
}
Annotation {
Name "A 735 kV, 300 km line is used to transmit"
" power from bus B1 (735 kV equivalent system) to bus B2 (315 kV equivalent). "
"\nIn order to simplify, only one phase of the system has been represented. \n"
"(A detailed simulation of a three-phase series compensated network is presen"
"ted in demo power_3phseries and explained in the case studies\nsection of the"
" user's manual.)\n\nIn order to increase the transmission capacity, the line "
"is series compensated at its center by a capacitor representing 40% of the li"
"ne reactance.\nThe line is also shunt compensated at both ends by a 330 Mvar "
"shunt reactance (110 Mvar /phase). \nOpen the Series Compensation subsystem."
" Notice that the series capacitor is protected by a metal oxide varistor (MOV"
") simulated by the Surge Arrester block.\nThe 250 MVA, 735 kV / 315 kV transf"
"ormer is a Saturable Transformer block simulating one phase of the three-phas"
"e 750 MVA transformer. \nA Multimeter block is used to monitor the fault cu"
"rrent as well as the flux and magnetizing current of the transformer."
Position [22, 107]
HorizontalAlignment "left"
VerticalAlignment "top"
FontName "Arial"
FontSize 12
}
Annotation {
Name "You now study the transient performance of "
"this circuit when a 6-cycle fault is applied at node B2.\nFault is simulated "
"by the Breaker block. Switching times are defined in the Breaker block menu ("
"closing at t = 3 cycles and opening at t = 9 cycles). "
Position [22, 283]
HorizontalAlignment "left"
VerticalAlignment "top"
FontSize 12
}
Annotation {
Name "Start the simulatiom and observe waveforms "
"on the two Scopes.\nAt t = 3 cycles, a line-to-ground fault is applied and th"
"e fault current reaches 10 kA (trace 1 of Scope2).\nDuring the fault, the MOV"
" conducts at every half cycle (trace 2 of Scope1) and the voltage across the "
"capacitor (trace 1 of Scope1) is limited to 263 kV.\nAt t = 9 cycles, the fa"
"ult is cleared. The 15 Hz mode is clearly seen on the capacitor voltage (trac"
"e 1 of Scope1) and bus B2 voltage (trace 3 of Scope1).\nDuring fault the flux"
" in the transformer is trapped to around 1 pu. At fault clearing the flux of"
"fset and 15 Hz component cause transformer\nsaturation (flux > 1.2 pu, trace "
"3 of Scope2), producing magnetizing current pulses (trace 2 of Scope2)."
Position [22, 481]
HorizontalAlignment "left"
VerticalAlignment "top"
FontSize 12
}
Annotation {
Name "Frequency Analysis"
Position [24, 322]
HorizontalAlignment "left"
VerticalAlignment "top"
ForegroundColor "blue"
FontName "Arial"
FontSize 12
FontWeight "bold"
}
Annotation {
Name "Time Domain Simulation - Fault at Bus B2"
Position [19, 457]
HorizontalAlignment "left"
VerticalAlignment "top"
ForegroundColor "blue"
FontName "Arial"
FontSize 12
FontWeight "bold"
}
Annotation {
Name "In order to understand the transient behavi"
"or of this series-compensated network, a frequency analysis is first preforme"
"d by measuring the Impedance at node B2.\nThis measurement is performed by t"
"he Impedance Measurement block connected at node B2. \nOpen the Powergui and "
"in the Tools menu select 'Impedance vs Frequency Mesurement'. Click on Displa"
"y to compute and display the impedance for the 0 - 500 Hz range.\nThe impedan"
"ce curves show two main parallel resonances (impedance maxima and phase inver"
"sion), corresponding to 15 Hz and 300 Hz modes. \nThe 15 Hz mode is due to a "
"parallel resonance of the series capacitance and the two shunt reactances.\nT"
"he 300 Hz mode is mainly due to resonance of shunt line capacitance and seri"
"es reactance of the transmission system. \nThese two modes are likely to be e"
"xcited at fault clearing."
Position [19, 345]
HorizontalAlignment "left"
VerticalAlignment "top"
FontSize 12
}
Annotation {
Name "G. Sybille (Hydro-Quebec)"
Position [26, 60]
HorizontalAlignment "left"
VerticalAlignment "top"
FontName "Arial"
FontSize 12
}
}
}
Block {
BlockType Reference
Name "Fault"
Ports [0, 0, 0, 0, 0, 1, 1]
Position [625, 190, 665, 230]
Orientation "down"
ForegroundColor "red"
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Breaker"
SourceType "Breaker"
ShowPortLabels "FromPortIcon"
SystemSampleTime "-1"
FunctionWithSeparateData off
RTWMemSecFuncInitTerm "Inherit from model"
RTWMemSecFuncExecute "Inherit from model"
RTWMemSecDataConstants "Inherit from model"
RTWMemSecDataInternal "Inherit from model"
RTWMemSecDataParameters "Inherit from model"
BreakerResistance "0.01"
InitialState "0"
SnubberResistance "inf"
SnubberCapacitance "0"
SwitchingTimes "[ 3/60 9/60 ]"
External off
Measurements "Branch current"
MoreParameters off
NoBreakLoop off
}
Block {
BlockType Reference
Name "Ground1"
Ports [0, 0, 0, 0, 0, 1]
Position [814, 240, 836, 265]
Orientation "down"
ShowName off
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Ground"
SourceType "Ground"
PhysicalDomain "powersysdomain"
SubClassName "unknown"
LeftPortType "p1"
RightPortType "p1"
LConnTagsString "a"
}
Block {
BlockType Reference
Name "Ground2"
Ports [0, 0, 0, 0, 0, 1]
Position [699, 235, 721, 260]
Orientation "down"
ShowName off
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Ground"
SourceType "Ground"
PhysicalDomain "powersysdomain"
SubClassName "unknown"
LeftPortType "p1"
RightPortType "p1"
LConnTagsString "a"
}
Block {
BlockType Reference
Name "Ground3"
Ports [0, 0, 0, 0, 0, 1]
Position [634, 285, 656, 310]
Orientation "down"
ShowName off
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Ground"
SourceType "Ground"
PhysicalDomain "powersysdomain"
SubClassName "unknown"
LeftPortType "p1"
RightPortType "p1"
LConnTagsString "a"
}
Block {
BlockType Reference
Name "Ground4"
Ports [0, 0, 0, 0, 0, 1]
Position [529, 285, 551, 310]
Orientation "down"
ShowName off
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Ground"
SourceType "Ground"
PhysicalDomain "powersysdomain"
SubClassName "unknown"
LeftPortType "p1"
RightPortType "p1"
LConnTagsString "a"
}
Block {
BlockType Reference
Name "Ground5"
Ports [0, 0, 0, 0, 0, 1]
Position [484, 285, 506, 310]
Orientation "down"
ShowName off
AttributesFormatString "\\n"
DialogController "POWERSYS.PowerSysDialog"
SourceBlock "powerlib/Elements/Ground"
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