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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| within OpenIPSL.Electrical.Sensors; | ||
| model SoftPMU_MPC "Model of a PMU measuring phasors on a line" | ||
| outer OpenIPSL.Electrical.SystemBase SysData; | ||
| OpenIPSL.Interfaces.PwPin p | ||
| "the positive direction of the current is from connector p ..." annotation ( | ||
| Placement(transformation(extent={{-80,-10},{-60,10}}), iconTransformation( | ||
| extent={{-80,-10},{-60,10}}))); | ||
| OpenIPSL.Interfaces.PwPin n "... and to connector n" annotation (Placement( | ||
| transformation(extent={{60,-10},{80,10}}), iconTransformation(extent={{ | ||
| 60,-10},{80,10}}))); | ||
| parameter Types.PerUnit v_0 = 1 "Voltage magnitude initial value" annotation (Dialog(group="Initialization")); | ||
| parameter Types.Angle angle_0 = 0 "Voltage angle initial value" annotation (Dialog(group="Initialization")); | ||
| parameter Types.Time Ts = 0.01 "Derivative smoothing filter time constant" annotation (Dialog(group="PMU parameters")); | ||
| parameter Types.Frequency fn = SysData.fn "System base frequency" annotation (Dialog(group="PMU parameters")); | ||
| public | ||
| Types.PerUnit Vr=p.vr "real part of the voltage phasor"; | ||
| Types.PerUnit Vi=p.vi "imaginary part of the voltage phasor"; | ||
| Types.PerUnit Ir=p.ir "real part of the current phasor"; | ||
| Types.PerUnit Ii=p.ii "imaginary part of the current phasor"; | ||
| Types.Frequency freq "frequency estimate"; | ||
| protected | ||
| parameter Types.PerUnit vr_0=v_0*cos(angle_0); | ||
| parameter Types.PerUnit vi_0=v_0*sin(angle_0); | ||
| public | ||
| NonElectrical.Nonlinear.FrequencyCalc fCalc( | ||
| real_start=vr_0, | ||
| imag_start=vi_0, | ||
| start_guess=true, | ||
| Ts=Ts) | ||
| annotation (Placement(transformation(extent={{10,-10},{30,10}}))); | ||
| NonElectrical.Continuous.SimpleLag simpleLag( | ||
| K=1, | ||
| T=0.1, | ||
| y_start=vr_0) | ||
| annotation (Placement(transformation(extent={{-20,20},{0,40}}))); | ||
| NonElectrical.Continuous.SimpleLag simpleLag1( | ||
| K=1, | ||
| T=0.1, | ||
| y_start=vi_0) | ||
| annotation (Placement(transformation(extent={{-20,-40},{0,-20}}))); | ||
| Modelica.Blocks.Sources.RealExpression VR(y=p.vr) | ||
| annotation (Placement(transformation(extent={{-52,20},{-32,40}}))); | ||
| Modelica.Blocks.Sources.RealExpression VI(y=p.vi) | ||
| annotation (Placement(transformation(extent={{-52,-40},{-32,-20}}))); | ||
| equation | ||
| connect(p, n); | ||
| freq = fCalc.y/(2*C.pi) + fn; | ||
| connect(simpleLag.y, fCalc.real_part) annotation (Line(points={{1,30},{6,30},{ | ||
| 6,14},{8,14},{8,6}}, color={0,0,127})); | ||
| connect(simpleLag1.y, fCalc.imag_part) annotation (Line(points={{1,-30},{6,-30}, | ||
| {6,-14},{8,-14},{8,-6}}, color={0,0,127})); | ||
| connect(simpleLag.u, VR.y) | ||
| annotation (Line(points={{-22,30},{-31,30}}, color={0,0,127})); | ||
| connect(VI.y, simpleLag1.u) | ||
| annotation (Line(points={{-31,-30},{-22,-30}}, color={0,0,127})); | ||
| annotation (Icon(coordinateSystem( | ||
| preserveAspectRatio=false, | ||
| extent={{-100,-100},{100,100}}), graphics={Rectangle( | ||
| extent={{-60,20},{60,-20}}, | ||
| lineColor={0,0,255}, | ||
| fillColor={95,95,95}, | ||
| fillPattern=FillPattern.Solid),Text( | ||
| extent={{-60,20},{60,-20}}, | ||
| lineColor={255,255,0}, | ||
| textString="%name"),Polygon( | ||
| points={{-42,34},{28,34},{28,24},{48,36},{28,48},{28,38},{-42,38},{-42, | ||
| 34}}, | ||
| lineColor={28,108,200}, | ||
| fillPattern=FillPattern.Solid, | ||
| fillColor={28,108,200}),Ellipse(extent={{-60,62},{62,-60}}, lineColor | ||
| = | ||
| {28,108,200}),Text( | ||
| extent={{-36,-26},{44,-48}}, | ||
| lineColor={28,108,200}, | ||
| fillColor={85,170,255}, | ||
| fillPattern=FillPattern.Solid, | ||
| textString="PMU")}), Documentation(info="<html> | ||
| <p>This device can be used to simulate a Phasorial Measurement Unit (PMU) designed for estimating the grid's frequency at a local node. | ||
| Frequency estimates are provided given the following: initial conditions for the node's voltage phasor; nominal frequency value; and time constant associated with the | ||
| smoothing filter used in derivative calculations.</p> | ||
| <h5>Note</h5> | ||
| <p><em>The calculated frequency is just an estimate and can deviate by a certain margin of error.</em></p> | ||
| </html>")); | ||
| end SoftPMU_MPC; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| PwVoltage | ||
| PwCurrent | ||
| SoftPMU | ||
| SoftPMU_MPC |
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