verified tower fan speed control sequences [ci skip]

lbl-srg · Jan 19, 2024 · 723f11f · 723f11f
1 parent 093128d
commit 723f11f
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Showing 32 changed files with 844 additions and 482 deletions.
diff --git a/Buildings/Controls/OBC/ASHRAE/PrimarySystem/ChillerPlant/Towers/FanSpeed/Controller.mo b/Buildings/Controls/OBC/ASHRAE/PrimarySystem/ChillerPlant/Towers/FanSpeed/Controller.mo
@@ -53,8 +53,7 @@ block Controller "Tower fan speed control"
                                             chiWatCon == Buildings.Controls.OBC.CDL.Types.SimpleController.PID)));
   parameter Real LIFT_min[nChi](
     final unit=fill("K",nChi),
-    final quantity=fill("TemperatureDifference",nChi),
-    displayUnit=fill("degC",nChi))={12,12} "Minimum LIFT of each chiller"
+    final quantity=fill("TemperatureDifference",nChi))={12,12} "Minimum LIFT of each chiller"
       annotation (Dialog(tab="Return temperature control", group="Setpoint"));
   parameter Real TConWatSup_nominal[nChi](
     final unit=fill("K",nChi),
@@ -173,7 +172,7 @@ block Controller "Tower fan speed control"
     displayUnit="degC",
     final quantity="ThermodynamicTemperature")
     "Chilled water supply temperature setpoint"
-    annotation (Placement(transformation(extent={{-140,20},{-100,60}}),
+    annotation (Placement(transformation(extent={{-140,10},{-100,50}}),
       iconTransformation(extent={{-140,20},{-100,60}})));
   Buildings.Controls.OBC.CDL.Interfaces.RealInput reqPlaCap(
     final unit="W",
@@ -185,7 +184,7 @@ block Controller "Tower fan speed control"
     final max=fill(1, nChi),
     final unit=fill("1", nChi))
     "Maximum cooling tower speed setpoint from each chiller head pressure control loop"
-    annotation (Placement(transformation(extent={{-140,-40},{-100,0}}),
+    annotation (Placement(transformation(extent={{-140,-50},{-100,-10}}),
       iconTransformation(extent={{-140,-40},{-100,0}})));
   Buildings.Controls.OBC.CDL.Interfaces.BooleanInput uTow[nTowCel]
     "Cooling tower cell operating status: true=running tower cell"
@@ -219,7 +218,7 @@ block Controller "Tower fan speed control"
     final min=0,
     final max=1,
     final unit="1") "Fan speed setpoint of each cooling tower cell"
-    annotation (Placement(transformation(extent={{100,-20},{140,20}}),
+    annotation (Placement(transformation(extent={{100,-60},{140,-20}}),
       iconTransformation(extent={{100,-20},{140,20}})));
 
   Buildings.Controls.OBC.ASHRAE.PrimarySystem.ChillerPlant.Towers.FanSpeed.ReturnWaterTemperature.Controller
@@ -291,7 +290,7 @@ equation
     annotation (Line(points={{-42,44},{-76,44},{-76,60},{-120,60}},
       color={0,0,127}));
   connect(fanSpeWse.TChiWatSupSet, TChiWatSupSet)
-    annotation (Line(points={{-42,41},{-82,41},{-82,40},{-120,40}},
+    annotation (Line(points={{-42,41},{-60,41},{-60,30},{-120,30}},
                                                   color={0,0,127}));
   connect(uChi, fanSpeRetTem.uChi)
     annotation (Line(points={{-120,120},{-64,120},{-64,-25},{18,-25}},
@@ -302,15 +301,15 @@ equation
     annotation (Line(points={{18,-31},{-76,-31},{-76,0},{-120,0}},
       color={0,0,127}));
   connect(fanSpeRetTem.uMaxTowSpeSet, uMaxTowSpeSet)
-    annotation (Line(points={{18,-34},{-80,-34},{-80,-20},{-120,-20}},
+    annotation (Line(points={{18,-34},{-80,-34},{-80,-30},{-120,-30}},
       color={0,0,127}));
   connect(uFanSpe,fanSpeRetTem.uFanSpe)
     annotation (Line(points={{-120,80},{-72,80},{-72,-37},{18,-37}},
       color={0,0,127}));
   connect(fanSpeRetTem.uTow, uTow) annotation (Line(points={{18,-40},{-68,-40},{
           -68,-60},{-120,-60}}, color={255,0,255}));
   connect(TChiWatSupSet, fanSpeRetTem.TChiWatSupSet)
-    annotation (Line(points={{-120,40},{-60,40},{-60,-46},{18,-46}},
+    annotation (Line(points={{-120,30},{-60,30},{-60,-46},{18,-46}},
       color={0,0,127}));
   connect(fanSpeRetTem.uPla, uPla)
     annotation (Line(points={{18,-49},{-60,-49},{-60,-100},{-120,-100}},
@@ -325,7 +324,7 @@ equation
     annotation (Line(points={{18,-58},{-48,-58},{-48,-160},{-120,-160}},
       color={0,0,127}));
   connect(fanSpeRetTem.ySpeSet,ySpeSet)
-    annotation (Line(points={{62,-40},{80,-40},{80,0},{120,0}},
+    annotation (Line(points={{62,-40},{120,-40}},
       color={0,0,127}));
 
 annotation (

diff --git a/...BC/ASHRAE/PrimarySystem/ChillerPlant/Towers/FanSpeed/ReturnWaterTemperature/Controller.mo b/...BC/ASHRAE/PrimarySystem/ChillerPlant/Towers/FanSpeed/ReturnWaterTemperature/Controller.mo
diff --git a/...PrimarySystem/ChillerPlant/Towers/FanSpeed/ReturnWaterTemperature/Subsequences/Coupled.mo b/...PrimarySystem/ChillerPlant/Towers/FanSpeed/ReturnWaterTemperature/Subsequences/Coupled.mo
@@ -12,9 +12,15 @@ block Coupled
     annotation (Dialog(group="Controller"));
   parameter Real k=1 "Gain of controller"
     annotation (Dialog(group="Controller"));
-  parameter Real Ti(final quantity="Time", final unit="s")=0.5 "Time constant of integrator block"
+  parameter Real Ti(
+    final quantity="Time",
+    final unit="s")=0.5
+    "Time constant of integrator block"
     annotation (Dialog(group="Controller"));
-  parameter Real Td(final quantity="Time", final unit="s")=0.1 "Time constant of derivative block"
+  parameter Real Td(
+    final quantity="Time",
+    final unit="s")=0.1
+    "Time constant of derivative block"
     annotation (Dialog(group="Controller", enable=
           controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PD or
           controllerType == Buildings.Controls.OBC.CDL.Types.SimpleController.PID));
@@ -35,37 +41,37 @@ block Coupled
     displayUnit="degC",
     final quantity="ThermodynamicTemperature")
     "Condenser water return temperature (condenser leaving)"
-    annotation (Placement(transformation(extent={{-160,30},{-120,70}}),
+    annotation (Placement(transformation(extent={{-160,20},{-120,60}}),
       iconTransformation(extent={{-140,40},{-100,80}})));
   Buildings.Controls.OBC.CDL.Interfaces.RealInput uConWatPumSpe[nConWatPum](
     final min=fill(0, nConWatPum),
     final max=fill(1, nConWatPum),
     final unit=fill("1", nConWatPum)) "Current condenser water pump speed"
-    annotation (Placement(transformation(extent={{-160,0},{-120,40}}),
+    annotation (Placement(transformation(extent={{-160,-20},{-120,20}}),
       iconTransformation(extent={{-140,0},{-100,40}})));
   Buildings.Controls.OBC.CDL.Interfaces.RealInput uMaxTowSpeSet[nChi](
     final min=fill(0, nChi),
     final max=fill(1, nChi),
     final unit=fill("1", nChi))
     "Maximum cooling tower speed setpoint from each chiller head pressure control loop"
-    annotation (Placement(transformation(extent={{-160,-40},{-120,0}}),
+    annotation (Placement(transformation(extent={{-160,-60},{-120,-20}}),
       iconTransformation(extent={{-140,-40},{-100,0}})));
   Buildings.Controls.OBC.CDL.Interfaces.BooleanInput uChi[nChi]
     "Chiller enabling status: true=ON"
-    annotation (Placement(transformation(extent={{-160,-80},{-120,-40}}),
+    annotation (Placement(transformation(extent={{-160,-100},{-120,-60}}),
       iconTransformation(extent={{-140,-80},{-100,-40}})));
   Buildings.Controls.OBC.CDL.Interfaces.RealInput plrTowMaxSpe(
     final min=0,
     final max=1,
     final unit="1")
     "Tower maximum speed that reset based on plant partial load ratio"
-    annotation (Placement(transformation(extent={{-160,-120},{-120,-80}}),
+    annotation (Placement(transformation(extent={{-160,-150},{-120,-110}}),
       iconTransformation(extent={{-140,-120},{-100,-80}})));
   Buildings.Controls.OBC.CDL.Interfaces.RealOutput ySpeSet(
     final min=0,
     final max=1,
     final unit="1") "Fan speed setpoint of each cooling tower cell"
-    annotation (Placement(transformation(extent={{120,-60},{160,-20}}),
+    annotation (Placement(transformation(extent={{120,-20},{160,20}}),
       iconTransformation(extent={{100,-20},{140,20}})));
 
   Buildings.Controls.OBC.CDL.Reals.PIDWithReset conPID(
@@ -76,16 +82,17 @@ block Coupled
     final yMax=yMax,
     final yMin=yMin,
     final reverseActing=false,
-    final y_reset=yMin) "Condenser water return temperature controller"
+    final y_reset=yMin)
+    "Condenser water return temperature controller"
     annotation (Placement(transformation(extent={{-80,70},{-60,90}})));
+  Buildings.Controls.OBC.CDL.Reals.Line CWRTSpd
+    "Fan speed calculated based on return water temperature control loop"
+    annotation (Placement(transformation(extent={{80,70},{100,90}})));
 
 protected
   Buildings.Controls.OBC.CDL.Reals.Sources.Constant minTowSpe(
     final k=fanSpeMin) "Minimum tower speed"
     annotation (Placement(transformation(extent={{-80,110},{-60,130}})));
-  Buildings.Controls.OBC.CDL.Reals.Line CWRTSpd
-    "Fan speed calculated based on return water temperature control loop"
-    annotation (Placement(transformation(extent={{80,70},{100,90}})));
   Buildings.Controls.OBC.CDL.Reals.Sources.Constant zer(
     final k=yMin) "Zero constant"
     annotation (Placement(transformation(extent={{0,110},{20,130}})));
@@ -96,28 +103,29 @@ protected
     final uLow=fill(pumSpeChe, nConWatPum),
     final uHigh=fill(2*pumSpeChe, nConWatPum))
     "Check if the condenser water pump is proven on"
-    annotation (Placement(transformation(extent={{-100,10},{-80,30}})));
+    annotation (Placement(transformation(extent={{-100,-10},{-80,10}})));
   Buildings.Controls.OBC.CDL.Logical.MultiOr anyProOn(
     final nin=nConWatPum)
     "Check if there is any condenser water pump is proven on"
-    annotation (Placement(transformation(extent={{-60,10},{-40,30}})));
+    annotation (Placement(transformation(extent={{-60,-10},{-40,10}})));
   Buildings.Controls.OBC.CDL.Reals.MultiMin fanSpe(final nin=3)
     "Cooling tower fan speed"
-    annotation (Placement(transformation(extent={{20,-70},{40,-50}})));
-  Buildings.Controls.OBC.CDL.Reals.MultiMin maxSpe(final nin=nChi)
+    annotation (Placement(transformation(extent={{20,-90},{40,-70}})));
+  Buildings.Controls.OBC.CDL.Reals.MultiMin maxSpe(
+    final nin=nChi)
     "Lowest value of the maximum cooling tower speed from each chiller head pressure control loop"
-    annotation (Placement(transformation(extent={{-20,-70},{0,-50}})));
+    annotation (Placement(transformation(extent={{-20,-90},{0,-70}})));
   Buildings.Controls.OBC.CDL.Reals.Switch swi  "Logical switch"
-    annotation (Placement(transformation(extent={{80,-50},{100,-30}})));
+    annotation (Placement(transformation(extent={{80,-10},{100,10}})));
   Buildings.Controls.OBC.CDL.Reals.Switch swi1[nChi] "Logical switch"
-    annotation (Placement(transformation(extent={{-60,-70},{-40,-50}})));
+    annotation (Placement(transformation(extent={{-60,-90},{-40,-70}})));
   Buildings.Controls.OBC.CDL.Reals.Sources.Constant one1[nChi](
     final k=fill(1, nChi)) "Constant one"
-    annotation (Placement(transformation(extent={{-100,-90},{-80,-70}})));
+    annotation (Placement(transformation(extent={{-100,-120},{-80,-100}})));
 
 equation
   connect(TConWatRet, conPID.u_m)
-    annotation (Line(points={{-140,50},{-70,50},{-70,68}}, color={0,0,127}));
+    annotation (Line(points={{-140,40},{-70,40},{-70,68}}, color={0,0,127}));
   connect(TConWatRetSet, conPID.u_s)
     annotation (Line(points={{-140,80},{-82,80}}, color={0,0,127}));
   connect(conPID.y, CWRTSpd.u)
@@ -127,46 +135,44 @@ equation
   connect(minTowSpe.y, CWRTSpd.f1)
     annotation (Line(points={{-58,120},{-20,120},{-20,84},{78,84}}, color={0,0,127}));
   connect(one.y, CWRTSpd.x2)
-    annotation (Line(points={{22,60},{40,60},{40,76},{78,76}},
-      color={0,0,127}));
+    annotation (Line(points={{22,60},{40,60},{40,76},{78,76}}, color={0,0,127}));
   connect(one.y, CWRTSpd.f2)
-    annotation (Line(points={{22,60},{40,60},{40,72},{78,72}},
-      color={0,0,127}));
+    annotation (Line(points={{22,60},{40,60},{40,72},{78,72}}, color={0,0,127}));
   connect(uConWatPumSpe, proOn.u)
-    annotation (Line(points={{-140,20},{-102,20}}, color={0,0,127}));
+    annotation (Line(points={{-140,0},{-102,0}}, color={0,0,127}));
   connect(proOn.y, anyProOn.u)
-    annotation (Line(points={{-78,20},{-62,20}}, color={255,0,255}));
+    annotation (Line(points={{-78,0},{-62,0}}, color={255,0,255}));
   connect(anyProOn.y, conPID.trigger)
-    annotation (Line(points={{-38,20},{0,20},{0,40},{-76,40},{-76,68}},
+    annotation (Line(points={{-38,0},{0,0},{0,30},{-76,30},{-76,68}},
       color={255,0,255}));
   connect(uChi, swi1.u2)
-    annotation (Line(points={{-140,-60},{-62,-60}}, color={255,0,255}));
+    annotation (Line(points={{-140,-80},{-62,-80}}, color={255,0,255}));
   connect(one1.y, swi1.u3)
-    annotation (Line(points={{-78,-80},{-70,-80},{-70,-68},{-62,-68}},
+    annotation (Line(points={{-78,-110},{-70,-110},{-70,-88},{-62,-88}},
       color={0,0,127}));
   connect(uMaxTowSpeSet, swi1.u1)
-    annotation (Line(points={{-140,-20},{-80,-20},{-80,-52},{-62,-52}},
+    annotation (Line(points={{-140,-40},{-80,-40},{-80,-72},{-62,-72}},
       color={0,0,127}));
   connect(swi1.y, maxSpe.u)
-    annotation (Line(points={{-38,-60},{-30,-60},{-30,-60},{-22,-60}},
-      color={0,0,127}));
+    annotation (Line(points={{-38,-80},{-22,-80}}, color={0,0,127}));
   connect(CWRTSpd.y, fanSpe.u[1])
-    annotation (Line(points={{102,80},{110,80},{110,40},{10,40},{10,-60.6667},{
-          18,-60.6667}},color={0,0,127}));
+    annotation (Line(points={{102,80},{110,80},{110,30},{10,30},{10,-80.6667},{
+          18,-80.6667}},
+                      color={0,0,127}));
   connect(maxSpe.y, fanSpe.u[2])
-    annotation (Line(points={{2,-60},{18,-60}}, color={0,0,127}));
+    annotation (Line(points={{2,-80},{18,-80}}, color={0,0,127}));
   connect(plrTowMaxSpe, fanSpe.u[3])
-    annotation (Line(points={{-140,-100},{10,-100},{10,-59.3333},{18,-59.3333}},
+    annotation (Line(points={{-140,-130},{10,-130},{10,-79.3333},{18,-79.3333}},
       color={0,0,127}));
   connect(anyProOn.y, swi.u2)
-    annotation (Line(points={{-38,20},{0,20},{0,-40},{78,-40}}, color={255,0,255}));
+    annotation (Line(points={{-38,0},{78,0}}, color={255,0,255}));
   connect(zer.y, swi.u3)
-    annotation (Line(points={{22,120},{60,120},{60,-48},{78,-48}},
+    annotation (Line(points={{22,120},{60,120},{60,-8},{78,-8}},
       color={0,0,127}));
   connect(fanSpe.y, swi.u1)
-    annotation (Line(points={{42,-60},{50,-60},{50,-32},{78,-32}}, color={0,0,127}));
+    annotation (Line(points={{42,-80},{50,-80},{50,8},{78,8}}, color={0,0,127}));
   connect(swi.y,ySpeSet)
-    annotation (Line(points={{102,-40},{140,-40}}, color={0,0,127}));
+    annotation (Line(points={{102,0},{140,0}}, color={0,0,127}));
 
 annotation (
   defaultComponentName="couTowSpe",