Description: "Package that contains the examples for balanced loads and step down transformer"

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## Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown

Package that contains the examples for balanced loads and step down transformer

### Information

This package contains examples for the IEEE 4 nodes test validation whith balanced load and step down in the voltage of the transformers.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

### Package Content

Name | Description
--- | ---
DD | IEEE 4 node test feeder model with balanced load and D - D connection (step down)
DY | IEEE 4 node test feeder model with balanced load and D - Y connection (step down)
YD | IEEE 4 node test feeder model with balanced load and Y - D connection (step down)
YY | IEEE 4 node test feeder model with balanced load and Y - Y connection (step down)

## Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.DD

IEEE 4 node test feeder model with balanced load and D - D connection (step down)

### Information

IEEE 4 nodes validation test case with the following characteristics

- balanced load,
  - power consumption on each phase P1,2,3 = 1800 kW
  - power factor on each phase cosφ1,2,3 = 0.9
- voltage step-down transformer (VPri=12.47 kV, VSec = 4.16kV),
- D-D transformer

Extends from Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 (Base model of the IEEE 4 nodes test feeder).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Voltage | VLL_side1 | 12.47e3 | Voltage line to line side 1 [V]
Voltage | VLL_side2 | 4.16e3 | Voltage line to line side 2 [V]
ApparentPower | VARbase | 6000e3 | Base VA power of the transformer [VA]
Boolean | line1_use_Z_y | false | Choose between Zy or Zd impedance matrix for line 1
Boolean | line2_use_Z_y | false | Choose between Zy or Zd impedance matrix for line 2
Voltage | V2_ref[3] | {12339,12349,12321} | Reference RMS voltage node 2 - IEEE results [V]
Voltage | V3_ref[3] | {3911,3914,3905} | Reference RMS voltage node 3 - IEEE results [V]
Voltage | V4_ref[3] | {3442,3497,3384} | Reference RMS voltage node 4 - IEEE results [V]
Angle | Theta2_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 2 - IEEE results [rad]
Angle | Theta3_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 3 - IEEE results [rad]
Angle | Theta4_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 4 - IEEE results [rad]

### Modelica definition

model DD "IEEE 4 node test feeder model with balanced load and D - D connection (step down)" extends Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 ( final line1_use_Z_y=false, final line2_use_Z_y=false, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node1, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node2, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node3, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node4, final VLL_side1=12.47e3, final VLL_side2=4.16e3, final VARbase=6000e3, final V2_ref={12339,12349,12321}, final V3_ref={3911,3914,3905}, final V4_ref={3442,3497,3384}, final Theta2_ref=Modelica.Constants.pi/180.0*{29.7,-90.4,149.6}, final Theta3_ref=Modelica.Constants.pi/180.0*{26.5,-93.6,146.4}, final Theta4_ref=Modelica.Constants.pi/180.0*{22.3,-99.4,140.7}, loadRL(use_pf_in=false, loadConn=Buildings.Electrical.Types.LoadConnection.wye_to_delta)); Modelica.Blocks.Sources.Constant load(k=-1800e3); Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.ACACTransformerDD transformer( VHigh=VLL_side1, VLow=VLL_side2, XoverR=6, Zperc=sqrt(0.01^2 + 0.06^2), VABase=VARbase); equation connect(load.y, loadRL.Pow1); connect(load.y, loadRL.Pow2); connect(load.y, loadRL.Pow3); connect(line1.terminal_p, transformer.terminal_n); connect(transformer.terminal_p, line2.terminal_n); connect(node1.term, line1.terminal_n); connect(node2.term, transformer.terminal_n); connect(node3.term, line2.terminal_n); connect(node4.term, loadRL.terminal); end DD;

## Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.DY

IEEE 4 node test feeder model with balanced load and D - Y connection (step down)

### Information

IEEE 4 nodes validation test case with the following characteristics

- balanced load,
  - power consumption on each phase P1,2,3 = 1800 kW
  - power factor on each phase cosφ1,2,3 = 0.9
- voltage step-down transformer (VPri=12.47 kV, VSec = 4.16kV),
- D-Y transformer

Extends from Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 (Base model of the IEEE 4 nodes test feeder).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Voltage | VLL_side1 | 12.47e3 | Voltage line to line side 1 [V]
Voltage | VLL_side2 | 4.16e3 | Voltage line to line side 2 [V]
ApparentPower | VARbase | 6000e3 | Base VA power of the transformer [VA]
Boolean | line1_use_Z_y | false | Choose between Zy or Zd impedance matrix for line 1
Boolean | line2_use_Z_y | true | Choose between Zy or Zd impedance matrix for line 2
Voltage | V2_ref[3] | {12340,12349,12318} | Reference RMS voltage node 2 - IEEE results [V]
Voltage | V3_ref[3] | {2249,2263,2259} | Reference RMS voltage node 3 - IEEE results [V]
Voltage | V4_ref[3] | {1920,2054,1986} | Reference RMS voltage node 4 - IEEE results [V]
Angle | Theta2_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 2 - IEEE results [rad]
Angle | Theta3_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 3 - IEEE results [rad]
Angle | Theta4_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 4 - IEEE results [rad]

### Modelica definition

model DY "IEEE 4 node test feeder model with balanced load and D - Y connection (step down)" extends Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 ( final line1_use_Z_y=false, final line2_use_Z_y=true, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node1, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node2, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node3, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node4, final VLL_side1=12.47e3, final VLL_side2=4.16e3, final VARbase=6000e3, final V2_ref={12340,12349,12318}, final V3_ref={2249,2263,2259}, final V4_ref={1920,2054,1986}, final Theta2_ref=Modelica.Constants.pi/180.0*{29.7,-90.4,149.6}, final Theta3_ref=Modelica.Constants.pi/180.0*{-33.7,-153.4,86.4}, final Theta4_ref=Modelica.Constants.pi/180.0*{-39.1,-158.3,80.9}, loadRL(use_pf_in=false)); Modelica.Blocks.Sources.Constant load(k=-1800e3); Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.ACACTransformerStepDownDY transformer( VHigh=VLL_side1, VLow=VLL_side2, XoverR=6, Zperc=sqrt(0.01^2 + 0.06^2), VABase=VARbase); equation connect(load.y, loadRL.Pow1); connect(load.y, loadRL.Pow2); connect(load.y, loadRL.Pow3); connect(line1.terminal_p, transformer.terminal_n); connect(transformer.terminal_p, line2.terminal_n); connect(node1.term, line1.terminal_n); connect(node2.term, transformer.terminal_n); connect(node3.term, line2.terminal_n); connect(node4.term, loadRL.terminal); end DY;

## Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YD

IEEE 4 node test feeder model with balanced load and Y - D connection (step down)

### Information

IEEE 4 nodes validation test case with the following characteristics

- balanced load,
  - power consumption on each phase P1,2,3 = 1800 kW
  - power factor on each phase cosφ1,2,3 = 0.9
- voltage step-down transformer (VPri=12.47 kV, VSec = 4.16kV),
- Y-D transformer

Extends from Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 (Base model of the IEEE 4 nodes test feeder).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Voltage | VLL_side1 | 12.47e3 | Voltage line to line side 1 [V]
Voltage | VLL_side2 | 4.16e3 | Voltage line to line side 2 [V]
ApparentPower | VARbase | 6000e3 | Base VA power of the transformer [VA]
Boolean | line1_use_Z_y | true | Choose between Zy or Zd impedance matrix for line 1
Boolean | line2_use_Z_y | false | Choose between Zy or Zd impedance matrix for line 2
Voltage | V2_ref[3] | {7113,7132,7123} | Reference RMS voltage node 2 - IEEE results [V]
Voltage | V3_ref[3] | {3906,3915,3909} | Reference RMS voltage node 3 - IEEE results [V]
Voltage | V4_ref[3] | {3437,3497,3388} | Reference RMS voltage node 4 - IEEE results [V]
Angle | Theta2_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 2 - IEEE results [rad]
Angle | Theta3_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 3 - IEEE results [rad]
Angle | Theta4_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 4 - IEEE results [rad]

### Modelica definition

model YD "IEEE 4 node test feeder model with balanced load and Y - D connection (step down)" extends Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 ( final line1_use_Z_y=true, final line2_use_Z_y=false, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node1, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node2, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node3, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeDelta node4, final VLL_side1=12.47e3, final VLL_side2=4.16e3, final VARbase=6000e3, final V2_ref={7113,7132,7123}, final V3_ref={3906,3915,3909}, final V4_ref={3437,3497,3388}, final Theta2_ref=Modelica.Constants.pi/180.0*{-0.3,-120.3,119.6}, final Theta3_ref=Modelica.Constants.pi/180.0*{-3.5,-123.6,116.3}, final Theta4_ref=Modelica.Constants.pi/180.0*{-7.8,-129.3,110.6}, loadRL(use_pf_in=false, loadConn=Buildings.Electrical.Types.LoadConnection.wye_to_delta)); Modelica.Blocks.Sources.Constant load(k=-1800e3); Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.ACACTransformerStepDownYD transformer( VHigh=VLL_side1, VLow=VLL_side2, XoverR=6, Zperc=sqrt(0.01^2 + 0.06^2), VABase=VARbase); equation connect(load.y, loadRL.Pow1); connect(load.y, loadRL.Pow2); connect(load.y, loadRL.Pow3); connect(line1.terminal_p, transformer.terminal_n); connect(transformer.terminal_p, line2.terminal_n); connect(node1.term, line1.terminal_n); connect(node2.term, transformer.terminal_n); connect(node3.term, line2.terminal_n); connect(node4.term, loadRL.terminal); end YD;

## Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BalancedStepDown.YY

IEEE 4 node test feeder model with balanced load and Y - Y connection (step down)

### Information

IEEE 4 nodes validation test case with the following characteristics

- balanced load,
  - power consumption on each phase P1,2,3 = 1800 kW
  - power factor on each phase cosφ1,2,3 = 0.9
- voltage step-down transformer (VPri=12.47 kV, VSec = 4.16kV),
- Y-Y transformer

Extends from Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 (Base model of the IEEE 4 nodes test feeder).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Voltage | VLL_side1 | 12.47e3 | Voltage line to line side 1 [V]
Voltage | VLL_side2 | 4.16e3 | Voltage line to line side 2 [V]
ApparentPower | VARbase | 6000e3 | Base VA power of the transformer [VA]
Boolean | line1_use_Z_y | true | Choose between Zy or Zd impedance matrix for line 1
Boolean | line2_use_Z_y | true | Choose between Zy or Zd impedance matrix for line 2
Voltage | V2_ref[3] | {7107,7140,7121} | Reference RMS voltage node 2 - IEEE results [V]
Voltage | V3_ref[3] | {2247,2269,2256} | Reference RMS voltage node 3 - IEEE results [V]
Voltage | V4_ref[3] | {1918,2061,1981} | Reference RMS voltage node 4 - IEEE results [V]
Angle | Theta2_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 2 - IEEE results [rad]
Angle | Theta3_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 3 - IEEE results [rad]
Angle | Theta4_ref[3] | Modelica.Constants.pi/180.0*... | Reference voltage phase angle node 4 - IEEE results [rad]

### Modelica definition

model YY "IEEE 4 node test feeder model with balanced load and Y - Y connection (step down)" extends Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.BaseClasses.IEEE4 ( final line1_use_Z_y=true, final line2_use_Z_y=true, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node1, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node2, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node3, redeclare Buildings.Electrical.AC.ThreePhasesUnbalanced.Sensors.ProbeWye node4, final VLL_side1=12.47e3, final VLL_side2=4.16e3, final VARbase=6000e3, final V2_ref={7107,7140,7121}, final V3_ref={2247,2269,2256}, final V4_ref={1918,2061,1981}, final Theta2_ref=Modelica.Constants.pi/180.0*{-0.3,-120.3,119.6}, final Theta3_ref=Modelica.Constants.pi/180.0*{-3.7,-123.5,116.4}, final Theta4_ref=Modelica.Constants.pi/180.0*{-9.1,-128.3,110.9}, loadRL(use_pf_in=false)); Modelica.Blocks.Sources.Constant load(k=-1800e3); Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.ACACTransformer transformer( VHigh=VLL_side1, VLow=VLL_side2, XoverR=6, Zperc=sqrt(0.01^2 + 0.06^2), VABase=VARbase); equation connect(load.y, loadRL.Pow1); connect(load.y, loadRL.Pow2); connect(load.y, loadRL.Pow3); connect(line1.terminal_p, transformer.terminal_n); connect(transformer.terminal_p, line2.terminal_n); connect(node1.term, line1.terminal_n); connect(node2.term, transformer.terminal_n); connect(node3.term, line2.terminal_n); connect(node4.term, loadRL.terminal); end YY;