OpenIPSL.Electrical.Branches.PSAT

Branch models from PSAT

Information

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name Description
OpenIPSL.Electrical.Branches.PSAT.TwoWindingTransformer TwoWindingTransformer Modeled as series reactances without iron losses
OpenIPSL.Electrical.Branches.PSAT.ThreeWindingTransformer ThreeWindingTransformer Three winding transformer model from PSAT
OpenIPSL.Electrical.Branches.PSAT.PhaseShiftingTransformer PhaseShiftingTransformer Phase Shifting Transformer (PST)
OpenIPSL.Electrical.Branches.PSAT.ULTC_VoltageControl ULTC_VoltageControl Under Load Tap Changer, continuous model, secondary voltage control

OpenIPSL.Electrical.Branches.PSAT.TwoWindingTransformer OpenIPSL.Electrical.Branches.PSAT.TwoWindingTransformer

Modeled as series reactances without iron losses

Parameters

NameDescription
Power flow
S_bSystem base power [V.A]
V_bSending end bus voltage [V]
Transformer parameters
SnPower rating [V.A]
VnVoltage rating [V]
rTResistance(transformer base) [1]
xTReactance(transformer base) [1]
mOptional fixed tap ratio
Visualisation
displayPFDisplay power flow results:

Connectors

NameDescription
p 
n 

OpenIPSL.Electrical.Branches.PSAT.ThreeWindingTransformer OpenIPSL.Electrical.Branches.PSAT.ThreeWindingTransformer

Three winding transformer model from PSAT

Parameters

NameDescription
Power flow
S_bSystem base power [V.A]
V_bSending end bus voltage [V]
Transformer parameters
SnPower rating [V.A]
VnVoltage rating for transformer [V]
r12Resistance of the branch 1-2 (transformer base) [1]
r13Resistance of the branch 1-3 (transformer base) [1]
r23Resistance of the branch 2-3 (transformer base) [1]
x12Reactance of the branch 1-2 (transformer base) [1]
x13Reactance of the branch 1-3 (transformer base) [1]
x23Reactance of the branch 2-3 (transformer base) [1]
mFixed tap ratio [1]

Connectors

NameDescription
b1 
b2 
b3 

OpenIPSL.Electrical.Branches.PSAT.PhaseShiftingTransformer OpenIPSL.Electrical.Branches.PSAT.PhaseShiftingTransformer

Phase Shifting Transformer (PST)

Information

The following documentation is adapted from [Milano2010], chapter 11.2.3:

Phase Shifting Transformers (PhSTs) are able to vary the phase shifting angle φ to control the active power flow. These devices are used in meshed networks for reducing the congestion on some transmission lines and/or properly redis- tributing active power flows in transmission lines. A fairly complete review of PhST technologies can be found in [Verboomen2005].

[...]

The measured pmes of the real power flow pk is compared with the desired power flow pref and a PI controller is used for varying the phase angle φ.

[...]

The phase angle φ is subjected to an windup limiter. [...] It is relevant to note that connecting two areas of a network only by means of PhSTs can lead to unsolvable cases, as PhSTs impose the total real power transfer between the two areas.

Parameters

NameDescription
Power flow
S_bSystem base power [V.A]
V_bSending end bus voltage [V]
Transformer parameters
SnPower rating [V.A]
VnVoltage rating [V]
rTResistance (transformer base) [1]
xTReactance (transformer base) [1]
mOptional fixed tap ratio
Phase controller
prefDesired power flow [1]
KpProportional gain
KiIntegral gain
TmMeasurement time constant [s]
alpha_maxMaximum phase angle [rad]
alpha_minMinimum phase angle [rad]
Initialization
pmes0Initial measured power flow [1]
alpha0Initial phase shifting angle [rad]

Connectors

NameDescription
n 
p 

OpenIPSL.Electrical.Branches.PSAT.ULTC_VoltageControl OpenIPSL.Electrical.Branches.PSAT.ULTC_VoltageControl

Under Load Tap Changer, continuous model, secondary voltage control

Parameters

NameDescription
Power flow data
S_bSystem base power [V.A]
Vbus1Sending end Bus nominal voltage [V]
Vbus2Receiving end Bus nominal voltage [V]
Transformer data
SnPower rating [V.A]
VnVoltage rating [V]
rTTransformer resistance(transformer base) [1]
xTTransformer reactance(transformer base) [1]
Voltage control
v_refReference voltage [1]
v_0Initial voltage magnitude of the controlled bus [1]
kTNominal tap ratio (V1/V2)
m0Initial tap ratio [pu/pu]
m_maxMaximum tap ratio [pu/pu]
m_minMinimum tap ratio [pu/pu]
HIntegral deviation [1]
KInverse time constant [1/s]

Connectors

NameDescription
p 
n 
Automatically generated Mon Oct 10 14:35:55 2022.