Two Winding Transformer

Model of a two winding transformer. It is assumed, that node A is the node with higher voltage.

Attributes, Units and Remarks

Type Model

All impedances and admittances are given with respect to the higher voltage side. As obvious, the parameter can be used in T- as in 𝜋-equivalent circuit representations.

Attribute	Unit	Remarks
uuid
id		Human readable identifier
rSc	Ω	Short circuit resistance
xSc	Ω	Short circuit impedance
gM	nS	No load conductance
bM	nS	No load susceptance
sRated	kVA	Rated apparent power
vRatedA	kV	Rated voltage at higher voltage terminal
vRatedB	kV	Rated voltage at lower voltage terminal
dV	%	Voltage magnitude increase per tap position
dPhi	°	Voltage angle increase per tap position
tapSide		true, if tap changer is installed on lower voltage side
tapNeutr		Neutral tap position
tapMin		Minimum tap position
tapMax		Maximum tap position

Entity Model

Attribute	Unit	Remarks
uuid	–
id	–	Human readable identifier
operator	–
operationTime	–	Timely restriction of operation
nodeA	–	Higher voltage node
nodeB	–	Lower voltage node
parallelDevices	–	overall amount of parallel transformers to automatically construct (e.g. parallelDevices = 2 will build a total of two transformers using the specified parameters)
type	–
tapPos	–	Current position of the tap changer
autoTap	–	true, if there is a tap regulation apparent and active

Caveats

Nothing - at least not known. If you found something, please contact us!