ExternalNetworkInjection

Class Description

This class represents the external network and it is used for IEC 60909 calculations.

Attributes

Name Type Description
governorSCD ActivePowerPerFrequency Power Frequency Bias. This is the change in power injection divided by the change in frequency and negated. A positive value of the power frequency bias provides additional power injection upon a drop in frequency.
ikSecond Boolean Indicates whether initial symmetrical short-circuit current and power have been calculated according to IEC (Ik"). Used only if short circuit calculations are done according to superposition method.
maxInitialSymShCCurrent CurrentFlow Maximum initial symmetrical short-circuit currents (Ik" max) in A (Ik" = Sk"/(SQRT(3) Un)). Used for short circuit data exchange according to IEC 60909.
maxP ActivePower Maximum active power of the injection.
maxQ ReactivePower Maximum reactive power limit. It is used for modelling of infeed for load flow exchange and not for short circuit modelling.
maxR0ToX0Ratio Float Maximum ratio of zero sequence resistance of Network Feeder to its zero sequence reactance (R(0)/X(0) max). Used for short circuit data exchange according to IEC 60909.
maxR1ToX1Ratio Float Maximum ratio of positive sequence resistance of Network Feeder to its positive sequence reactance (R(1)/X(1) max). Used for short circuit data exchange according to IEC 60909.
maxZ0ToZ1Ratio Float Maximum ratio of zero sequence impedance to its positive sequence impedance (Z(0)/Z(1) max). Used for short circuit data exchange according to IEC 60909.
minInitialSymShCCurrent CurrentFlow Minimum initial symmetrical short-circuit currents (Ik" min) in A (Ik" = Sk"/(SQRT(3) Un)). Used for short circuit data exchange according to IEC 60909.
minP ActivePower Minimum active power of the injection.
minQ ReactivePower Minimum reactive power limit. It is used for modelling of infeed for load flow exchange and not for short circuit modelling.
minR0ToX0Ratio Float Indicates whether initial symmetrical short-circuit current and power have been calculated according to IEC (Ik"). Used for short circuit data exchange according to IEC 6090.
minR1ToX1Ratio Float Minimum ratio of positive sequence resistance of Network Feeder to its positive sequence reactance (R(1)/X(1) min). Used for short circuit data exchange according to IEC 60909.
minZ0ToZ1Ratio Float Minimum ratio of zero sequence impedance to its positive sequence impedance (Z(0)/Z(1) min). Used for short circuit data exchange according to IEC 60909.
p ActivePower Active power injection. Load sign convention is used, i.e. positive sign means flow out from a node.
Starting value for steady state solutions.
q ReactivePower Reactive power injection. Load sign convention is used, i.e. positive sign means flow out from a node.
Starting value for steady state solutions.
referencePriority Integer Priority of unit for use as powerflow voltage phase angle reference bus selection. 0 = don t care (default) 1 = highest priority. 2 is less than 1 and so on.
voltageFactor PU Voltage factor in pu, which was used to calculate short-circuit current Ik" and power Sk". Used only if short circuit calculations are done according to superposition method.

Relationships

Inherits from

Descendant classes

  • No descendant classes

Leaf/Root class

IsLeaf IsRoot
False False

Associations

None