Voltage Data Type

The power system resource's base voltage. Shall be a positive value and not zero.

Rated voltage (nameplate data, Ur in IEC 60909-0). It is primarily used for short circuit data exchange according to IEC 60909. The attribute shall be a positive value.

Phase-to-phase nominal voltage.

Phase-to-phase open circuit voltage magnitude used when voltage characteristics need to be imposed at the node associated with the terminal of the energy source, such as when voltages and angles from the transmission level are used as input to the distribution network. The attribute shall be a positive value or zero.

The target voltage for voltage regulation. The attribute shall be a positive value.

The voltage at which the nominal reactive power may be calculated. This should normally be within 10% of the voltage at which the capacitor is connected to the network.

The nominal voltage for which the coil is designed.

The highest operating voltage (Ub in IEC 60909-0) before short circuit. It is used for calculation of the impedance correction factor KT defined in IEC 60909-0. This is worst case voltage on the low side winding (3.7.1 of IEC 60909:2001). Used to define operating conditions.

The minimum operating voltage (uQmin in IEC 60909-0) at the high voltage side (Q side) of the unit transformer of the power station unit. A value well established from long-term operating experience of the system. It is used for calculation of the impedance correction factor KG defined in IEC 60909-0.

Rated voltage: phase-phase for three-phase windings, and either phase-phase or phase-neutral for single-phase windings. A high voltage side, as given by TransformerEnd.endNumber, shall have a ratedU that is greater than or equal to ratedU for the lower voltage sides. The attribute shall be a positive value.

The dc voltage at which the varistor starts conducting. It is used for short circuit calculations and exchanged only if SeriesCompensator.varistorPresent is true.

The bus bar's high voltage limit. The limit applies to all equipment and nodes contained in a given VoltageLevel. It is not required that it is exchanged in pair with lowVoltageLimit. It is preferable to use operational VoltageLimit, which prevails, if present.

The bus bar's low voltage limit. The limit applies to all equipment and nodes contained in a given VoltageLevel. It is not required that it is exchanged in pair with highVoltageLimit. It is preferable to use operational VoltageLimit, which prevails, if present.

Line-to-line converter voltage, the voltage at the AC side of the valve. It is converter’s state variable, result from power flow. The attribute shall be a positive value.

Converter voltage at the DC side, also called Ud. It is converter’s state variable, result from power flow. The attribute shall be a positive value.

The maximum voltage on the DC side at which the converter should operate. It is converter’s configuration data used in power flow. The attribute shall be a positive value.

The minimum voltage on the DC side at which the converter should operate. It is converter’s configuration data used in power flow. The attribute shall be a positive value.

Rated converter DC voltage, also called UdN. The attribute shall be a positive value. It is converter’s configuration data used in power flow. For instance a bipolar HVDC link with value 200 kV has a 400kV difference between the dc lines.

Valve threshold voltage, also called Uvalve. Forward voltage drop when the valve is conducting. Used in loss calculations, i.e. the switchLoss depend on numberOfValves * valveU0.

Target value for DC voltage magnitude. The attribute shall be a positive value.

Voltage at which the winding operates at the neutral tap setting. It is the voltage at the terminal of the PowerTransformerEnd associated with the tap changer when all tap changers on the transformer are at their neutralStep position. Normally neutralU of the tap changer is the same as ratedU of the PowerTransformerEnd, but it can differ in special cases such as when the tapping mechanism is separate from the winding more common on lower voltage transformers. This attribute is not relevant for PhaseTapChangerAsymmetrical, PhaseTapChangerSymmetrical and PhaseTapChangerLinear.

The voltage magnitude at the topological node. The attribute shall be a positive value.

Line-to-line voltage on the valve side of the converter transformer. It is converter’s state variable, result from power flow. The attribute shall be a positive value.

Voltage target in AC grid, at point of common coupling. The attribute shall be a positive value.

Rated voltage (nameplate data, Ur in IEC 60909-0). It is primarily used for short circuit data exchange according to IEC 60909. The attribute shall be a positive value.

The reactive power output of the SVC is proportional to the difference between the voltage at the regulated bus and the voltage setpoint. When the regulated bus voltage is equal to the voltage setpoint, the reactive power output is zero.

Rated DC device voltage. The attribute shall be a positive value. It is configuration data used in power flow.

The normal limit on voltage. High or low limit nature of the limit depends upon the properties of the operational limit type. The attribute shall be a positive value or zero.

Limit on voltage. High or low limit nature of the limit depends upon the properties of the operational limit type. The attribute shall be a positive value or zero.