BaseVoltage

This document is part of the grid modelling approach and details the grid model data requirements for data supplied by Dutch transmission and distribution system operators and describes in detail the Base Voltage.

Most of the terms in this document are used within the energy industry, particularly in standards like the IEC Common Information Model (CIM).

BaseVoltage: The BaseVoltage defines the nominal system voltage level for electrical equipment.

It is primarily used to categorize equipment (like ACLineSegments), group voltage levels, and perform calculations, such as load demand response based on nominal voltage.

In CIM, a Base Voltage is modelled with the cim:BaseVoltage object and is associated with the cim:ConductingEquipment, the cim:TransformerEnd, the cim:VoltageLevel container and the cim:TopologicalNode.

In CIM, it is common for the equipment in the cim:SubStation (the internal world) to be organized into voltage level containers (or indirectly in a bay, which in turn is related to a voltage level). The conducting equipment adopts the base voltage from the corresponding VoltageLevel association to the BaseVoltage.

An exception to this are the cim:(Power)Transformers, which are not part of one VoltageLevel and therefore require a direct association of cim:(Power)TransformerEnds to the BaseVoltage.

Particularly for distribution networks, the relevant equipment is located primarily outside the station (the external world), and direct associations of ConductingEquipment to BaseVoltage are necessary here as well. Conducting equipment, such as an cim:ACLineSegment, uses also the direct association ConductingEquipment to the BaseVoltage.