Electrical Modelling Norms
DCH BRICK 1.2 conventions for Electrical systems, equipment and modules.
Last updated
DCH BRICK 1.2 conventions for Electrical systems, equipment and modules.
Last updated
MAY: condition is permitted SHOULD: condition is recommended if possible MUST: condition is required MUST NOT: condition is forbidden
Note this section refers to some of DCH's BRICK 1.2 extension classes described earlier.
brick:feeds : for electrical systems, brick:feeds is used to indicate that two electrical equipment instances are electrically connected. If equipment A is closer to the utility point-of-connection than equipment B, then :A brick:feeds :B . This convention is followed regardless of direction of physical energy transfer. Electrical Equipment only ever feed other Equipment; they never feed Locations. Electrical Equipment can only be fed by other Electrical Equipment
brick:hasLocation : for electrical equipment, the location of the physical device.
brick:isPartOf : for electrical equipment, indicates a device is 'part of' another bigger device.
Any brick:Electrical_Meter MAY feed another brick:Electrical_Meter, a brick:Electrical_Circuit, or some other equipment.
A brick:Electrical_Circuit or other equipment SHOULD have a location (brick:hasLocation), or locations, if they are known.
An Electrical_Meter that is close to the point of connection and which feeds all other equipment on a site MUST have the type brick:Site_Electrical_Meter. This infers that nothing can feed the Site_Electrical_Meter.
An Electrical_Meter that is not a brick:Site_Electrical_Meter, and which feeds a whole building (and feeds no other buildings), MUST have the type brick:Building_Electrical_Meter. This infers that if there are no Site_Electrical_Meter, nothing else can feed the Building_Electrical_Meter.
An Electrical_Meter that meters only a generation installation MUST have type brick:Electrical_Generation_Meter.
An Electrical_Meter meters only a storage installation MUST have type brick:Electrical_Storage_Meter.
An Electrical_Meter that does not fit a more specific type MUST have the type brick:Electrical_Meter.
A Building_Electrical_Meter MUST feed a top-level Electrical_Circuit, which has the Building itself as its location.
Other circuits, meters or equipment in a building MUST be attached to the building's top level circuit by a feeds relationship.
brick:Electrical_Circuit MAY be used to represent other electrical pathways (circuits, loops, cables, busses, risers, etc).
An Electrical_Meter of any type MUST NOT feed a location.
A meter's location is optional, but if set MUST be the true location of the meter instrument itself (not the location of the CT / shunt / thing being metered / etc).
A meter MAY be partOf some larger equipment.
A generation installation MUST be represented by the most suitable class of Inverter:
for a conventional solar inverter, use a brick:Solar_Inverter
for an inverter with both solar and battery capabilities, use a brick:Hybrid_Inverter
for any other type of generation, use a brick:Inverter
A solar generation installation SHOULD have solar panels modelled (eg :inverter123 brick:feeds :panel123).
A generation installation composed of multiple inverters MAY be modelled as a single inverter entity if their number is unknown; otherwise they MUST be modelled as separate entities.
An array of electrically connected solar panels MUST be represented by at least one brick:Solar_Panel instance; it MAY be represented by multiple discrete panels if their details are known.
A battery storage system MUST be represented by the most suitable class:
for an inverter with both solar and battery capabilities, a brick:Hybrid_Inverter MUST be used.
for a battery with integrated inverter, a brick:AC_Battery MUST be used.
for a battery plus inverter combination where details are known, a brick:Battery_Inverter_Charger and separate brick:Battery SHOULD be used.
for a battery plus inverter combination where details are unknown, a single brick:AC_Battery MAY be used to represent the ensemble.
Any Electrical_Equipment which has self-metering capability SHOULD model suitable Points (even if the stream IDs are unknown).
Electrical equipment (including meters, storage and generation types) MUST have their location set to the most specific true location (site, building, floor, room) if known.
The location of electrical equipment (including meters, storage and generation types) does not imply electrical connection to that location's other electrical assets.
