ifference between revisions of "EMO:Logical Data Structure"
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'''''Dynamic Data:''''' Dynamic data described the state of the Modelled Items defined by the static data and changes rapidly over time, typically by Trading Period (e.g. Nodal Price) | '''''Dynamic Data:''''' Dynamic data described the state of the Modelled Items defined by the static data and changes rapidly over time, typically by Trading Period (e.g. Nodal Price) | ||
| + | |||
| + | ==Terminology== | ||
| + | ''EMarketOffer's'' data design consists of 'things' included in the model, and the characteristics of those 'things'. In this manual the 'things' are called '''Entities''' and their characteristics are called '''Traits.''' Traits may be static or dynamic. | ||
| + | |||
| + | For example the ''Circuit'' Entity can have the static Traits of ''Start Node'' and ''End Node'', and the dynamic Traits of ''Powerflow'' and Loss by Trading Period. | ||
| + | |||
| + | ---- | ||
| + | NOTE: : Static data is not permanently fixed and may, at times, be quite changeable, but within the context of ''EMarketOffer'' it is not necessary to be able to track such changes down to the Trading Period level. | ||
| + | ---- | ||
| + | |||
| + | ===Modelled Items=== | ||
| + | Four broad categories of item (Entity) are modelled in ''EMarketOffer:'' | ||
| + | {|class="wikitable" | ||
| + | ! Item Type !! Relate To | ||
| + | |- | ||
| + | | | ||
| + | :''System'' | ||
| + | | | ||
| + | :The physical Transmission System | ||
| + | |- | ||
| + | | | ||
| + | :''Market'' | ||
| + | | | ||
| + | :The routine operation of the wholesale Market (Offers, Load, Price) | ||
| + | |- | ||
| + | | | ||
| + | :''Commercial'' | ||
| + | | | ||
| + | :Generation Companies and their retail and hedging operations | ||
| + | |- | ||
| + | | | ||
| + | :''Geographical'' | ||
| + | | | ||
| + | :Physical points and regional positioning | ||
| + | |} | ||
Revision as of 09:21, 18 December 2012
EMarketOffer uses two broad types of data:
Static Data: Static data describes the Items Modelled in EMarketOffer (e.g. Generator maximum capacity).
Dynamic Data: Dynamic data described the state of the Modelled Items defined by the static data and changes rapidly over time, typically by Trading Period (e.g. Nodal Price)
Terminology
EMarketOffer's data design consists of 'things' included in the model, and the characteristics of those 'things'. In this manual the 'things' are called Entities and their characteristics are called Traits. Traits may be static or dynamic.
For example the Circuit Entity can have the static Traits of Start Node and End Node, and the dynamic Traits of Powerflow and Loss by Trading Period.
NOTE: : Static data is not permanently fixed and may, at times, be quite changeable, but within the context of EMarketOffer it is not necessary to be able to track such changes down to the Trading Period level.
Modelled Items
Four broad categories of item (Entity) are modelled in EMarketOffer:
| Item Type | Relate To |
|---|---|
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