Areas and Zones - statnett/Talk2PowerSystem GitHub Wiki

Task: https://github.com/statnett/Talk2PowerSystem_PM/issues/23

CIM uses various kinds of areas and zones. It's easy for an LLM to get confused with that variety, especially because a user is likely not to mention the precise authoritative zone kind in his/her question.

CIM/NCP Description Name example Transparency
GeographicalRegion "A geographical region of a power system network model." Typically represents countries, as required by CGMES. "NO" - which include the full Nordic Member State (Country), CTY
SubGeographicalRegion "A subset of a geographical region." Used for grouping substations for navigation or visualization purposes only. NO1 SGR N/A
ControlArea <"def to big to be included"> Represents the equipment under the control of a System Operator and is associated with operational power flow. NO CA (Norwegian Control Area) Control Area, CA=CTA
EnergyArea / LoadArea "The class is the root or first level in a hierarchical structure for grouping of loads for the purpose of load flow load scaling." Used for scaling the Load NO LA (Norwegian Load Area) N/A
SubLoadArea "The class is the second level in a hierarchical structure for grouping of loads for the purpose of load flow load scaling." Used for scaling the Load NO1 SLA (Norwegian Sub Load Area) N/A
BiddingZone "A bidding zone is a market-based method for handling power transmission congestion." Provide the energy prices NO1 (Norwegian Area 1 Bidding Zone) Bidding Zone, BZN
SchedulingArea "An area where production and/or consumption of energy can be forecasted, scheduled and measured." Provide the energy prices SA-NO1 (Scheduling Area for Norwegian Area 1 Bidding Zone) Scheduling Area, SCA

@Vladimir - can this be deleted?

  • Nordic44 BiddingZone vs SubGeographicalRegion vs EnergyCongestionZone (etc etc) vs
  • ENTSO-E defined Areas/Zones in the EIC file (eg Balancing Area, Member State, etc).

Data questions:

  • At M0 we had some old classes (namespace entsoe2).
  • NC defines new classes, but is the list complete?
  • Why "FI1" and "SE1" Subregions have parent Region "NO" (FI and SE may be part of the Nordics but are separate countries)?
  • What containment relations exist between areas? Demo1 Q1.4 AC Lines Crossing SubGeographicalRegions has a UML diagram showing that BiddingZone is made up of SchedulingAreas, but the data doesn't show that

ENTSO-E Areas

From Transparency Knowledge Graph spec:

The constituency of ENTSOE is broken up into a number of Domain/Area "meshes" according to different principles. See glossary#areas for a description of all kinds of Areas, and list of sources where we got this information from.

The following kinds of Areas are most important for Transparency because they are used in Data Items:

  • Bidding Zone, BZN: largest geographical area in which there is a uniform spot price, in which Market Participants can exchange energy without Capacity Allocation.
  • Control Area, CA=CTA: coherent part of the interconnected system, operated by a single system operator and shall include connected physical loads and/or generation units
  • Member State (Country), CTY: EU member state or a neighboring state (eg NO in the European Economic Area; SR and UA as neighboring states)
  • Market Balance Area, MBA: geographic area in which there is a uniform balancing energy price. Consists of one or more Metering Grid Areas with common market rules for which the settlement responsible party carries out a balance settlement and which has the same price for imbalance. May also be defined due to bottlenecks.
  • Scheduling Area, SCA: same as Bidding Zone, except if there is more than one Responsibility Area within this Bidding Zone. In the latter case, the Scheduling Area equals Responsibility Area or a group of Responsibility Areas.

TODO:

  • Make a table that maps ENTSO-E areas/zones to corresponding CIM classes in Nordic44 data
  • Add relevant relations from PSRs to zones