Accounting Point Grid Location

The electrical (topological) location of an accounting point in the common grid model (Nemo). Since a controllable unit is always behind an accounting point, this also gives the grid location for all controllable units connected to that accounting point.

The connecting system operator (CSO) is responsible for registering and maintaining the grid location. Another system operator may also register a grid location, but only when the current entry is missing or has been set by the system or guessed by another system operator.

For more information about how grid location works and the data model behind it, see Accounting Point Grid Location.

Relevant links

Fields

Name	Description	Format	Reference
id	Unique surrogate key.	bigint Read only
accounting_point_id	The accounting point this grid location belongs to.	bigint Required Non-updatable	accounting_point.id
object_type	The type of object in the common grid model that the accounting point is at.	text One of: `substation`, `transformer` Required
business_id	Business identifier (mRID) referencing the object in the common grid model.	text Pattern: `^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$`
name	Name of the grid model object at the location.	text Required Max length: `512`
nominal_voltage	Nominal voltage level at the grid location, in kilovolt (kV).	decimal Required Min: `0` Max: `999999.999` Multiple of: `0.001`
additional_information	Free text field for extra information about the grid location if needed.	text
source	How the grid location was determined. When a system operator creates or updates a grid location, this field is set automatically: `cso` if the SO is the connecting system operator, `so` otherwise.	text One of: `cso`, `so`, `grid_model`, `system` Read only
quality	The quality of the grid location registration.	text One of: `confirmed`, `guessed` Required
recorded_at	When the resource was recorded (created or updated) in the system.	date-time Read only
recorded_by	The identity that recorded the resource.	bigint Read only

Validation Rules

Validation rule key	Validation rule	Status
APGL-VAL001	Updates to the grid location are only allowed based on the current `source` value. See transition table below.	DONE
APGL-VAL002	`quality=confirmed` is only permitted when `source` is `cso`, `so` or `grid_model`.	DONE

APGL-VAL001 source transition table

The table shows which new source values are permitted given the current value of the record. yes means the transition is allowed, no means it is denied.

Current ↓ \ New →	`grid_model`	`cso`	`so`	`system`
`grid_model`	yes	no	no	no
`cso`	yes	yes	no	no
`so`	yes	yes	yes	no
`system`	yes	yes	yes	yes
missing	yes	yes	yes	yes

Notifications

Action	Recipient	Comment
create, update	Connecting SO
create, update	Procuring SO on CU

Authorization

Resource Level Authorization

Below is the RLA for the resource. The default policy is deny.

Anonymous

No policies.

Common

No policies.

Balance Responsible Party

No policies.

End User

No policies.

Energy Supplier

No policies.

Flexibility Information System Operator

Policy key	Policy	Status
APGL-FISO001	Create, read and update all accounting point grid locations.	DONE
APGL-FISO002	Read all accounting point grid location history.	DONE

Organisation

No policies.

System Operator

Policy key	Policy	Status
APGL-SO001	Create, read and update accounting point grid locations where they are CSO, ISO or PSO.	DONE
APGL-SO002	Read history on accounting point grid locations where they are CSO, ISO or PSO.	DONE

Service Provider

No policies.

Third Party

No policies.

Field Level Authorization

For party type abbreviations, check the authentication docs.

FIELD	FISO	SO
id	R	R
accounting_point_id	RC	RC
object_type	RCU	RCU
business_id	RCU	RCU
name	RCU	RCU
nominal_voltage	RCU	RCU
additional_information	RCU	RCU
source	R	R
quality	RCU	RCU
recorded_at	R	R
recorded_by	R	R