Table: CONSTRAINTRELAXATION_OCD

CONSTRAINTRELAXATION_OCD

Name

CONSTRAINTRELAXATION_OCD

Comment

CONSTRAINTRELAXATION_OCD contains details of interconnector constraints and unit ancillary service constraints relaxed in the over-constrained dispatch (OCD) re-run for this interval (if there was one).
Note: INTERVENTION is not included in CONSTRAINTRELAXATION_OCD, since the relaxation of the same constraint is the same amount in both intervened and non-intervened cases.


Description

Source

The occurrences of Over-Constrained Dispatch (OCD) re-runs are ad hoc, with significant dependencies on the configuration or events in the physical power system.

Over-constrained dispatch (OCD) re-run (if there was one).

Volume

Rows per day: ~2

Mb per month: <1

The estimates on the number of rows are based on a 1% occurrence rate for OCD runs.


Primary Key Columns

Name

CONSTRAINTID

RUNNO

SETTLEMENTDATE

VERSIONNO


Index Columns

Name

LASTCHANGED


Content

Name

Data Type

Mandatory

Comment

SETTLEMENTDATE

DATE

X

End date and time of the dispatch interval

RUNNO

NUMBER(3,0)

X

Dispatch run no

CONSTRAINTID

VARCHAR2(20)

X

Constraint identifier

RHS

NUMBER(16,6)

 

Relaxed RHS used in attempt to avoid constraint violation

LASTCHANGED

DATE

 

Last date and time record changed

VERSIONNO

NUMBER(3,0)

X

Version Number


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