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DISPATCH_CONSTRAINT_FCAS_OCD

FCAS constraint solution from OCD re-run.

Column Schema

CONSTRAINTID

ConstraintID/GenconID

SQL Type: VARCHAR2(20) Polars Type: pl.Categorical

This column is mandatory, and a primary key.

Examples:

  • D_I+BIP_ML2_L1
  • D_I+NIL_MG2_R1
  • D_Q+BIP_ML_L1
  • D_Q+BIP_ML_L6
  • D_T+NIL_BB_TG_R1
  • D_T+NIL_MG_R1
  • D_T+NIL_ML_L1
  • D_T+NIL_ML_RECL_L1
  • D_T+NIL_TL_L1_DS
  • D_T+NIL_WF_TG_R1

INTERVENTION

Intervention 0/1

For more information, see the dedicated documentation page.

SQL Type: NUMBER(2) Polars Type: pl.Boolean

This column is mandatory, and a primary key.

Example: 0

SETTLEMENTDATE

Dispatch interval that the prices were loaded to

Warning

Despite what the name suggests, this is a datetime, not a date.

SQL Type: DATE Polars Type: pl.Datetime()

This column is mandatory, and a primary key.

Example: 2026/08/05 16:25:00

VERSIONNO

VersionNo

SQL Type: NUMBER(3) Polars Type: pl.UInt16

This column is mandatory, and a primary key.

Example: 1

RUNNO

Dispatch run no; always 1

This column only ever takes one value: 1

(The SQL type is NUMBER(3).)

AEMO marked this column as mandatory, and a primary key. However, since it only ever takes one value, you can ignore it.

LASTCHANGED

The datetime that the record was last changed

For more information, see the dedicated documentation page.

SQL Type: DATE Polars Type: pl.Datetime()

This column is not mandatory.

Example: 2026/08/05 16:20:14

MARGINALVALUE

marginalvalue from OCD re-run

SQL Type: NUMBER(15,5) Polars Type: pl.Float64

This column is not mandatory.

Examples: 0.01, 0, 19.92

RHS

RHS from OCD re-run

SQL Type: NUMBER(15,5) Polars Type: pl.Float64

This column is not mandatory.

Examples: -0.0001, 10.03286, 0, 1390

VIOLATIONDEGREE

The violation degree of this constraint in the solution result

SQL Type: NUMBER(15,5) Polars Type: pl.Float64

This column is not mandatory.

Example: 0

Code Examples

Polars

Casting is enums, categoricals etc is not essential, but may speed up parsing. Swapping int for pl.UInt16, pl.Int32 would also speed up parsing. However some of the datatypes are inferred, so they may be wrong.

This code deduplicates for you. Deduplication is normally only required across multiple months.

This code assumes that all columns are present, which may not be true for older files.

import polars as pl
import polars.selectors as cs

# e.g. "2029/03/15 00:05:00"
dt_s_fmt = "%Y/%m/%d %H:%M:%S"

csv_paths = ["SOMEFILE.CSV", "OTHERFILE.CSV"]

lf = (
    pl.concat(
        [
            pl.scan_csv(
                csv_path,  # must be unzipped beforehand
                skip_rows=1,  # skip the header
                infer_schema=False,  # much faster
            )
            .filter(cs.by_index(0) == "D")  # drop the footer
            .select(~cs.by_index(range(4)))  # drop metadata columns
            for csv_path in csv_paths
        ],
        how="diagonal_relaxed",
    )
    .with_columns(
        pl.col("SETTLEMENTDATE", "LASTCHANGED").str.strptime(pl.Datetime, dt_s_fmt),
    )
    # Polars can't cast string straight to bool. Need to go via something else.
    .cast({"INTERVENTION": pl.UInt8})
    .cast(
        {
            "CONSTRAINTID": pl.Categorical,
            "INTERVENTION": pl.Boolean,
            "VERSIONNO": int,  # or pl.UInt16
            "RUNNO": pl.Enum(["1"]),
            "MARGINALVALUE": pl.Float64,
            "RHS": pl.Float64,
            "VIOLATIONDEGREE": pl.Float64,
        }
    )
    # Drop deprecated/unused columns
    .drop("RUNNO")
    # Deduplicate
    # We want one row per ['CONSTRAINTID', 'INTERVENTION', 'RUNNO', 'SETTLEMENTDATE', 'VERSIONNO']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(
        subset=["CONSTRAINTID", "INTERVENTION", "RUNNO", "SETTLEMENTDATE", "VERSIONNO"],
        keep="last",
    )
)

Nemosis

This table is not yet available in Nemosis.

Example File

From PUBLIC_ARCHIVE_DISPATCH_CONSTRAINT_FCAS_OCD_FILE01_202608010000.zip

SETTLEMENTDATERUNNOINTERVENTIONCONSTRAINTIDVERSIONNOLASTCHANGEDRHSMARGINALVALUEVIOLATIONDEGREE
2026/08/05 16:25:0010D_I+BIP_ML2_L112026/08/05 16:20:14-1000000
2026/08/05 16:25:0010D_I+NIL_MG2_R112026/08/05 16:20:14-9940.402200
2026/08/05 16:25:0010D_Q+BIP_ML_L112026/08/05 16:20:14-9868.7397500
2026/08/05 16:25:0010D_Q+BIP_ML_L612026/08/05 16:20:14-9693.4227600
2026/08/05 16:25:0010D_T+NIL_BB_TG_R112026/08/05 16:20:14-9998.4803800
2026/08/05 16:25:0010D_T+NIL_MG_R112026/08/05 16:20:14-1000000
2026/08/05 16:25:0010D_T+NIL_ML_L112026/08/05 16:20:14-1000000
2026/08/05 16:25:0010D_T+NIL_ML_RECL_L112026/08/05 16:20:14-1000000
2026/08/05 16:25:0010D_T+NIL_TL_L1_DS12026/08/05 16:20:14-2000000
2026/08/05 16:25:0010D_T+NIL_WF_TG_R112026/08/05 16:20:14-1000000
2026/08/05 16:25:0010F_I+BIP_ML_L112026/08/05 16:20:14000
...

CSETP.WORLDDVD_DISPATCH_CONSTRAINT_FCAS_OCDAEMOPUBLIC2026/09/2513:28:00001790306880597MONTHLY_ARCHIVE001790306880597
IPRICELOADCONSTRAINT_FCAS_OCD1SETTLEMENTDATERUNNOINTERVENTIONCONSTRAINTIDVERSIONNOLASTCHANGEDRHSMARGINALVALUEVIOLATIONDEGREE
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_I+BIP_ML2_L112026/08/05 16:20:14-1000000
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_I+NIL_MG2_R112026/08/05 16:20:14-9940.402200
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_Q+BIP_ML_L112026/08/05 16:20:14-9868.7397500
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_Q+BIP_ML_L612026/08/05 16:20:14-9693.4227600
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_T+NIL_BB_TG_R112026/08/05 16:20:14-9998.4803800
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_T+NIL_MG_R112026/08/05 16:20:14-1000000
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_T+NIL_ML_L112026/08/05 16:20:14-1000000
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_T+NIL_ML_RECL_L112026/08/05 16:20:14-1000000
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_T+NIL_TL_L1_DS12026/08/05 16:20:14-2000000
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010D_T+NIL_WF_TG_R112026/08/05 16:20:14-1000000
DPRICELOADCONSTRAINT_FCAS_OCD12026/08/05 16:25:0010F_I+BIP_ML_L112026/08/05 16:20:14000
...
CEND OF REPORT417

SETTLEMENTDATE,RUNNO,INTERVENTION,CONSTRAINTID,VERSIONNO,LASTCHANGED,RHS,MARGINALVALUE,VIOLATIONDEGREE
"2026/08/05 16:25:00",1,0,D_I+BIP_ML2_L1,1,"2026/08/05 16:20:14",-10000,0,0
"2026/08/05 16:25:00",1,0,D_I+NIL_MG2_R1,1,"2026/08/05 16:20:14",-9940.4022,0,0
"2026/08/05 16:25:00",1,0,D_Q+BIP_ML_L1,1,"2026/08/05 16:20:14",-9868.73975,0,0
"2026/08/05 16:25:00",1,0,D_Q+BIP_ML_L6,1,"2026/08/05 16:20:14",-9693.42276,0,0
"2026/08/05 16:25:00",1,0,D_T+NIL_BB_TG_R1,1,"2026/08/05 16:20:14",-9998.48038,0,0
"2026/08/05 16:25:00",1,0,D_T+NIL_MG_R1,1,"2026/08/05 16:20:14",-10000,0,0
"2026/08/05 16:25:00",1,0,D_T+NIL_ML_L1,1,"2026/08/05 16:20:14",-10000,0,0
"2026/08/05 16:25:00",1,0,D_T+NIL_ML_RECL_L1,1,"2026/08/05 16:20:14",-10000,0,0
"2026/08/05 16:25:00",1,0,D_T+NIL_TL_L1_DS,1,"2026/08/05 16:20:14",-20000,0,0
"2026/08/05 16:25:00",1,0,D_T+NIL_WF_TG_R1,1,"2026/08/05 16:20:14",-10000,0,0
"2026/08/05 16:25:00",1,0,F_I+BIP_ML_L1,1,"2026/08/05 16:20:14",0,0,0
...

C,SETP.WORLD,DVD_DISPATCH_CONSTRAINT_FCAS_OCD,AEMO,PUBLIC,2026/09/25,13:28:00,001790306880597,MONTHLY_ARCHIVE,001790306880597
I,PRICELOAD,CONSTRAINT_FCAS_OCD,1,SETTLEMENTDATE,RUNNO,INTERVENTION,CONSTRAINTID,VERSIONNO,LASTCHANGED,RHS,MARGINALVALUE,VIOLATIONDEGREE
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_I+BIP_ML2_L1,1,"2026/08/05 16:20:14",-10000,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_I+NIL_MG2_R1,1,"2026/08/05 16:20:14",-9940.4022,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_Q+BIP_ML_L1,1,"2026/08/05 16:20:14",-9868.73975,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_Q+BIP_ML_L6,1,"2026/08/05 16:20:14",-9693.42276,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_T+NIL_BB_TG_R1,1,"2026/08/05 16:20:14",-9998.48038,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_T+NIL_MG_R1,1,"2026/08/05 16:20:14",-10000,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_T+NIL_ML_L1,1,"2026/08/05 16:20:14",-10000,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_T+NIL_ML_RECL_L1,1,"2026/08/05 16:20:14",-10000,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_T+NIL_TL_L1_DS,1,"2026/08/05 16:20:14",-20000,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,D_T+NIL_WF_TG_R1,1,"2026/08/05 16:20:14",-10000,0,0
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,"2026/08/05 16:25:00",1,0,F_I+BIP_ML_L1,1,"2026/08/05 16:20:14",0,0,0
...
C,"END OF REPORT",417

Availability

Visibility: Public

This table is in the public monthly MMSDM archive.

I have collated the list of all those files into one place, in this CSV metadata file. (Columns year, month, url, compressed_size in bytes).

The earliest available data is month 10 of 2024. The most recent available data is month 8 of 2026.

Warning

There are some months with no files.

Data Size

Each year of data is approximately 45 KB when zipped, 453 KB as unzipped CSV.

Deduplication and PDR Loader Configuration

The primary keys are:

The transaction type is "INSERT-UPDATE", which means that you will likely see duplicate data with different values.

You should deduplicate by sorting based on LASTCHANGED, within each group of primary keys.

PDR Loader configuration is:

Report Name Report Subtype Version
DISPATCHOCD CONSTRAINT_FCAS_OCD 1
PRICELOAD CONSTRAINT_FCAS_OCD 1

This means that the CSV files start with metadata columns:

I,DISPATCHOCD,CONSTRAINT_FCAS_OCD,1,...
D,DISPATCHOCD,CONSTRAINT_FCAS_OCD,1,...

or

I,PRICELOAD,CONSTRAINT_FCAS_OCD,1,...
D,PRICELOAD,CONSTRAINT_FCAS_OCD,1,...

ROW_FILTER_TYPE is LASTCHANGED

Indexes

This page as JSON (schema documented here, but may change)

Download a JSON Schema specification for this table.

Official AEMO schema documentation

Other Information

Package: DISPATCH