SPDINTERCONNECTORCONSTRAINT

SPDINTERCONNECTORCONSTRAINT contains details on the interconnector constraint factors used in dispatch, predispatch and STPASA. The details set a LHS value.

SPDINTERCONNECTORCONSTRAINT is public data, and is available to all participants.

Source

SPDINTERCONNECTORCONSTRAINT updates whenever new connection point constraints are created.

Column Schema

EFFECTIVEDATE

Effective date of this record

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

This column is mandatory, and a primary key.

Example: 2026/09/01 00:00:00

Note that AEMO represents dates as datetimes with a midnight time component.

GENCONID

Generic Constraint Identifier

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

This column is mandatory, and a primary key.

Examples:

#R036715_001_RAMP_F
#R036715_001_RAMP_V
#R036715_002_RAMP_F
#R036715_002_RAMP_V
#R036715_003_RAMP_F
#R036715_003_RAMP_V
#R036717_001_RAMP_F
#R036717_001_RAMP_V
#R036717_002_RAMP_F
#R036717_002_RAMP_V

INTERCONNECTORID

Interconnector Identifier

SQL Type: VARCHAR2(10) Polars Type: pl.Categorical

This column is mandatory, and a primary key.

Examples:

N-Q-MNSP1
NSW1-QLD1
T-V-MNSP1
V-S-MNSP1
V-SA
VIC1-NSW1

VERSIONNO

Version no of this record for the effective date

SQL Type: NUMBER(3,0) Polars Type: pl.UInt16

This column is mandatory, and a primary key.

Example: 1

FACTOR

Constraint factor

SQL Type: NUMBER(16,6) Polars Type: pl.Float64

This column is not mandatory.

Examples: -0.156, 0.151, -1, 0.9963

LASTCHANGED

Last date and time record changed

For more information, see the dedicated documentation page.

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

This column is not mandatory.

Example: 2026/09/01 03:10:57

New Data Timing

When a new connection point constraint is created

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"

# Dates are represented as datetimes at midnight

d_fmt = "%Y/%m/%d 00:00:00"

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("LASTCHANGED").str.strptime(pl.Datetime, dt_s_fmt),
        pl.col("EFFECTIVEDATE").str.strptime(pl.Date, d_fmt),
    )
    .cast(
        {
            "EFFECTIVEDATE": pl.Date(),
            "GENCONID": pl.Categorical,
            "INTERCONNECTORID": pl.Categorical,
            "VERSIONNO": int,  # or pl.UInt16
            "FACTOR": pl.Float64,
        }
    )
    # Deduplicate
    # We want one row per ['EFFECTIVEDATE', 'GENCONID', 'INTERCONNECTORID', 'VERSIONNO']
    # Tie-breaker: greatest value of ['LASTCHANGED']
    .sort(["LASTCHANGED"], descending=False)
    .unique(
        subset=["EFFECTIVEDATE", "GENCONID", "INTERCONNECTORID", "VERSIONNO"],
        keep="last",
    )
)

Nemosis

from nemosis import dynamic_data_compiler

df = dynamic_data_compiler(
    '2024/01/01 00:00:00',
    '2024/01/31 00:00:00',
    "SPDINTERCONNECTORCONSTRAINT",
    "data/"
)

Example File

From PUBLIC_ARCHIVE_SPDINTERCONNECTORCONSTRAINT_FILE01_202609010000.zip

Table without MetadataTable with MetadataRaw Text without Metadata

INTERCONNECTORID	EFFECTIVEDATE	VERSIONNO	GENCONID	FACTOR	LASTCHANGED
NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_001_RAMP_F	0.506	2026/09/01 03:10:57
NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_001_RAMP_V	0.506	2026/09/01 03:10:57
N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_002_RAMP_V	0.211	2026/09/01 03:10:57
N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_003_RAMP_V	0.319	2026/09/01 03:10:58
NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_003_RAMP_V	0.255	2026/09/01 03:10:58
N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_003_RAMP_F	0.319	2026/09/01 03:10:58
NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_003_RAMP_F	0.255	2026/09/01 03:10:58
N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_002_RAMP_F	0.211	2026/09/01 03:10:58
V-S-MNSP1	2026/09/01 00:00:00	1	CA_SYDS_59A889E5_1	-0.4667	2026/09/01 08:12:55
V-SA	2026/09/01 00:00:00	1	CA_SYDS_59A889E5_1	-0.1706	2026/09/01 08:12:55
V-S-MNSP1	2026/09/01 00:00:00	1	V>>BELMLCB_BAML_TGML	-0.457	2026/09/01 11:37:27
...

C	SETP.WORLD	DVD_SPDINTERCONNECTORCONSTRAINT	AEMO	PUBLIC	2026/10/09	16:34:05	001791527645869	MONTHLY_ARCHIVE	001791527645869
I	SPDICC	NULL	1	INTERCONNECTORID	EFFECTIVEDATE	VERSIONNO	GENCONID	FACTOR	LASTCHANGED
D	SPDICC	NULL	1	NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_001_RAMP_F	0.506	2026/09/01 03:10:57
D	SPDICC	NULL	1	NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_001_RAMP_V	0.506	2026/09/01 03:10:57
D	SPDICC	NULL	1	N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_002_RAMP_V	0.211	2026/09/01 03:10:57
D	SPDICC	NULL	1	N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_003_RAMP_V	0.319	2026/09/01 03:10:58
D	SPDICC	NULL	1	NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_003_RAMP_V	0.255	2026/09/01 03:10:58
D	SPDICC	NULL	1	N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_003_RAMP_F	0.319	2026/09/01 03:10:58
D	SPDICC	NULL	1	NSW1-QLD1	2026/09/01 00:00:00	1	#R036715_003_RAMP_F	0.255	2026/09/01 03:10:58
D	SPDICC	NULL	1	N-Q-MNSP1	2026/09/01 00:00:00	1	#R036715_002_RAMP_F	0.211	2026/09/01 03:10:58
D	SPDICC	NULL	1	V-S-MNSP1	2026/09/01 00:00:00	1	CA_SYDS_59A889E5_1	-0.4667	2026/09/01 08:12:55
D	SPDICC	NULL	1	V-SA	2026/09/01 00:00:00	1	CA_SYDS_59A889E5_1	-0.1706	2026/09/01 08:12:55
D	SPDICC	NULL	1	V-S-MNSP1	2026/09/01 00:00:00	1	V>>BELMLCB_BAML_TGML	-0.457	2026/09/01 11:37:27
...
C	END OF REPORT	1003

INTERCONNECTORID,EFFECTIVEDATE,VERSIONNO,GENCONID,FACTOR,LASTCHANGED
NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_001_RAMP_F,0.506,"2026/09/01 03:10:57"
NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_001_RAMP_V,0.506,"2026/09/01 03:10:57"
N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_002_RAMP_V,0.211,"2026/09/01 03:10:57"
N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_V,0.319,"2026/09/01 03:10:58"
NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_V,0.255,"2026/09/01 03:10:58"
N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_F,0.319,"2026/09/01 03:10:58"
NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_F,0.255,"2026/09/01 03:10:58"
N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_002_RAMP_F,0.211,"2026/09/01 03:10:58"
V-S-MNSP1,"2026/09/01 00:00:00",1,CA_SYDS_59A889E5_1,-0.4667,"2026/09/01 08:12:55"
V-SA,"2026/09/01 00:00:00",1,CA_SYDS_59A889E5_1,-0.1706,"2026/09/01 08:12:55"
V-S-MNSP1,"2026/09/01 00:00:00",1,V>>BELMLCB_BAML_TGML,-0.457,"2026/09/01 11:37:27"
...

Raw Text with Metadata

C,SETP.WORLD,DVD_SPDINTERCONNECTORCONSTRAINT,AEMO,PUBLIC,2026/10/09,16:34:05,001791527645869,MONTHLY_ARCHIVE,001791527645869
I,SPDICC,NULL,1,INTERCONNECTORID,EFFECTIVEDATE,VERSIONNO,GENCONID,FACTOR,LASTCHANGED
D,SPDICC,NULL,1,NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_001_RAMP_F,0.506,"2026/09/01 03:10:57"
D,SPDICC,NULL,1,NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_001_RAMP_V,0.506,"2026/09/01 03:10:57"
D,SPDICC,NULL,1,N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_002_RAMP_V,0.211,"2026/09/01 03:10:57"
D,SPDICC,NULL,1,N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_V,0.319,"2026/09/01 03:10:58"
D,SPDICC,NULL,1,NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_V,0.255,"2026/09/01 03:10:58"
D,SPDICC,NULL,1,N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_F,0.319,"2026/09/01 03:10:58"
D,SPDICC,NULL,1,NSW1-QLD1,"2026/09/01 00:00:00",1,#R036715_003_RAMP_F,0.255,"2026/09/01 03:10:58"
D,SPDICC,NULL,1,N-Q-MNSP1,"2026/09/01 00:00:00",1,#R036715_002_RAMP_F,0.211,"2026/09/01 03:10:58"
D,SPDICC,NULL,1,V-S-MNSP1,"2026/09/01 00:00:00",1,CA_SYDS_59A889E5_1,-0.4667,"2026/09/01 08:12:55"
D,SPDICC,NULL,1,V-SA,"2026/09/01 00:00:00",1,CA_SYDS_59A889E5_1,-0.1706,"2026/09/01 08:12:55"
D,SPDICC,NULL,1,V-S-MNSP1,"2026/09/01 00:00:00",1,V>>BELMLCB_BAML_TGML,-0.457,"2026/09/01 11:37:27"
...
C,"END OF REPORT",1003

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 1 of 2015. The most recent available data is month 9 of 2026.

Every month in between has a file. (No gaps.)

Data Size

Each year of data is approximately 583 KB when zipped, 6 MB as unzipped CSV.

Deduplication and PDR Loader Configuration

The primary keys are:

EFFECTIVEDATE
GENCONID
INTERCONNECTORID
VERSIONNO

The transaction type is "insert", which means that you will usually not see duplicate data. If you do, you can deduplicate based on the primary keys, without sorting first. Rows from different files with the same primary keys should have the same values.

PDR Loader configuration is:

Report Name	Report Subtype	Version
SPDICC	NULL	1

This means that the CSV files start with metadata columns:

I,SPDICC,NULL,1,...
D,SPDICC,NULL,1,...

Indexes

LASTCHANGED

Links

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: GENERIC_CONSTRAINT