INT112 - Directional Flow Point Constraints (DFPC)

Trigger type	Event triggered
Published	Approval of Operating Schedule (AOS)
Audience	Public
Output file name	int112_v[n]_dfpc_[p]~yyyymmddhhmiss.csv

Report purpose

This report contains information on the directional flow point constraints (DFPCs) pertaining to the DTS Declared Transmission System (Victoria). Victoria’s gas transmission system, operated by AEMO.. Directional flow points are those points in the DTS where both injections and withdrawals can occur, and the key item of interest is the NET movement of gas.

DFPCs are part of the configuration of the network that can be manually changed by the AEMO Australian Energy Market Operator Schedulers, and form one of the inputs to the schedule generation process.

Traders can use this information to understand the network-based restrictions that will constrain their ability to offer gas to the market on a given day in the reporting window.

Audience notes

A report is produced each time an operational schedule (OS) is approved by AEMO. Therefore, it is expected that each day there will be at least 9 of these reports issued:

• 5 being for the standard current gas day schedules

• 3 being for the standard 1-day ahead schedules

• 1 being for the standard 2 days ahead schedule

Content notes

Each report contains details of the DFPCs that have applied and will apply to schedules run:

• on the previous gas day

• for the current gas day and

• for the next 2 gas days

Each DFPC has a unique identifier and applies to a single pair of MIRNs (an injection MIRN Metering Identification Reference Number. A unique number that identifies each gas meter. and a withdrawal MIRN).

Each row in the report contains details of one DFPC for one hour of the gas day, with hourly intervals commencing from the start of the gas day. That is, the first row for a DFPC relates to 06:00 AM.

This report will contain 24 rows for each DFPC for each gas day reported.

Data content

Name	Data Type	No Nulls	Primary Key	CQ	Comments
dfpc_id	integer	True	True	N	Id of the Constraint
injection_mirn	varchar 10	True	False	N	Injection mirn
withdrawal_mirn	varchar 10	True	False	N	Withdrawal mirn paired to injection mirn
commencement_date	varchar 20	True	False	N	e.g. 27 Jun 2006. Dates that mark the boundary of the application of the constraint
termination_date	varchar 20	True	False	N	e.g. 27 Jun 2006. Dates that mark the boundary of the application of the constraint
daily_max net_inj_qty_gj	integer	False	False	N
daily_max net_wdl_qty_gj	binary 10.	False	False	N
ti	integer	True	True	N	Time interval 1-24 (hour of the gas day)
hourly_max_net_inj_qty_gj	integer	False	False	N	1 value for each hour of the gas day
hourly_max_net_wdl_qty_gj	integer	False	False	N	1 value for each hour of the gas day
mod_datetime	varchar 20	True	False	N	DFPC creation/modification time stamp e.g. 07 Jun 2006 08:01:23
current_date	varchar 20	True	False	N	Date and time the report was produced e.g. 30 Jun 2005 1:23:56