Abbreviations and meanings

Abbreviation

Description

Abn

Australian Business Number

Acct

Account

amdq (mdq)

Authorised Maximum Daily Quantity

Ap

Ancillary Payment

Bal

Balance

Bus

Business

Calc

Calculation

Checksum

Single digit value calculated to verify no corruption of received (mirn) data has occurred

Churn

Change of data from on party to next

Comms

Communication

Cont

Contestable

Cq

Calculated Quantity

Cum

Cumulative

Edd

Effective Degree Day

Eod

End of Day

evp (mda)

Energy Values Provider. (Meter Data Agent)

dtssp

Declared Transmission System Service Provider

Factor

t

r

These are part of the MCE Factors, specifically:

Temperature of pipelines (t factor)

Ideal gas constant (r factor)

Fds

Forecast Demand System

Freq

Frequency

Fro

Financially Responsible Organisation

Gj

Gigajoule (1000mj)

gas_date

Period of time, 6:00 AM of calendar day to 6:00 AM of next calendar day

gst (gst_ex)

Goods and Services Tax (exempt/excluded)

host_retailer

Default Retailer prior to transfer

Hv

Heating Value

Id

Identifier

Inj

Injection

Linepack

Amount of gas effectively stored in transmission pipes

Max

Maximum

Mdq

Maximum Daily Quantity

Min

Minimum

Mirn

Meter Installation Registration Number

Mj

Megajoule (1000j)

Mod

Modified

Mp

Market participant

Ms

Market Schedule

node (nodal)

a location generally representing a CTM or group of CTMs

Nsl

Net System Load

Os

Operational Schedule

Pcf

Pressure Correction Factor

Pmts

Payments

Qty

Quantity

ramp_down/ ramp_up

The rate at which injection or withdrawal rates can change up (ie ramp_up) or down (ie ramp_down) each hour of the gas day.

Reinj

Re-Injection. Gas that is injected back into the transmission system after it has been recorded as being withdrawn

Rtu

Remote Terminal Unit

Sdpc

Supply and Demand Point Constraints

Subs

Substitute

swz

Withdrawal Zones (swz) defined in the System Security Procedures at which a threat to system security may be located in the Declared Transmission System.

tdoc or trans_doc

Transmission Document

Ti

Trading Interval. Hour Part number of a gas day (e.g. 1 = 6:00 AM EST, 2 = 7:00 AM EST thru to 24 = 5:00 AM of next calendar day)

Tj

Terajoule (1,000 gj or 1,000,000 mj)

Tuos

Transmission Use Of System

Txn

Transaction

Uafg

Unaccounted For Gas

uafg_adj

Value that has been adjusted for UAFG

Uplift

Generic term to refer to Uplift process which balance Ancillary Payments in the Declared Transmission System.

url

A Uniform Resource Locator (URL), colloquially termed a web address

Voll

Value of Lost Load (voll) represents the market price cap for the Victorian Declared Transmission System.

wd or wdr or wdl

Withdrawal

Yld

Yield