Market Notices

AEMO ELECTRICITY MARKET NOTICE

Refer to Market Notice 78621

AEMO has completed a further review of the system normal voltage stability limit for loss of all APD potlines for flows from Victoria to New South Wales. The revised limit is the result of improved reactive modelling in southern NSW which could potentially mean higher transfers into NSW under some generation/load scenarios.

The revised constraint equation includes generators in southern NSW and hydro generation at Mt. Beauty on the left-hand side as well as VIC1-NSW1. Full details on the limits advice are to be published on 11/02/2021 on the AEMO website: https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/system-operations/congestion-information-resource/limits-advice

The constraint is most likely to bind when there is low Vic demands and high transfers to NSW. When it binds it will restrict Vic to NSW transfers and Hume NSW unit.

This revised limit will be implemented to the following constraint equation at 1000 hrs Thursday 11th February 2021.
V^^N_NIL_1

For further details on this constraint equation please contact terry.liu@aemo.com.au

Terry Liu
AEMO Operations

AEMO ELECTRICITY MARKET NOTICE

AEMO's weather service provider has issued forecast temperatures equal to or greater than the NEM Local Temperature Alert Levels for listed weather stations below.

SA
Clare High School (39+ Deg C): 11th Feb
Port Augusta Ap (39+ Deg C): 10th Feb, 11th Feb

VIC
Mildura Ap (39+ Deg C): 11th Feb

The NEM Local Temperature Alert Levels are:

Launceston Ti Tree Bend: 33 Deg C, Dalby Airport: 37 Deg C, for all other selected weather stations: 39 Deg C.

AEMO requests Market Participants to:

1. review the weather forecast in the local area where their generating units / MNSP converter stations are located and,

2. if required, update the available capacity in their dispatch offers or availability submissions consistent with the forecast temperatures.

Further information is available at:

https://aemo.com.au/energy-systems/electricity/national-electricity-market-nem/nem-forecasting-and-planning/forecasting-and-reliability/projected-assessment-of-system-adequacy/nem-local-temperature-alerts

AEMO Operations Planning

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Bayswater 500/330 kV TIE1 Transformer - NSW region - 10/02/2021

At 09:15 hrs there was an unplanned outage of Bayswater 500/330 kV TIE1 Transformer.

The following constraint set was invoked at 09:25 hrs 10/02/2021
N-BWTX

This constraint set contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
NSW1 - QLD1
VIC1- NSW1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: QLD1

Lines: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV

Cancellation time: 10/02/2021 00:13

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 82812

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Cancellation time: 10/02/2021 00:13

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 82813

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE VIC1 Region Tuesday, 9 February 2021

AEMO declared a schedule generating unit non-conforming

Unit: YWPS3
Duration: 09/02/2021 22:15 to 09/02/2021 23:10
Amount: 45 MW
Constraint: NC-V_YWPS3

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Duration: 09/02/2021 23:09 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: QLD1

Lines: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV

Duration: 09/02/2021 23:09 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1930 hrs on 9 February 2021

PRICES ARE NOW CONFIRMED for dispatch interval 09-Feb-2021 19:05.

In accordance with Market Notice 82795 AEMO has reviewed this dispatch interval and determined that:
- Manifestly Incorrect Inputs did not apply

Prices remain unchanged.


This is an AEMO autogenerated Market Notice.