Market Notices

80506GENERAL NOTICE30/11/2020 10:42:12 AM

NEM Local Temperature Alerts for NSW, QLD, SA from 30 Nov 2020 to 04 Dec 2020

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.

NSW
Mudgee Ap (39+ Deg C): 1st Dec

QLD
Dalby Ap (37+ Deg C): 30th Nov, 1st Dec, 2nd Dec

SA
Port Augusta Ap (39+ Deg C): 30th Nov

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
80460GENERAL NOTICE28/11/2020 10:10:37 PM

Cancellation : Non-credible contingency event more likely to occur due to existence of abnormal conditions - SA region.

AEMO ELECTRICITY MARKET NOTICE.

Abnormal conditions advised in AEMO Electricity Market Notice 80415 have ceased to impact the likelihood of a non-credible event occurring as at 2210 hrs 28/11/2020

Constraint set I-VS_250 revoked at 2210 hrs.


Manager NEM Real Time Operations
80415GENERAL NOTICE28/11/2020 04:14:53 PM

Non-credible contingency event more likely to occur due to existence of abnormal condition/s - SA region.

AEMO ELECTRICITY MARKET NOTICE.

AEMO has identified that a non-credible contingency event is more likely to occur because of the existence of abnormal conditions namely severe weather in the SA region.

There is a possibility of severe weather impacting multiple transmission elements in its vicinity.

Conditions can change rapidly and potentially impacted plant may change. Further notices will only be published to advise of any reclassification, or when the abnormal conditions have ceased to impact the likelihood of a non-credible event occurring.

Constraint set I-VS_250 invoked at 1615 hrs 28/11/2020 until further notice.

Manager NEM Real Time Operations
80368GENERAL NOTICE27/11/2020 10:31:57 AM

NEM Local Temperature Alerts for NSW, QLD, SA, VIC from 27 Nov 2020 to 01 Dec 2020

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.

NSW
Mudgee Ap (39+ Deg C): 1st Dec
Sydney Observatory Hill (39+ Deg C): 29th Nov

QLD
Dalby Ap (37+ Deg C): 29th Nov, 30th Nov, 1st Dec

SA
Adelaide West Terrace (39+ Deg C): 27th Nov
Clare High School (39+ Deg C): 27th Nov, 28th Nov
Port Augusta Ap (39+ Deg C): 27th Nov, 28th Nov, 30th Nov

VIC
Mildura Ap (39+ Deg C): 27th Nov, 28th Nov

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
80339GENERAL NOTICE26/11/2020 11:24:45 AM

NEM Local Temperature Alerts for NSW, QLD, SA, VIC from 26 Nov 2020 to 30 Nov 2020

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.

NSW
Mudgee Ap (39+ Deg C): 29th Nov
Sydney Observatory Hill (39+ Deg C): 29th Nov

QLD
Dalby Ap (37+ Deg C): 29th Nov, 30th Nov

SA
Adelaide West Terrace (39+ Deg C): 27th Nov
Clare High School (39+ Deg C): 27th Nov, 28th Nov
Port Augusta Ap (39+ Deg C): 27th Nov, 28th Nov, 30th Nov

VIC
Mildura Ap (39+ Deg C): 27th Nov, 28th Nov

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
80319GENERAL NOTICE25/11/2020 11:43:54 AM

NEM Local Temperature Alerts for NSW, QLD, SA, VIC from 25 Nov 2020 to 29 Nov 2020

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.

NSW
Mudgee Ap (39+ Deg C): 29th Nov

QLD
Dalby Ap (37+ Deg C): 29th Nov

SA
Adelaide West Terrace (39+ Deg C): 27th Nov, 28th Nov
Clare High School (39+ Deg C): 27th Nov, 28th Nov
Port Augusta Ap (39+ Deg C): 25th Nov, 26th Nov, 27th Nov, 28th Nov

VIC
Mildura Ap (39+ Deg C): 27th Nov, 28th Nov

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
80277GENERAL NOTICE24/11/2020 11:07:02 AM

NEM Local Temperature Alerts for QLD, SA, VIC from 24 Nov 2020 to 28 Nov 2020

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.

QLD
Dalby Ap (37+ Deg C): 24th Nov

SA
Adelaide West Terrace (39+ Deg C): 27th Nov
Clare High School (39+ Deg C): 27th Nov, 28th Nov
Port Augusta Ap (39+ Deg C): 26th Nov, 27th Nov, 28th Nov

VIC
Mildura Ap (39+ Deg C): 27th Nov, 28th Nov

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
80276GENERAL NOTICE24/11/2020 10:04:38 AM

Planned outage of Moorabool - Mortlake 500 kV line in the Victoria region from 13 December 2020 to 21 December 2020

AEMO ELECTRICITY MARKET NOTICE

The Moorabool - Mortlake 500 kV line in the Victoria (VIC) region is planned to be out of service from 13/12/2020 1600 hrs to 21/12/2020 1600 hrs.

A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.

The credible separation contingency is managed as follows:

- When power transfer is from SA to Victoria, contingency lower FCAS will be sourced from SA.
- When power transfer is from Victoria to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
- Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.

Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.

The following constraint sets have been invoked for this outage:

S-X_BC_CP
V-MLMO

Refer to AEMO Network Outage Schedule (NOS) for further details.

Terry Liu
AEMO Operations
80275GENERAL NOTICE24/11/2020 10:01:45 AM

Planned outage of Moorabool - Haunted Gully 500 kV line in the Victoria region from 06 December 2020 to 13 December 2020

AEMO ELECTRICITY MARKET NOTICE

The Moorabool - Haunted Gully 500 kV line in the Victoria (VIC) region is planned to be out of service from 6/12/2020 1600 hrs to 13/12/2020 1600 hrs.

A credible contingency event during this planned outage could cause synchronous separation of the South Australia (SA) region from the rest of the NEM. If separation occurs, load may be interrupted due to the operation of the Automatic Under Frequency Load Shedding (AUFLS) scheme in SA.

The credible separation contingency is managed as follows:

- When power transfer is from SA to Victoria, contingency lower FCAS will be sourced from SA.
- When power transfer is from Victoria to SA, due to the 47-52Hz island separation frequency band advised by the SA jurisdiction, contingency raise FCAS is not sourced in SA and the AUFLS scheme may respond to low frequency events.
- Power transfer will be restricted on Victoria - South Australia interconnector (Heywood interconnector) to manage system security following the loss of the next contingency.

Forecast capacity reserves in the SA region are currently sufficient to meet electricity demand during the planned outage.

The following constraint sets have been invoked for this outage:

I-VS_050
S-X_BC_CP
V-APHY_1
V-HGML

Refer to AEMO Network Outage Schedule (NOS) for further details.

Terry Liu
AEMO Operations
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