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84864PRICES SUBJECT TO REVIEW30/04/2021 01:50:11 AM
[EventId:202104300155_review] Prices for interval 30-Apr-2021 01:55 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0150 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:55.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0150 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:55.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
84863PRICES SUBJECT TO REVIEW30/04/2021 01:45:11 AM
[EventId:202104300150_review] Prices for interval 30-Apr-2021 01:50 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0145 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:50.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0145 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:50.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
84862PRICES SUBJECT TO REVIEW30/04/2021 01:40:14 AM
[EventId:202104300145_review] Prices for interval 30-Apr-2021 01:45 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0140 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:45.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0140 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:45.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
84861PRICES SUBJECT TO REVIEW30/04/2021 01:35:10 AM
[EventId:202104300140_review] Prices for interval 30-Apr-2021 01:40 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0135 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:40.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0135 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:40.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
84860PRICES SUBJECT TO REVIEW30/04/2021 01:30:14 AM
[EventId:202104300135_review] Prices for interval 30-Apr-2021 01:35 are subject to review
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0130 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:35.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0130 hrs on 30 April 2021
PRICES ARE SUBJECT TO REVIEW for dispatch interval 30-Apr-2021 01:35.
AEMO is reviewing these prices in accordance with:
- Clause 3.9.2B of the National Electricity Rules for Manifestly Incorrect Inputs
This is an AEMO autogenerated Market Notice.
84859MARKET INTERVENTION29/04/2021 06:28:03 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The combination of synchronous generating units currently expected to be synchronised in SA from 0000 hrs 01/05/2021 will not provide sufficient system strength in SA to maintain the power system in a secure operating state.
In the absence of sufficient market response AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0000 hrs 01/05/2021 to maintain power system security in SA. Refer to current Transfer Limit Advice for SA system strength on the AEMO website.
If necessary, AEMO will estimate and publish the latest time at which AEMO would need to intervene after the 1230 hrs Pre-dispatch run on the 30/04/2021.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The combination of synchronous generating units currently expected to be synchronised in SA from 0000 hrs 01/05/2021 will not provide sufficient system strength in SA to maintain the power system in a secure operating state.
In the absence of sufficient market response AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised from 0000 hrs 01/05/2021 to maintain power system security in SA. Refer to current Transfer Limit Advice for SA system strength on the AEMO website.
If necessary, AEMO will estimate and publish the latest time at which AEMO would need to intervene after the 1230 hrs Pre-dispatch run on the 30/04/2021.
Manager NEM Real Time Operations
84858MARKET INTERVENTION29/04/2021 05:57:38 PM
Direction - SA region 29/04/2021
AEMO ELECTRICITY MARKET NOTICE.
Direction - SA region 29/04/2021
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 18:05 on 29/04/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
Direction - SA region 29/04/2021
In accordance with section 116 of the National Electricity Law, AEMO has issued a direction to a participant in the SA region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a).
The direction was necessary to maintain the power system in a secure operating state.
AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled.
The issue of the direction commences an AEMO intervention event. AEMO declares all dispatch intervals during the event to be intervention dispatch intervals, commencing from the interval ending 18:05 on 29/04/2021.
Intervention pricing does not apply to this AEMO intervention event.
Manager NEM Real Time Operations
84856MARKET INTERVENTION29/04/2021 02:33:11 PM
Possible intervention to manage power system security in South Australia (SA) Region
AEMO ELECTRICITY MARKET NOTICE
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0930 hrs 30/04/2021 to 1500 hrs 30/04/2021 in Pre-dispatch published at 1400 hrs 29/04/2021 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1800 hrs 29/04/2021, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
Possible intervention to manage power system security in South Australia (SA) Region
The synchronous generating units expected to be synchronised in SA from 0930 hrs 30/04/2021 to 1500 hrs 30/04/2021 in Pre-dispatch published at 1400 hrs 29/04/2021 are inadequate to maintain sufficient system strength in SA and hence a secure operating state.
AEMO currently estimates that, in the absence of sufficient market response by 1800 hrs 29/04/2021, AEMO may need to intervene by issuing a direction requiring one or more SA synchronous generating unit(s) to operate or remain synchronised to maintain power system security in SA.
Manager NEM Real Time Operations
84855RECLASSIFY CONTINGENCY28/04/2021 04:43:21 PM
Cancellation - Reclassification of a Non-Credible Event as a Credible Contingency Event due to demolition works near high voltage switchyard - Vic region
Cancellation - Reclassification of a Non-Credible Event as a Credible Contingency Event due to demolition works near high voltage switchyard - Vic region
AEMO no longer considers the simultaneous trip of the following circuits to be likely and reasonably possible. Accordingly AEMO has cancelled the reclassification as a credible contingency event.
Lines HWPS - YPS No.1 and No.2 220 kV lines
Cancellation time: 1635 hrs 28/04/2021
Constraint set revoked:
V-HWYP_R_N-2
Refer AEMO Electricity Market Notice 84854
Manager NEM Real Time Operations
AEMO no longer considers the simultaneous trip of the following circuits to be likely and reasonably possible. Accordingly AEMO has cancelled the reclassification as a credible contingency event.
Lines HWPS - YPS No.1 and No.2 220 kV lines
Cancellation time: 1635 hrs 28/04/2021
Constraint set revoked:
V-HWYP_R_N-2
Refer AEMO Electricity Market Notice 84854
Manager NEM Real Time Operations