A short article to note that (as was the case on Sunday 13th, on Monday 14th, on Tuesday 15th, on Wednesday 14th, and on Thursday 15th, but notably not on Friday 16th (i.e. yesterday)) there is curtailment of rooftop PV occurring in South Australia today.
Let’s start with a snapshot of NEMwatch at the 09:45 dispatch interval here:
Focused in the Market Notice window was MN103678 at 08:56 this morning noting that…
‘——————————————————————-
MARKET NOTICE
——————————————————————-
From : AEMO
To : NEMITWEB1
Creation Date : 19/11/2022 08:56:36
——————————————————————-
Notice ID : 103678
Notice Type ID : MARKET INTERVENTION
Notice Type Description : Reserve Contract / Direction / Instruction
Issue Date : 19/11/2022
External Reference : Distributed PV Contingency 3 (DPVC3) in the SA Region on 19/11/2022
——————————————————————-
Reason :
AEMO ELECTRICITY MARKET NOTICE
Distributed PV curtailment is occurring in the SA region to maintain system security due to a Distributed PV Contingency condition.
The instruction to maintain demand above the required threshold is expected to end at 1600 hrs 19/11/2022
Manager NEM Real Time Operations
——————————————————————-
END OF REPORT
——————————————————————-’
This followed from MN103667 earlier today at 08:34 which said:
‘________________________________________________________________________________________________
Notice ID 103667
Notice Type ID Reserve Contract / Direction / Instruction
Notice Type Description MARKET
Issue Date Saturday, 19 November 2022
External Reference Distributed PV Contingency 2 (DPVC2) in the SA Region on 19/11/2022
________________________________________________________________________________________________
AEMO ELECTRICITY MARKET NOTICE
AEMO has taken action(s) to maintain power system security in South Australia at 0830 hrs 19/11/2022 due to a forecast Distributed PV Contingency (DPVC) condition.
AEMO actions may include the recall of planned outages, a direction and/or instruction to scheduled and non-scheduled generation, and/or an instruction to maintain DPV generation below a secure DPV generation threshold.
Manager NEM Real Time Operations’
… and this in turn followed MN103649 at 17:12 yesterday afternoon:
‘——————————————————————-
MARKET NOTICE
——————————————————————-
From : AEMO
To : NEMITWEB1
Creation Date : 18/11/2022 17:12:51
——————————————————————-
Notice ID : 103649
Notice Type ID : GENERAL NOTICE
Notice Type Description : Subjects not covered in specific notices
Issue Date : 18/11/2022
External Reference : Update – DPV Contingency 1 (DPVC1) in the SA Region on 19/11/2022
——————————————————————-
Reason :
AEMO ELECTRICITY MARKET NOTICE
AEMO has detected there is an elevated risk of the contingent disconnection of Distributed PV (DPV) with the loss of scheduled generation exceeding secure thresholds in the South Australia region from 1030 hrs 19/11/2022 to 1630 hrs 19/11/2022. The maximum forecast DPV contingency is 208 MW at 1300 hrs and the DPV contingency direction trigger is 78 MW.
AEMO is seeking a market response.
An insufficient market response may require AEMO to take action or intervene to maintain power system security in South Australia. This may result in action such as the direction of scheduled generation, curtailment of non-scheduled wind generation, and/or an instruction to maintain DPV generation below a secure DPV generation threshold.
AEMO estimates the latest time at which it may need to intervene through an AEMO intervention event is 0900 hrs on 19/11/2022
Manager NEM Real Time Operations
——————————————————————-
END OF REPORT
——————————————————————-’
That’s all for now…
Be the first to comment on "Curtailment of rooftop PV occurring in South Australia on Saturday 19th November 2022"