Dispatch Service Enhancement Project

DSE Transition Update - September 2020

Transpower and industry dispatch participants have been steadily progressing new dispatch service transitions since September 2019, and through the Covid-19 pandemic, to meet the 31 December 2020 deadline.

Four of the thirteen participants have transitioned from the legacy dispatch system (GENCO), three with ICCP block 2 protocol and one with Webservices over ICCP. Also, one of these participants has fully decommissioned their GENCO system. Two further participants are set to transition in the next few weeks.

There are a few things we like to make participants aware of:

Market Dispatch Integration Pack – the integration pack has been updated with further technical clarification, incl ICCP datatypes and datetime handling, and JWT token requirements to connect through Web Services. A full summary of the changes can be found on page 2 of the integration pack. You can request a copy of the integration pack by sending an email to Marije.Postma@transpower.co.nz
Transpower Christmas IT Change Freeze – We would like to draw your attention to Transpower’s usual IT change freeze between 16 December 2020 and 10 January 2021. GENCO users will need to have transitioned to one of the new dispatch channels prior to this change freeze to continue to meet their Code obligations.

We appreciate all the efforts all parties have made to date during these challenging times, and we look forward continuing the collaboration with participants progressing these transitions off GENCO.

If you have any queries or concerns, please contact the DSE Transition Project Manager, at Marije.Postma@transpower.co.nz

Project delivery was completed in August 2019

Transpower is updating its dispatch system and tools which will enable current GENCO participants to move to an alternate communication protocol for dispatch management.

Transpower is enabling dispatch over both ICCP or (RESTful) web services. These alternate dispatch protocols will allow participants who use ICCP to consolidate their communications, and enable smaller participants, for whom ICCP is not cost-effective, to be able to participate fully in the market and use a protocol that best fits their dispatch operation.

The New Zealand electricity market environment is changing with emerging business models, increasing uptake of new technologies and evolving market arrangements. In this developing environment, the project is also making configuration changes, which may serve as a stepping stone to the introduction of new dispatch products and functionality. This, in turn, may further increase market participation as the electricity market evolves.

Transpower deployed Web Services and ICCP block 2 dispatch capability on 8 August 2019. We are on schedule to deploy ICCP block 5 capability on 24 October 2019.

The Web Services online simulator will be made available end July 2019.

Key communication dates ahead of deployment on 8 August

Date	Deployment Activity	Participant Impact	Further Planned Communications
23-26 July during business hours	Updating EDF offline servers to have the DSE code installed but not used.	Participants using GENCO may notice intermittent momentary alarms for lost DMT connectivity.	CAN sent 22 July.
1 August approximately 11:00	First Market Database update.	Market System will be running from SAD for approximately 10 minutes. Bids and offers will back up at NZX and be processed when the outage is over	WITS email sent 25 July and reminder on the day.
7 August during business hours	Disabling offline EDF servers ready for main release on 8 August.	Participants using GENCO may notice intermittent momentary alarms for lost DMT connectivity.	CAN sent 6 August.
8 August 10:00 – 13:30	Main DSE release.	Transpower will switch Multi-provider Frequency Keeping (MFK) to Single-provider Frequency Keeping (SFK) mode from 10:00 until 13:00. HVDC Frequency Keeping Control (FKC) will remain enabled throughout. Market System will be running from SAD for approximately 60 minutes. Bids and offers will back up at NZX and be processed when the outage is over. RTP will be missed during this time, other schedules may be published late. There will be two short switches to SAD later in the day to confirm that the updated SAD works. During this time one RTP may be missed.	WITS email sent 31 July and CAN sent 6 August.
9 August during business hours	Updating remaining EDF servers to DSE configuration.	Participants using GENCO may notice intermittent momentary alarms for lost DMT connectivity.	CAN sent 6 August.
15 August 11:00 – 13:00 Final Deployment Activity	Post-deployment market system inter-site switchover.	Market System will be running from SAD for approximately 60 minutes. Bids and offers will back up at NZX and be processed when the outage is over. RTP will be missed during this time, other schedules may be published late. MFK will be enabled throughout this time.	WITS email sent 9 August.