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The following diagramme shows how the final Algo Bid is a composite of the Last Acknowledged Bid, The Last Acknowledged Manual Bid (reference bid) and the Modified Bid that was optimised by the solver, and which consumed the Reference Bid.
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Bid Process Trigger and Submission Scheduling
The trigger that begins the process of generating and validating an algo bid is the publication of a new 5min forecast (for example AEMO’s p5min). Once the algo bid is ready to be submitted, a scheduler is invoked whereby the set of algo bids are submitted at a predefined number of seconds into a dispatch interval. For example 240 seconds into the dispatch interval. The AEMO acknowledged timestamp will generally be 2-5 seconds after the scheduled bid time (for example 10:04:03).
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Bid Formulation and Submit Cycle
The Algorithms formulate a new Algo bid every five minutes irrespective of the status of the Submit Mode.
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Note that the mini sync occurs after the scheduler (and hence just before an algo bid is submitted). |
Conditions for submitting an Algo Bid
Before an Algo Bid is submitted pdBidr checks the following:
Is there a difference between the Algo Bid and the Active Acknowledged Bid? If Yes then:
Is Submit Mode ON? If Yes then:
Check for a new Reference Bid. Is there a new Reference Bid? If No then:
Submit Algo Bid!!
Note that all three checks must be validated before an Algo Bid will be submitted. Whatever happens pdBidr will repeat the cycle again.
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The first two validation checks are applied to each individual bid. For example if Submit Mode is OFF for an individual bid then only that bid is not submitted. However if there is a new reference bid detected then all bid from that solve will not be submitted. |
Synchronisation
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pdBidr synchronises with the eHub-API. This is a direct query to AEMO to check and download any new bids from third party systems. If a new manual rebid is detected then this bid becomes the Latest Manual Acknowledged Bid (Reference Bid). Mini Sync checks that there are no new AEMO identifiers without downloading new bids. A mini sync is performed because it is completed more quickly than a Sync.
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