Post-audit in ST Vista
A post-audit functionality has been added to ST Vista that enables the user to quickly execute a performance review of a previous period, typically one or more weeks. The audit determines the optimum operation for the period, and directly compares it to what was actually done. The audit can be confined to unit commitment, plant distribution, or can also include purchase and sale opportunities from the market (see 1st and 2nd screenshots).

Reserve “take”
A new optional calculation can be invoked to ensure that a reserve declaraction in fact be provided for a “take” of prescribed number duration (say two hours).

The existing reserve constraint calculation includes spinning (AGC “control” and non-AGC) and non-spinning components. The calculation at a minimum ensures that the capacity exists to momentarily meet the reserve on a capacity basis. However, it may not be able to be supplied for a finite period, based on water availability, constraint limitations, and avoidance of spillage. A new optional calculation can be invoked to ensure that a reserve declaraction in fact be provided for a “take” of prescribed number duration (say two hours).

Restructured user interface in ST Vista to display results
To facilitate access to schedule results in ST Vista, the display user interface has been re-structured using tabs for each variable (see 3rd screenshot).

Restart feature in AUTO
To avoid having to re-run a very long AUTO Vista analysis when the run is pre-maturely terminated (due to power or network faults), a new feature has been added to enable the user to re-start and resume a run at any time between the start date and the termination date. This is a long awaited feature for AUTO users and will be a great timesaver!

Reserves Integration
New integration functionality has been added to enable the user to dynamically change reserve requirements, by sending tagged data to the Vista import table on a real-time basis. This will be very useful to respond to dynamic changes in reserve from the ISO or due to wind generation variations.

Edit Custom Report
Values in ST Vista custom reports can now be edited (for input variables such as SCADA, load, price), and the edits will be propagated from the report back to the analysis environment. Furthermore, these edits will be (optionally) preserved from replacement from the dynamic data feed. For example, the load or price for the next three hours can be edited in the custom report, and these edits will be considered by ST Vista in the next opt; and also will not be “clobbered” when the next real-time data set is received. This simplifies the process of manually changing input data.