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Access the GAA Overview Page

This topic describes how to access the GAA Overview page, on which you can view all the information and perform various tasks related to Generation Availability Analyses.

By default, the information that appears on the GAA Overview page is related to all Hierarchy Levels. You can select to filter and view the information related to either of the following based on the sites to which you are assigned:

• All the GAA Units associated to a GAA Company: When you select a GAA Company in the Asset Hierarchy field, information related to all the GAA Units associated with all the GAA Plants within the selected GAA Company appears on the GAA Overview page.
• All the GAA Units associated to a GAA Plant: When you select a GAA Plant in the Asset Hierarchy field, information related to all the GAA Units associated with the selected GAA Plant appears on the GAA Overview page.
• A GAA Unit: When you select a GAA Unit in the Asset Hierarchy field, information related only to the selected GAA Unit appears on the GAA Overview page.

By default, the information on the GAA Overview page is displayed for a time period between the first day of the current year and the current date. You can modify the time period by selecting , and then specifying values in the Start Date and End Date fields.

The tasks that you can perform on this page differ depending on the Security Groups with which you are associated.

Steps

1. On the Meridium navigation menu, select Performance, and then select Generation Availability Analysis.

   Note: You can also access Generation Availability Analyses information associated with a functional location and its children. To do so:

   1. In the upper-left corner of the top navigation bar, select .

      The Asset Hierarchyappears.

   2. In the left pane, navigate to the function location for which you want to view the GAA Overview page.

   3. In the workspace, select the Performance tab.

      A list of types of performance related analyses performed on the selected functional location appears.

   4. Select the hyperlink for Generation Availability Analysis that specifies the number of Events Under Review, Approved Events, and Generation Reports generated for the selected functional location.

   The GAA Overview page appears, displaying the following information related to each GAA Unit for the specified period:

   • Events Under Review tab: Contains a list of Events that are being reviewed. The section contains the following columns of information:
     • Event ID: Contains the value from the Event ID field. You can select the link in the Event ID column to access the selected event.
     • Unit Name: Contains the value that you entered in Unit Name field to identify the GAA Unit to which the event occurred. You can select the link in the Unit Name column to access the Unit Summary workspace for the selected GAA Unit.
     • Event Type: Contains the value that you entered in Capacity Event Type field to identify the type of event.
     • Event Description: Contains the value that you entered in Capacity Event Type field to describe the event.
     • Start Date: Contains the value that you entered in the Event Start field to indicate the date and time that the event started.
     • End Date: Contains the value that you entered in the Event End field to indicate the date and time that the event ended.
   • Approved Events tab: Contains a list of Events that have been approved. The section contains the same columns of information as the Events Under Review tab.

   • Generation Reports tab: Contains a list of regulatory reports and links to generate management reports. The section contains the following columns of information:

     • Report ID: Contains the value that identifies the report.
     • Unit ID: Contains the value that identifies the GAA Unit.
     • Modified By: Contains the value that identifies the user who modified the reports.
     • Last Modified: Contains the time when the report was last modified.

     You can manage the Regulatory reports using the Manage Reports button.

   • General Performance Metrics graph: Contains a bar graph that shows the actual and maximum productivity of each GAA Unit for the specified period. The graph plots the following fields:
   • Gross Maximum Generation (MWh)
   • Gross Actual Generation (MWh)
   • Net Maximum Generation (MWh)
   • Net Actual Generation (MWh)

   The x-axis shows the name of each GAA Unit and y-axis shows the number of Megawatt Hours consumed by each of the GAA Unit.

   When you select a bar in the graph, the Unit Summary workspace for the associated GAA Unit appears in a new tab.

   • Events Causing Losses graph: Contains a doughnut graph that shows the sum of losses of each of the following type for each GAA Unit for the specified period:

     • Outages (MWH loss)
     • Derates (MWH loss)
     • Reserve Shutdown (MWH loss)

   • Count of Event Types graph: Contains a bar graph that shows the number of following types of events for each GAA Unit during the specified time:

     • Unplanned Deratings
     • Planned Deratings
     • Unplanned Outages
     • Planned Outages
     • Reserve Shutdown

     The x-axis shows the name of each GAA Unit and y-axis shows the number of events that occured at each of the GAA Unit.

     When you select a bar in the graph, the Unit Summary workspace for the associated GAA Unit appears in a new tab.

   • Event and Performance Reports Statistics section: Contains a grid that displays the values from all the fields available on the Detailed Loss Net MWh tab on the Performance datasheet for each GAA Unit for the specified period.

     

   While viewing any of the above charts, you can select in the upper-right corner of the chart to customize the appearance of the plot by using standard graph features.

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