The Look Ahead dialog box contains tabs and tables that display event and device-related information. The information provided on the Look Ahead dialog box are described below:
When operating in Real Time with Web Switching enabled, the step recording tool will also be displayed at the top of the Look Ahead Dialog. Step recording tools include Switching Sheets, Standalone Safety Documents, Event Details Steps tab, and the Miscellaneous Log. This label will be hidden in Study mode if no tool is actively recording Study actions.
• The Device : Device Type field displays the name of the device being operated followed by the device type.
• The Phases to operate field displays the phases of the device being operated.
Buttons
• Run Power Flow: allows you to generate a Power Flow solution for the device. If the device's island is configured to solve using kVA mode, the Power Flow Results tab will display (kVA); if it is configured to solve in Power Flow mode, it will display (Power Flow). The Power Flow Results are displayed at the top of the Look Ahead dialog box. If any violations occurred during the run, the Violations Tab tab is enabled and the violations are listed.
• For example, if you open a tie switch and then click the Run Power Flow button, the Power Flow Results pane displays the Breaking Current amps, the voltage difference, and the number of violations.
• See Chapter 12, Power Flow for more information about Power Flow. The button is only available if Power Flow is licensed for your system.
• Preview: allows you to generate a trace in Viewer that highlights the area affected by the device operation. For example, if you open a device and click the Preview button, the Viewer displays the network area that will be de-energized.
Note: The Preview button is only enabled when the network is going to be de-energized. When the Look Ahead is closed (by confirming the operation or clicking Cancel), the trace highlighting will be removed.
Drop Count Tab
The Drop Count tab displays the number of customers affected by the device operation. This tab provides information for Total Customers and total Critical Customers, with sub counts for four groups of critical customers.
• The Drop columns display the drop information for the device. Information is displayed as counts dropped downstream of the device.
• The Feeder column display the total counts for the feeder on which the device to operate is located.
• The first set of Drop and Feed columns shows data for the total counts.
• The following three sets (A, B, and C) show data for each individual phase.
• The next set shows counts for multi‑phase customers. The counts for the individual phases (A, B, C) and multi‑phase add up to the counts in the first or total columns (that is, A+B+C+Multi‑Phase = Total).
• The last row shows the total distributed generation kVA for each phase. This is only available when Power Flow is licensed.
Pickup Count Tab
The Pickup Count tab displays the number of customers affected by the device operation. This tab provides information for Total Customers and total Critical Customers, with sub counts for four groups of critical customers.
• The first set of two columns shows data for the total counts. The following three sets of two columns show data for each individual phase (A, B, and C), with the last set showing counts for multi‑phase customers. The counts for the individual phases (A, B, C) and multi‑phase will add up to the counts in the "total" columns (that is, A+B+C+Multi‑Phase = Total).
• The Pickup columns display the pickup information for the device. Information is displayed as counts picked up downstream of the device.
• The Feeder columns display the total counts for the feeder on which the device to operate is located.
ATO Customers Tab
The ATO Customers tab displays the number of customers affected by automatic ATO operations as a result of the device operation. These customers are not listed in the Counts table.
On loss of the primary feed:
• The ATO Customers page lists customers downstream from a pair of enabled ATO switches with a live secondary feed, because they will experience a momentary outage.
• The ATO Customers page does not list customers downstream from a pair of ATOs if either the primary or secondary switch is disabled. These customers appear on the Counts table, because they will experience a sustained outage.
• The ATO Customers page does not list customers downstream from a pair of ATOs if the secondary feed is already lost. These customers appear on the Counts table, because they will experience a sustained outage.
On restoration of the primary feed:
• The ATO Customers page lists de-energized customers who will be auto-returned if the secondary feed is already lost.
• The ATO Customers page lists currently energized customers who will be auto-returned if the ATO is configured as a "break before make" on auto-return.
• The ATO Customers page does not list currently energized customers who will be auto-returned if the ATO is configured as a "make before break" on auto-return.
Similarly to the Counts table, the ATO Customers table provides information for total Critical Customers with sub counts for three types of critical customers, Interrupting Current (phase), and Total Customers.
The first column shows data for the total counts. The following three columns show data for each individual phase (A, B, and C), with the last set showing counts for multi-phase customers. The counts for the individual phases (A, B, C) and multi-phase will add up to the counts in the "total" columns (that is, A+B+C+Multi-Phase=Total).
The rows displayed in the counts table include Crit Customers, EMR Customers, MED Customers, KEY Customers, Interrupting Current and total customers. Click on the View ATO Custs button to access ATO Customer information from any of the other views.
View Conditions Tab
The View Conditions tab shows any special conditions currently active on the circuit, including crew locations, tags, notes, and so on. If conditions are present, you must view the conditions table to complete the operation. Click on the View Conditions tab to access condition information.
The Conditions table displays the following columns:
• The Condition column displays the type of condition that is present on the feeder such as a truck_location (crew), tag, note, and so on.
• The Device column displays the name of the device on which the condition is located.
• The Location column indicates whether the condition is upstream or downstream of the current device.
• The User Name column displays the user name of the user that created the condition.
• The Date/Time column displays the date and time that the condition was created.
• The Description column displays information about the condition. For example, if the operation affects a device with an associated document, the file name would be listed.
View Abnormal Tab
The View Abnormal tab displays data about abnormal devices on the same feeder as the device to operate. An “abnormal device” is any device that is not in its nominal state (for example, an open device that is normally closed).
The Abnormal table displays the following columns:
• The Device column displays the name of the device that is in an abnormal state.
• The Nominal Status column displays the normal status of the device.
• The Current Status column displays the current status of the device.
View Critical Tab
The View Critical tab shows customers classified as critical (for example, emergency, medical, key) that would be impacted by the proposed device operation.
The Critical Customers table displays the following columns:
• The Name column displays the critical customer's name.
• The Critical Type column displays the critical classifications for the customer.
• The Address column displays the critical customer's address.
• The Phone column displays the critical customer's telephone number.
View Cap. and Reg. Tab
The View Cap. and Reg. tab displays capacitors and regulators on the same feeder as the device to operate. The View Cap. and Reg. table displays the following columns:
• The Device column displays the name of the capacitor or regulator.
• The Location column indicates whether the device is upstream or downstream of the current device.
• The Phase column displays the phases of the capacitor or regulator.
Violations Tab
The Violations tab displays a list of all violations reported by Power Flow the last time Power Flow was run on this device. If Power Flow has not been run or no violations were encountered, this tab is grayed out.
Click the Run Power Flow button on the Look Ahead dialog box to run Power Flow. The Power Flow results are displayed at the top of the dialog box. If violations are encountered during the run, the Violations Changes tab is enabled and the violations are listed in the violations table.
Actions
• The Violations tab provides a ViewerTarget button () to focus the Viewer on the device in a selected row.
• The Violations table may be printed by clicking the Print button ().
The Violations table displays the following columns:
• The Substation column displays the substation name.
• The Feeder column displays the feeder name.
• The Nominal kV column displays the normal operating voltage of the device.
• The Device column displays the device name.
• The Violation column displays the violation or warning name. See “Data Source and Data Quality” for range of values and colors for this column.
• The Phase column displays the phase that the violation is on.
• The Value Before column displays the value before the action.
• The % Before column displays the ratio of the value before to the limit.
• The Value After column displays the value after the action.
• The % After column displays the ratio of the value after the action to the limit.
• The Limit column displays the violation/warning limit.
• The Status column displays the result of the action on the violation.
• Removed: the violation has been removed by the action.
• Added: a new violation will be added due to the action.
• Better: changed from violation to warning after the action or the percent decreased (increased for under voltage violations/warnings) more than the threshold.
• Worse: changed from warning to violation after the action or which percent increased (decreased for under voltage violations/warnings) more than the threshold.
• Same: violations that exist in both lists and have values that did not change or the change was less than the threshold.
Three context menus enable filtering of the table data:
• Violations Only, Warnings Only, or Violations and Warnings
• Changes, After, or Before:
• Changes: only shows changed violations resulting from the action.
• Before: shows the violations before the action.
• After: shows the violations after the action.
Note: The Violations tab label changes based on the Changes|Before|After choice. Also the violation counts displayed will change based on the combination of the drop-down list options selected (for example, Warnings Only / Before or Violations Only / After, and so on).
• Violation Types: Protection, Conductor, Distributed Generation, Power Transformer, Distribution Transformer, Switch, Voltage, Backfeed, and Feeder Capacity. Each violation type displays the violation and warning count in parenthesis when you click the context menu.
Each violation change has a specific background and font color-code:
The View DER tab displays data about distributed energy resources (DER) on the same feeder as the device to operate.
The DER table displays the following columns:
• The Device column displays the name of the DER device.
• The Rated Size (kVA) column displays the rating of the device.
• The Unit Count column displays the number of units the device represents.
• The Phase column displays the phases of the DER device.
• The Location column indicates whether the DER device is upstream or downstream of the current device.
Buttons
• The Open button opens the device. If an "open" operation is being performed on a closed device, the Open button is enabled. If special conditions exist, then you must view the View Conditions tab before the Open button becomes enabled. Likewise, if abnormal device statuses exist, then you must view the View Abnormal tab before the Open button becomes enabled.
• The Close button closes the device. If a "close" operation is being performed on an open device, the Close button is enabled. If special conditions exist, then you must view the View Conditions tab before the Close button becomes enabled. Likewise, if abnormal device statuses exist, then you must view the View Abnormal tab before the Close button becomes enabled.
• The Help... button opens the online help content for Look Ahead.
• The Cancel button cancels the device operation and closes the Look Ahead dialog box.
DMS Setting Tab
DMS Settings tab displays the list of feeders involved in the operation with their DMS settings, such as FLISR Mode Disabled (see “DMS Settings” for details). The settings are configured using the Configuration Assistant Feeder Management tab; see Using the Feeder Management Tab on page 24-32 for details. The tab includes the following information:
The tab is enabled for real time mode and allows user to change the settings for Optimization and FLISR for any or all of the involved feeders from this tab. The changes to DMS settings can be saved by clicking the Save button (). This will also send a message to the Power Flow service, which is called PFService, to reload the feeder settings for processing on its applications. The settings can be refreshed or reloaded by clicking the Refresh button ().
Selecting Columns to Display in the Table
You can choose which columns to display in the table. To select columns to display, follow these steps:
1. Right-click the table header row and select Select Columns… from the context menu. A list of the columns is displayed.
• Selected columns are displayed in the table.
• Deselected columns are hidden.
2. Select or deselect columns to show or hide them, respectively.
3. Click OK.
Associating Documents with Devices
The Manage Documents window allows Administrative users to create and remove associations between modeled device and documents that are stored in the Oracle Utilities Network Management System.