Possible Fault Locations Section

Table Data

• The Status column contains the status of the fault location: Possible Fault, Confirmed Fault-Out, or Fault Incorrect.

• The Fault Type column contains the fault type: Phase A to Ground, Phase A to Phase C, and so on.

• The Fault Device column contains the fault device name.

• The Phases column contains the faulted phases.

• The Location column contains distance from the device to the upstream switch.

• The Total Distance column is the total number of feet from the device that reported fault current.

• The Coordinate column contains the coordinate of the predicted fault. If the model is configured to be spatially enabled, this column will convert the GIS coordinates to latitude/longitude. (See "Spatially Enabling the Data Model for Advanced Spatial Analytics" in chapter 8, System Data Model, of the Oracle Utilities Network Management System Configuration Guide for details.)

Context Menu

If you right-click to select a row in the Possible Fault Locations section, the context menu displays the following options:

• Confirm Fault: Marks the device as Confirmed and marks all other devices in the list as Incorrect (not the correct fault location). See “Confirming Fault Locations”.

• Mark Incorrect: Marks the devices as Incorrect (not the correct fault location). See “Marking Fault Locations as Incorrect”.

• Correct Fault…: Displays the Correct Fault Location window, which allows you to manually edit the fault location. See “Correcting a Fault Location”.

• View...: Displays the selected device in the Viewer.

• Isolate and Restore...: Opens the Suggested Switching Wizard to isolate the faulted area and restore the rest of the feeder. See the “Isolate and Restore...” description in the Actions Menu section for details.

Confirming Fault Locations

To confirm a fault location:

1. Select the device you want to confirm from the Possible Fault Location section on the Fault Location Analysis window. (See “Using the Fault Location Analysis Tool”.)

2. Right-click and select Confirm Fault from the option menu. The selected device is marked as Confirmed and all other devices in the list are marked as Incorrect.

The Confirmed Fault changes from

in the Viewer. The other Incorrect faults disappear from the Viewer.

Note: The options are also available when you right-click a fault location symbol in the Viewer.

Marking Fault Locations as Incorrect

To mark a possible fault location as incorrect:

1. Select the device you want to mark as incorrect from the Possible Fault Location section on the Fault Location Analysis window. (See “Using the Fault Location Analysis Tool”.)

2. Click the right mouse button and select Mark Incorrect from the context menu. The selected device is marked as Incorrect and disappears from the Viewer.

Note: The options are also available when you right-click a fault location symbol in the Viewer.

Correcting a Fault Location

If none of the possible fault locations is correct, you can select the closest one and then correct the fault location details. The system creates a new fault location with the corrected information.

To correct a fault location:

1. Select the closest fault location from the Possible Fault Location section on the Fault Location Analysis window. (See “Using the Fault Location Analysis Tool”.)

2. Right‑click and select Correct Fault… from the context menu. The Correct Fault Location window is displayed. The Status of the new fault location is set to Corrected Fault and is not editable.

3. Enter the correct values for the following fields:

• Fault Type - The specific fault type, such as Phase A to Ground or Phase C to Phase A.

• Fault Device - The faulted object. This is the device alias for the conductor selected in the Viewer.

• Distance - The distance to the referenced device.

Note: The reference device field populates with the first upstream switch. The system automatically displays the first upstream switch for the selected fault device. You can reference a different device by selecting the device in the Viewer and clicking the Change Reference Device button on the Correct Fault Location dialog box; the Select Reference Device dialog box is displayed. The system populates the Reference Device field with the selected device in the Select Reference Device dialog box. Click OK to accept this device or click Cancel if this is not the correct device.

• Description - A brief description of the fault. This text will be displayed in a balloon dialog box on the Possible Fault Locations table for Corrected Fault rows.

4. Click OK. All existing fault locations are flagged as incorrect, and a new location is added that matches your entries.

A new fault location symbol appears in the Viewer at the location indicated by the Distance and Reference Device fields. Any existing fault location symbols in the Viewer are removed.

Note: The options are also available when you right-click a fault location symbol in the Viewer.

Isolate and Restore Option for a Confirmed Fault

When a fault location has been confirmed, the Isolate and Restore option allows you to use Suggested Switching to generate a switching plan to isolate the faulted section and restore the rest of the feeder.

Note: You must have privileges for DMS applications in Study Mode to have access to the Isolate and Restore option.

1. In the Possible Fault Locations table, select the row with the confirmed fault.

2. Select Isolate and Restore... from either the Actions menu or right-click to select it from the context menu. If you already have an active study session, the Reset Study Session dialog box will open.

3. In the Reset Study Session dialog box, click Yes to reset the study session to the real-time parameters. The Viewer will update to show the fault location and the Suggested Switching wizard will open with Isolate and Restore selected. See Chapter 13, Suggested Switching for details.

Manually Entering Fault Current from the Control Tool

You may manually enter SCADA fault data to have FLA calculate a fault location.

1. Launch the Control Tool for the breaker.

2. Click the Fault Current... button.

3. In the Fault Current dialog box, enter the SCADA fault current data.

4. Click OK to close the dialog box and initiate the FLA calculation.

A new Fault event will be initiated and the fault indicators will be displayed in the Viewer.

Note: Click Cancel to close the Fault Current dialog box without initiating a FLA calculation.

Configuring Global FLA

A global configuration for FLA is available by selecting DMS Settings and then FLA Mode from the Web Workspace Tools menu. See DMS Settings on page 2-7 for details.

Configuring Individual Feeders for FLA

FLA Mode (Disabled, Sustained, or Momentary and Sustained) can be set for individual feeders in the Configuration Assistant's Feeder Management tab. See Using the Feeder Management Tab on page 24-32 for details.

Global FLA Versus Individual Feeder FLA Configuration

The final configuration of FLA on a feeder is the least permissive possible. The following tables show the behavior of FLA for momentary and sustained outages based on the FLA mode.

For Momentary Outages

Global	Feeder	Result
Disabled	Disabled	FLA does not run
Disabled	Sustained	FLA does not run
Disabled	Momentary and Sustained	FLA does not run
Sustained	Disabled	FLA does not run
Sustained	Sustained	FLA does not run
Sustained	Momentary and Sustained	FLA does not run
Momentary and Sustained	Disabled	FLA does not run
Momentary and Sustained	Sustained	FLA does not run
Momentary and Sustained	Momentary and Sustained	FLA runs and shows all DMS Statuses with (M).