Protection Coordination
 

Application Overview:

• See Protection Coordination Setup for details on user input options for this application.

• For general details on running an application, selecting and displaying output variables, see Running DEW Applications.  

• The Available Output Variables for the application are described in the last section of this topic.

Protective Device Coordination involves the analysis of two protective devices (i.e. Fuses, Reclosers, Relays) together and the relationship between the devices.   The Protection Coordination Design application interfaces with other applications to provide results concerning protection or coordination of existing distribution circuits, allowing user to evaluate or design protection systems and analyze independent of the circuit.  Also, for a given circuit, it allows querying to find all devices that will coordinate with a given device.  The application offers many input variations, enabling user to interactively modify coordination rules that impact design or performance of the protection system.  In addition, users are able to graphically plot TCC (Time-Current Characteristic) Curve combinations and visually inspect coordination ranges between devices.

The supplied database library includes approximately 2000 TCC curves and 540 device types (i.e. fuses, reclosers, and relays).  The user can transfer this information from the library to the corresponding parts tables.

• The application Setup dialog provided the user with the following capabilities:

• Control and adjustment of Coordination parameters via user specified Scaling Factors.

• Interactive Coordination Tool to assist with Device Replace of Non-Coordinate Devices.

• Interactive Coordination Selection and Testing of Protecting and Upstream Protective devices.

• Adjust a generic type of protective device (which can be protecting, upstream, or any other device) that needs to interrupt the fault.

• Generate reports.

Application Run / Results:

Running the interactive Protection Coordination application opens the setup dialog, which is detailed in the Protection Coordination Setup topic.  After the setup parameters have been accepted, the Protection System Design command center dialog opens.

Available Output Variables:

For general details on running an application, selecting and displaying output variables, see Running DEW Applications.  The output variables available for display from the Load Estimation application are described in the following table.