Summary:

The Ground Wire Management System (GWMS) is an intelligent electronic device (IDE) that manages temporary ground wires in substations and power plants. GWMS ensures correct ground wire is being used for different voltage level and identifies each ground wire and its assigned positions (locked/released/grounded) in real-time. GWMS prevents the common switching mistake - energizing when still grounded.

Mountain View, California, April 14, 2013

GWMS enforces the rules and standards of ground wires management. Ground wires are locked in the GWMS cabinet and can only be released with proper authentication. GWMS ensures correct ground wire is being used for different voltage level and identifies each ground wire and its assigned positions (locked/released/grounded) in real-time Here is a standard work procedure for GWMS:

1.Simulate switching steps on a workstation, e.g. install ground wire #1 at grounding point A.

2.Transfer switching order to the Smart Key.

3.Open GWMS cabinet using the Smart Key.

4.Release ground wire #1 from cabinet using the Smart Key, while other ground wires remain in locked state.

5.Unlock the locking device installed at grounding point A.  By the use of RFID verification, the Smart Key enforces that the switching personnel is at the correct grounding location.

6.Install ground wire at grounding point A