Fault isolation and restoration scheme

A system, comprising:

• a first current interruption device configured to control current flow on a power line;
• and
• a first intelligent electronic device (IED), comprising:
• a memory;
• and
• a processor operatively coupled to the memory, wherein the processor is configured to execute instructions on the memory to cause operations comprising:
• receive, via a first input connected to a second IED, a first close permissive signal indicating that the first IED is permitted to close the current interruption device;
• determine that the first current interruption device is open and that a healthy voltage is present on the power line at the first IED;
• and
• close the first current interruption device to restore power to one or more loads of the second IED;
• wherein the process stored in the memory of the first IED is identical to the process stored in memory of the second IED to allow for easier connection or disconnection of IEDs, loads, or both from the power system.

A system, comprising:

• a first current interruption device configured to control current flow on a power line;
• a second current interruption device configured to control current flow on the power line;
• and
• a first intelligent electronic device (IED), comprising:
• a first current sensor;
• a first communication port associated with the first current sensor and the first current interruption device;
• a second current sensor;
• a second communication port associated with the second current sensor and the second current interruption device, wherein the first IED monitors one or more loads between the first and second current sensors;
• a memory;
• and
• a processor operatively coupled to the memory, wherein the processor is configured to execute instructions on the memory to cause operations comprising:
• receive, via a first input connected to a second IED, a first close permissive signal indicating that the first IED is permitted to close the current interruption device;
• determine that the first current interruption device is open and that a healthy voltage is present on the power line at the first IED;
• and
• close the first current interruption device to restore power to one or more loads of the second IED;
• the second IED, comprising:
• a third communication port associated with a third current interruption device;
• a fourth communication port associated with a fourth current interruption device, wherein the second IED is configured to:
• receive, via the third communication port, a second close permissive signal indicating that a third IED has isolated a fault from the power system;
• receive, via the third communication port, a second close permissive signal indicating that a third IED has isolated a fault from the power system;
• determine that the third current interruption device and the fourth current interruption device are closed and that a healthy voltage is not present;
• and
• send, via the fourth communication port, the first close permissive signal to the first IED.