US 2022/0021237 A1 · SINGLE PHASE FAULT ISOLATION AND RESTORATION WITH LOOP AVOIDANCE

Abstract

Techniques for controlling a power distribution network are provided. An electronic processor receives, a fault indication associated with a fault from a first isolation device of a plurality of isolation devices. The processor identifies a first subset of a plurality of phases associated with the fault indication and a second subset of the plurality of phases not associated with the fault indication. The processor identifies a downstream isolation device downstream of the fault. The processor sends send a first open command to the downstream isolation device for each phase in the first subset. The processor sends a close command to a tie-in isolation device for each of the plurality of phases. The processor sends a second open command to the downstream isolation device for each phase in the second subset. Responsive to identifying a potential loop configuration, the processor sends the second open command prior to the close command.

Claims20

Dependent claims

A system for controlling a power distribution network providing power using a plurality of phases, the system comprising:

an electronic processor configured to:
receive a first fault indication associated with a fault in the power distribution network from a first isolation device of a plurality of isolation devices;
identify a first subset of the plurality of phases associated with the first fault indication and a second subset of the plurality of phases not associated with the first fault indication, wherein the first subset and the second subset each include at least one member;
identify a downstream isolation device downstream of the fault;
send a first open command to the downstream isolation device for each phase in the first subset;
send a close command to a tie-in isolation device for each of the plurality of phases;
and
send a second open command to the downstream isolation device for each phase in the second subset,
wherein the electronic processor is further configured to send the second open command prior to sending the close command responsive to identifying a potential loop configuration.

6 more elements

A method for controlling a power distribution network providing power using a plurality of phases, the method comprising:

receiving, via the electronic processor, a first fault indication associated with a fault in the power distribution network from a first isolation device of a plurality of isolation devices;
identifying, via the electronic processor, a first subset of the plurality of phases associated with the first fault indication and a second subset of the plurality of phases not associated with the first fault indication, wherein the first subset and the second subset each include at least one member;
identifying, via the electronic processor, a downstream isolation device downstream of the fault;
sending, via the electronic processor, a first open command to the downstream isolation device for each phase in the first subset;
sending, via the electronic processor, a close command to a tie-in isolation device for each of the plurality of phases;
and
sending, via the electronic processor, a second open command to the downstream isolation device for each phase in the second subset,
wherein the electronic processor is further configured to send the second open command prior to sending the close command responsive to identifying a potential loop configuration.

5 more elements

Dependencies are inferred from the claim text.

Single phase fault isolation and restoration with loop avoidance

Life of this patent

Single phase fault isolation and restoration with loop avoidance

Life of this patent

Abstract

Claims20