System and method for control of power distribution

Patent metadata

Field	Value
Publication number	US-9917436-B2
Application number	US-97874007-A
Country	US
Kind code	B2
Filing date	Oct 30, 2007
Priority date	Oct 30, 2007
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A system for controlling a multi-feed power distribution network is described herein. The network includes a first network sector that includes a first plurality of devices connected to a first power source and a second network sector that includes a second plurality of devices connected to a second power source. The system includes a first controller and a second controller. The first controller is configured to control operation of the first network sector and exchange data with the second controller. The second controller is configured to control operation of the second network sector and exchange data with the first controller. The system is modular and it can be expanded to include additional controllers as necessary. Methods and a computer program product for controlling a multi-feed power distribution network are also described.

First claim

The invention claimed is:

1. A system for controlling a multi-feed power distribution network, the network including a first network sector that includes a first plurality of devices distributed along a first feeder connected to a first power source via a plurality of nodes and one or more other network sectors that each include a plurality of devices distributed along feeders connected to power sources via a plurality of other nodes, the system comprising:
a first substation controller and one or more other substation controllers, wherein the first substation controller is configured to control operation of each of the first plurality of devices in the first network sector and exchange data with the one or more other substation controllers, and the one or more other substation controllers are configured to control operation of each of the plurality of devices in the one or more other network sectors; and
a control application accessible by each substation controller and configured to store a variable size data array of topology data representing each of the first substation controller, the one or more other substation controllers, the first plurality of devices and the plurality of devices distributed along feeders, the control application being executed by either the first substation controller or the one or more other substation controllers to isolate one or more faults by controlling topology of the network based on the topology data and to restore power dynamically based on requesting and receiving power availability information and circuit capacity restrictions, wherein the requesting and receiving power availability information and circuit capacity restrictions is performed according to a priority list with a priority setting for each substation controller and wherein to isolate the one or more faults comprises opening one or more last active nodes before the one or more faults and opening all remaining active nodes immediately following the one or more faults and wherein to isolate the one or more faults further comprises opening one or more selected phases of one or more of a plurality of switches surrounding the faulted segment and wherein communication between the first substation controller and the one or more other substation controllers comprises requesting restoration of power to one or more isolated phases in the one or more isolated segments and wherein communication between the first substation controller and the one or more other substation controllers further comprises receiving power restoration capability from each of the one or more other substation controllers.

2. The system of claim 1 , wherein each of the first and second pluralities of devices of the first network and the one or more other network sectors is selected from at least one of: an active node, a passive node, a controllable switch, a recloser, a circuit breaker, a network split, and a sensor.

3. The system of claim 1 , wherein the exchanged data represents at least one of: a layout of the first sector, a layout of the second sector, a status of one or more of the first plurality of devices, and a status of one or more of the second plurality of devices.

4. The system of claim 3 , wherein the exchanged data represents one or more individual phases.

5. The system of claim 1 , wherein the first substation controller and the one or more other substation controllers are distribution automation (DA) controllers.

6. The system of claim 1 , wherein the first substation controller and the one or more other substation controllers are Supervisory Control And Data Acquisition (SCADA) controllers.

7. The system of claim 1 , wherein the first substation controller is associated with a first power network substation, and the one or more other substation controllers are associated with one or more power network substations.

8. A method for controlling a multi-feed power distribution network, the network including a first network sector that includes a first plurality of switches distributed along a first feeder connected to a first power source via a plurality of nodes and controlled by a first substation controller, and one or more other network sectors that each include a plurality of switches distributed along feeders connected to power sources via a plurality of other nodes and controlled by one or more other substation controllers, the method comprising:
generating a set of data, the set of data representing properties of each plurality of devices and a topology of the first and the one or more other network sectors;
generating and storing via a control application a variable size multi-dimensional data array for the first and the one or more other network sectors, the data array including a plurality of array elements, the plurality of array elements representing each of the first substation controller, the one or more other substation controllers and each plurality of devices;
receiving a fault indication in the first substation controller, the fault indication representing a fault in a faulted segment of the first sector;
the first substation controller isolating the fault in the first sector by controlling the topology of the first sector and opening one or more last active switches in the first sector that surround the faulted segment and opening all remaining active switches immediately following the fault; and
the first substation controller communicating with the one or more other substation controllers to request restoration of power to one or more isolated segments in the first sector, the communicating with the one or more other substation controllers comprising the first substation controller requesting power availability information and circuit capacity restrictions from the one or more other substation controllers to dynamically restore the power, wherein the requesting and receiving power availability information and circuit capacity restrictions is performed according to a priority list with a priority setting for each substation controller, determining whether the faulted segment includes one or more individual faulted phases, wherein isolating the fault comprises opening one or more selected phases of the one or more of the first plurality of switches surrounding the faulted segment, and wherein communicating with the one or more other substation controllers further comprises requesting restoration of power to one or more isolated phases in the one or more isolated segments, and the one or more selected phases and the one or more isolated phases correspond to the one or more faulted phases and wherein communication between the first substation controller and the one or more other substation controllers further comprises receiving power restoration capability from each of the one or more other substation controllers.

9. The method of claim 8 , wherein the one or more other substation controllers are configured to control the plurality of switches in the one or more other network sectors, and wherein the method further comprises restoring power to the one or more isolated segments via the one or more other substation controllers by closing one or more of the plurality of switches in the one or more other network sectors to restore power to one or more isolated segments.

10. The method of claim 8 , further comprising determining whether the faulted segment includes one or more individual faulted phases.

11. A method for controlling a multi-feed power distribution network including at least a first network sector that includes a first plurality of devices distributed along a first feeder connected to a first power source via a plurality of nodes and controlled by a first substation controller, and one or more other network s

Assignees

• Popescu Bogdan Cristian
• Gen Electric

Inventors

• Popescu Bogdan Cristian

Classifications

• H02J13/1323

  using optical fibres · CPC title

• H02J13/1321

  using a wired telecommunication network or a data transmission bus · CPC title

• H02J13/333

  the equipment forming part of substations · CPC title

• H02J13/36

  specially adapted for protection systems · CPC title

• H02J3/0073

  by providing alternative feeding paths when the main path fails · CPC title