System and method for control of power distribution

• US 9,917,436 B2
• Filed: 10/30/2007
• Issued: 03/13/2018
• Est. Priority Date: 10/30/2007
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Popescu, Bogdan Cristian
• Primary Examiner(s): Huang, Miranda
• Assistant Examiner(s): LOPEZ ALVAREZ, OLVIN
• Application Number:
  US11/978,740
• Publication Number:
  US 20090112375A1
• Time in Patent Office: 3,787 Days
• Field of Search: 700292, 307 23, 307 64- 65, 307113, 3071418, 307153, 307154, 307156, 361 62, 361 64, 361 72
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02H 1/0092 concerning the data processing means, e.g. expert systems, neural networks
• CPC Class Codes: H02H 3/063 Details concerning the co-operation of many similar arrangements, e.g. in a network sectionalised protection H02H7/26
• CPC Class Codes: H02H 7/261 involving signal transmission between at least two stations transmission of signals in general H02H1/0061
• CPC Class Codes: H02H 7/262 involving transmissions of switching or blocking orders
• CPC Class Codes: H02H 7/263 involving transmissions of measured values comparison of currents or voltages using pilot wires H02H3/30
• CPC Class Codes: H02H 7/28 for meshed systems
• CPC Class Codes: H02J 1/00 Circuit arrangements for dc mains or dc distribution networks
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00017 using optical fiber
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 13/0004 involved in a protection system
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 3/0073 for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/12 Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses

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.

Claims

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 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; and

controlling operation of the first plurality of devices by the first substation controller using the data array, the controlling by the first substation controller including controlling based on the topology to isolate a fault in the first network sector and dynamically restoring power based on requesting and receiving power availability information and circuit capacity restrictions from the one or more other substation controllers 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, wherein to isolate the fault includes opening one or more selected phases of one or more of a plurality of switches surrounding the faulted segment, communicating with 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 the one or more selected phases and the one or more isolated phases correspond to the one or more faulted phases and wherein communicating with the one or more other substation controllers further comprises receiving power restoration capability from each of the one or more other substation controllers.

12. The method of claim 11, wherein the plurality of array elements includes indications of at least a status of each of the plurality of devices and a configuration of each of the plurality of devices;

and

the method further comprises storing status data and configuration data for each of the first plurality of devices in a first data array, and storing status data and configuration data for each of the second plurality of devices in a second data array.

13. The method of claim 12, wherein the status data is selected from at least one of:

real time status data and historical status data.

14. The method of claim 12, wherein the status data is selected from at least one of:

a voltage, a measured current, a switch position, a fault indication, and a recloser lock indication.

15. The method of claim 12, wherein the configuration data is selected from at least one of:

previous devices, next devices, branch information, a device type, a priority indication, three-phase protection, and a maximum load capacity.

16. A computer program product 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 first plurality of nodes and controlled by a first substation controller, and a second network sector that includes a second plurality of devices distributed along a second feeder connected to a second power source via a second plurality of nodes and controlled by a second substation controller, the program product comprising:

a non-transitory tangible storage medium, readable by a processor, storing instructions for execution by the processor, the instructions for implementing a method comprising;

generating data representing properties of each of the first and second plurality of devices and a topology of the first and second network sector;

generating and storing via a control application a variable size multi-dimensional data array for the first and second network sector, the data array including a plurality of array elements, the plurality of array elements representing properties of each of the first substation controller, the second substation controller, the first plurality of devices and the second plurality of devices; and

controlling operation of the first plurality of devices by the first substation controller using the multi-dimensional data array, the controlling by the first substation controller including controlling based on the topology to isolate a fault in the first network sector and dynamically restoring power based on requesting and receiving power availability information and circuit capacity restrictions from the second substation controller, 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 isolating the fault includes 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, wherein isolating the fault further includes opening one or more selected phases of one or more of a plurality of switches surrounding the faulted segment, communicating with 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 the one or more selected phases and the one or more isolated phases correspond to the one or more faulted phases, and wherein communicating with the one or more other substation controllers further comprises receiving power restoration capability from each of the one or more other substation controllers.

17. 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 and connected to a first power source and controlled by a first controller, the method comprising:

receiving data directly from each of the first plurality of devices at the first controller and generating a first set of data representing properties of each of the first plurality of devices;

converting, at the first controller, the first set of data into a first variable size, multidimensional dynamic first data array for the first network sector, the first data array including a first plurality of array elements, each of the first plurality of array elements representing properties of one of the first plurality of devices; and

controlling operation of the first plurality of devices by the first controller using the first data array, the controlling by the first controller including controlling based on the topology to isolate one or more faults in the first network sector and dynamically restoring power based on requesting and receiving power availability information and circuit capacity restrictions from a second substation controller, 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 isolating the one or more faults includes 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, wherein isolating the one or more fault further includes opening one or more selected phases of one or more of a plurality of switches surrounding the faulted segment, communicating with the second substation controller 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 communicating with the second controller further comprises receiving power restoration capability from the second substation controller.

18. The method of claim 17, wherein the network further comprises a second network sector that includes a second plurality of devices distributed along a second feeder connected to a second power source and controlled by the second controller, and the method further comprises:

receiving data directly from each of the second plurality of devices at the second controller and generating a second set of data representing properties of each of the second plurality of devices;

converting, at the second controller, the second set of data into a second data array including a second plurality of array elements, each of the second plurality of array elements representing properties of one of the second plurality of devices, each of the second plurality of elements described in identical code relative to the first plurality of array elements; and

storing the first data array for the first network sector and storing the second data array for a second sector.

19. The method of claim 18, wherein the first and second data arrays include indications of at least:

a status of each of the first and second plurality of devices and a configuration of each of the first and second plurality of devices, and the method further comprises storing status data and configuration data for each of the first plurality of devices in the first data array, and storing status data and configuration data for each of the second plurality of devices in the second data array.

20. The method of claim 19, wherein the configuration data is selected from at least one of:

previous devices, next devices, branch information, a device type, a priority indication, three-phase protection, and a maximum load capacity.