Synchrophasor data management systems and methods

• US 9,673,994 B2
• Filed: 01/20/2014
• Issued: 06/06/2017
• Est. Priority Date: 01/20/2014
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Kanabar, Mitalkumar G., Hamour, Ihab, Voloh, Ilia, Mutnuri, Sridevi
• Primary Examiner(s): DAO, THUY CHAN
• Application Number:
  US14/159,229
• Publication Number:
  US 20150207645A1
• Time in Patent Office: 1,233 Days
• CPC Class Codes: G01R 19/2513 Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05F 1/66 Regulating electric power
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 13/00006 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H04L 12/2854 Wide area networks, e.g. public data networks
• 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 10/00 Systems supporting electrical power generation, transmission or distribution
• CPC Class Codes: Y04S 10/22 Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
• CPC Class Codes: Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
• CPC Class Codes: Y04S 40/12 characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment

Abstract

One embodiment describes a non-transitory tangible computer-readable medium storing a plurality of instructions executable by a processor of an electronic device in a wide area monitoring system. The instructions include instructions to receive a synchro-command from the wide area monitoring system via a network interface, in which the synchro-command is time synchronized with a global clock by a time stamp encoded on the synchro-command; accept or reject the synchro-command with an input handler based at least in part on a sender ID and a receiver ID encoded on the synchro-command; schedule execution of a control command encoded on the synchro-command with a synchro-command manager based at least in part on a scheduler time encoded on the synchro-command; and execute the control command encoded on the synchro-command with the processor based at least in part on an application ID encoded on the synchro-command.

Claims

1. A non-transitory computer-readable medium comprising instructions that, when executed by a processor of an electronic device in a wide area monitoring system, cause the processor to:

accept or reject a synchro-command, after receiving the synchro-command from the wide area monitoring system via a network interface, wherein the synchro-command is time synchronized with a global clock by a time stamp encoded on the synchro-command, wherein the acceptance or rejection of the synchro-command is based at least in part on a sender ID and a receiver ID encoded on the synchro-command;

schedule execution of a control command encoded on the synchro-command based at least in part on a scheduler time encoded on the synchro-command; and

execute the control command encoded on the synchro-command based at least in part on an application ID encoded on the synchro-command.

2. The non-transitory computer-readable medium of claim 1, comprising instructions that, when executed by a processor of an electronic device in a wide area monitoring system, cause the processor to:

retrieve and send a stored synchrophasor dataset and a stored configuration of a synchrophasor measurement unit to the synchrophasor measurement unit in response to a data retrieval control command encoded on the synchro-command, wherein the configuration of the synchrophasor measurement unit corresponds with a time when the synchrophasor dataset was generated.

3. The non-transitory computer-readable medium of claim 1, wherein the instruction to schedule execution of the control command comprises an instruction to prioritize scheduling of control command based at least in part on a time stamp encoded on the synchro-command.

4. The non-transitory computer-readable medium of claim 1, wherein the instruction to schedule execution of the control command based at least in part on the scheduler time enables synchronized execution of the control command in various devices in the wide area monitoring system.

5. The non-transitory computer-readable medium of claim 1, comprising instructions that, when executed by the processor, cause the processor to:

generate synchrophasor datasets in a synchrophasor measurement unit based at least in part on measurements received from power equipment coupled to the synchrophasor measurement unit; and

store the generated synchrophasor datasets and configuration of the synchrophasor measurement unit.

6. The non-transitory computer-readable medium of claim 5, comprising instructions that, when executed by the processor, cause the processor to:

time align and aggregate the synchrophasor datasets; and

map the synchrophasor datasets to protocol specific datasets.

7. A device in a wide area monitoring system, comprising:

a processor; and

a memory comprising instructions that, when executed by the processor, cause the processor to;

store a generated synchrophasor dataset and a configuration of a synchrophasor measurement unit corresponding with when the synchrophasor dataset was generated, wherein the synchrophasor measurement unit is configured to generate synchrophasor datasets based at least in part on measurements collected by power equipment coupled to the device;

retrieve and send the stored synchrophasor dataset and configuration to the synchrophasor measurement unit in response to a data retrieval control command, wherein the data retrieval control command identifies the stored synchrophasor dataset;

utilize a synchro-command received from a second device in the wide area monitoring system, wherein the synchro-command is time synchronized with a global clock by a time stamp encoded on the synchro-command;

determine whether to accept or reject the synchro-command based at least in part on a sender ID and a receiver ID encoded on the synchro-command; and

schedule execution of the data retrieval control command encoded on an accepted synchro-command based at least in part on a scheduler time encoded on the synchro-command.

8. The device of claim 7, wherein the synchrophasor measurement unit is one of a plurality of synchrophasor measurement units that generated the synchrophasor dataset.

9. The device of claim 7, wherein the data retrieval control command identifies the stored synchrophasor dataset with a start retrieval time and a stop retrieval time, wherein the stored synchrophasor dataset corresponds with the start retrieval time and the stop retrieval time.

10. The device of claim 7, wherein the instruction to schedule execution of the data retrieval control command is to facilitate synchronized execution with other devices in the wide area monitoring system.

11. The device of claim 7, wherein the instructions, when executed by the processor, cause the processor to prioritize scheduling of the data retrieval control command based at least in part on time stamps encoded on the synchro-command.

12. The device of claim 7, wherein the instruction to determine whether to accept or reject the synchro-command includes matching:

the receiver ID with a device ID; and

the sender ID with a list of other devices from which the device is allowed to receive synchro-commands.

13. The device of claim 7, comprising instructions that, when executed by the processor, cause the processor to time align and aggregate the synchrophasor datasets, and to map the synchrophasor datasets to protocol specific datasets based at least in part on a protocol utilized by the second device.

14. The device of claim 13, wherein the generated synchrophasor datasets have a sampling rate.

15. The device of claim 7, wherein the device is a relay and the wide area monitoring system is configured to monitor an electrical grid.