Data sample and transmission modules for power distribution systems

• US 7,058,482 B2
• Filed: 02/25/2003
• Issued: 06/06/2006
• Est. Priority Date: 02/25/2002
• Status: Expired due to Term

• Current Assignee: ABB Schweiz AG (ABB Limited)
• Original Assignee: General Electric Company
• Inventors: Berkcan, Ertugrul, Papallo, Thomas F., Andarawis, Emad Andarawis, Dougherty, John J., Fletcher, David G.
• Primary Examiner(s): Gandhi, Jayprakash N.
• Application Number:
  US10/373,680
• Publication Number:
  US 20030212515A1
• Time in Patent Office: 1,197 Days
• Field of Search: 700/286, 700/292, 700/293, 700/296, 702/60, 702/62
• US Class Current: 700/292
• CPC Class Codes: G06F 1/12 Synchronisation of different clock signals provided by a plurality of clock generators
• CPC Class Codes: H01H 2300/03 Application domotique, e.g. for house automation, bus connected switches, sensors, loads or intelligent wiring
• CPC Class Codes: H02H 1/0061 concerning transmission of signals transmission of measured quantities or switching orders; sectionalised protection involving signal transmission between at least two stations H02H7/261; comparison of the voltage or current values at two spaced portions of a single system H02H3/28; transferring the output of a sensing member to another variable G01D5/00; electrical measuring arrangements using modulation of electromagnetic waves, e.g. light beams G01R15/24, G01R15/26
• CPC Class Codes: H02H 3/006 Calibration or setting of parameters
• CPC Class Codes: H02H 3/05 with means for increasing reliability, e.g. redundancy arrangements for logic circuits H03K19/003
• CPC Class Codes: H02H 7/263 involving transmissions of measured values comparison of currents or voltages using pilot wires H02H3/30
• CPC Class Codes: H02J 13/00001 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H02J 13/00009 using pulsed signals
• CPC Class Codes: H02J 13/00012 using an auxiliary transmission line
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00018 using phone lines
• CPC Class Codes: H02J 13/00036 the elements or equipment being or involving switches, relays or circuit breakers circuits for indication of single switches H01H9/167
• CPC Class Codes: H02J 13/0004 involved in a protection system
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 3/0012 Contingency detection
• CPC Class Codes: H02J 3/007 Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing uninterruptable power supply H02J9/00
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02B 90/20 : Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 10/40 : Display of information, e.g. of data or controls
• CPC Class Codes: Y04S 20/14 : Protecting elements, switches, relays or circuit breakers
• CPC Class Codes: Y04S 20/20 : End-user application control systems
• CPC Class Codes: Y04S 20/221 : General power management systems
• CPC Class Codes: Y04S 20/222 : Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 40/121 : using the power network as support for the transmission
• CPC Class Codes: Y04S 40/124 : using wired telecommunication networks or data transmission busses
• CPC Class Codes: Y04S 50/10 : Energy trading, including energy flowing from end-user application to grid

Abstract

A data sample and transmission module for a power distribution system is provided. The module has a microprocessor and a network interface. The microprocessor samples first signals indicative of a condition of power in the power distribution system. The network interface places the microprocessor in communication with a data network. The microprocessor samples the first signals based in part upon a synchronization signal transmitted on the data network.

Claims

1. A data sample and transmission module for a power distribution system, comprising:

a microprocessor for sampling one or more first signals indicative of a condition of power in the power distribution system;

a phase-lock-loop algorithm resident on said microprocessor; and

a network interface for placing said microprocessor in communication with a data network, said microprocessor sampling said one or more first signals based upon said phase-lock-loop algorithm as adjusted by a synchronization signal transmitted on said data network.

2. The module as in claim 1, wherein said microprocessor is configured to receive one or more second signals indicative of a condition of a circuit breaker in the power distribution system.

3. The module as in claim 1, further comprising a power supply providing power to said microprocessor, said power supply receiving said power from a first source, a second source, or a combination thereof.

4. The module as in claim 3, wherein said power supply provides a third signal to said microprocessor, said third signal being indicative of whether said power supply is receiving said power from said first source, said second source, or said combination.

5. A data sample and transmission module for a power distribution system, comprising:

a microprocessor for sampling one or more first signals indicative of a condition of power in the power distribution system; and

a network interface for placing said microprocessor in communication with a data network, said microprocessor sampling said one or more first signals based in part upon a synchronization signal transmitted on said data network, wherein said microprocessor is configured to combine said one or more first signals as raw parametric data in a first message and to send said first message over said data network.

6. The module as in claim 5, wherein said microprocessor operates a circuit breaker in the power distribution system in response to a second message receivable from the data network.

7. The module as in claim 6, further comprising a backup system for operating said circuit breaker based on said one or more first signals independent of said second message.

8. The module as in claim 7, wherein said backup system comprises an analog circuit, said analog circuit receiving said one or more first signals and generating an output based on said one or more first signals, said output being configured to operate said circuit breaker.

9. The module as in claim 7, further comprising a power supply providing power and a third signal to said microprocessor, said power supply receiving said power from a first source, a second source, or a combination thereof, said third signal being indicative of whether said power supply is receiving said power from said first source, said second source, or said combination.

10. The module as in claim 9, wherein said backup system comprises an algorithm resident on said microprocessor, said microprocessor processing said one or more first signals using said algorithm when said third signal indicates said power supply is receiving said power only from said second source, said algorithm generating an output based on said one or more first signals, said output being configured to operate said circuit breaker.

11. The module as in claim 7, wherein said backup system comprises a second microprocessor having an algorithm resident thereon, said algorithm generating an output based on said one or more first signals, said output being configured to operate said circuit breaker.

12. A data sample and transmission module for a power distribution system, comprising:

a microprocessor for sampling a power condition signal from a circuit in the power distribution system;

a network interface placing said microprocessor in communication with a central processor so that said microprocessor can send a first message containing said power condition signal to said central processor and can receive a second message and a synchronization pulse from said central processor, said microprocessor sampling said power condition signal based in part upon said synchronization pulse;

means for operating a circuit breaker in the power distribution system in response to said second message; and

means for operating said circuit breaker in response to said power condition signal independent of said second message.

13. The module as in claim 12, wherein said means for operating said circuit breaker independent of said second message comprises an analog circuit, said analog circuit receiving said power condition signal and generating an output based on said power condition signal, said output being configured to operate said circuit breaker.

14. The module as in claim 12, wherein said means for operating said circuit breaker independent of said second message comprises an algorithm resident on said microprocessor, said algorithm generating an output based on said power condition signal, said output being configured to operate said circuit breaker.

15. The module as in claim 12, wherein said means for operating said circuit breaker independent of said second message comprises a second microprocessor having an algorithm resident thereon, said second microprocessor receiving said power condition signal so that said algorithm can generate an output based on said power condition signal, said output being configured to operate said circuit breaker.

16. The module as in claim 12, further comprising a phase-lock-loop algorithm resident on said microprocessor, wherein said microprocessor samples said power condition signal based upon said phase-lock-loop algorithm as adjusted by said synchronization pulse.

17. The module as in claim 12, wherein said first message comprises raw parametric data of said power condition signal.

18. A protection system for a power distribution system, comprising:

a first circuit breaker in communication with a first module;

a second circuit breaker in communication with a second module; and

a central processor in communication with said first and second modules so that said central processor can send a synchronization signal to said first and second modules, said first module sampling a first power condition at said first circuit breaker based in part upon said synchronization signal, said first module sending said first power condition to said central processor, said second module sampling a second power condition at said second circuit breaker based in part upon said synchronization signal, and said second module sending said second power condition to said central processor,

wherein said central processor is configured to control said first circuit breaker based on said first power condition, said second circuit breaker based on said second power condition, and combinations thereof.

19. The protection system as in claim 18, wherein said first module further comprises a backup system for locally operating said first circuit breaker based on said first power condition independent of said central processor.

20. The protection system as in claim 19, wherein said backup system comprises an analog circuit receiving said first power condition and generating an output based on said first power condition signal, said output being configured to operate said first circuit breaker.

21. The protection system as in claim 19, wherein said backup system comprises an algorithm resident on said microprocessor, said algorithm generating an output based on said first power condition signal, said output being configured to operate said first circuit breaker.

22. The protection system as in claim 19, wherein said backup system comprises a second microprocessor having an algorithm resident thereon, said algorithm generating an output based on said first power condition signal, said output being configured to operate said first circuit breaker.

23. The protection system as in claim 18, further comprising a phase-lock-loop algorithm resident on each of said first and second modules, wherein said first module samples said first power condition signal based upon said phase-lock-loop algorithm as adjusted by said synchronization signal and said second module samples said second power condition signal based upon said phase-lock-loop algorithm as adjusted by said synchronization signal.

24. The protection system as in claim 18, wherein said first power condition sent to said central processor by said first module comprises raw parametric data of said first power condition at said first circuit breaker and said second power condition sent to said central processor by said second module comprises raw parametric data of said second power condition at said second circuit breaker.