WO2012007831A2 - Disjoncteur à compteur intégré et communications sans fil - Google Patents

Disjoncteur à compteur intégré et communications sans fil

Info

Publication number
WO2012007831A2
WO2012007831A2 PCT/IB2011/001639 IB2011001639W WO2012007831A2 WO 2012007831 A2 WO2012007831 A2 WO 2012007831A2 IB 2011001639 W IB2011001639 W IB 2011001639W WO 2012007831 A2 WO2012007831 A2 WO 2012007831A2
Authority
WO
WIPO (PCT)
Prior art keywords
host computer
breaker
data
circuit
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2011/001639
Other languages
English (en)
Other versions
WO2012007831A3 (fr
Inventor
Kevin L. Cousineau
James B. Dehlsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LEVELATION
Original Assignee
LEVELATION
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LEVELATION filed Critical LEVELATION
Publication of WO2012007831A2 publication Critical patent/WO2012007831A2/fr
Publication of WO2012007831A3 publication Critical patent/WO2012007831A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/13—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network
    • H02J13/1321—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/13—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network
    • H02J13/1331—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network using wireless data transmission
    • H02J13/1335—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by the transmission of data to equipment in the power network using wireless data transmission involving a local wireless network, e.g. Wi-Fi®, ZigBee® or Bluetooth®
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

Definitions

  • This application relates generally to the field of sub- metering of electrical power distribution and more particularly to individual circuit breakers incorporating integrated visual metering with wireless, radio and/or cellular communications within conventional form factor packaging.
  • Automated Meter Reading for standard industrial and residential electrical usage meters has been developed to allow remote and/or automated reading of meters for electrical power usage. While still providing a visual meter for reference by the property owner, remote communication for meter readers and the utility supplying the power reduces the service costs for data gathering on power usage as well as reducing requirements for direct access to the meter for reading.
  • Wireless and Radio Frequency communication has been developed for AMR capability allowing utility company employees to "read" meters from the street or other location proximate the building without having to physically read the visual meter indication with the associated required access.
  • devices for monitoring individual circuits or devices within residential power systems have been developed for informing consumers about energy usage of appliances and overall control of energy consumption.
  • Use of wireless communication from these monitoring devices allows data gathering using conventional personal computer systems or similar devices.
  • sub-metering capability allow remote data collection as well as visual usage indicators at the panel to ascertain cost of usage per unit instead of the current standard practice of building total power cost/ total sq ft of the tenant's unit or industrial subsection or department
  • Exemplary embodiments provide a circuit breaker having a case with a form-factor interchangeable with conventional circuit breakers.
  • Conventional, home style, single phase, circuit breakers have only two terminals because they are connected only between a utility current-source and a load.
  • the intelligent circuit breaker can also provide the basic
  • FIG. 1 is a front view of an exemplary standard form factor circuit breaker employing the present embodiments
  • FIG. 2 is a block diagram of the operational elements of the intelligent circuit breaker of the present embodiments
  • FIG. 3 is a block diagram of a host computer used to measure line voltage and determine overall power and energy usage by the intelligent circuit breaker of the present embodiments.
  • FIG. 4 is a block diagram of the overall system in which the present invention is embodied.
  • a conventional circuit breaker switch 12 is employed for manual
  • a display 14 may be a liquid crystal display (LCD) or a multi-digit rotary solenoid type integrated into the case for visual verification of the actual current usage by the circuit on which the breaker is connected. These applications are for single phase metering.
  • Another alternative embodiments may include multi-phase metering and there the circuit breaker has the capability of measuring voltage directly. This would imply that the host computer system would have less duties but the overall performs is quite similar and the operational requirements remain the same.
  • the intelligent breaker employs a standard circuit breaker mechanism 16 (Kl a mechanical relay) with a manual switch 12.
  • a small current transformer 28 is used to measure the actual current in the circuit and simultaneously provide power 24 for the
  • This breaker microcontroller 38 receives the actual current, converted to digital format by its internal
  • Analog to Digital converter rectified and filtered by the True RMS converter block 36.
  • An energy harvester 24 is used in conjunction with a small amount of bulk energy storage to supply continuous current to the internal circuit breaker electronics during period of low current flow through the current
  • CT transformer
  • microcontroller 38 keeps track of time from its built in
  • Short circuit protection is provided by the microcontroller to open the breaker once the current exceeds a specific level for only a short period of time.
  • the intelligent breaker also functions as a data acquisition system with real time data transmission of circuit current flow (amperage) recording and transmission to a host computer shown in FIG. 3.
  • These data functions are essentially parallel to the circuit breaker function in that the microcontroller must record current and time, store these values and simultaneously transmit them over a wireless transceiver 40 or a serial communication 42.
  • the wireless connection is shown here as a BluetoothTM wireless device 40.
  • the serial communication 42 can be a hard wire CAN BUS or other serial connection to 443 to the host computer shown in FIG. 3.
  • BluetoothTM is a proprietary open wireless technology standard for exchanging data over short distances using short wavelength radio transmissions. It was originally conceived as a wireless alternative to RS-232 data cables.
  • the CAN BUS or other standard communication technology such as RS-232, 585 or 422 serial can be used in a unique fashion by attachment of a pre-fabricated bus bar connection that will "snap-on" or be built into a standard DIN Rail Mount used for industrial equipment.
  • the microcontroller 38 may write some of the data acquisition values to the LCD display 44 for an immediate feedback to anyone who opens the breaker panel and examines the operation of the internal breakers. Using proper protocol between the Intelligent Circuit Breaker (ICB) and the host computer, this display may be set to show an average, peak or other data as the program may require or feature.
  • ICB Intelligent Circuit Breaker
  • a BluetoothTM type of radio wireless transceiver 40 is shown herein, there are other types of radio systems that may be suitable. Each requires operation at low power however, as the CT is not capable of providing large amount of power for this operation.
  • FIG. 3 is a block diagram of the host computer used to measure line voltage and determine overall power and energy usage by the intelligent circuit breaker of the present embodiments.
  • the host computer is preferably located within the same circuit breaker panel 50 as the ICB modules. Because of the proximity to the other ICB modules, the power level requirements for this local wireless network are quite small, in keeping with the power needs of the ICB modules. As shown in FIG. 3 this host computer module, unlike the ICB shown in FIG.2, receives its power directly from the power line 30 by means of rectifier and DC supply 51. Because the host computer is connected to line voltage 30, it has the capability to measure the line voltage 30.
  • the power line communications transceiver 49 is also connected to the line voltage 30 and neutral 31 and to the Internet gateway 66.
  • the transceiver 49 is a transmitter/receiver that in conjunction with the Internet gateway 66 allows Internet access over the power lines and/or to establish a wired connection using the existing electrical wiring in a home .
  • connection to each of the ICB modules can be accomplish through a easy to install, "snap on" type bus bar arrangement, a communication rail located on a standard DIN type mounting rail, or some form of copper module-to-module wiring with connectors.
  • communication from the ICB modules to the host computer enables the host computer to gather all data required calculate the actual power usage on those circuit breakers by combining their current measurement with its own voltage measurement. If these measurements are calculated based on a sample rate that is at least 5 to 20 times faster than the line frequency, (300 to 1200 samples per
  • the host computer is also designed to have a higher speed communication gateway 66 to allow it to be connected either directly to the Internet or through a nearby server to a local area network.
  • This communication gateway can consist of an
  • Ethernet cable a high power wireless network connection, a remote AC line communication modem or a direct serial connection such as USB or RS-232 or even a fiber optic serial or Ethernet connection as well.
  • a direct serial connection such as USB or RS-232 or even a fiber optic serial or Ethernet connection as well.
  • the host microprocessor 61 measures the line voltage through a simple line voltage divider 48 usually consisting of a pair of resistors. However this may also be a "potential transformer" for more critical applications where isolation and accuracy are more important. In any event a lower voltage that is
  • proportional to the actual line voltage is then converted to a digital format by a combination of a rectifier, filter and True RMS converter 55, and the microcontrollers own analog- to-digital (A/D) converter 59.
  • the alternating current signal out of the voltage divider 48 is converted into a direct current signal of equivalent value (known as the root mean square, RMS value) for input to the host microcontroller 61.
  • the functions of the host microcontroller 61 are described above, but the programming thereof can be upgraded, as new functions are needed.
  • the host microcontroller 61 communicating with a particular breaker microcontroller 38 (FIG. 2) , through its programming, to activate the relay driver 39 to open the circuit breaker in order to disconnect the circuit operating through this breaker.
  • the relay driver 39 may include circuitry to reset the circuit breaker and restore the associated load.
  • One or more monitoring and control systems may be remotely used to command the host computer to vary the overall load based on its own internal programming. This control capability allows a master monitoring and control system to actively address the power line controlled by the intelligent breaker system to disconnect during high power periods, to disconnect when a particular unit or tenancy is vacated. Of course remote monitoring by an owner of any tenant employing this system is also a built in feature.
  • circuit power and energy usage along with overall circuit usage will be a helpful function of data collection by the host computer itself . Typical usage can be compared over time to determine when that load was running and at how much power. All of these data are very useful for long-term active energy management of a building or tenant.
  • this same computer system, or another remote computer such as a desk top, lap top, palm top, note book, or notepad computer may be able to review this data to discriminate loads on a single individual breaker.
  • Load discrimination and detection can be determined by noting the differences in the turn on/turn off current versus time curves. Each load has an individual curve. For instance the load for a motor will be quite different than a resistive load such as a toaster. The tenant or homeowner can work with the software to help identify each load by operating them independently for identification purposes.
  • the host computer or other remote computer as described above can take advantage of this data to determine what object is being operated at what time and time interval.
  • FIG. 4 is a block diagram of the overall system in which the present invention is embodied.
  • the solid lines illustrate the confines of a breaker panel 50.
  • Each breaker 52, 53, 54, (ICB # 1, ICB # 2 .... ICB # n) is connected to the line 30.
  • Each ICB services a load circuit load # 1, load # 2 .... load # n, to which one or more appliances (loads) are connected.
  • Each ICB has its own antenna 56, 57, 58, (ICB antenna # 1, ICB antenna # 2, .... ICB antenna # n) , for wireless
  • the host computer 60 is connected to the power line 30 and neutral 31 entering the breaker panel from an external power grid.
  • the host computer 60 has a host antenna 62, which receives and transmits signals from the ICB antennas 56, 57, 58. External communication with remote devices not located at the breaker panel is provided, such remote computer 70. Remote computer 70 may have wireless capability via remote antenna 72, which can communicate with the host computer. In addition to the host antenna 62 there is provided a serial communication port 64 and an Internet connection 66 for alternate ways of communicating with the remote computer 70 as described in FIG.3.
  • Circuit panel 50 current and/or time data is collected from the
  • intelligent circuit breakers 52, 53, 54 which have built in data acquisition as shown in FIG. 2.
  • the collected data is communicated by wireless to a common host computer 60, which is preferably located in the breaker panel 50 but may be external thereto.
  • the line voltage 30 is measured (blocks 48, 55, 59 of FIG. 3) at the host computer 60.
  • the host computer (FIG. 3) calculates specific load power and energy usage of each breaker 52, 53, 54 in real-time.
  • the specific load power and energy usage of each breaker 52, 53, 54 is
  • a remote computer 70 communicated to a remote computer 70 via serial communication 64 or Internet gateway 66.
  • a commercial tenant or homeowner has the ability to view these computed values for each load once communication is established between this host computer and the homeowners or commercial tenants Personal computer (PC) .
  • PC Personal computer

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

L'invention porte sur une collecte de données à distance pour panneau à disjoncteur. Des données de courant et/ou de temps de panneau à disjoncteur sont collectées à partir d'un ou plusieurs disjoncteurs intelligents à acquisition de données intégrée. Les données sont communiquées à un ordinateur hôte. Simultanément, la tension de ligne est mesurée et une utilisation de puissance de sortie utile et d'énergie spécifique de chaque disjoncteur est calculée en temps réel au niveau de l'ordinateur hôte. L'utilisation de puissance de sortie utile et d'énergie spécifique de chaque disjoncteur est transmise à un ordinateur distant, qui peut être un ordinateur personnel d'un propriétaire, en vue d'une analyse et d'une commande.
PCT/IB2011/001639 2010-07-16 2011-07-14 Disjoncteur à compteur intégré et communications sans fil Ceased WO2012007831A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36486810P 2010-07-16 2010-07-16
US61/364,868 2010-07-16

Publications (2)

Publication Number Publication Date
WO2012007831A2 true WO2012007831A2 (fr) 2012-01-19
WO2012007831A3 WO2012007831A3 (fr) 2012-05-18

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Country Link
WO (1) WO2012007831A2 (fr)

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