Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
  • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
  • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
  • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
  • G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
  • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
  • H01H71/10—Operating or release mechanisms
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
  • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
  • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
  • H02H1/00—Details of emergency protective circuit arrangements
  • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
  • H02H1/00—Details of emergency protective circuit arrangements
  • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
  • H02H1/00—Details of emergency protective circuit arrangements
  • H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
  • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
  • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
  • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
  • H01H2089/065—Coordination between protection and remote control, e.g. protection job repartition, mutual assistance or monitoring

Definitions

• the invention relates to the field of systems comprising an electric meter and a circuit breaker.
• a modern electricity meter sometimes called an "intelligent" electricity meter, is of course suitable for measuring a quantity of electrical energy supplied by a distributor to an electrical installation via an electrical distribution network, but is also capable of producing a number of complementary functions: price management by order receipt, remote and remote programming, remote customer information, etc.
• Such an electricity meter naturally includes current and voltage sensors.
• the current and voltage sensors measure the amount of electrical energy supplied to the electrical installation.
• the current and voltage sensors can also be used to monitor the voltage across the electrical installation.
• Such an electricity meter also comprises a cut-off device for selectively connecting and disconnecting, remotely, the electrical installation of the electrical distribution network.
• the cut-off device is used in particular to protect the electrical installation by opening when it is subjected to accidental overvoltage coming from the electrical distribution network, and by closing again following this accidental surge on order of an operator of the distributor.
• the cut-off device is also used to remotely cut or restore power to the electrical installation in case, for example, of termination of the user's subscription of the electrical installation, of non-compliance with the contract subscription or non-payment of the electrical energy consumed, without the need to send personnel on site.
• Such an electric meter further comprises a communication module for communicating with the outside of the electricity meter, for example with a user of the electrical installation, with an operator of the distributor, with an information system (SI) of the distributor. , or with a data concentrator connected to several electric meters.
• the communication module implements power line communication in line or any other type of wired or wireless communication.
• Such an electricity meter finally comprises one or more processing components that manage the operation of the electric meter, as well as power supply components that supply the various electrical components of the electric meter.
• Such an electric meter comprises a large number of components. These components allow the electric meter to perform many functions, but tend to increase the mass, size and cost of the electric meter, and reduce its reliability.
• the object of the invention is to reduce the mass, the size and the cost of an electric meter, and to increase its reliability.
• a system comprising an electric meter and a circuit breaker intended to be mounted on a line connecting an electrical distribution network to an electrical installation, the electric meter comprising:
• a primary processing component arranged to acquire a primary power parameter relating to a power supply of the electrical installation, and to produce from the primary power parameter a primary command intended to control an opening or closing of the line; ; a primary transceiver arranged to transmit the primary command;
• circuit breaker comprising:
• a bistable relay arranged to open or close the cutoff member
• a secondary receiver arranged to receive the primary control
• a secondary treatment component arranged to acquire the primary control and to control the bistable relay so as to open or close the cut-off device as a function of the primary control.
• the electric meter uses the breaking device of the circuit breaker to cut the line when an event occurs which would have led a traditional electric meter (equipped with a cut-off device) to cut the line.
• the electric meter uses the breaking device of the circuit breaker to close the line.
• the electric meter uses the primary transceiver to transmit the primary command to the circuit breaker receiving the primary command via the secondary receiver.
• the reliability of the electric meter is also significantly increased.
• the cutter is sometimes subject to coal mining problems that reduce its reliability and therefore that of the traditional electric meter.
• a system such as the one just described, in which the primary power parameter is an opening request or a closing request produced by a device external to the system and received by the primary processing component, is proposed. of the electricity meter via the primary transceiver.
• the secondary treatment component is also arranged to acquire a secondary power parameter relating to the supply of the electrical installation, to produce from the secondary power setting a secondary control for controlling opening or closing of the line, and for controlling the bistable relay to open or close the cutoff according to the secondary control.
• a system such as the one just described, in which the primary transceiver is an in-line carrier transceiver and the secondary receiver is an on-line carrier receiver, is furthermore proposed.
• the primary transceiver is a dual band transceiver and the secondary receiver is a single band receiver.
• circuit breaker comprises a secondary voltage sensor arranged to measure a downstream voltage downstream of the breaking device.
• a system such as that just described, comprising means for pairing the electrical meter and circuit breaker.
• circuit breaker intended to be mounted on a line connecting an electrical distribution network to an electrical installation, the circuit breaker comprising: a cut-off member of the line;
• a bistable relay arranged to open or close the cutoff member
• a secondary receiver arranged to receive a primary control that can be produced by an electric meter mounted on the line;
• a secondary treatment component arranged to acquire the primary control and to control the bistable relay so as to open or close the cut-off device as a function of the primary control.
• a circuit breaker such as the one just described, in which the secondary treatment component is also arranged to acquire a secondary supply parameter relating to the supply of the electrical installation, to produce from the secondary power parameter a secondary control for controlling opening or closing of the line, and for controlling the bistable relay so as to open or close the cut-off device according to the secondary control.
• a method for monitoring a line connecting an electrical distribution network to an electrical installation is proposed, the monitoring method being implemented in a circuit breaker such as the one just described and comprising the steps of:
• Storage means are furthermore proposed, characterized in that they store a computer program comprising instructions for implementing, by a circuit breaker processing component, the monitoring method which has just been described.
• FIG. 1 shows an electric meter and a circuit breaker of a system according to the invention
• FIG. 2 shows the transmission of opening requests, closure requests and primary commands for controlling an opening or closing of the line.
• the system according to the invention comprises an electric meter 1 and a circuit breaker 2.
• Line 3 which connects a distribution network electrical 4 to an electrical installation 5.
• Line 3 is here a single-phase line comprising a phase conductor 6 and a neutral conductor 7.
• the electricity meter 1 is here positioned upstream of the circuit breaker 2.
• upstream is meant here on the side of the electrical distribution network 4, and “downstream” here means on the side of the electrical installation 5.
• the system comprises means for pairing the electric meter 1 and the circuit breaker 2.
• the pairing means here comprise a connector and a pairing module positioned on and in the electric meter 1. An operator can therefore enter the using an installation tool such as a mobile terminal, the serial number of circuit breaker 2 in the electricity meter 1.
• the transmission of the serial number uses the EURIDIS protocol here.
• the electric meter 1 comprises a measurement block 9 and a primary transceiver 10.
• the measurement block 9 comprises a primary phase current sensor, a primary neutral current sensor, a primary voltage sensor and primary processing means.
• the primary phase current sensor measures a primary phase current flowing in the phase conductor 6.
• the primary phase current sensor is mounted on the phase conductor 6.
• the primary neutral current sensor measures a primary neutral current flowing in the neutral conductor 7.
• the primary neutral current sensor is mounted on the neutral conductor 7.
• the primary voltage sensor measures a primary voltage between the phase conductor 6 and the neutral conductor 7.
• the primary processing means comprise a primary processing component 11 (for example a processor, a microcontroller or an FP6A).
• the component of primary processing 11 manages the operation of the electric meter 1 and, in particular, acquires measurements of primary phase current, primary neutral current and primary voltage produced by the primary phase current sensor, by the primary neutral current sensor. and by the primary voltage sensor.
• the primary treatment component 11 estimates in particular the amount of electrical energy supplied to the electrical installation 5.
• the primary transceiver 10 is here an in-line carrier transceiver.
• the primary transceiver 10 can inject between the phase conductor 6 and the neutral conductor 7 emitted signals which are superimposed on the primary phase / neutral voltage.
• the emitted signals have a high frequency relative to the frequency of the primary phase / neutral voltage, and propagate between the phase conductor 6 and the neutral conductor 7.
• the emitted signals contain messages produced by the primary processing component 11 .
• the transmitted signals are transmitted here either to circuit breaker 2, to an information system (SI) of the distributor, or to a data concentrator connected to several electric meters.
• SI information system
• the primary transceiver 10 may also receive received signals superimposed on the primary phase / neutral voltage.
• the received signals also have a high frequency with respect to the frequency of the primary phase / neutral voltage, and propagate between the phase conductor 6 and the neutral conductor 7.
• the signals received come either from the circuit breaker 2 or from the IS or the data concentrator (they can then be relayed by other intermediate counters), and contain messages produced by the circuit breaker 2, by the IS or by the concentrator. data.
• the primary transceiver 10 is a transmitter dual-band receiver, which is arranged to transmit the transmitted signals and receive the received signals on a first frequency band and a second frequency band.
• the first frequency band is here a band defined by the CENELEC A standard.
• the second frequency band is here a band established by the FCC (for Federal Communications Commission).
• the circuit breaker 2 meanwhile, comprises a switching device 20, a bistable relay 21, an actuating member 22, a detection block 23 and a secondary transceiver 24.
• the cutoff member 20 may be open or closed. When it is open, the cut-off device 20 intersects the line 3 by opening both the phase conductor 6 and the neutral conductor 7, that is to say by blocking the current flow on the conductor phase 6 and on the neutral conductor 7. When closed, the cut-off device 20 closes the line 3 and allows the flow of current on the phase conductor 6 and on the neutral conductor 7.
• the bistable relay 21 is arranged to open and close the cut-off member 20 via the actuating member 22.
• the use of the bistable relay 21 makes it possible, thanks to an opening command, to open the cut-off member 20 which remains open until the application of a closing command.
• the closing command closes the cut-off member 20, which then remains closed until the application of an opening command.
• the actuating member 22 furthermore comprises two push-buttons 25 which make it possible, from outside the circuit breaker 2, to manually cut or reset the circuit breaker 2, that is to say to open and close the cut-off device 20 via the actuator 22.
• the detection block 23 comprises a secondary phase current sensor, a secondary neutral current sensor, a secondary voltage sensor and secondary processing means.
• the secondary phase current sensor measures a secondary phase current flowing in the phase conductor 6.
• the secondary phase current sensor is mounted on the phase conductor 6 downstream of the cutoff member 20.
• the secondary neutral current sensor measures a secondary neutral current flowing in the neutral conductor 7.
• the secondary neutral current sensor is mounted on the neutral conductor 7 downstream of the cutoff member 20.
• the secondary voltage sensor measures a downstream voltage between the phase conductor 6 and the neutral conductor 7 downstream of the breaking device 20.
• the secondary processing means comprise a secondary processing component 28 (for example a processor, a microcontroller or an FPGA).
• the secondary processing component 28 manages the operation of the circuit breaker 2 and, in particular, acquires secondary phase current, secondary neutral current and downstream current measurements produced by the secondary phase current sensor, by the current sensor. secondary neutral and by the secondary voltage sensor.
• the secondary transceiver 24 is here an in-line carrier transceiver.
• the secondary transceiver 24 can send between the phase conductor 6 and the neutral conductor 7 emitted signals which are superimposed on the secondary phase / neutral voltage.
• the emitted signals have a high frequency with respect to the frequency of the voltage secondary phase / neutral, and propagate between the phase conductor 6 and the neutral conductor 7.
• the signals transmitted are transmitted here either to the electricity meter 1 or to the information system (SI) of the distributor (via the electric meter 1) or to the data concentrator (via the electricity meter).
• the transmitted signals contain messages produced by the secondary processing component 28.
• the secondary transceiver 24 may also receive received signals superimposed on the secondary phase / neutral voltage.
• the signals received also have a high frequency relative to the frequency of the secondary phase / neutral voltage, and propagate between the phase conductor 6 and the neutral conductor 7.
• the received signals come either from the electric meter 1, from the SI (via the electric meter), or from the data concentrator (via the electric meter 1), and contain messages produced by the electric meter 1, by the SI or by the data concentrator.
• the secondary transceiver 24 is here a single-band transceiver, which is arranged to transmit transmitted signals and receive signals received on a single frequency band.
• This frequency band is here the second frequency band (established by the FCC).
• the electric meter 1 uses the breaking device 20 of the circuit breaker 2 to cut the line 3 when primary events occur which, in a traditional electric meter (equipped with a cut-off device), lead said counter traditional electric device to use its own cutoff device to cut the line or close the line.
• the primary processing component 11 of the electric meter 1 is thus arranged to acquire primary power supply parameters relating to a power supply of the electrical installation 5 and to produce, from each primary power parameter, a primary control intended to order opening or closing of line 3.
• the primary power parameters therefore correspond to the primary events just mentioned.
• the primary power parameters comprise an opening request or a closing request produced by an external device and received by the primary processing component 11 of the electric meter 1 via the primary transceiver 10.
• the external equipment is here the IS or the data concentrator.
• the SI transmits by carrier currents online a request to open the electric meter 1, possibly via the data concentrator.
• the primary transceiver 10 receives the opening request.
• the primary processing component 11 then generates a primary command for controlling an opening of the line 3.
• the IS transmits powerline online request closing.
• the primary processing component 11 then generates a primary command for controlling a closure of the line 3.
• the primary power parameters also include a primary phase current measurement, a primary neutral current measurement, and a voltage measurement.
• the primary processing component 11 thus generates a primary control for controlling an opening of the line 3.
• the primary processing component 11 detects a return to normal, the primary processing component 11 generates a primary command for controlling a closure of the line 3.
• the primary control generated by the primary processing component 11 is then transmitted by the primary transceiver 10 of the electric meter 1 to the secondary transceiver 24 of the circuit breaker 2.
• the secondary processing component 28 of the circuit breaker 2 then acquires the primary control and drives the bistable relay 21 so as to open or close the cut-off device 20 as a function of the primary control.
• the line carrier communication between the electric meter 1 and the SI or the data concentrator uses the first frequency band
• the line carrier communication between the electric meter 1 and the circuit breaker 2 uses the second frequency band. frequency band.
• the system according to the invention is thus further secured by using different frequency bands.
• the circuit breaker 2 also uses the cut-off device 20 to cut the line 3 when secondary events occur which, in a conventional circuit-breaker, cause said traditional circuit-breaker to use its own cut-off device to cut off the line. line or to close the line.
• the secondary processing component 28 of the circuit breaker 2 is thus arranged to acquire secondary power parameters relating to a power supply of the electrical installation 5 and to produce, from the secondary power parameters, a control secondary circuit for controlling opening or closing of the line 3.
• the secondary power parameters therefore correspond to the secondary events just mentioned.
• the secondary power parameters include a secondary phase current measurement, a secondary neutral current measurement and a downstream voltage measurement performed by the circuit breaker 2.
• the predetermined current threshold is here equal to 500mA.
• the secondary processing component 28 of the circuit breaker 2 considers that the electric meter 1 is no longer able to control the cutoff 20 for a primary event. The secondary processing component 28 then decides to itself control the cut-off device 20 when a primary event occurs and until the communication returns to normal between the electric meter 1 and the circuit breaker 2.
• the secondary voltage sensor of the circuit breaker 2 makes it possible, by measuring the downstream voltage at the terminals of the electrical installation 5, to detect a voltage generated by a power source of the electrical installation 5.
• the power source is for example a generator that relays a break sector.
• the electric meter 1 decides to control the opening of the breaking device 20 of the circuit breaker 2, the electric meter 1 sends an opening alarm message to the data concentrator relaying it. to the SI.
• the electric meter 1 decides to control the closing of the cut-off member 20 of the circuit breaker 2 ,. the electric meter 1 sends a closing alarm message to the data concentrator which relays it to the IS.
• a refusal alarm message is also sent by the circuit breaker 2 to the electric meter 1 when the circuit breaker 2 refuses to close the cut-off member 20 following a primary command intended to close the cut-off member 20 and produced by the 1.
• Such a refusal can occur when the circuit breaker 2 detects that an absolute value of the downstream voltage is greater than a predetermined voltage threshold, and therefore that a power source of the electrical installation 5 generates this downstream voltage.
• the circuit breaker 2 then refuses to close the cut-off device 20, as this would short-circuit the electrical distribution network 4 and the power source of the electrical installation 5.
• the circuit breaker 2 When the electric meter 1 transmits to the circuit breaker 2 a primary command 30 for controlling an opening of the line 3, the circuit breaker 2 opens the line 3 and transmits an opening validation message 31 to the electric meter 1. The electric meter 1 transmits then an opening alarm message 32 to the SI 33 via the data concentrator 34.
• the circuit breaker 2 When the electric meter 1 transmits to the circuit breaker 2 a primary command 35 intended to control a closing of the line 3, the circuit breaker 2 closes the line 3 and transmits a closing validation message 36 to the electric meter 1. The electric meter 1 then transmits a closing alarm message 37 to the SI 33 via the data concentrator 34.
• the circuit breaker 2 detects that the absolute value of the downstream voltage is greater than the predetermined voltage threshold, the circuit breaker 2 refuses the closure of the line 3 and sends to the electric meter 1 a refusal alarm message 38.
• the electric meter 1 When the SI 33 transmits an opening request 40 to the electric meter 1 via the data concentrator 34, the electric meter 1 produces a primary control 41 intended to control an opening of the line 3.
• the circuit breaker 2 opens the line 3 and transmits an opening validation message 42 to the electric meter 1.
• the electric meter 1 then transmits an opening alarm message 43 to the SI 33 via the data concentrator 34.
• the electric meter 1 When the SI 33 sends a closing request 45 to the electric meter 1 via the data concentrator 34, the electric meter 1 produces a primary command 46 intended to command a closing of the line 3.
• the circuit breaker 2 closes the line 3 and transmits a opening validation message 47 to the electric meter 1.
• the electric meter 1 then transmits an opening alarm message 48 to the SI 33 via the data concentrator 34.
• the secondary receiver ⁇ 24 is then, for example, a power line receiver in line single band operating on the second frequency band.
• the line could well be a three-phase line.
• the circuit breaker is then equipped with three breaking devices (one per phase) controlled simultaneously by a single command.
• the transmission of the serial number uses the EURIDIS protocol
• the "Flag” which consists in positioning a magnet on the front face of the electric meter, on which a connector optically communicates with the electric meter on the basis of the DLMS / COSEM / HDLC protocol.
• the communication between the electricity meter and the circuit breaker is here a power line communication in line. It is however possible to use a different communication (wired or not), and in particular radio frequency communication using for example the LoRa protocol (for LongRange) or the WM-Bus protocol (for Wireless Meter Bus).
• the electrical meter was positioned upstream of the circuit breaker, but the invention is applicable to a system in which the circuit breaker is located upstream of the electric meter.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Electromagnetism (AREA)
• Power Engineering (AREA)
• Artificial Intelligence (AREA)
• Evolutionary Computation (AREA)
• Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Family Cites Families (21)

• 2017
  • 2017-08-18 FR FR1757760A patent/FR3070218B1/fr active Active
• 2018
  • 2018-07-04 US US16/634,724 patent/US11761997B2/en active Active
  • 2018-07-04 EP EP18734581.4A patent/EP3669392A1/de active Pending
  • 2018-07-04 CN CN201880053514.XA patent/CN111033672A/zh active Pending
  • 2018-07-04 WO PCT/EP2018/068159 patent/WO2019034324A1/fr unknown

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