EP3033760B1 - Verfahren, vorrichtung und computerprogramm zum steuern eines mechatronischen schutzschalters - Google Patents

Verfahren, vorrichtung und computerprogramm zum steuern eines mechatronischen schutzschalters Download PDF

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Publication number
EP3033760B1
EP3033760B1 EP14750466.6A EP14750466A EP3033760B1 EP 3033760 B1 EP3033760 B1 EP 3033760B1 EP 14750466 A EP14750466 A EP 14750466A EP 3033760 B1 EP3033760 B1 EP 3033760B1
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Prior art keywords
circuit breaker
derivative
threshold
input current
voltage
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EP14750466.6A
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English (en)
French (fr)
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EP3033760A1 (de
Inventor
Jean-Pierre Dupraz
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General Electric Technology GmbH
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General Electric Technology GmbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere

Definitions

  • the present invention relates to the field of mechatronic circuit breaker devices and their tripping.
  • the information medium may be a transmissible medium such as an electrical or optical signal, which may be conveyed via an electrical or optical cable, by radio or by other means.
  • the program according to the invention can be downloaded in particular on an Internet type network.
  • the sensor 20 has an output connected to an input of a low pass filter 21.
  • the sensor 20 provides a measure dI e (t) / dt of the derivative of the current to the filter 21, which performs low-pass filtering to remove possible high frequency components that would disturb the measurement chain.
  • the filter 21 has an output connected to an input of an analog-digital converter 22.
  • the filter 21 provides the filtered derivative measurement to the converter 22 which performs an analog-to-digital conversion of the received signal.
  • a measurement chain of the derivative of the output current I s (t) of the circuit breaker 1 can be provided.
  • the sensor 40 has an output connected to an input of a low-pass filter 41.
  • the sensor 40 provides a measurement of s (t) / dt of the current derivative to the filter 41, which performs low-pass filtering to eliminate possible high frequency components that would disturb the measurement chain.
  • the filter 41 has an output connected to an input of an analog-to-digital converter 42.
  • the filter 41 provides the filtered derivative measurement to the converter 42 which performs an analog-to-digital conversion of the received signal.
  • the analog-digital converter 42 has an output connected to an input of a transponder 43 an output of which is connected to one end of a fiber optic cable.
  • the transponder 43 transforms the electrical signal that it receives from the converter 42 into an optical signal.
  • the other end of the fiber optic cable is connected to the relay 3 which receives the optical signal and operates as shown below.
  • the measurement chain of the derivative of the output current can also be implemented in different ways.
  • a circuit for measuring the input current I e (t) of the circuit breaker 1 can be provided.
  • This measurement chain comprises a sensor 50 of the input current I e (t). This is for example a resistive shunt. This measurement chain then comprises elements similar to those of the measurement chain of the derivative of the input current.
  • the sensor 50 has an output connected to an input of a low-pass filter 51.
  • the sensor 50 provides a measurement of the input current to the filter 51, which performs a low-pass filtering to eliminate any high-frequency components that disrupt the measurement chain.
  • the filter 51 has an output connected to an input of an analog-digital converter 52.
  • the filter 51 provides the measurement of the filtered input current to the converter 52 which performs an analog-to-digital conversion of the received signal.
  • the analog-digital converter 52 has an output connected to an input of a transponder 53, an output of which is connected to one end of an optical fiber cable.
  • the transponder 53 transforms the electrical signal that it receives from the converter 52 into an optical signal.
  • the other end of the fiber optic cable is connected to the relay 3 which receives the optical signal and operates as shown below.
  • the measurement chain of the input current can also be implemented in different ways.
  • a measurement circuit of the output current I s (t) of the circuit breaker 1 can be provided.
  • This measurement chain has elements similar to those of the corresponding upstream measurement chain.
  • a sensor 60 of the output current I s (t) is for example a resistive shunt.
  • the sensor 60 has an output connected to an input of a low-pass filter 61.
  • the sensor 60 provides a measurement of the current to the filter 61, which carries out a low-pass filtering to eliminate any high-frequency components which would disturb the chain. measurement.
  • the filter 61 has an output connected to an input of an analog-digital converter 62.
  • the filter 61 provides the measurement of the output current filtered to the converter 62 which performs an analog-to-digital conversion of the received signal.
  • the analog-to-digital converter 62 has an output connected to an input of a transponder 63, an output of which is connected to an end of a fiber optic cable.
  • the transponder 63 transforms the electrical signal that it receives from the converter 62 into an optical signal.
  • the measurement chain of the output current can also be implemented in different ways.
  • the invention can also take into account voltage measurements, or voltage derivative, both upstream and downstream of the circuit breaker.
  • a measurement chain can be provided respectively for the upstream voltage, the derivative of the upstream voltage, the downstream voltage and the derivative of the downstream voltage.
  • the downstream voltage measurement chain comprises a sensor 80, a low-pass filter 81, an analog-to-digital converter 82 and a transponder 83. These elements are connected in series and the transponder is connected to the relay 3 via a optical fiber.
  • the relay 3 receives the downstream voltage measurement.
  • the upstream voltage derivative measuring chain comprises a sensor 90, a low-pass filter 91, an analog-digital converter 92 and a transponder 93. These elements are connected in series and the transponder is connected to the relay 3 via an optical fiber. .
  • Relay 3 receives the upstream voltage derivative measurement.
  • the downstream voltage derivative measuring chain comprises a sensor 100, a low-pass filter 101, an analog-digital converter 102 and a transponder 103. These elements are connected in series and the transponder is connected to the relay 3 via an optical fiber.
  • the relay 3 receives the downstream voltage derivative measurement.
  • the relay 3 may furthermore comprise inputs for receiving remote programming data TP, such as data relating to the context of the network, or RS settings of different thresholds used according to the invention.
  • the remote programming data TP make it possible to adapt the decisions taken according to the invention to the topology of the network by distinguishing "normal" transient modes and "abnormal" transient regimes, the latter requiring tripping of the circuit breaker.
  • the figure 2 represents a first embodiment of the method according to the invention, in the form of a flowchart comprising steps E1 to E7.
  • step E2 is followed by step E3 at which the threshold exceeding is stored.
  • a timer is started during a first pass through step E3, that is to say when the timer is not already in progress.
  • step E4 is a test to determine if the timer is complete. As long as it is not completed, step E4 is followed by step E1 for measuring the derivative of the input current of the circuit breaker.
  • Step E4 is then followed by step E5 which is the sending by relay 3 of a tripping command of the circuit breaker.
  • Step E7 is then followed by step E1 for measuring the derivative of the input current.
  • Step E11 is the acquisition of the measurement of the derivative dI e (t) / dt of the input current I e (t) of the circuit breaker 1.
  • Step E12 is then followed by step E11 of measuring the derivative of the input current.
  • this embodiment further comprises the step E16 corresponding to the acquisition of the measurement of the voltage upstream of the circuit breaker.
  • Step E18 is then followed by step E16 of acquiring the measurement of the voltage upstream of the circuit breaker.
  • step E2 If the derivative of the input current of the circuit breaker is greater than the threshold S 1 , this confirms the result of step E2 or E12. The trip control of the circuit breaker must not be canceled.
  • step E20 is further followed by the step E23 at which is calculated the integral of the measured value of the derivative of the input current of the circuit breaker.
  • Steps E31 to E35 are similar to steps E1 to E5 of the first embodiment previously described.
  • step E32 is the calculation of the absolute value of the derivative measured in the previous step E31, and the comparison of the absolute value of the derivative of the input current of the circuit breaker with the first predetermined threshold S 1 .
  • Step E34 is then followed by step E35 which is the sending by relay 3 of a tripping command of the circuit breaker.
  • the predetermined number of successive times is equal to one.
  • the trip control of the circuit breaker is sent as soon as the absolute value of the derivative of the circuit breaker input current is greater than threshold S 1 .
  • the next step E37 corresponds to the calculation of the absolute value of the derivative measured in the preceding step, and the comparison of the absolute value of the derivative of the output current of the circuit breaker with the first predetermined threshold S 1 .
  • Step E37 is then followed by step E36 of measuring the derivative of the output current of the circuit breaker.
  • the Figures 6a to 6c respectively represent examples of current I e (t) input circuit breaker, derived from this current, and integral of this derivative.
  • the input current I e (t) is substantially constant until a time t 0 . It is assumed that at time t 0 , a fault appears. As a result, the current begins to grow from this moment.
  • the derivative of the input current of the circuit breaker thus goes from a zero value to a non-zero value, here positive, at time t 0 .
  • the integral of the derivative of the input current of the circuit breaker is zero until time t 0 . From time t 0 , it grows following the same slope as the current.
  • the Figures 7a to 7c respectively represent other examples of current I e (t) circuit breaker input, derivative of this current, and integral of this derivative.
  • the current decreases, its derivative takes a non-zero value and negative, and the integral of the derivative of the current also decreases.
  • the invention also extends to a computer program product comprising code instructions for performing the steps of the method as described above, when said program is run on a computer.
  • the invention is furthermore not limited to the use of the measurement of the derivative of the input current of the circuit breaker to provide the tripping control, but can also use the measurement of the derivative of the output current of the circuit breaker for ensure this command, the notions input / output and upstream / downstream are simply reversed.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)

Claims (12)

  1. Verfahren zur Steuerung eines mechatronischen Schutzschalters (1), der dazu ausgelegt ist, einen elektrischen Strom zu unterbrechen, der durch eine Einrichtung zur Übertragung elektrischer Energie fließt, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    - Erfassen einer Messung der Ableitung (dIe(t) / dt) des Stroms am Eingang des Schutzschalters,
    - Vergleichen des Absolutwerts der Ableitung des Stroms am Eingang mit einer ersten vorbestimmten Schwelle (S1),
    - Steuern des Ausschaltens des Schutzschalters, wenn der Absolutwert der Ableitung des Stroms am Eingang größer ist als die vorbestimmte erste Schwelle (S1).
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Schritt der Steuerung des Ausschaltens des Schutzschalters durchgeführt wird, wenn der Absolutwert der Ableitung des Stroms am Eingang während einer vorbestimmten Dauer größer ist als die erste Schwelle.
  3. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass es ferner die folgenden Schritte umfasst:
    - Berechnen des Integrals des gemessenen Werts der Ableitung des Stroms am Eingang,
    - Vergleichen des berechneten Integrals mit einer zweiten vorbestimmten Schwelle (S2), und
    dadurch, dass der Schritt der Steuerung des Ausschaltens des Schutzschalters durchgeführt wird, wenn ferner das berechnete Integral größer ist als die zweite Schwelle (S2).
  4. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass es ferner die folgenden Schritte umfasst:
    - Erfassen einer Messung des Stroms (Ie(t)) am Eingang des Schutzschalters,
    - Bestimmen eines Mittelwerts des gemessenen Stroms in einem gleitenden Zeitfenster,
    - Vergleichen des Mittelwerts des gemessenen Stroms mit einer dritten vorbestimmten Schwelle (S3), und
    dadurch, dass der Schritt der Steuerung des Ausschaltens des Schutzschalters durchgeführt wird, wenn ferner der Mittelwert des gemessenen Stroms größer ist als die dritte Schwelle.
  5. Verfahren nach Anspruch 3 beziehungsweise Anspruch 4, wobei die zweite Schwelle (S2) beziehungsweise die dritte Schwelle (S3) vom Mittelwert des Stroms am Eingang des Schutzschalters in einem Zeitraum abhängt, der der Überschreitung der ersten Schwelle (S1) vorangeht.
  6. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass es ferner die folgenden Schritte umfasst:
    - Erfassen einer Messung der Spannung stromaufwärts des Schutzschalters und/oder einer Messung der Spannung stromabwärts des Schutzschalters,
    - Berechnen eines Verhältnisses zwischen den gemessenen Spannungen stromaufwärts des Schutzschalters, bevor und nachdem erfasst worden ist, dass der Absolutwert der Ableitung des Stroms am Eingang des Schutzschalters größer ist als die erste Schwelle (S1), und/oder eines Verhältnisses zwischen den gemessenen Spannungen stromabwärts des Schutzschalters, bevor und nachdem erfasst worden ist, dass der Absolutwert der Ableitung des Stroms am Eingang des Schutzschalters größer ist als die erste Schwelle (S1);
    - Vergleichen des Verhältnisses zwischen den gemessenen stromaufwärtigen Spannungen und/oder des Verhältnisses zwischen den gemessenen stromabwärtigen Spannungen mit einer Spannungsverhältnisschwelle (SR),
    und dass der Schritt der Steuerung des Ausschaltens des Schutzschalters durchgeführt wird, wenn ferner das Verhältnis zwischen den gemessenen stromaufwärtigen Spannungen und/oder das Verhältnis zwischen den gemessenen stromabwärtigen Spannungen größer ist als die Spannungsverhältnisschwelle (SR).
  7. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass es ferner die folgenden Schritte umfasst:
    - Erfassen einer Messung der Ableitung der Spannung stromaufwärts des Schutzschalters und/oder einer Messung der Ableitung der Spannung stromabwärts des Schutzschalters,
    - Vergleichen der Ableitung der gemessenen stromaufwärtigen Spannung und/oder der Ableitung der gemessenen stromabwärtigen Spannung mit einer Spannungsableitungsschwelle (SDU),
    und dass der Schritt der Steuerung des Ausschaltens des Schutzschalters durchgeführt wird, wenn ferner die Ableitung der gemessenen stromaufwärtigen Spannung und/oder die Ableitung der gemessenen stromabwärtigen Spannung größer ist als die Spannungsableitungsschwelle (SDU).
  8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass es nach dem Schritt der Steuerung des Ausschaltens des Schutzschalters die folgenden Schritte umfasst:
    - Erfassen einer Messung der Ableitung des Stroms am Eingang des Schutzschalters,
    - Vergleichen des Absolutwerts der Ableitung des Stroms am Eingang mit der ersten Schwelle (S1),
    - Hemmen der Steuerung des Ausschaltens des Schutzschalters, wenn der Absolutwert der Ableitung des Stroms am Eingang nicht größer ist als die erste Schwelle (S1).
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass es nach dem Schritt der Steuerung des Ausschaltens des Schutzschalters ferner die folgenden Schritte umfasst:
    - Berechnen des Integrals des gemessenen Werts der Ableitung des Stroms am Eingang,
    - Vergleichen des berechneten Integrals mit der zweiten Schwelle (S2),
    und dass der Schritt des Hemmens der Steuerung des Ausschaltens des Schutzschalters durchgeführt wird, wenn ferner das berechnete Integral nicht größer ist als die zweite vorbestimmte Schwelle (S2).
  10. Verfahren nach einem der Ansprüche 1 bis 9, ferner umfassend die folgenden Schritte:
    - Erfassen einer Messung der Ableitung des Stroms am Ausgang des Schutzschalters,
    - Vergleichen des Absolutwerts der gemessenen Ableitung des Stroms am Ausgang des Schutzschalters mit der ersten Schwelle (S1),
    - wenn der Absolutwert der gemessenen Ableitung des Stroms am Ausgang des Schutzschalters größer ist als die erste Schwelle (S1) Vergleichen des Absolutwerts der gemessenen Ableitung des Stroms am Eingang des Schutzschalters mit dem Absolutwert der gemessenen Ableitung des Stroms am Ausgang des Schutzschalters zum Charakterisieren eines internen oder externen Fehlers des Schutzschalters.
  11. Vorrichtung zur Steuerung eines mechatronischen Schutzschalters (1), der dazu ausgelegt ist, einen elektrischen Strom zu unterbrechen, der durch eine Einrichtung zur Übertragung elektrischer Energie fließt, dadurch gekennzeichnet, dass sie umfasst:
    - eine Einheit zur Erfassung einer Messung der Ableitung (dIe(t) / dt) des Stroms am Eingang des Schutzschalters,
    - eine Informatikverarbeitungseinheit, die dazu ausgelegt ist, den Absolutwert der Ableitung des Stroms am Eingang mit einer ersten vorbestimmten Schwelle (S1) zu vergleichen,
    - eine Einheit zur Steuerung des Ausschaltens des Schutzschalters, wenn der Absolutwert der Ableitung des Stroms am Eingang größer ist als die erste vorbestimmte Schwelle (S1).
  12. Computerprogrammprodukt, das Codebefehle zur Durchführung der Schritte des Verfahrens nach einem der Ansprüche 1 bis 10 umfasst, wenn das Programm auf einem Computer ausgeführt wird.
EP14750466.6A 2013-08-13 2014-08-11 Verfahren, vorrichtung und computerprogramm zum steuern eines mechatronischen schutzschalters Active EP3033760B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1357974A FR3009766B1 (fr) 2013-08-13 2013-08-13 Procede, dispositif et programme d'ordinateur pour la commande d'un disjoncteur mecatronique
PCT/EP2014/067138 WO2015022280A1 (fr) 2013-08-13 2014-08-11 Procédé, dispositif et programme d'ordinateur pour la commande d'un disjoncteur mécatronique

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EP3033760A1 EP3033760A1 (de) 2016-06-22
EP3033760B1 true EP3033760B1 (de) 2017-07-19

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FR3074914B1 (fr) 2017-12-07 2019-11-29 Socomec Procede de detection de l'etat d'un appareil de protection electrique dans une installation electrique et dispositif de detection mettant en oeuvre ledit procede

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GB2443002A (en) * 2006-10-16 2008-04-23 Converteam Ltd dc power distribution system
EP2495745A1 (de) * 2011-03-04 2012-09-05 ABB Technology AG Stromanstiegsbegrenzung bei Gleichstromsystemen mit hoher Spannung
EP2523204B1 (de) * 2011-05-12 2019-09-04 ABB Schweiz AG Schaltungsanordnung und Verfahren zur Unterbrechung des Stromflusses in einem Gleichstrompfad

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EP3033760A1 (de) 2016-06-22
FR3009766B1 (fr) 2015-09-25
FR3009766A1 (fr) 2015-02-20
WO2015022280A1 (fr) 2015-02-19

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