• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This measurement sensor (10A, 10B, 10C) makes it possible to measure an electrical quantity of a phase of an alternating current for an overhead electrical network (4). The overhead network comprising at least two electrical conductors (8A, 8B, 8C), each electrical conductor (8A, 8B, 8C) being adapted to transmit the corresponding phase of the alternating current. The sensor (10A, 10B, 10C) comprises a metal plate (18) adapted to be disposed between the electrical conductor (8A, 8B, 8C) and the earth (1), the electrical quantity being determined according to a capacitance between the metal plate (18) and the earth (1). The sensor (10A, 10B, 10C) further comprises means (14) for electrically connecting the metal plate (18) to the corresponding electrical conductor (8A, 8B, 8C).
    公开号:FR3026488A1
    申请号:FR1459145
    申请日:2014-09-26
    公开日:2016-04-01
    发明作者:Xiaodong Shi；Pascal Houbre；Erick Contini；Olivier Coutelou；Michel Clemence
    申请人:Schneider Electric Industries SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a detector of a defect, with respect to the ground of a phase of an alternating current for an overhead electrical network. . In the field of overhead power grids, one problem is to ensure optimal operation of the network and to minimize the number of interruptions and faults of the alternating current transmitted on the network. When an interruption occurs in the network, it is necessary to identify and locate the interruption in order to restore power as quickly as possible. In addition, a common drawback is a defect in the phasing of the transmitted current that may occur along a transmission line of the network. In this regard, it is known to manufacture ground-based voltage sensors of a phase of the alternating current. By way of example, mention may be made of the thesis "Modeling and Performance Evaluation of a Three-phase Capacitive Voltage Sensor Topology" (S. Van der Merwe, H. J. Vermeulen, University of Stellenbosch). This document describes a detector for measuring a module and a phase of a voltage transmitted on an overhead electrical network. The detector is designed to be installed on demand under network electrical conductors such as high voltage lines. It comprises at least three differential sensors each being set at a floating electric potential very close to that of the earth. Each sensor is then considered as a capacitive voltage divider with two capacities to estimate to perform the current or voltage measurement. Of the two most difficult estimates is that relating to the capacitance between the sensor and the corresponding conductor of the overhead power grid. This capacity depends on the position of the sensor relative to the driver, which is subject to human error in the positioning of the sensor or displacement of the sensor and / or the driver due to weather conditions. The object of the invention is therefore to provide a sensor for improving the measurement of the voltage of a conductor of the overhead network to facilitate the detection of a possible defect. For this purpose, the subject of the invention is a sensor for measuring an electrical magnitude of a phase of an alternating current for an overhead electrical network, the overhead network comprising at least two electrical conductors, each electrical conductor being adapted to transmit the corresponding phase of the alternating current. The sensor comprises a metal plate capable of being disposed between the electrical conductor and the earth, the electrical quantity being determined according to a capacitance between the metal plate and the ground. According to the invention, the sensor further comprises means for electrically connecting the metal plate to the corresponding electrical conductor. Thanks to the invention, the metal plate of each sensor is at a floating electrical potential very close to that of the corresponding conductor. Therefore, the only capacity of the capacitive voltage divider that is to be estimated is the capacity between the metal plate and the earth, the other capacity corresponding to the electrical connection between the metal plate and the conductor. This simplifies the measurement of the voltage of the corresponding conductor, in particular for a three-phase network comprising a plurality of conductors. The capacity between the metal plate and the earth is furthermore not influenced by the orientation of the metal plate with respect to the earth, the earth being considered as an infinite surface. The errors on the measurements are then substantially reduced. Thus, the signal level obtained for the measurements is stronger and less noisy.
    [0002] According to advantageous but non-obligatory aspects of the invention, such a sensor comprises one or more of the following characteristics, taken separately or in any technically permissible combination: the sensor further comprises a device for measuring an electrical variable associated with the means the electrical magnitude being determined in addition to the measured electrical variable. - The electrical variable associated with the connecting means is a current. - The measuring sensor is a voltage sensor, the measured electrical quantity is a voltage of the respective electrical conductor. The subject of the invention is also a set of sensors for measuring an electrical quantity of a phase of an alternating current for an overhead electrical network, the overhead network comprising at least two electrical conductors. Each measuring sensor is as mentioned above, and in that each measuring sensor is intended to be associated with a respective electrical conductor. The invention also relates to a detector of a defect, with respect to the earth, of a phase of an alternating current for an overhead electrical network, the overhead network comprising at least two electrical conductors, each electrical conductor being adapted to transmit a corresponding phase of the alternating current. The detector comprises a set of sensors for measuring an electrical quantity of the corresponding phase, and a device for detecting the fault as a function of the measured electrical quantity or quantities. According to the invention, the set of measuring sensors is as mentioned above.
    [0003] According to other advantageous aspects of the invention, the detector comprises one or more of the following characteristics, taken separately or in any technically possible combination: the detection device is adapted to detect the fault as a function of each measured electrical quantity and a set of parameters depending on a set of electrical capacitances relating to the electrical conductors. Electrical capacities are estimated according to the position of each metal plate with respect to the electrical conductors and the earth, as well as the permittivity of the atmosphere around each metal plate. - Electrical capacities are estimated based only on the position of each metal plate with respect to electrical conductors and earth. - The set of capacities includes, for each metal plate, only the capacity between the metal plate and the ground and the capacity between the metal plate and each electrical conductor other than that to which the corresponding metal plate is electrically connected. Each capacity is estimated as a function of the distance between the metal plate and the element among the earth and the electrical conductor other than that to which the corresponding metal plate is electrically connected. The set of parameters is in the form of a matrix of capacitances, the matrix comprising M lines and N columns, M being the number of measuring sensors and N being the number of electrical conductors, the matrix preferably being square and numbers M and N being equal. The detector comprises means for mechanically connecting each measuring sensor to a respective electrical conductor, the mechanical connection means being configured so that the distance between said metal plate and the corresponding conductor is between 0 mm and 100 mm, preferably substantially equal to 50 MM. The invention also relates to a method for detecting a fault, with respect to the earth, of a phase of an alternating current for an overhead electrical network, the overhead network comprising at least two electrical conductors, each electrical conductor being adapted to transmit a corresponding phase of the alternating current. The method comprises the following steps: measuring, via at least one measuring sensor, an electrical quantity relating to at least one electrical conductor, and detecting the fault as a function of the measured electrical quantity or quantities, in which during the measurement step, each sensor is electrically connected to the corresponding electrical conductor. The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, given solely by way of nonlimiting example and with reference to the accompanying drawings, in which: FIG. 1 is a schematic representation of a detector according to the invention installed on a three-phase overhead electrical network, the detector comprising a set of sensors for measuring an electrical quantity of a corresponding phase of the overhead network and a detection device. the defect according to the measured quantity (s); FIG. 2 is a schematic representation of one of the measurement sensors and the detection device of FIG. 1; FIG. 3 is an equivalent circuit diagram of capacitors associated with a sensor connected to one of the conductors of the three-phase overhead electrical network; FIG. 4 is a diagram similar to that of FIG. 3 after a simplification; FIG. 5 is a simplified equivalent diagram of capacitors associated with all the sensors, each sensor being connected to a respective conductor of the three-phase overhead electrical network, and FIG. 6 is a flowchart of a method for detecting a defect according to the invention. In FIG. 1, an electrical system 2 is shown schematically and comprises an overhead electrical network 4 and a detector 6 of a defect, with respect to the earth 1, of a phase P of an alternating current flowing through the network 4. The electrical system comprises, in addition optional, a device 7 for centralizing data from several detectors 6. The overhead electrical network 4 comprises three electrical conductors 8A, 8B and 80. Each electrical conductor 8A, 8B, 8C is configured to transmit the corresponding phase P of the alternating current. In particular, a first conductor 8A transmits a first phase PA, a second conductor 8B transmits a second phase PB and a third conductor 8C transmits a third phase P. The detector 6 connected to the network 4 comprises a set of three measurement sensors 10A, 10B, 10C, namely a first measuring sensor 10A, a second measuring sensor 10B and a third measuring sensor 100, each comprising a metal plate 18 adapted to be arranged between the conductor 8 and the ground 1. The metal plate 18 is not electrically connected to earth 1. In other words, this metal plate 18 is electrically floating relative to the earth 1.
    [0004] The detector 6 also comprises a device 12 for detecting the fault as a function of magnitudes G measured by the sensors 10A, 10B, 100. The detector 6 further comprises means 14 for electrically connecting each metal plate 18 to the electrical conductor 8A, 8B , 80 corresponding.
    [0005] The detector 6 also comprises means 15 for mechanically connecting the measuring sensor 10A, 10B, 100 with the corresponding electrical conductor 8A, 8B, 80. D denotes the distance between the metal plate 18 of the sensor 10A, 10B, 100 and the corresponding electrical conductor 8A, 8B, 80. The mechanical connection means 15 are configured so that the distance D is between 0 mm and 100 mm, preferably substantially equal to 50 mm. Each sensor 10A, 10B, 100 is able to measure the electrical magnitude G of the phase P of the alternating current and is provided for each electrical conductor 8A, 8B, 80. The electrical quantity G is determined as a function of a capacitance C between the metal plate 18 and earth 1. The measured electrical quantity G is, for example, the voltage UA, UB, Uc of the corresponding electrical conductor 8A, 8B, 80, and each measuring sensor 10 is then a voltage sensor. Each sensor 10A, 10B, 100 further comprises a member 16 for measuring an electric variable v associated with the electrical connection means 14. The electrical quantity G is further determined as a function of said variable electric v measured.
    [0006] In the example of FIGS. 3 to 5, the measured electrical variable ν is a current I. As a variant, the measured electrical variable ν is deduced from a measurement of voltage V. Each measurement sensor 10A, 10B, 100 comprises a first information processing unit 19 able to transmit, to the detection device 12 and via a transceiver 20, a radio signal Si relative to the measured variable G.
    [0007] The detection device 12 is configured to detect the defects as a function of the electrical quantity or quantities G measured by the measurement sensors 10A, 10B, 100, and in addition, as a function of a set of parameters Ep defined for the network 4. The detection device 12 comprises a transceiver 22 able to communicate with the transceiver 20 of each measurement sensor, and to receive the radioelectric signals 51 from the measurement sensors 10A, 10B, 100. In other words, each sensor 10A, 10B, 100 and the detection device 12 are connected via a radio link 21. The detection device 12 comprises a second information processing unit 23, formed for example of a processor and an associated memory to the processor, not shown, the memory being able to store a detection algorithm 24, also called detection software, the processor being able to execute the detaching algorithm 24. The detection algorithm 24 is adapted to detect a fault, with respect to the earth 1, of at least one phase PA, PB, Pc as a function of the electrical magnitude or quantities G measured by the at least one of the sensors. measurement 10. The transceiver 22 is also configured to transmit a radio signal S2 to the centralization device 7 in order to signal, if necessary, the detection of a fault. The centralization device 7 comprises a transceiver 26 able to communicate with the transceiver 22 of the detection device 12, and in particular to receive the signal S2 from the detection device 12. In other words, the detection device 12 and the centralization device 7 are connected via a radio link 25. The centralization device 7 comprises a third information processing unit 27, formed for example of a processor and a memory associated with the processor, not shown, the memory being able to store a correction algorithm 28, also called correction software, the processor being able to execute the correction algorithm 28. The correction algorithm 28 is configured to determine the or the possible corrections to be applied to the alternating current of the aerial network 4 as a function of the fault detected by the detection device 12. FIG. 3 represents an equivalent capacity diagram associated with the sensor 10B connected via the electrical connection means 14 to the network conductor 8B 4, which further comprises the electrical conductors 8A and 80. The structure of the network 4 induces parasitic capacitances between all these elements. When the measurement sensor 10B is set up in the network 4, the values of these capacitors are constant and the parameter set Ep corresponds to a set of capacitors E. With regard to these capacitors, the capacitance CAT is noted. between the conductor 8A and the ground 1. CBT is also noted the electrical capacitance between the electrical conductor 8B and the ground 1 and Cci- the electrical capacitance between the electrical conductor 80 and the ground 1. There is also CAB, CBC and CAC, the electrical capacitors respectively between the conductors 8A and 8B, between the conductors 8B and 80 and between the conductors 8A and 80. In addition, CA10, CB10 and Cc10 are noted, the electrical capacitances between the metal plate of the measuring sensor 10A, 10B , Corresponding respectively to the conductor 8A, the conductor 8B and the conductor 80. Finally, CioT is the electrical capacitance between the metal plate of the measuring sensor 10A, 10B, 100 and the ground 1. From moreover, UA is noted the potential difference between the first conductor 8A and the ground 1, which corresponds to the voltage transmitted by the first conductor 8A. Similarly, UB denotes the potential difference between the second conductor 8B and the ground 1, which corresponds to the voltage transmitted by the second conductor 8B, and note the potential difference between the third conductor 80 and the ground 1, which corresponds to the voltage transmitted by the third conductor 80. The measuring member 16 included in the second sensor 10B is able to measure a current IB, the measured variable then being the current IB. The equivalent diagram of FIG. 3 shows that the current IB is a function of the potential difference UB, the potential difference UA and the potential difference U as well as the set of capacitors E. The equation is then following: IB = f (Ec, UA, UB, Uc) (1) In order to identify the fault, it is necessary to estimate the phase PB of the current transmitted in the second conductor 8B, for example from the voltage UB which must be estimated. From equation 1, the voltage UB of the second conductor is estimated as a function of the current IB, the set of capacitances Ec as well as the voltage UA of the first conductor and the voltage U of the third conductor. We therefore have the following equation: UB = f (IB, Ec, UA, Uc) (2) In the equivalent diagram of FIG. 3, it is considered that for the measurement of the current IB, the capacities CAB, CBC, CAC, as well as the CAT, CBT and CcT capacities that are directly associated with a potential difference among UA, UB e1 Uc, are negligible. According to this simplification, these capacities are then not taken into account for the measurement of the magnitude G. In addition, it is noted that the capacitance OBi 0 has an electrical impedance substantially greater than an internal resistance of the measuring member 16 of the second measuring sensor 10B, and its impact on the measurement is then negligible. According to this additional simplification, the capacity OBi 0 is also not taken into account for the measurement of the magnitude G. This then makes it possible to simplify the equivalent diagram of FIG. 3 and thus to simplify the estimation of the voltage UB for the second driver 8B. FIG. 4 shows the simplified equivalent diagram, which shows the only capacities taken into account for measuring the current IB, corresponding to the measured variable v, these capacities defining a reduced set Ec 'of three capacitors. The application of Thévenin's theorem to the simplified equivalence diagram in FIG. 4 makes it possible to define the current IB as the result of an addition between three separate partial currents IBA, IBB and 'BC, each partial current IBA, IBB, BC being measured by taking into account, each time, a single potential difference among the potential differences UA, UB, U. Each partial current IBA, IBB, BC is then a function of the corresponding potential difference and one or several electrical capacitances of the set E. Then we have the following equation: = IBA IBB = PCA1OUA i (-1) (C1OT -I- CA10 -I- CC10) 14 PCC1OUA) (3) In particular, the partial flow IBA is a product between the voltage UA of the first conductor and the capacitance Cmo. Similarly, the partial current IBs is a product between the voltage Us of the third conductor and the capacitance Oslo. Finally, the partial current IBB is a product between the voltage UB of the second conductor and a sum of the electrical capacitances C10T, CA10, CC10. In order to estimate the voltage UA of the first conductor and the voltage Us of the third conductor, to solve the equation (3), the first sensor 10A and the third sensor 100 are then also taken into account. As represented in FIG. 5, the simplified equivalent diagram then represents the three measurement sensors 10A, 10B and 100 and a set Es "of nine capacitors, a current IA corresponding to the variable measured by the first sensor 10A and a corresponding current Is to the variable measured by the third sensor 100. Similarly, the phases PA and Ps of the voltages UA of the first conductor and Us of the third conductor are determined by writing the equations 1, 2 and 3 for the currents IA and Is. The equations 3 for the currents IA, IB and Is are then written as a single matrix equation, where a vector of the measured currents IA, IB and Is is estimated as a function of a product between a matrix C of the capacitors and a vector of the Voltages UA, UB and U. Then we have the following equation: (IA 7C1OTAI-CB10A + CC10A -CB10A -CC10A (IJul IB) = iLÛ -C A10 `-'10T '` --A10' `--C10 - CC10-CA10C -CB10C C1OTH-CA10C + CB107 UcJ B -LBB (4) The matrix C has M rows and N columns, where M is the number of measuring sensors 10A, 10B, 100, and N is the number of electrical conductors 8A, 8B, 80. For the overhead power network 4, which comprises three electrical conductors 8A, 8B, 80 and three measuring sensor 10A, 10B, 100, the matrix C is square, the numbers M and N being identical, namely equal to 3. The electrical capacitances of the matrix C are estimated as a function of the position of each metal plate 18 relative to the electrical conductors 8A, 8B, 8C and to the earth 1 and according to a permittivity of the atmosphere Er present around each measuring sensor 10A, 10B, 100. Since the measuring sensors 10A, 10B and 100 are exposed to the same atmosphere, the permittivity Er influences the capacities of the matrix C in the same way and thus becomes a negligible parameter for the measurement of the magnitude G. The capacities are thus estimated only according to the position of each plate m In particular, the capacity between each metal plate 18 and the earth 1 is estimated as a function of the distance between said plate 18 and the earth 1, and the capacity between each metal plate 18 and the electrical conductor 8A, 8B, 80 other than that which is connected to the corresponding metal plate 18 is estimated as a function of the distance between said plate 18 and said other electrical conductor 8A, 8B, 80.
    [0008] The three voltages UA, UB and U are estimated as a function of the matrix C and currents IA, IB and lc, according to the following equation, obtained from equation (4): UA UB) = [C ] -1 (IB (IA) Uc JOE) Ic The matrix C is a non-singular matrix, its determinant being non-zero. This is because the sum of the coefficients of its diagonal is substantially greater than the sum of the coefficients that are not on the diagonal. The matrix C is therefore easily invertible, and this inversion does not give rise to any significant error in the estimation of the voltages UA, UB, U. In the example described, the currents IA, IB, IC and the voltages UA, UB , Uc are sinusoidal signals, the current transmitted by the network 4 being a sinusoidal alternating current. In optional supplement, the network 4 transmits a non-sinusoidal current and the currents IA, 113, IC and the voltages UA, UB, Uc are non-sinusoidal signals. Equation (5) is then generalized by the following equation: (UA (t) = -1 [C. (6) B (t) I RA (t) c (t) RB (t) The operation of A method of detecting a defect according to the invention will now be described When the conductors 8A, 8B, 8C of the overhead electrical network 4 are traversed by the alternating current and when each measuring sensor 10A, 10B, 10C is electrically connected to a respective electrical conductor 8A, 8B, 8C via the electrical connection means 14, the electrical quantity G is measured for each of the conductors 8A, 8B, 8C, during an initial step 100. (5) The measured quantity G is, for example, the voltage UA, UB, Lic of each of the conductors 8A, 8B, 80. To estimate the value of the magnitude G associated with each of the conductors 8A, 8B, 80, the associated electrical variable v the connecting means 14 is for example measured for each of said conductors In the example described, the currents IA, IB, IC flowing in the connection means 14 are then measured to estimate the value of the voltages UA, UB, Uc using the matrix of the capacitors C. The values of the currents IA, IB, Ic measured are then transmitted by the processing unit d. 19 and the transceiver 20 to the detection device 12 via the radio link 21, and the detection device 12 then estimates the values of the voltages UA, UB, Uc with the aid of its information processing unit 23, depending on the matrix C, which is preferably predetermined, and values of the measured currents 1A, IB, IC received from each measuring sensor 10A, 10B, 100. In a subsequent step 110, detection algorithm 24 detects a possible defect and its direction of at least one of the phases PA, PB and Pc with respect to the earth 1, from the estimated values of the voltages UA, U13, U.
    权利要求:
    Claims (14)
    [0001]
    CLAIMS1.- A sensor (10A, 10B, 10C) for measuring an electrical quantity (G) of a phase (PA, PB, Pc) of an alternating current for an overhead electrical network (4), the overhead network comprising at least two electrical conductors (8A, 8B, 8C), each electrical conductor (8A, 8B, 8C) being adapted to transmit the corresponding phase of the alternating current, the sensor (10A, 10B, 10C) comprising a metal plate (18) adapted to be disposed between the electrical conductor (8A, 8B, 8C) and the earth (1), the electrical magnitude (G) being determined as a function of a capacitance between the metal plate (18) and the earth (1), characterized in that the sensor (10A, 10B, 10C) further comprises means (14) for electrically connecting the metal plate (18) to the corresponding electrical conductor (8A, 8B, 8C).
    [0002]
    2. The sensor (10A, 10B, 10C) according to claim 1, wherein the sensor (10A, 10B, 10C) further comprises a member (16) for measuring an associated electrical variable (IA, IB, Ic). to the connection means (14), the electrical quantity being determined in addition to the measured electrical variable.
    [0003]
    3.- sensor (10A, 10B, 10C) according to one of the preceding claims, wherein the electric variable (IA, IB, Ic) associated with the connecting means (14) is a current (I).
    [0004]
    4. A sensor according to any one of the preceding claims, wherein the measuring sensor (10A, 10B, 10C) is a voltage sensor, the measured electrical magnitude (G) being a voltage (UA, UB, Uc) of electrical conductor (8A, 8B, 8C).
    [0005]
    5. A set of sensors (10A, 10B, 10C) for measuring an electrical quantity of a phase (PA, PB, PC) of an alternating current for an overhead electrical network (4), the overhead network comprising at least minus two electrical conductors (8A, 8B, 8C), characterized in that each measuring sensor (10A, 10B, 10C) is according to any one of the preceding claims, and in that each measuring sensor is intended to be associated with a respective electrical conductor (8A, 8B, 8C).
    [0006]
    6.- Detector (6) of a defect, with respect to earth (1), of a phase (PA, PB, PC) of an alternating current for an overhead electrical network (4), the overhead network comprising at least two electrical conductors (8A, 8B, 80), each electrical conductor being adapted to transmit a corresponding phase of the alternating current, the detector (6) comprising: - a plurality of measurement sensors (10A, 10B, 100) an electrical quantity of a corresponding phase (PA, PB, Pc), and - a device (12) for detecting the fault as a function of the measured electrical quantity (s) (G), characterized in that the set of sensors ( 10A, 10B, 100) is in accordance with claim 5.
    [0007]
    7. Detector according to one of the preceding claims, wherein the detection device (12) is adapted to detect the defect according to each measured electrical quantity (G) and a set of parameters (En) dependent on a set of electrical capacitances (Es) relating to the electrical conductors (8A, 8B, 80).
    [0008]
    8. The detector according to claim 7, wherein the electrical capacitances (Es) are estimated as a function of the position of each metal plate (18) with respect to the electrical conductors (8A, 8B, 80) and the earth (1). as well as the permittivity (Er) of the atmosphere around each metal plate (18).
    [0009]
    9. A detector according to claim 7, wherein the electrical capacitances are estimated as a function only of the position of each metal plate (18) with respect to the electrical conductors (8A, 8B, 80) and the earth (1).
    [0010]
    10. The detector of claim 9, wherein the set of capacities (Es) comprises, for each metal plate (18), only the capacity between the metal plate (18) and the earth (1) and the capacity between the metal plate (18) and each electrical conductor (8A, 8B, 80) other than that to which the corresponding metal plate (18) is electrically connected.
    [0011]
    11. A detector according to claim 10, wherein each capacitance is estimated as a function of the distance between the metal plate (18) and the element among the earth (1) and the electrical conductor (8A, 8B, 80) other than the one to which the corresponding metal plate (18) is electrically connected.
    [0012]
    12. The detector as claimed in one of claims 7 to 11, in which the set of parameters (En) is in the form of a matrix (C) of the capacitors, the matrix (C) comprising M rows and N columns, M being the number of measuring sensors (10A, 10B, 100) and N being the number of electrical conductors (8A, 8B, 80), the matrix (C) being preferably square and the numbers M and N being equal.
    [0013]
    13. Detector according to one of the preceding claims, wherein the detector (6) comprises means (15) for mechanical connection of each measuring sensor (10A, 10B, 100) to a respective electrical conductor, the means (15) ) of mechanical connection being configured so that the distance between said metal plate (18) and the corresponding conductor (8A, 8B, 80) is between 0 mm and 100 mm, preferably substantially equal to 50 mm.
    [0014]
    14. A method for detecting a fault, with respect to earth (1), of a phase (PA, PB, Pc) of an alternating current for an overhead electrical network (4), the overhead network comprising at least minus two electrical conductors (8A, 8B, 80), each electrical conductor being adapted to transmit the corresponding phase of the alternating current, the method comprising the following steps: - a) the measurement (100), via at least one measurement sensor ( 10A, 10B, 100), an electrical quantity (G) relative to at least one electrical conductor (8A, 8B, 80), - b) detecting (110) the fault as a function of the measured electrical quantity or quantities, the method being characterized in that, during measurement step (100) a), each measuring sensor (10A, 10B, 100) is electrically connected to the corresponding electrical conductor (8A, 8B, 80).
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    同族专利:
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    EP3001207A1|2016-03-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20080246507A1|2003-07-25|2008-10-09|Power Measurement Ltd.|Body Capacitance Electric Field Powered Device For High Voltage Lines|
    WO2013158754A1|2012-04-17|2013-10-24|Georgia Tech Research Corporation|Voltage sensor systems and methods|EP3267461A1|2016-07-08|2018-01-10|Schneider Electric Industries SAS|Interconnect module of a circuit breaker and of a contactor for an electrical assembly comprising a voltage sensor|
    EP3267462A1|2016-07-08|2018-01-10|Schneider Electric Industries SAS|Interconnect module of a circuit breaker and of a contactor for an electrical assembly|
    US10444271B2|2015-09-10|2019-10-15|Schneider Electric Industries Sas|Device for monitoring an electrical conductor and electrical installaton comprising such a device|
    FR3047805B1|2016-02-12|2018-03-16|Schneider Electric Industries Sas|DEVICE FOR MEASURING AN ELECTRICAL SIZE OF A PHASE OF AN ALTERNATIVE ELECTRICAL CURRENT OF AN AERIAL ELECTRICAL NETWORK|
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    优先权:
    申请号 | 申请日 | 专利标题
    FR1459145|2014-09-26|
    FR1459145A|FR3026488B1|2014-09-26|2014-09-26|VOLTAGE SENSOR, ASSEMBLY AND FAULT DETECTOR OF AN AIR POWER NETWORK COMPRISING SUCH A SENSOR|FR1459145A| FR3026488B1|2014-09-26|2014-09-26|VOLTAGE SENSOR, ASSEMBLY AND FAULT DETECTOR OF AN AIR POWER NETWORK COMPRISING SUCH A SENSOR|
    ES15186784T| ES2767414T3|2014-09-26|2015-09-25|Voltage sensor, assembly and defect detector of the aerial electrical network that includes such a sensor|
    EP15186784.3A| EP3001207B1|2014-09-26|2015-09-25|Voltage sensor, assembly and fault detector of an overhead electrical network comprising such a sensor|
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