WO2015136641A1 - Dispositif de diagnostic d'anomalie pour transformateur de courant à instrument rogowski - Google Patents

Dispositif de diagnostic d'anomalie pour transformateur de courant à instrument rogowski Download PDF

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Publication number
WO2015136641A1
WO2015136641A1 PCT/JP2014/056492 JP2014056492W WO2015136641A1 WO 2015136641 A1 WO2015136641 A1 WO 2015136641A1 JP 2014056492 W JP2014056492 W JP 2014056492W WO 2015136641 A1 WO2015136641 A1 WO 2015136641A1
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WIPO (PCT)
Prior art keywords
rogowski
output
rogowski coil
ratio
abnormality diagnosis
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PCT/JP2014/056492
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English (en)
Japanese (ja)
Inventor
克彦 藤岡
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三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201480071900.3A priority Critical patent/CN105899959B/zh
Priority to PCT/JP2014/056492 priority patent/WO2015136641A1/fr
Priority to JP2014536050A priority patent/JP5638729B1/ja
Publication of WO2015136641A1 publication Critical patent/WO2015136641A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault

Definitions

  • the present invention relates to an abnormality diagnosis device for a current transformer for Rogowski instrument.
  • the Rogowski instrument current transformer which uses a Rogowski coil (air-core coil) to measure current, is used in the Rogowski coil itself to carry out highly accurate and reliable measurements over a long period of time.
  • a diagnostic function for detecting abnormalities and abnormalities such as disconnection of the cable connecting the Rogowski coil and the signal processing circuit is required.
  • Patent Document 1 describes a disconnection detection device for a protection control device connected to a three-phase line. This disconnection detection device was measured with a voltage input circuit that measures a three-phase voltage via an instrument transformer, and a current input circuit that measures a three-phase current via an iron-core instrument current transformer.
  • Voltage effective value calculation means for calculating the effective value of the voltage based on the voltage
  • active power calculation means for calculating the three-phase active power based on the measured voltage and current
  • Current effective value calculating means for calculating a value
  • reactive power calculating means for calculating three-phase reactive power based on the measured voltage and current
  • three-phase active power, three-phase reactive power, voltage effective value, and current effective Determination means for determining disconnection based on the value. Further, this determination means determines that a disconnection exists if the three-phase active power and the three-phase reactive power are each equal to or less than the set value and the current effective value or the voltage effective value is equal to or greater than the set value.
  • Patent Document 1 requires three-phase voltage and current measurement values for determination of disconnection, and is difficult to apply to an apparatus that measures only a single phase.
  • the present invention has been made in view of the above, and is capable of diagnosing an abnormality from only a measured value of a single-phase current, and does not require setting of a prior settling value.
  • An object is to provide an apparatus.
  • an abnormality diagnosis device for a current transformer for a Rogowski instrument uses the first Rogowski coil surrounding the outer periphery of a single-phase line.
  • An adder connected to calculate an output sum that is a sum of a first output that is an output of the first Rogowski coil and a second output that is an output of the second Rogowski coil; A first ratio that is connected to the first and second Rogowski coils via the cable and connected to the adder, and is an absolute value of a ratio between the first output and the output sum; and The second output and the A ratio calculation unit that calculates a second ratio that is an absolute value of the ratio with the sum, and is connected to the ratio calculation unit, and based on the first ratio and the second ratio, at least the first ratio And a determination unit for determining an abnormality of the first Rogowski coil and the cable that connects the Rogowski coil and the adding unit.
  • an abnormality diagnosis device for a Rogowski instrument current transformer that can diagnose an abnormality only from a measured value of a single-phase current and that does not require a settling value in advance.
  • the ratio is used for abnormality diagnosis, it is possible to make a diagnosis in which the influence of current fluctuation is suppressed.
  • FIG. 1 is a diagram showing a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to Embodiment 1.
  • FIG. 2 is a diagram illustrating determination information included in the determination unit according to the first embodiment.
  • FIG. 3 is a diagram illustrating a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to a modification of the first embodiment.
  • FIG. 4 is a diagram illustrating a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to the second embodiment.
  • FIG. 5 is a diagram illustrating determination information included in the determination unit according to the second embodiment.
  • FIG. 6 is a diagram illustrating a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to the third embodiment.
  • FIG. 7 is a diagram illustrating determination information included in the determination unit according to the third embodiment.
  • FIG. 8 is a diagram illustrating a connection mode of terminals of a Rogowski coil according to the third embodiment.
  • FIG. 1 is a diagram showing a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to the present embodiment.
  • a measurement Rogowski coil 18 (first Rogowski coil) is installed on the single-phase line 2, and a signal processing circuit (not shown) is connected to the Rogowski coil 18 via a cable 3. ) Is connected.
  • the single-phase line 2 is a line of any one of the three phases, and constitutes a main circuit of a gas insulated switchgear, for example.
  • the Rogowski coil 18 is installed so as to surround the outer periphery of the single-phase line 2 in a non-contact manner in order to measure the current flowing through the single-phase line 2.
  • the signal processing circuit (not shown) includes an integration circuit and the like, and outputs a current measurement value from the output of the Rogowski coil 18.
  • a Rogowski instrument current transformer is constituted by the Rogowski coil 18 and a signal processing circuit (not shown).
  • the abnormality diagnosis device 1 is connected to the Rogowski coil 18 via the cable 3 and the cable 3a branched from the cable 3.
  • the cable 3a branches from a branch point P1 on the cable 3 and is connected to the abnormality diagnosis apparatus 1.
  • a Rogowski coil 19 for diagnosis (second Rogowski coil) is installed on the single-phase line 2, and the Rogowski coil 19 is connected to the abnormality diagnosis device 1 via the cable 4.
  • the Rogowski coil 19 is installed so as to surround the outer periphery of the single-phase line 2 in a non-contact manner in order to measure the current flowing through the single-phase line 2.
  • the Rogowski coil 19 is installed for diagnosis separately from the Rogowski coil 18 for measurement.
  • the current transformation ratio of the Rogowski coil 18 and the current transformation ratio of the Rogowski coil 19 are equal.
  • I is a current flowing through the single-phase line 2
  • I ′ is a time derivative of I
  • H is a mutual inductance. The same applies to the Rogowski coil 19.
  • the abnormality diagnosis apparatus 1 includes an adder 23, a ratio calculation unit 25, and a determination unit 26.
  • the adder 23 is connected to the Rogowski coil 18 through the cables 3 and 3 a and is connected to the Rogowski coil 19 through the cable 4.
  • the adder 23 is connected to the ratio calculation unit 25.
  • the ratio calculation unit 25 is connected to the Rogowski coil 18 via the cables 3 and 3a. Specifically, the ratio calculation unit 25 is connected to another signal path branched from the signal path connecting the end of the cable 3 a and the adder 23. Note that the branch point in this case is indicated by P2.
  • the ratio calculation unit 25 is connected to the Rogowski coil 19 via the cable 4. Specifically, the ratio calculation unit 25 is connected to another signal path branched from the signal path connecting the end of the cable 4 and the adder 23. In this case, the branch point is indicated by P3.
  • the output S1 (first output) of the Rogowski coil 18 and the output S3 (second output) of the Rogowski coil 19 are input.
  • the adder 23 can be composed of an analog circuit.
  • and the ratio S5
  • the ratio calculation unit 25 can be configured by an analog circuit, for example. In this case, the ratio calculation unit 25 includes an analog divider or the like. The determination part 26 can also be comprised, for example with an analog circuit.
  • FIG. 2 is a diagram illustrating determination information included in the determination unit according to the present embodiment.
  • the determination unit 26 performs abnormality diagnosis using the ratios S4 and S5 and the determination information of FIG. That is, when the ratios S4 and S5 are input, the determination unit 26 refers to determination information given in advance and obtains a determination result corresponding to the ratios S4 and S5.
  • the determination unit 26 determines that both the measurement-use Rogowski coil 18 and the diagnosis-use Rogowski coil 19 are normal.
  • 2
  • S5 2
  • the determination unit 26 determines that the measurement Rogowski coil 18 is abnormal or the cable 3 or 3a is disconnected.
  • ⁇ represents a value equal to or greater than A, which is a preset value greater than 2.
  • S1 includes a minute signal such as noise or self-offset. Therefore, the output from the Rogowski coil 18 is 0.
  • the actual calculation value of S4 by the ratio calculation unit 25 is a value larger than 2.
  • the actual calculation value of S5 by the ratio calculation unit 25 is approximately 1. Therefore, as shown in FIG.
  • A can be set based on the maximum signal of the analog circuit, for example, the size of the maximum signal itself or smaller than the maximum signal. In addition, it can be set to a value that can be distinguished from 2 including an error.
  • the determination unit 26 determines that the diagnostic Rogowski coil 19 is abnormal or the cable 4 is disconnected.
  • “ ⁇ ” is as described above.
  • S3 is substantially 0 as described above, and in this case, the actual calculation value of S5 by the ratio calculation unit 25 is assumed to be a value larger than 2. Is done. Further, it is assumed that the actual calculation value of S4 by the ratio calculation unit 25 is approximately 1. Therefore, as shown in FIG.
  • the determination unit 26 determines that the current flowing through the single-phase line 2 is 0 (main circuit current is zero) or the adder 23 is abnormal.
  • “ ⁇ ” is as described above. First, the case where the current flowing through the single-phase line 2 is 0 (main circuit current is zero) will be described. In this case, it is assumed that both S1 and S3 have values close to 0. Therefore, in this case, the ratio calculation unit 25 is configured to output a value greater than or equal to A as S4 and S5 without calculating
  • the ratio calculation unit 25 determines whether or not
  • ⁇ ⁇ a value greater than or equal to A is output as S4 and S5.
  • a comparator circuit can be used for comparison with the minute value ⁇ .
  • the abnormality diagnosis apparatus 1 can output the determination result of the determination unit 26 via an output unit (not shown).
  • An output part is a display part, for example, and can display the determination result according to ratio S4, S5.
  • the output S1 of the Rogowski coil 18 and the output S3 of the Rogowski coil 19 are input to the adder 23 and the ratio calculation unit 25, respectively.
  • the adder 23 calculates the sum S2 of S1 and S3, and outputs S2 to the ratio calculation unit 25.
  • the ratio calculation unit 25 calculates the ratios S4 and S5 using S1 to S3, and outputs the ratios S4 and S5 to the determination unit 26.
  • the determination unit 26 obtains a determination result according to the ratios S4 and S5 with reference to the determination information given in advance, so that the abnormality diagnosis of the Rogowski instrument current transformer is performed. Diagnosis including
  • diagnosis is performed using the signal ratios S4 and S5, the influence of current fluctuation is suppressed, and the accuracy of diagnosis is improved. That is, the magnitude of the current flowing through the single-phase line 2 varies depending on the state of the system or the load. Therefore, if the comparison judgment is made based on the magnitude of the output signals of the Rogowski coils 18 and 19, the influence of the error becomes large. , The accuracy of diagnosis decreases.
  • the current transformation ratio of the Rogowski coil 18 and the current transformation ratio of the Rogowski coil 19 are the same, but they may be different.
  • “both the measurement Rogowski coil 18 and the diagnosis Rogowski coil 19 are both normal” may be handled.
  • the ratios S4 and S5 used for the determination may be an absolute value of the ratio of S1 and S2 and an absolute value of the ratio of S3 and S2, respectively.
  • S4
  • , S5
  • S4
  • , S5
  • the ratio calculation unit 25 and the determination unit 26 can be configured by analog circuits. However, after converting S1 to S3 from analog values to digital values, hardware such as a CPU and a memory is provided. The ratio calculation process and the determination process may be performed by a computer.
  • FIG. 3 is a diagram showing a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to a modification of the present embodiment.
  • the abnormality diagnosis device 1a includes an adder 23, A / D converters 24a to 24c, a ratio calculation unit 25, and a determination unit 26.
  • the A / D converters 24 a to 24 c are arranged in the preceding stage of the ratio calculation unit 25.
  • the A / D converter 24a is arranged on a signal path connecting the branch point P2 and the ratio calculation unit 25, converts the output S1 of the Rogowski coil 18 from an analog value to a digital value, and outputs it to the ratio calculation unit 25. To do.
  • the A / D converter 24b is disposed on a signal path connecting the adder 23 and the ratio calculation unit 25, converts the output S2 of the adder 23 from an analog value to a digital value, and outputs the converted value to the ratio calculation unit 25.
  • the A / D converter 24c is arranged on a signal path connecting the branch point P3 and the ratio calculation unit 25, converts the output S3 of the Rogowski coil 19 from an analog value to a digital value, and outputs it to the ratio calculation unit 25 To do.
  • FIG. 3 the same components as those in FIG. 1 are denoted by the same reference numerals.
  • the ratio calculation unit 25 and the determination unit 26 can be realized as functional blocks in a calculation unit of a computer.
  • the ratio calculation unit 25 digitally processes the same process as the process performed by the ratio calculation unit 25 configured by an analog circuit. Further, “ ⁇ ” can be set to a value sufficiently larger than 2.
  • Other configurations of the present modification are the same as those in FIG. 1, and operations and effects of the present modification are as described with reference to FIGS.
  • FIG. Some substations may use two Rogowski coils for current measurement purposes.
  • the abnormality diagnosis of the current transformer for the Rogowski instrument is carried out using these Rogowski coils for measurement.
  • FIG. 4 is a diagram showing the configuration of the abnormality diagnosis device for the Rogowski instrument current transformer according to the present embodiment.
  • a Rogowski coil for measurement 18 is installed on the single-phase line 2, and a signal processing circuit (not shown) is connected to the Rogowski coil 18 via the cable 3.
  • the Rogowski coil 18 is installed so as to surround the outer periphery of the single-phase line 2 in a non-contact manner in order to measure the current flowing through the single-phase line 2.
  • the signal processing circuit (not shown) includes an integration circuit and the like, and outputs a current measurement value from the output of the Rogowski coil 18.
  • a Rogowski instrument current transformer is constituted by the Rogowski coil 18 and a signal processing circuit (not shown).
  • a Rogowski coil 20 for measurement is installed on the single-phase line 2, and another signal processing circuit (not shown) is connected to the Rogowski coil 20 via the cable 4.
  • the Rogowski coil 20 is installed so as to surround the outer periphery of the single-phase line 2 in a non-contact manner in order to measure the current flowing through the single-phase line 2.
  • Another signal processing circuit includes an integration circuit and the like, and outputs a current measurement value from the output of the Rogowski coil 20.
  • Another Rogowski instrument current transformer is constituted by the Rogowski coil 20 and another signal processing circuit (not shown).
  • both Rogowski coils 18 and 20 are installed on the single-phase line 2 for measurement.
  • the abnormality diagnosis device 1c is connected to the Rogowski coil 18 via the cable 3 and the cable 3a branched from the cable 3.
  • the cable 3a branches from a branch point P1 on the cable 3 and is connected to the abnormality diagnosis device 1c.
  • an abnormality diagnosis device 1c is connected via a cable 4 and a cable 4a branched from the cable 4.
  • the cable 4a branches from a branch point P4 on the cable 4 and is connected to the abnormality diagnosis device 1c.
  • the current transformation ratio of the Rogowski coil 18 and the current transformation ratio of the Rogowski coil 20 are equal. However, as described in the first embodiment, both current transformation ratios can be varied.
  • the abnormality diagnosis device 1c includes an adder 23, a ratio calculation unit 25, and a determination unit 26.
  • the adder 23 is connected to the Rogowski coil 18 via the cables 3 and 3a and to the Rogowski coil 20 via the cables 4 and 4a.
  • the ratio calculation unit 25 is connected to the Rogowski coil 18 via the cables 3 and 3a. Specifically, the ratio calculation unit 25 is connected to a further signal path branched from the signal path connecting the end of the cable 3 a and the adder 23. Note that the branch point in this case is indicated by P2.
  • the ratio calculation unit 25 is connected to the Rogowski coil 20 via the cables 4 and 4a. Specifically, the ratio calculation unit 25 is connected to another signal path branched from the signal path that connects the end of the cable 4 a and the adder 23. In this case, the branch point is indicated by P3.
  • the output S1 of the Rogowski coil 18 and the output S3 of the Rogowski coil 20 are input to the adder 23.
  • S1 to S3 are input to the ratio calculation unit 25.
  • and the ratio S5
  • the ratio calculation unit 25 outputs S4 and S5 to the determination unit 26.
  • FIG. 5 is a diagram illustrating determination information included in the determination unit according to the present embodiment.
  • the determination unit 26 performs abnormality diagnosis using the ratios S4 and S5 and the determination information of FIG. That is, when the ratios S4 and S5 are input, the determination unit 26 refers to determination information given in advance and obtains a determination result corresponding to the ratios S4 and S5.
  • the determination unit 26 determines that both the measurement-use Rogowski coil 18 and the measurement-use Rogowski coil 20 are normal.
  • the determination unit 26 determines that the measurement Rogowski coil 18 is abnormal or the cable 3 or 3a is disconnected. “ ⁇ ” is the same as in the first embodiment.
  • the determination unit 26 determines that the measurement Rogowski coil 20 is abnormal or the cable 4 or 4a is disconnected.
  • the determination unit 26 determines that the current flowing through the single-phase line 2 is 0 or the adder 23 is abnormal.
  • the output S1 of the Rogowski coil 18 and the output S3 of the Rogowski coil 20 are input to the adder 23 and the ratio calculation unit 25, respectively.
  • the adder 23 calculates the sum S2 of S1 and S3, and outputs S2 to the ratio calculation unit 25.
  • the ratio calculation unit 25 calculates the ratios S4 and S5 using S1 to S3, and outputs the ratios S4 and S5 to the determination unit 26.
  • the determination unit 26 obtains a determination result corresponding to the ratios S4 and S5 with reference to the determination information given in advance, so that two Rogowski instrument current transformers can be obtained. Diagnosis including abnormality diagnosis.
  • Other configurations and operations of the present embodiment are the same as those of the first embodiment.
  • the present embodiment it is possible to perform abnormality diagnosis of a current transformer for a Rogowski instrument using the existing Rogowski coils 18 and 20 for measurement. Therefore, it is not necessary to install a Rogowski coil for diagnosis, and the cost is reduced.
  • Other configurations, operations, and effects of the present embodiment are the same as those of the first embodiment.
  • Embodiment 3 FIG.
  • abnormality diagnosis is performed using two Rogowski coils having the same current transformation ratio.
  • the output ranges of the adder 23 and the ratio calculator 25 need to be at least twice the output range of the signal processing circuit. . Therefore, in the present embodiment, each output range of the adder 23 and the ratio calculation unit 25 is configured to be the same range as the output range of the signal processing circuit.
  • FIG. 6 is a diagram showing a configuration of an abnormality diagnosis device for a Rogowski instrument current transformer according to the present embodiment
  • FIG. 7 is a diagram showing determination information of a determination unit in the present embodiment
  • FIG. It is the figure which showed the connection aspect of the terminal of a Rogowski coil.
  • the difference between the present embodiment and the first embodiment is as follows.
  • the diagnostic Rogowski coil 19 in FIG. 1 is replaced with a diagnostic Rogowski coil 21, and the abnormality diagnosis device 1 in FIG. 1 is replaced with an abnormality diagnosis device 1 d.
  • the determination part 26 of FIG. 6 has the determination information shown in FIG.
  • the other configurations in FIG. 6 are the same as the configurations in FIG. 1, and in FIG. 6, the same components as those in FIG.
  • the current transformation ratio of the diagnostic Rogowski coil 21 is 1 ⁇ 2 of the current transformation ratio of the measurement Rogowski coil 18.
  • the current transformation ratio can be set by adjusting the turns ratio.
  • the Rogowski coil 21 is connected to the abnormality diagnosis device 1d so that the phase of the output is inverted with respect to the phase of the output of the Rogowski coil 18. Specifically, as shown in FIG. That is, in FIG. 8A, the terminals 18a and 18b of the measuring Rogowski coil 18 are connected to the cable 3 as usual without crossing, whereas in FIG. 8B, the diagnostic Rogowski coil is used. 21 terminals 21a and 21b are crossed and connected to the cable 4. By changing the wiring in this manner, the phase of the output of the Rogowski coil 21 can be reversed.
  • the circuit of the adder 23 can be simplified by configuring the output range of the adder 23 to be the same as the output range of the signal processing circuit.
  • the ratio calculation unit 25 when the ratio calculation unit 25 is configured by an analog circuit, the output range of the ratio calculation unit 25 is configured to be the same as the output range of the signal processing circuit.
  • the circuit of the ratio calculation unit 25 can be simplified. Since the circuit design is performed so that a range slightly larger than the expected original signal size can be measured, the output range of the ratio calculation unit 25 that is the same as the output range of the signal processing circuit is, for example, -1. .2 to 1.2, and in this case, “ ⁇ ” can be set to 1.2, for example. Other configurations, operations, and effects of the present embodiment are the same as those of the first embodiment.
  • the present invention is useful as an abnormality diagnosis device for a Rogowski instrument current transformer.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

La présente invention concerne une bobine de Rogowski (18), servant effectuer une mesure, et une bobine de Rogowski (19), servant effectuer un diagnostic, qui sont disposées sur une seule ligne de phase (2). La bobine de Rogowski (18) est connectée à un dispositif de diagnostic d'anomalie (1) par l'intermédiaire d'un câble (3, 3a) et la bobine de Rogowski (19) est connectée au dispositif de diagnostic d'anomalie (1) par l'intermédiaire d'un câble (4). Le dispositif de diagnostic d'anomalie (1) comprend un additionneur (23) servant à calculer la somme (S2) de la sortie (S1) de la bobine de Rogowski (18) et de la sortie (S3) de la bobine de Rogowski (19), une unité de calcul de rapport (25) utilisant S1 à S3 pour calculer le rapport S4 =|S2/S1| et le rapport S5=|S2/S3|, et une unité d'identification (26) servant à identifier une anomalie dans au moins la bobine de Rogowski (18) et le câble (3, 3a) sur la base de S4 et S5.
PCT/JP2014/056492 2014-03-12 2014-03-12 Dispositif de diagnostic d'anomalie pour transformateur de courant à instrument rogowski WO2015136641A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201480071900.3A CN105899959B (zh) 2014-03-12 2014-03-12 罗氏仪器用电流互感器的异常诊断装置
PCT/JP2014/056492 WO2015136641A1 (fr) 2014-03-12 2014-03-12 Dispositif de diagnostic d'anomalie pour transformateur de courant à instrument rogowski
JP2014536050A JP5638729B1 (ja) 2014-03-12 2014-03-12 ロゴスキー計器用変流器の異常診断装置

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