A fully automatic wiring device and verification method for high-voltage current transformers in multi-channel distribution networks

Abstract

The present application relates to a fully automatic wiring device and a calibration method for multi-channel distribution network high-voltage current transformer calibration. The data acquisition control device realizes the fully automatic wiring of multi-channel test equipment and the calibration of high-voltage current transformers through a primary switching device, a secondary switching device, a primary crimping device, a secondary crimping device, a primary wiring lifting device, a secondary wiring lifting device, a secondary operating mechanical arm, a camera positioning system, and a motor device. The present invention improves the work efficiency of the calibration, reduces the labor intensity of the staff, and ensures the reliability of the calibration data and the safety of the calibration process. The automation level of the calibration work of the high-voltage current transformer is substantially improved. It can be directly matched with the existing transformer calibration devices of each calibration center. It is convenient to establish a standardized, process-oriented, and modern calibration center, so that the working environment of the calibration center is improved.

Description

Technical Field

[0001] The present application relates to the field of high-voltage current transformer detection, and in particular to a fully automatic wiring device and a verification method for high-voltage current transformers in a multi-channel distribution network. Background Art

[0002] With the rapid development of my country's power industry, the transformation and upgrading of urban and rural power grids, and the full coverage of data acquisition systems, the demand for distribution network high-voltage current transformers by transformer measurement and verification departments, especially provincial and municipal transformer measurement and verification departments, is very large and increasing year by year, which puts forward new requirements for the verification efficiency of high-voltage current transformers. At present, affected by the existing verification equipment, high-voltage current transformers are mainly tested by one-by-one verification method, that is, through manual or automatic voltage control and regulation devices, according to the regulations or manually set multiple test points, one by one, this method is time-consuming and inefficient, and each time a wire is completed, it needs to be rewired, and there are certain safety risks in each wiring. The detection time of a single high-voltage current transformer is as high as 15-20 minutes, and during the peak period of verification, the number of daily verifications reaches more than 300, and a single manual verification device cannot complete the task. However, there is a shortage of existing verification personnel, so it is extremely urgent, necessary and technically feasible to realize the automatic verification of multiple high-voltage current transformers through one-time wiring. Summary of the invention

[0003] The purpose of the embodiment of the present application is to provide a fully automatic wiring device and a verification method for multi-channel distribution network high-voltage current transformer verification, and to deepen the construction of intelligent metering system by using information and intelligent means, improve the level of metering automation and intelligence, transform the existing high-voltage current transformer verification method, and connect multiple high-voltage current transformers at one time. During the entire wiring process, the user does not need to touch any possible live parts, avoiding high voltage danger and improving efficiency.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a fully automatic wiring device for calibrating a high-voltage current transformer in a multi-channel distribution network, characterized in that it includes a data acquisition control device, a primary switching device, a secondary switching device, a primary crimping device, a secondary crimping device, a primary wiring lifting device, a secondary wiring lifting device, a secondary operating mechanical arm, a camera positioning system, and a motor device.

[0006] The data acquisition control device is connected to the primary switching device via a copper bus and a high-current switch combination module;

[0007] The data acquisition control device is connected to the secondary switching device via a control circuit;

[0008] The primary switching device is connected to the standard equipment through the primary wiring lifting device and the primary crimping device to switch the primary and secondary transformation ratio of the standard equipment, so that the standard wiring does not need to be changed later;

[0009] The secondary switching device is connected to the device under test via a secondary wiring lifting device and a secondary crimping device;

[0010] The secondary operation mechanical arm, the camera positioning system and the data acquisition control device are connected to complete the identification of the tested equipment;

[0011] The motor device receives the signal given by the data acquisition control device to control the lifting and lowering of the primary wiring lifting device and the secondary wiring lifting device.

[0012] In the above scheme, the data acquisition control device includes a transformer monitoring module, a power supply module, a CPU mainboard, a PLC module, and an electrical isolation device.

[0013] The transformer monitoring module is connected to the primary switching device and the secondary switching device and is connected to the CPU mainboard, and is used to switch the transformation ratio of the tested device and the standard device according to the control instructions of the CPU mainboard;

[0014] The PLC module is connected to the CPU mainboard, the motor device is connected to the PLC module, and the PLC module controls the motor device to move according to the control instructions of the CPU mainboard;

[0015] The power supply module is connected to the CPU mainboard, the PLC module, the primary switching device, the secondary switching device, and the motor device to supply power to them;

[0016] The electrical isolation device is installed in the transformer monitoring module to monitor the working current and working voltage of the standard equipment and the tested equipment in real time, and to electrically isolate the CPU mainboard, the standard equipment and the tested equipment.

[0017] Optionally, the primary crimping device includes a primary crimping head, a spacing adjustment mechanism, a laser automatic positioning device and a primary circuit station diagnostic device.

[0018] The primary crimping head and the spacing adjustment mechanism are connected to a primary wiring lifting device, which moves downward, driving the primary crimping head and the spacing adjustment mechanism to move downward, and the primary crimping head is connected to a laser automatic positioning device, which automatically positions the primary crimping head, and the primary crimping head presses the primary terminal of the test equipment. A primary circuit station diagnostic device arranged on the primary crimping device automatically determines the wiring condition and automatically feeds back the diagnostic result to the data acquisition control device.

[0019] The secondary operation robot arm receives the control signal of the data acquisition control device to complete the secondary winding connection of the test equipment. The secondary operation robot arm is also provided with an automatic nameplate recognition device. The automatic nameplate recognition device recognizes the nameplate information of the test equipment and feeds it back to the camera positioning system connected to the secondary operation robot arm. The camera positioning system screens, saves, backs up and recognizes the feedback information.

[0020] The test equipment is placed in parallel on an assembly vehicle, and the data acquisition control device realizes full-automatic wiring of multiple test equipment through a primary switching device, a secondary switching device, a primary crimping device, a secondary crimping device, a primary wiring lifting device, a secondary wiring lifting device, a secondary operating mechanical arm, a camera positioning system and a motor device.

[0021] A method for calibrating a fully automatic wiring device for calibrating a multi-channel distribution network high-voltage current transformer comprises the following specific steps:

[0022] In each batch of automatic calibration, the primary circuits of multiple high-voltage current transformers to be tested need to be connected in series. The data acquisition control device controls the primary switching device to connect the first device under test for testing. The primary wiring lifting device is pressed down to drive the primary crimping device to contact the primary copper busbar of the transformer. The crimping quality is ensured by the spacing adjustment mechanism and the laser automatic positioning device.

[0023] At the same time, the secondary circuits of multiple high-voltage current transformers will be connected. The data acquisition control device controls the secondary switching device to connect the first device under test to the secondary circuit for testing, so that in each test, only one high-voltage current transformer secondary circuit to be tested is connected to the test circuit.

[0024] The data acquisition control device controls the current booster to boost the current to the specified current, and the transformer monitoring module performs sampling and monitoring on the first device under test;

[0025] After the data acquisition control device completes sampling of the first device under test, the switching device switches to the next device under test for sampling, and so on until sampling of all devices under test is completed, thereby completing the calibration of multiple devices under test.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Improve the production efficiency of the calibration center and increase the daily calibration volume from the current dozens to hundreds.

[0028] 2. The automation level of the verification work of high-voltage current transformers has been substantially improved, the labor intensity of the staff has been reduced, the wiring has been made simple and reliable, the work efficiency has been improved, and the production safety has been ensured.

[0029] 3. A fully automatic wiring device for the calibration of high-voltage current transformers in multi-channel distribution networks with intelligent diagnostic functions. It has an adaptive control function and can automatically determine the wiring conditions, polarity, transformation ratio and impedance in the circuit by extracting characteristic values, making the high-voltage current equipment test more intelligent.

[0030] 4. It can be directly matched with the existing transformer calibration devices of various calibration centers.

[0031] 5. It is convenient to establish a standardized, process-oriented and modernized calibration center, so as to improve the working environment of the calibration center. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a structural schematic diagram of a fully automatic wiring device for calibrating high-voltage current transformers in a multi-channel distribution network according to the present invention;

[0034] Figure 2 This is a structural schematic diagram of the data acquisition control device of the present invention;

[0035] Figure 3 It is a structural schematic diagram of a one-time crimping device of the present invention;

[0036] Figure 4 This is a primary circuit switching principle diagram of the present invention;

[0037] Figure 5 It is a schematic diagram of the secondary loop control structure of the present invention;

[0038] Figure 6 It is a flow chart of the detection method of the present invention;

[0039] The numbers in the figure respectively represent: 1-data acquisition control device, 2-primary switching device, 3-secondary switching device, 4-primary crimping device, 5-secondary crimping device, 6-primary wiring lifting device, 7-secondary wiring lifting device, 8-secondary operation robot arm, 9-camera positioning system, 10-motor device. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0041] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0042] The terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and should not be understood as indicating or implying relative importance, nor should they be understood as requiring or implying any such actual relationship or order between these entities or operations.

[0043] like Figure 1-Figure 6 As shown, in view of the deficiencies in the prior art, the embodiments of the present application provide a fully automatic wiring device and a calibration method for high-voltage current transformers in a multi-channel distribution network.

[0044] Please refer to Figure 1 , Figure 1 A multi-channel distribution network high-voltage current transformer calibration fully automatic wiring device provided in the embodiment of the present application includes a data acquisition control device 1, a primary switching device 2, a secondary switching device 3, a primary crimping device 4, a secondary crimping device 5, a primary wiring lifting device 6, a secondary wiring lifting device 7, a secondary operating mechanical arm 8, a camera positioning system 9 and a motor device 10.

[0045] The data acquisition control device 1 is connected to the primary switching device 2 via a copper bus 100 and a high-current switch combination module 101;

[0046] The data acquisition control device 1 is connected to the secondary switching device 3 via a control circuit 102;

[0047] The primary switching device 2 is connected to the standard equipment through the primary wiring lifting device 6 and the primary crimping device 4 to switch the primary and secondary transformation ratio of the standard equipment, so that the standard wiring does not need to be changed later;

[0048] The secondary switching device 3 is connected to the device under test via a secondary wiring lifting device 7 and a secondary crimping device 5;

[0049] The secondary operation mechanical arm 8 and the camera positioning system 9 are connected to the data acquisition control device 1 to complete the identification of the tested device;

[0050] The motor device 10 receives the signal given by the data acquisition control device 1 to control the lifting and lowering of the primary wiring lifting device 6 and the secondary wiring lifting device 7 .

[0051] Please refer to Figure 2 , Figure 2 This is a schematic diagram of a data acquisition control device 1 according to an embodiment of the present application. The data acquisition control device 1 includes a transformer monitoring module, a power module, a CPU mainboard, a PLC module, and an electrical isolation device.

[0052] The transformer monitoring module is connected to the primary switching device 2 and the secondary switching device 3 and is connected to the CPU mainboard, so as to switch the transformation ratio of the tested device and the standard device according to the control instructions of the CPU mainboard;

[0053] The PLC module is connected to the CPU mainboard, the motor device 10 is connected to the PLC module, and the PLC module controls the motor device 10 to move according to the control instructions of the CPU mainboard;

[0054] The power supply module is connected to the CPU mainboard, the PLC module, the primary switching device 2, the secondary switching device 3, and the motor device 10 to supply power thereto;

[0055] The electrical isolation device is installed in the transformer monitoring module to monitor the working current and working voltage of the standard equipment and the tested equipment in real time, and to electrically isolate the CPU mainboard, the standard equipment and the tested equipment.

[0056] Please refer to Figure 3 , Figure 3 Schematic diagram of a primary crimping device 4 according to an embodiment of the present application, the primary crimping device 4 comprises a primary crimping head 41, a spacing adjustment mechanism 42, a laser automatic positioning device 43 and a primary circuit station diagnosis device 44.

[0057] The primary crimping joint 41 and the spacing adjustment mechanism 42 are connected to the primary wiring lifting device 6, and the primary wiring lifting device 6 moves downward, driving the primary crimping joint 41 and the spacing adjustment mechanism 42 to move downward. The primary crimping joint 41 is connected to the laser automatic positioning device 43, and the laser automatic positioning device 43 automatically positions the primary crimping joint 41. The primary crimping joint 41 presses the primary terminal of the test equipment. The primary circuit station diagnostic device 44 arranged on the primary crimping device 4 automatically determines the wiring condition, polarity, transformation ratio and impedance condition in the circuit by extracting characteristic values, and automatically feeds back the diagnostic results to the data acquisition control device 1, so that the operator can directly view them.

[0058] The secondary operation robot arm 8 receives the control signal from the data acquisition control device 1 to complete the secondary winding connection of the test equipment. The secondary operation robot arm 8 is also provided with an automatic nameplate recognition device. The automatic nameplate recognition device recognizes the nameplate information of the test equipment and feeds it back to the camera positioning system 9 connected to the secondary operation robot arm 8. The camera positioning system 9 screens, saves, backs up and recognizes the feedback information.

[0059] The test equipment is placed in parallel on the assembly vehicle, and the data acquisition control device 1 realizes full-automatic wiring of multiple test equipment through the primary switching device 2, the secondary switching device 3, the primary crimping device 4, the secondary crimping device 5, the primary wiring lifting device 6, the secondary wiring lifting device 7, the secondary operation mechanical arm 8, the camera positioning system 9 and the motor device 10, and can realize adaptive control according to the primary crimping device 4, the secondary operation mechanical arm 8 and the camera positioning system 9.

[0060] During the test, multiple test devices are placed in parallel on the assembly vehicle and pushed into the test area. The data acquisition control device 1 is connected to the primary switching device 2 through the copper bus 100 and the high-current switch combination module 101, and is connected to the secondary switching device 2 through the control circuit 102; the electric device 10 gives a signal through the data acquisition control device 1 to control the lifting and lowering of the primary wiring lifting device 6 and the secondary wiring lifting device 7. When the primary wiring lifting device 6 descends, it drives the primary crimping head 41 in the primary crimping device 4, and the spacing adjustment mechanism 42 moves downward. When multiple test devices are pressed to a certain force, the laser automatic positioning device 43 automatically positions the primary crimping head 41, and can simultaneously press the primary terminals of multiple test devices. When the primary crimping device 4 presses multiple devices under test, the secondary wiring lifting device 7 stops, and the data acquisition control device sends a signal to the secondary operating mechanical arm 8 to move. The data acquisition control device 1 controls the secondary operating mechanical arm 8 to move according to the existing records of the camera positioning system 9, and automatically connects the wires. At the same time, the secondary operating mechanical arm 8 will automatically identify the nameplate of the device under test, and the device will feed back the identified information to the camera positioning system 9, which will filter, save, back up, and identify the feedback information. After completing the wiring of the secondary winding of the device under test, the data acquisition control device controls the primary and secondary switching devices, and performs secondary wiring and primary circuit inspection through the primary circuit station diagnostic device. After the inspection is completed, the wiring is completed and the error test can be carried out.

[0061] Please refer to Figure 4-5 , Figure 4 and Figure 5They are respectively the primary circuit control and secondary circuit control principle diagrams of the current auxiliary test bench of the 12th station of the embodiment of the present application. The data acquisition control device 1 controls the switch combination module to switch the primary winding of the high-voltage current transformer under test, as shown in B1 to B12 in the figure. The data acquisition control device gives a switching signal to the control circuit 102 to switch the secondary winding of the high-voltage current transformer under test, as shown in K1 to K12 in the figure. After the one-time wiring is completed, a maximum of 12 high-voltage current transformers can be measured at the same time; if different models and different ratios are used, the arrangement rules of the stations CT1 to CT12 are required to be arranged in order from large ratio to small ratio, which can meet the measurement of a maximum of 12 transformers with completely different models and ratios or any 2, 4, 6 or other transformers with different ratios.

[0062] Place the transformer under the table, connect the primary high-current wires CT1 to CT10 to the transformer under test in sequence, and the secondary wiring is the same. During measurement, the primary circuit switch K1B10 is automatically closed, and 10 transformers are connected in series to form a primary closed circuit. After the current is increased according to the regulations, the secondary sampling circuit switch samples in sequence from CT1 to CT10. After all the regulations are completed, the measurement is completed.

[0063] Please refer to Figure 6 , Figure 6 This is a flow chart of the verification method of the embodiment of the present application. The specific steps of the verification method are:

[0064] In each batch of automatic calibration, the primary circuits of multiple high-voltage current transformers to be tested need to be connected in series. The data acquisition control device controls the primary switching device to connect the first device under test for testing. The primary wiring lifting device is pressed down to drive the primary crimping device to contact the primary copper busbar of the transformer. The crimping quality is ensured by the spacing adjustment mechanism and the laser automatic positioning device.

[0065] At the same time, the secondary circuits of multiple high-voltage current transformers will be connected. The data acquisition control device controls the secondary switching device to connect the first device under test to the secondary circuit for testing, so that in each test, only one high-voltage current transformer secondary circuit to be tested is connected to the test circuit.

[0066] The data acquisition control device controls the current booster to boost the current to the specified current, and the transformer monitoring module performs sampling and monitoring on the first device under test;

[0067] After the data acquisition control device completes sampling of the first device under test, the switching device switches to the next device under test for sampling, and so on until sampling of all devices under test is completed, thereby completing error testing of multiple devices under test.

[0068] In the specific steps, there will be contact resistance at the metal contact surface during the crimping process. The secondary wiring contact resistance will increase the secondary side impedance of the current transformer, resulting in an increase in the transformer verification error. To this end, it is necessary to study the mathematical model of the secondary side wiring contact resistance and verification error.

[0069] First, we analyze the influence of the crimping resistance of the secondary side of the current transformer on the verification results of the current transformer. The number of turns of the primary coil of the current transformer being tested is N1, and the current is I1; the number of turns of the secondary coil is N2, and the induced current is I2; when the crimping contact resistance is zero, the secondary load is represented by Z2; without loss of generality, the secondary side crimping contact resistance is represented by impedance parameters, expressed as ΔZ; the inner diameter of the current transformer core is r1, the outer diameter is r2, and the height is h. According to Ampere's loop theorem, we can get

[0070] 2πrH=N 1 I 1 -N 2 I 2 (1)

[0071] Among them, H is the magnetic field strength in the iron core; r = (r1 + r2) / 2 is the average radius of the iron core.

[0072] The current transformer core is made of high permeability magnetic material (such as ultrafine crystal). In the linear region, its magnetic induction intensity B is a linear function of the magnetic field intensity H, and the magnetic permeability μ satisfies

[0073]

[0074] Based on the law of electromagnetic induction and Ohm's law, the equation of the secondary circuit of the current transformer can be expressed as

[0075]

[0076] Where S = (r2-r1)h is the cross-sectional area of ​​the core. Based on equation (2), dB / dt in equation (3) can also be written as

[0077]

[0078] By taking the derivative of (1), we can get

[0079]

[0080] By using the phasor method and combining equations (3) to (5), we can obtain the ratio of the primary coil current to the secondary coil current, which is:

[0081]

[0082] According to the above formula, when considering the secondary side load and line resistance, the error caused by the current transformer complex ratio measurement is:

[0083]

[0084] The loss angle of the current transformer core is θ, and the total impedance angle of the secondary side (including Z2 and ΔZ) is φ. Equation (7) can be expressed in the form of ratio difference and angle difference, that is,

[0085]

[0086]

[0087] Equations (8) and (9) clearly define the mathematical and physical relationship between the current transformer secondary side wiring crimping contact resistance and the transformer verification results (ratio difference f, angle difference δ). It is not difficult to see that the changes in the current transformer verification ratio difference f and angle difference δ caused by the secondary side wiring crimping resistance are linearly related to the crimping contact resistance value, and the proportionality coefficient is related to the transformer's core material properties, secondary impedance, secondary side coil turns, core shape parameters, etc.

[0088] The present invention discloses a fully automatic wiring device and a method for calibrating a multi-channel distribution network high-voltage current transformer. By using information and intelligent means, the construction of an intelligent metering system is deepened, the level of metering automation and intelligence is improved, and the existing high-voltage current transformer calibration method is changed. Multiple high-voltage current transformers can be wired at one time. During the entire wiring process, the user does not need to touch any potentially live parts, thus avoiding high voltage dangers and improving efficiency.

[0089] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for calibrating a fully automatic wiring device for calibrating a multi-channel distribution network high-voltage current transformer, characterized in that: The specific steps include: In each batch of verification of the fully automatic wiring device for transformer verification, the primary circuits of multiple high-voltage current transformers to be tested are connected in series. The data acquisition control device controls the primary switching device to connect the first tested device for the test. The primary wiring lifting device is pressed down to drive the primary crimping device to contact the primary copper busbar of the transformer for testing. The spacing adjustment mechanism and the laser automatic positioning device are used to ensure the crimping quality. At the same time, the secondary circuits of multiple high-voltage current transformers are connected, and the data acquisition control device controls the secondary switching device to connect the second circuit of the first device under test for testing, so that in each test, only one secondary circuit of the high-voltage current transformer to be tested is connected to the test circuit. The data acquisition control device controls the current booster to boost the current to the specified current, and the transformer monitoring module performs sampling and monitoring on the first device under test; After the data acquisition control device completes sampling of the first device under test, the switching device switches to the next device under test for sampling, and so on until all devices under test have completed sampling, thereby completing the calibration of multiple devices under test; During the crimping process, there will be contact resistance at the metal contact surface. The secondary wiring contact resistance will increase the secondary impedance of the current transformer, resulting in an increase in the transformer verification error. To address this, it is necessary to study the mathematical model of the secondary wiring contact resistance and verification error. First, the influence of the crimping resistance of the secondary side of the current transformer on the verification result of the current transformer is analyzed. The number of turns of the primary coil of the current transformer being tested is N1, and the current is I1; the number of turns of the secondary coil is N2, and the induced current is I2; when the crimping contact resistance is zero, the secondary load is represented by Z2; without loss of generality, the secondary side crimping contact resistance is represented by impedance parameters, expressed as ΔZ; the inner diameter of the current transformer core is r1, the outer diameter is r2, and the height is h. According to Ampere's loop theorem, it can be obtained 2πrH=N1I1-N2I2 (1) Where H is the magnetic field strength in the core; r = (r1 + r2) / 2 is the average radius of the core, The current transformer core is made of high permeability magnetic material. In the linear region, its magnetic induction intensity B is a linear function of the magnetic field intensity H, and the magnetic permeability μ satisfies Based on the law of electromagnetic induction and Ohm's law, the equation of the secondary circuit of the current transformer can be expressed as Where S = (r2-r1)h is the cross-sectional area of ​​the core. Based on equation (2), dB / dt in equation (3) can also be written as By taking the derivative of (1), we can get By using the phasor method and combining equations (3) to (5), we can obtain the ratio of the primary coil current to the secondary coil current, which is: According to the above formula, when considering the secondary side load and line resistance, the error caused by the current transformer complex ratio measurement is: The loss angle of the current transformer core is θ, and the total impedance angle of the secondary side is φ. Equation (7) can be expressed in the form of ratio difference and angle difference, that is, Equations (8) and (9) clearly define the mathematical and physical relationship between the crimping contact resistance of the secondary side wiring of the current transformer and the ratio difference f and angle difference δ of the transformer verification results.

2. A fully automatic wiring device for calibrating high-voltage current transformers in a multi-channel distribution network, used to implement the method described in claim 1, characterized in that: It comprises a data acquisition control device (1), a primary switching device (2), a secondary switching device (3), a primary crimping device (4), a secondary crimping device (5), a primary wiring lifting device (6), a secondary wiring lifting device (7), a secondary operation mechanical arm (8), a camera positioning system (9) and a motor device (10). The data acquisition control device (1) is connected to the primary switching device (2) via a copper bus (100) and a high-current switch combination module (101); The data acquisition control device (1) is connected to the secondary switching device (3) via a control circuit (102); The primary switching device (2) is connected to the standard equipment through the primary wiring lifting device (6) and the primary crimping device (4) to switch the primary and secondary transformation ratio of the standard equipment, so that the standard wiring does not need to be changed later; The secondary switching device (3) is connected to the device under test via a secondary wiring lifting device (7) and a secondary crimping device (5); The secondary operation mechanical arm (8) and the camera positioning system (9) are connected to the data acquisition control device (1) to complete the identification of the tested device; The motor device (10) receives a signal given by the data acquisition control device (1) to control the lifting and lowering of the primary wiring lifting device (6) and the secondary wiring lifting device (7); The primary crimping device (4) comprises a primary crimping connection head (41), a spacing adjustment mechanism (42), a laser automatic positioning device (43) and a primary circuit station diagnosis device (44). The primary crimping head (41) and the spacing adjustment mechanism (42) are connected to a primary wiring lifting device (6); the primary wiring lifting device (6) moves downward, driving the primary crimping head (41) and the spacing adjustment mechanism (42) to move downward; the primary crimping head (41) is connected to a laser automatic positioning device (43); the laser automatic positioning device (43) automatically positions the primary crimping head (41); the primary crimping head (41) presses the primary terminal of the device under test; and a primary circuit position diagnosis device (44) provided on the primary crimping device (4) automatically determines the wiring condition and automatically feeds back the diagnosis result to the data acquisition control device (1).

3. A fully automatic wiring device for calibrating high-voltage current transformers in multi-channel distribution networks according to claim 2, characterized in that: The data acquisition control device (1) comprises a mutual inductor monitoring module, a power supply module, a CPU mainboard, a PLC module, and an electrical isolation device. The transformer monitoring module is connected to the primary switching device (2) and the secondary switching device (3) and is connected to the CPU mainboard, and is used to switch the transformation ratio of the tested device and the standard device according to the control instructions of the CPU mainboard; The PLC module is connected to the CPU mainboard, the motor device (10) is connected to the PLC module, and the PLC module controls the motor device (10) to move according to the control instructions of the CPU mainboard; The power supply module is connected to the CPU mainboard, the PLC module, the primary switching device (2), the secondary switching device (3), and the motor device (10) to supply power to them; The electrical isolation device is installed in the transformer monitoring module to monitor the working current and working voltage of the standard equipment and the tested equipment in real time, and to electrically isolate the CPU mainboard, the standard equipment and the tested equipment.

4. A fully automatic wiring device for calibrating high-voltage current transformers in multi-channel distribution networks according to claim 2, characterized in that: The secondary operation robot arm (8) receives a control signal from the data acquisition control device (1) to complete the secondary winding connection of the device under test. The secondary operation robot arm (8) is also provided with an automatic nameplate recognition device. The automatic nameplate recognition device recognizes the nameplate information of the device under test and feeds it back to a camera positioning system (9) connected to the secondary operation robot arm (8). The camera positioning system (9) screens, saves, backs up and recognizes the fed-back information.

5. A fully automatic wiring device for calibrating high-voltage current transformers in multi-channel distribution networks according to claim 2, characterized in that: The test equipment is placed in parallel on an assembly vehicle, and the data acquisition control device (1) realizes full-automatic wiring of multiple test equipment by controlling a primary switching device (2), a secondary switching device (3), a primary crimping device (4), a secondary crimping device (5), a primary wiring lifting device (6), a secondary wiring lifting device (7), a secondary operating mechanical arm (8), a camera positioning system (9), and a motor device (10).

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