Complete equipment for additional test of control loop

Abstract

The utility model belongs to the technical field of control loop testing, and discloses a control loop additional test complete device, which is characterized in that an engineering machine is linearly connected with a programmable power pack and an on-off module through an RS232, is linearly connected with a digital IO card and a temperature and humidity sensor through a USB, and is linearly connected with an NI acquisition card and a first control relay through the RS232; the NI acquisition card is linearly connected with the first voltage sensor group and the first current sensor group; the on-off module and the short-time power supply are connected with the first voltage sensor group and the first current sensor group; the digital IO card is linearly connected with the power supply module which is linearly connected with the second control relay, the second voltage sensor group and the second current sensor group. The system interface is friendly, and testing is carried out strictly according to the usability principle. In order to avoid repeated operation of a user, the system is embedded with an intelligent memory function, such as automatic configuration saving. And the same information cannot be input at multiple places or multiple times in the system by the user, so that the uniqueness of the entrance is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of control loop testing, and particularly relates to a complete set of auxiliary and control loop additional test devices, including a function test for verifying the correctness of the functions of the auxiliary and control loops, a test for verifying the grounding continuity of the grounded metal components, a test for verifying that the auxiliary contacts carry continuous rated current, carry rated short-time withstand current and breaking capacity, an insulation verification test, etc., which can be applicable to the overall solution of the relevant tests for the auxiliary and control loops of high-voltage switchgear. Background Technique

[0002] At present, a high-voltage switch refers to an electrical appliance mainly used for opening and closing a conductive loop with a rated voltage of 3 kV or above. High-voltage switches include high-voltage circuit breakers, high-voltage disconnectors, high-voltage earthing switches, high-voltage fast earthing switches, etc. Among them, the high-voltage circuit breaker plays two roles in the power system: one is the control function, that is, according to the operation needs of the power system, some power equipment or lines are put into or taken out of operation; the other is the protection function, that is, when a fault occurs in the power equipment or line, the circuit breaker acts through the relay protection device to quickly cut off the faulty part from the power system to ensure the normal operation of the non-faulty part of the power system; the high-voltage disconnector is mainly used to isolate the high-voltage power supply to ensure safe maintenance; the high-voltage earthing switch and the high-voltage fast earthing switch can be used for earthing during the maintenance of high-voltage electrical equipment.

[0003] At present, users need to complete various additional tests for the auxiliary and control loops of high-voltage switches, such as the acquisition of opening test current and voltage, the acquisition of short-time withstand test current, the acquisition of grounding continuity test current and voltage, etc. At the same time, users need to automatically measure various test data of high-voltage switches and generate test records for convenient subsequent viewing and analysis. Our company has developed a complete set of auxiliary and control loop additional test devices for this test. This device is mainly applicable to the relevant tests for the auxiliary and control loops of high-voltage switchgear, and completes the tasks of measuring the resistance of auxiliary contacts, grounding continuity, rated continuous current of auxiliary contacts, rated short-time withstand current of auxiliary contacts, and acquisition of test data on the breaking capacity of auxiliary contacts.

[0004] However, the existing detection methods are mainly manual detection. Due to the manual recording of test data, the test data is not accurately recorded, and it is easy to make mistakes or omissions; and when manual detection encounters a failure of the instrument in the experiment, the troubleshooting work is time-consuming and laborious, and it is easy to have an incomplete troubleshooting situation; most importantly, due to the danger of high voltage and low voltage, manual detection cannot complete difficult operations.

[0005] Through the above analysis, the problems and defects existing in the prior art are as follows:

[0006] Manual detection of the auxiliary and control circuits of high-voltage switches is likely to lead to incorrect test data, with high detection difficulty and high risk, etc. Summary of the Utility Model

[0007] In view of the problems existing in the prior art, the present utility model provides a complete set of additional test devices for control circuits. The device can complete measurements of relevant tests such as auxiliary contact resistance measurement, grounding continuity, rated continuous current of auxiliary contacts, rated short-time withstand current of auxiliary contacts, breaking capacity of auxiliary contacts, etc. It can set parameters involved in the test process, support one-key measurement for each test, and can save measurement data and export test reports, etc.

[0008] The present utility model is implemented as follows. A complete set of additional test devices for control circuits is provided with:

[0009] Engineering machine;

[0010] The engineering machine is linearly connected to a programmable power supply group and a breaking module (Nami01) through RS232. The engineering machine (Qirui) is linearly connected to a digital IO card (USB5540) and a temperature and humidity sensor (TH-11S (RS232)) through USB. The engineering machine is linearly connected to an NI acquisition card (NI9215) and a first control relay through RS232. The NI acquisition card is linearly connected to a first voltage sensor group and a first current sensor group;

[0011] The breaking module and the short-time power supply are connected to the first voltage sensor group and the first current sensor group;

[0012] The digital IO card is linearly connected to a power supply module. The power supply module is linearly connected to a second control relay, a second voltage sensor group, and a second current sensor group.

[0013] Further, the programmable power supply group is provided with a total of three programmable power supplies (RU-M36-30012D), which are the first programmable power supply (RU-M36-30012D), the second programmable power supply (RU-M36-30012D), and the third programmable power supply (RU-M36-30012D) from left to right.

[0014] Further, the programmable power supply group is linearly connected to the breaking module. The breaking module is linearly connected to a voltage sensor through a linear connection. The short-time current is linearly connected to a current sensor.

[0015] Further, the first voltage sensor group is provided with a first voltage sensor (CHV-300VD) and a second voltage sensor (CHV-30VD); the first current sensor group is provided with a first current sensor (CHB-05AD), a second current sensor (CHB-5AD), a third current sensor (CHB-30A / 5V), and a fourth current sensor (CHB-100A / 5V).

[0016] Further, the second voltage sensor group is provided with a third voltage sensor and a fourth voltage sensor, and the second current sensor group is provided with a fifth current sensor, a sixth current sensor, a seventh current sensor, and an eighth current sensor.

[0017] Further, the opening and closing module is linearly connected to the IN+ interface of the first voltage sensor, the opening and closing module is connected to the IN+ interfaces of the third current sensor and the fourth current sensor, the short-term power supply is linearly connected to the IN+ interface of the second voltage sensor, and the short-term power supply is linearly connected to the first current sensor and the second current sensor.

[0018] Further, the M interfaces of the first voltage sensor group and the first current sensor group are linearly connected to the first control relay, and the AI interface and the COM interface of the NI acquisition card are linearly connected to the T interfaces of the first voltage sensor group, the first current sensor group, and the first power supply module.

[0019] Further, the +5v pin of the power supply module is connected to the 5v pin of the second control relay, the +2v' pin of the second control relay is connected to the +5v pins of the second voltage sensor group and the second current sensor group, and the 3v pin of the power supply module is linearly connected to the -15v pins of the second voltage sensor group and the second current sensor group.

[0020] Further, the models of the first voltage sensor group and the second voltage sensor group are CHV-300VD, the models of the first current sensor, the second current sensor, the fifth current sensor, and the sixth current sensor are CHB-100A / 5V, and the models of the third current sensor, the fourth current sensor, the seventh current sensor, and the eighth current sensor are CHB-5AD.

[0021] Combined with the above technical solutions and the solved technical problems, the advantages and positive effects of the technical solution to be protected by the present utility model are analyzed from the following aspects:

[0022] In the embodiment of the present utility model, the engineering machine is linearly connected to a programmable power supply group (RU-M36-30012D) and a switching module (Nami01) through RS232. The engineering machine is linearly connected to a digital IO card (Altai USB5540) and a temperature and humidity sensor (TH-11S (RS232)) through USB. The engineering machine (Qirui) is connected to an NI acquisition card (NI9215) and a first control relay. The NI acquisition card is connected to a first voltage sensor group and a first current sensor group. The switching module and the short-time power supply are connected to the first voltage sensor group and the first current sensor group. The digital IO card is linearly connected to a power supply module, and the power supply module is linearly connected to a second control relay, a second voltage sensor group and a second current sensor group, having the following effects:

[0023] 1. The software can replace manual testing. The testing method is more efficient, the testing is more accurate, it saves human resources, and reduces the situation of misrecording or missing recording;

[0024] 2. The software can automatically save the acquired waveform in TDMS format to a specified folder path, import the TDMS file, and playback the waveform;

[0025] 3. Editable parameter entry, and the acquisition rate and sampling channels can be specified by oneself;

[0026] 4. The system has easy maintainability. When a failure occurs, it can be quickly and comprehensively checked to find the cause and resume operation in the shortest time, reducing losses;

[0027] 5. The system operation has safety. The faults occurring in the operation process can be safely diagnosed to avoid the manual operation risks brought by high voltage and low voltage.

[0028] 6. The usability of the system: The system interface is friendly and is tested strictly in accordance with the usability principle. To avoid repeated operations by users, the system embeds an intelligent memory function, such as automatically saving configurations. And the same information will not let users enter it multiple times or in multiple places in the system, ensuring the uniqueness of the entry. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of a control loop additional test complete set device provided by the embodiment of the present utility model;

[0030] Figure 2 is a flow block diagram provided by the embodiment of the present utility model;

[0031] Figure 3 is a schematic diagram of automatic acquisition of current and voltage for the high-voltage switch open-ground continuity test provided by the second embodiment of the present utility model;

[0032] Figure 4It is a schematic diagram of the automatic acquisition of the short-time withstand current of the high-voltage switch provided in the fourth embodiment of the present utility model;

[0033] Figure 5 It is a schematic diagram of the automatic acquisition of the current and voltage of the high-voltage switch during the opening test provided in the fifth embodiment of the present utility model;

[0034] Figure 6 It is a schematic diagram of the operation interface provided in the embodiment of the present utility model;

[0035] In the figure: 1. Engineering machine (Qirui); 2. Temperature and humidity sensor (TH-11S); 3. Short-time power supply (Nami02); 4. Third programmable power supply (RU-M36-30012D); 5. Second programmable power supply (RU-M36-30012D); 6. First programmable power supply (RU-M36-30012D); 7. Digital IO card (Altai USB5540); 8. Opening module (Nami01); 9. First voltage sensor (CHV-300VD); 10. Second voltage sensor (CHV-30VD); 11. First current sensor (CHB-05AD); 12. Second current sensor (CHB-5AD); 13. Third current sensor (CHB-30A / 5V); 14. Fourth current sensor (CHB-100A / 5V); 15. NI acquisition card (NI9215); 16. First control relay (LH-08 customized LH-08 module); 17. First power module; 18. Second power module; 19. Third voltage sensor; 20. Fourth power sensor; 21. Fifth current sensor; 22. Sixth current sensor; 23. Seventh current sensor; 24. Eighth current sensor; 25. Second control relay. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] The engineering machine 1 is linearly connected to the programmable power supply group and the opening module 8 through RS232, the engineering machine 1 is linearly connected to the digital IO card 7 and the temperature and humidity sensor 2 through USB, the engineering machine 1 is linearly connected to the NI acquisition card 15 and the first control relay 16 through RS232, and the NI acquisition card 15 is linearly connected to the first voltage sensor 9 group and the first current sensor 11 group;

[0038] The opening module 8 and the short-time power supply 3 are connected to the first voltage sensor 9 group and the first current sensor 11 group;

[0039] The digital IO card 7 is linearly connected to the power supply module, and the power supply module is linearly connected to the second control relay 25, 10 groups of second voltage sensors, and 12 groups of second current sensors.

[0040] The programmable power supply group is provided with three programmable power supplies, which are the first programmable power supply 6, the second programmable power supply 5, and the third programmable power supply 4 from left to right.

[0041] The programmable power supply group is linearly connected to the switching module 8. The switching module 8 is linearly connected to the voltage sensor, and the short-time current is linearly connected to the current sensor.

[0042] The first voltage sensor group is provided with the first voltage sensor 9 and the second voltage sensor 10; the first current sensor group 11 is provided with the first current sensor 11, the second current sensor 12, the third current sensor 13, and the fourth current sensor 14.

[0043] The second voltage sensor group 10 is provided with the third voltage sensor 19 and the fourth voltage sensor, and the second current sensor group 12 is provided with the fifth current sensor 21, the sixth current sensor 22, the seventh current sensor 23, and the eighth current sensor 24.

[0044] The switching module 8 is linearly connected to the IN+ interface of the first voltage sensor 9, the switching module 8 is connected to the IN+ interfaces of the third current sensor 13 and the fourth current sensor 14, the short-time power supply 3 is linearly connected to the IN+ interface of the second voltage sensor 10, and the short-time power supply 3 is linearly connected to the first current sensor 11 and the second current sensor 12.

[0045] The M interfaces of the first voltage sensor group 9 and the first current sensor group 11 are linearly connected to the first control relay 16, and the AI interface and the COM interface of the NI acquisition card 15 are linearly connected to the T interfaces of the first voltage sensor group 9, the first current sensor group 11, and the first power supply module 17.

[0046] The +5v pin of the power supply module is connected to the 5v pin of the second control relay 25, the +2v' pin of the second control relay is connected to the +5v pins of the second voltage sensor group 10 and the second current sensor group 12, and the 3v pin of the power supply module is linearly connected to the -15v pins of the second voltage sensor group 10 and the second current sensor group 12.

[0047] The models of the first voltage sensor group 9 and the second voltage sensor group 10 are CHV-300VD, the models of the first current sensor 11, the second current sensor 12, the fifth current sensor 21, and the sixth current sensor 22 are CHB-100A / 5V, and the models of the third current sensor 13, the fourth current sensor 14, the seventh current sensor 23, and the eighth current sensor 24 are CHB-5AD.

[0048] A voltage sensor and a current sensor are connected to a relay, and the relay transfers the corresponding voltage and current during the test to the NI acquisition card 15 for acquisition. The digital IO card 7 is connected here to the product under test to collect the normally open and normally closed signals. The parameters of the power supply to be used are configured in the system software, and the voltage and current are supplied to the product under test through the used power supply. The acquisition card acquires the voltage value and current value, and then returns the final data to the system software. The system software presents the test data and data waveforms and saves and stores the data.

[0049] To prove the creativity and technical value of the technical solution of the present invention, this part is an application embodiment of the technical solution of the claim on a specific product or related technology.

[0050] Embodiment 1: Measurement of auxiliary contact resistance

[0051] Measurement of Class 1 and Class 2 auxiliary contact resistance. One sample of each type of Class 1 and Class 2 auxiliary contacts is connected to a resistive load circuit, and then a DC power supply with an open-circuit voltage of 6V (relative deviation of 0 - 15%) is applied to this circuit to make a current of 10mA ± 2mA flow through it. The resistance is measured in accordance with GB / T5095.2.

[0052] Under these measurement conditions, the resistance of the closed Class 1 and Class 2 auxiliary contacts shall not exceed 50Ω.

[0053] Note: Oxidation of the contact material may reduce the effective current-carrying capacity. This will lead to an increase in the contact resistance, and even the circuit cannot conduct at very low voltages, while problems cannot be found at higher voltages. The purpose of this test is to verify the contact performance of the contacts under these low-voltage conditions, and the evaluation criterion takes into account the non-linearity of the resistance. The value of 50Ω is from statistical considerations and has been accepted by users.

[0054] Measurement of Class 3 auxiliary contact resistance. One sample of Class 3 auxiliary contacts is connected to a resistive load circuit, and then a DC power supply with an open-circuit voltage ≤ 30mV is applied to this circuit to make a current ≤ 0mA flow through it. The resistance is measured in accordance with 4.12 in GB / T21711.7 - 2018.

[0055] The resistance of the closed Class 3 auxiliary contacts shall not exceed 1Ω.

[0056] Reference standard: GB / T 11022 - 2020 7.4.2

[0057] Customized power supply 1: DC, constant current 10mA, voltage 0 - 6V adaptive, accuracy ±1%;

[0058] Customized power supply 2: DC, voltage adaptable from 0 to 30 mV, current adjustable from 0 to 10 mA, accuracy ±1%;

[0059] Customized power supply 3: DC, constant current from 0 to 5 A (100 mA / 1 A / 5 A), voltage adaptable from 0 to 250 V, accuracy ±1% (specially for measuring contact resistance before and after short-time withstand and opening / closing tests);

[0060] Functions achieved:

[0061] ● For resistive circuits, measurement by voltage drop method;

[0062] ● Measurement time: 0 to 5 s;

[0063] ● Support one-key measurement and can save measurement data;

[0064] ● Parameters that can be set: test current value (mA);

[0065] ● Output parameters: test voltage value (V), test current value (mA), result resistance value (mΩ).

[0066] Example 2: Ground continuity

[0067] Normal visual inspection is sufficient to assess compliance. However, alternatively, all metal parts and enclosures that may be touched and grounded during normal operation can be tested with a 30 A (DC) current, and the voltage drop to the grounding point should be less than 3 V. (Note: It may be necessary to locally remove the coating at the measurement point)

[0068] Ground continuity test is generally carried out after the cabinet assembly is completed, mainly testing the structural parts on the cabinet that install or protect devices or single boards that may carry dangerous voltages, such as AC mounting boards, DC mounting boards, front doors, and various protective covers, etc.

[0069] This system can realize the automatic acquisition of the current and voltage of the grounding continuity test for high-voltage switches. The specific process is as follows:

[0070] The grounding continuity test consists of 1 DC voltage channel (0 to 10 V) and 1 DC current channel (30 A). Users can configure the acquisition parameters, set the acquisition time according to actual needs, and after triggering the acquisition, the system can perform automatic measurement; at the same time, users can control the state of the high-voltage switch through the digital IO card and collect the corresponding digital quantities. Each trigger will perform data acquisition for a certain period of time. After each acquisition ends, the analog and digital quantities can be automatically stored, waiting for the next trigger and continuing with the automatic storage of data. Moreover, the data collected each time will be stored by the system through a tree-like file storage structure. All data will ultimately be automatically filled into the table.

[0071] Reference standard: GB / T 11022-2020 7.4.3

[0072] Customized power supply 3: DC, constant current source adjustable from 0 to 30A, voltage adaptable from 0 to 10V, accuracy ±1%;

[0073] Functions to be achieved:

[0074] ● Resistive circuit, measured by voltage drop method;

[0075] ● Measurement time: 0 to 5s;

[0076] ● Support one-key measurement and can save measurement data;

[0077] ● Parameters that can be set: test current value (A);

[0078] ● Output parameters: test current value (A), measured resistance value (Ω), result voltage drop value (V).

[0079] Example 3: Rated continuous current of auxiliary contacts

[0080] Rated short-time withstand current test of auxiliary contacts, which verifies the ability of pre-closed auxiliary contacts to carry current within a specified short time.

[0081] The opening and closing mode of the circuit shall be independent of the tested contacts. The contacts shall carry the rated short-time withstand current of the corresponding grade in accordance with GB / T11022-2020 for 30ms in a resistive circuit. The required current value shall be reached within 5ms after the start of the current. The relative deviation of the test current amplitude is +5 - 0%, and the deviation of the test current duration is +10 - 0%.

[0082] This test shall be repeated 20 times, and the interval between two tests is 1min. The contact resistance value shall be measured at 50% of the rated continuous current specified in GB / T11022-2020 before and after the test, and the contacts shall be at the ambient air temperature for both measurements.

[0083] The test is considered to pass if the following requirements are met:

[0084] After the test, the increase in resistance is less than 20%;

[0085] Or, if it exceeds 20%, a continuous current test shall be carried out in accordance with GB / T 11022-2020 7.5.3.2 and shall pass successfully.

[0086] Reference standard: GB / T 11022-2020 7.10.3.3

[0087] Customized power supply 4: DC, constant current adjustable from 0 to 10A (10A / 2A / 200mA), voltage adaptable from 0 to 2V, accuracy ±1%

[0088] Function to be achieved:

[0089] ● Connect all auxiliary contacts to the circuit in series;

[0090] ● It can conduct continuous current for 8 hours or more;

[0091] ● Support one-key operation;

[0092] ● Parameters that can be set: test current value (A / mA);

[0093] ● Output parameters: test current value (A / mA);

[0094] Example 4: Rated short-time withstand current of auxiliary contacts

[0095] When a short circuit occurs in the power grid, it is required that the protective electrical appliance can quickly act to cut off the short-circuit circuit. However, it takes time to cut off the short-circuit circuit. Therefore, it is required that the electrical appliances on the main circuit can withstand the thermal shock of the short-circuit current within a short time without being damaged. Therefore, before the power system is used, it is necessary to test the withstand situation of the high-voltage switch.

[0096] This system can realize the automatic acquisition of the short-time withstand test current of the high-voltage switch. The specific process is as follows:

[0097] The short-time withstand test data acquisition consists of only one DC current (0 - 100A) channel. The user configures the parameters of the data acquisition card, sets the acquisition time according to actual needs, and after triggering the data acquisition card, the system can perform automatic measurement; at the same time, the user can control the state of the high-voltage switch through the digital IO card and collect the corresponding digital quantity. Each trigger will perform data acquisition for a certain period of time. After each acquisition is completed, the analog quantity and digital quantity can be automatically stored, waiting for the next trigger and continuing the automatic storage of data. Moreover, the data collected each time will be stored through the tree file storage structure by the system. All data will ultimately be automatically filled into the table.

[0098] Customized power supply 5: DC, constant current 1A / 100A, voltage 0 - 30V adaptive, accuracy +5%.

[0099] Function to be achieved:

[0100] ● The time for the loop current to rise to the preset current ≤ 5ms;

[0101] ● Each trigger, the current duration is 30ms, accuracy +10%;

[0102] ● The number of continuous triggers can be set (the maximum number is not less than 20 times), and the trigger interval time can be set (the minimum interval time is not less than 1 minute);

[0103] ● Support one-key measurement (measurement process: contact resistance measurement before the test - short-time withstand - contact resistance measurement after the test), and can save measurement data;

[0104] ● Parameters that can be set: contact resistance measurement test current value (A / mA), short-time withstand test current value (A / mA), single trigger duration (ms), number of triggers (times);

[0105] ● Output parameters: time (ms) when the short-time withstand loop current reaches the preset value, short-time withstand test current value (A / mA), single trigger duration (ms), number of triggers (times), short-time withstand test data graph, contact resistance values (mΩ) before and after the short-time withstand test.

[0106] Breaking capacity of auxiliary contacts in Example 5

[0107] During the process of users using high-voltage electricity, there must be a device to ensure its safety, and the circuit breaker is an important device to improve the safety during the use of high-voltage electricity. Therefore, before the power system is used, the high-voltage DC circuit breaker must be tested to ensure its normal operation.

[0108] This system can realize the automatic acquisition of the current and voltage of the opening test of the high-voltage switch, and the specific process is as follows:

[0109] The acquisition of opening test data consists of 1 DC voltage channel (negative voltage will be generated during the switching process) and 1 DC current channel. Users can configure the parameters of the data acquisition card, set the acquisition time according to actual needs, and after triggering the data acquisition card, the system can perform automatic measurement; at the same time, users can control the state of the high-voltage switch through the digital IO card and collect the corresponding digital quantity. Each trigger will perform data acquisition for a certain period of time. After each acquisition is completed, the analog quantity and digital quantity can be automatically stored, waiting for the next trigger and continuing to automatically store the data, and the data collected each time will be stored through the tree file storage structure by the system. All data will ultimately be automatically filled into the table.

[0110] Customized power supply 6: DC, voltage adjustable from 0 to 250V, accuracy +10%, current adjustable from 0 to 5A, accuracy +5%

[0111] Customized power supply 7: DC, voltage 0 to 250V, current 0 to 20A adaptive

[0112] Functions achieved:

[0113] (1) The test loop is an inductive loop;

[0114] (2) The test loop is equipped with adjustable resistors and adjustable inductors for adjusting the test current and time constant (adjustable time constant ≥ 20ms);

[0115] (3) The test control circuit can control the sample main circuit to perform closing - t1 - opening - t2 operations, and repeat them n times, where t1 = 0 - 60 s, t2 = 0 - 180 s, and n = 0 - 99 times can be set;

[0116] (4) The power supply of the test circuit maintains power supply during the test. After the control circuit controls the main circuit to open for the last time, the power supply of the test circuit continues to remain for 300 ms ± 30 ms and then disconnects;

[0117] (5) Support one - key measurement (measurement process: contact resistance measurement before the test - breaking capacity - contact resistance measurement after the test), and can save measurement data;

[0118] (6) Parameters that can be set: contact resistance measurement test current value (A / mA), breaking capacity test circuit inductance value (h), breaking capacity test current value (A), breaking capacity test voltage value (V), control circuit voltage value (V), control circuit closing - opening times (times), control circuit closing - opening interval time (s);

[0119] (7) Output parameters: time constant (ms), breaking capacity test current value (A), breaking capacity test voltage value (V), breaking capacity test circuit current - passing duration per time (s), breaking capacity test circuit breaking times (times), breaking capacity test circuit breaking data graph, contact resistance values (mΩ) before and after the breaking capacity test.

[0120] Some positive effects have been achieved during the R & D or use process of the embodiments of the present invention. Compared with the prior art, it indeed has great advantages. The following content will be described in combination with the data, charts, etc. of the test process.

[0121] This device can meet the automated measurement of test data, automatically generate test records, ensure the safe use of high - voltage electricity, meet user requirements, and improve work efficiency.

[0122] ● The operation and use of the system should be built according to the convenience of operation, using mature operation processes, working modes, and human - machine interfaces. Conduct targeted optimization design according to the task characteristics to improve the automation level of system control, management, and self - diagnosis. Build the project software with reference to standards such as GJB 2786A - 2009, and it can meet the expected building indicators.

[0123] ● The entire standard device runs stably and works reliably. The software building structure is reasonable and easy to install.

[0124] ● The system structure is stable, and data is stored in the form of a database to ensure data security.

[0125] ● Adopt general and modular system software and hardware, and each test item can operate independently according to the configuration; each instrument is easy to connect and maintain; the system is easy to maintain.

[0126] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0127] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention by those skilled in the art within the technical scope disclosed by the present invention shall be covered by the protection scope of the present invention.

Claims

1. A control circuit additional test complete set, characterized in that: Features: Engineering machinery; The engineering machine is linearly connected to the programmable power supply group and the disconnection module via RS232, the engineering machine is linearly connected to the digital IO card and the temperature and humidity sensor via USB, the engineering machine is linearly connected to the NI acquisition card and the first control relay via RS232, and the NI acquisition card is linearly connected to the first voltage sensor group and the first current sensor group; The disconnecting module and the short-time power supply are connected to a first voltage sensor group and a first current sensor group; The digital IO card is linearly connected to a power module, and the power module is linearly connected to a second control relay, a second voltage sensor group, and a second current sensor group.

2. The control circuit additional test set as claimed in claim 1, characterized in that: The programmable power supply group is provided with three programmable power supplies, which are respectively a first programmable power supply, a second programmable power supply and a third programmable power supply from left to right.

3. The control circuit additional test set as claimed in claim 1, characterized in that: The programmable power supply group is linearly connected to the disconnection module, the disconnection module is linearly connected to the voltage sensor, and the short-time current is linearly connected to the current sensor.

4. The control circuit additional test set as claimed in claim 1, characterized in that: The first voltage sensor group includes a first voltage sensor and a second voltage sensor; the first current sensor group includes a first current sensor, a second current sensor, a third current sensor, and a fourth current sensor.

5. The control circuit additional test complete set as claimed in claim 1, characterized in that: The second voltage sensor group includes a third voltage sensor and a fourth voltage sensor, and the second current sensor group includes a fifth current sensor, a sixth current sensor, a seventh current sensor, and an eighth current sensor.

6. The control circuit additional test set as claimed in claim 1, characterized in that: The disconnecting module is linearly connected to the IN+ interface of the first voltage sensor, the disconnecting module is connected to the IN+ interfaces of the third current sensor and the fourth current sensor, the short-time power supply is linearly connected to the IN+ interface of the second voltage sensor, and the short-time power supply is linearly connected to the first current sensor and the second current sensor.

7. The control circuit additional test complete set as claimed in claim 1, characterized in that: The M interfaces of the first voltage sensor group and the first current sensor group are linearly connected to the first control relay, and the AI ​​interface and the COM interface of the NI acquisition card are linearly connected to the T interfaces of the first voltage sensor group, the first current sensor group and the first power module.

8. The control circuit additional test complete set as claimed in claim 1, characterized in that: The +5v pin of the power module is connected to the 5v pin of the second control relay, the +2v' pin of the second control relay is connected to the +5v pin of the second voltage sensor group and the second current sensor group, and the 3v pin of the power module is linearly connected to the -15v pin of the second voltage sensor group and the second current sensor group.

9. The control circuit additional test complete set as claimed in claim 1, characterized in that: The models of the first voltage sensor group and the second voltage sensor group are CHV-300VD.

10. The control circuit additional test complete set as claimed in claim 4 or 5, characterized in that: The models of the first current sensor, the second current sensor, the fifth current sensor and the sixth current sensor are CHB-100A / 5V, and the models of the third current sensor, the fourth current sensor, the seventh current sensor and the eighth current sensor are CHB-5AD.

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