Modularized rapid detection device of box-type substation

Abstract

The invention provides a modularized rapid detection device of a box-type substation, and belongs to the technical field of operation and maintenance of box-type substations. Comprising a movable vehicle body and a detection system arranged on the vehicle body, and the detection system comprises a control unit, a transformation ratio direct current resistance test module, a high-low voltage switching device and an automatic short circuit device; the transformation ratio direct current resistance test module comprises a variable frequency power supply, a voltage regulator, an intermediate transformer, a compensation capacitor bank, a direct current resistance unit, a transformation ratio unit, a direct current resistance transformation ratio commutation switching module and a measurement module; the direct current resistance unit, the transformation ratio unit, the measurement module, the high and low voltage switching device and the automatic short circuit device are all in communication connection with the interior of the control unit. Through the modular structure and the automatic switching wiring function, the detection process is simplified, the detection of the box-type substation can be rapidly and accurately completed, the detection efficiency is improved, the labor cost is reduced, and meanwhile, the detection reliability and safety are also ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of box-type substation operation and maintenance, and in particular relates to a modular quick inspection device for a box-type substation. Background Art

[0002] The box-type substation (abbreviated as box-type substation) is an important part of the power system, used for power distribution and conversion. It consists of ring network cabinets, transformers, low-voltage switch cabinets and other equipment, and is widely used in urban construction, industrial parks, rural power grids and other places. The safe operation of the box-type substation is crucial to the stability of the power grid and the quality of power supply services.

[0003] There are some problems and challenges when conducting random inspections of box-type substations. First, according to the annual random inspection requirements, there are many test items, which leads to a large workload and a long time for random inspections. Secondly, the wiring of box-type substations is complicated, and it is necessary to dismantle and replace the lines, which increases labor costs and safety hazards, and reduces the efficiency of inspections. In addition, traditional inspection centers usually use fixed workstations, and the box-type substations to be inspected need to be moved to the inspection station. However, the box-type substations are large in size and heavy in weight, and are not easy to transport between different workstations, which poses a safety risk. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a modular quick inspection device for a box-type substation.

[0005] In order to solve one, part or all of the above technical problems, the technical solution adopted by the present invention is: A modular quick inspection device for a box-type substation, comprising a movable body and a detection system entirely arranged on the body, wherein the detection system comprises a control unit, a ratio direct resistance test module, a high and low voltage switching device and an automatic short circuit device; The ratio direct-resistance test module includes a variable frequency power supply, a voltage regulator, an intermediate transformer, a compensation capacitor group, a direct-resistance unit, a ratio unit, a direct-resistance ratio phase-change switching module and a measuring module; the input ends of the variable frequency power supply and the voltage regulator are both connected to the power supply incoming line, and the output end of the voltage regulator is also connected to the intermediate transformer and the compensation capacitor group in sequence; the measuring module is connected to the output end of the variable frequency power supply, or connected to the output end of the intermediate transformer after switching; the measuring module is connected to the input end of the intermediate transformer, or connected to the middle tap of the intermediate transformer after switching; the direct-resistance unit and the ratio unit are both connected to the direct-resistance ratio phase-change switching module; The high and low voltage input ends of the high and low voltage switching device are respectively connected to the high voltage winding and the low voltage winding of the transformer in the box-type transformer to be detected; the high and low voltage output ends of the high and low voltage switching device are connected to the direct resistance ratio switching module, or the high voltage output end of the high and low voltage switching device is connected to the measurement module after switching; The automatic short-circuit device is connected to the low-voltage input terminal of the high-low voltage switching device; The DC resistance unit, the transformation ratio unit, the measurement module, the high and low voltage switching device and the automatic short-circuit device are all connected to the control unit for internal communication.

[0006] Furthermore, the detection system also includes an insulation test module; the insulation test module includes an industrial frequency test transformer and an insulation resistance test module, the industrial frequency test transformer is connected to the measurement module, and the insulation resistance test module is connected to the auxiliary and control circuits in the transformer to be detected where the insulation resistance needs to be measured; the insulation resistance test module is also connected to the internal communication of the control unit.

[0007] Furthermore, the power frequency test transformer is also connected to the power frequency test line through a protective resistor, and the power frequency test line is also connected to the measurement module after connecting the capacitive voltage divider; the power frequency test line is used to connect the high-voltage connection line of the medium and high voltage switch cabinet of the box transformer to be tested.

[0008] Furthermore, the detection system also includes a comprehensive test module; the comprehensive test module includes a loop resistance test module connected to the upper and lower breaks of the high-voltage switch in the box-type transformer to be tested, a ground wire continuity test module connected to the part of the box-type transformer to be tested where the on-resistance needs to be measured, a switch mechanical characteristics test module connected to the opening and closing of the high-voltage switch, the energy storage control end, and the upper and lower breaks of the high-voltage switch in the high-voltage switch cabinet of the box-type transformer to be tested, and a high-voltage pulse test module connected to the impulse withstand voltage test part of the low-voltage switch cabinet of the box-type transformer to be tested; the loop resistance test module, the ground wire continuity test module, the switch mechanical characteristics test module and the high-voltage pulse test module are also connected to the internal communication of the control unit.

[0009] Furthermore, the detection system also includes a temperature rise test module; the temperature rise test module includes a thermometer host connected to the internal communication of the control unit, and a plurality of wireless thermometers connected to the thermometer host; the wireless thermometers are arranged at the temperature measurement position of the box transformer to be detected.

[0010] Furthermore, it also includes a host computer connected to the external communication of the control unit, and the host computer is used to issue instructions to the control unit and receive test data.

[0011] Furthermore, the high-low pressure switching device is filled with SF6 gas; the test gears of the high-low pressure switching device include no-load test, load test, high pressure to low pressure and ground, high-low pressure to ground, and low pressure to high pressure and ground.

[0012] Furthermore, the modular quick inspection device is used to perform transformer winding DC resistance test, transformer voltage ratio measurement and connection group number verification, transformer no-load loss and no-load current test, transformer short-circuit impedance and load loss test, induced voltage withstand test, high-voltage connecting line power frequency voltage withstand test, low-voltage connecting line power frequency voltage withstand test, switch cabinet power frequency voltage withstand test, box transformer temperature rise test, transformer temperature rise test, switch cabinet switch mechanical characteristics test, loop resistance test, and ground wire conduction resistance test.

[0013] Furthermore, the vehicle body includes a front compartment and a rear compartment, a high and low voltage plate is arranged on the upper part of the rear compartment, and a high voltage test line and a low voltage test line of the high and low voltage switching device are arranged on the high and low voltage plate; a high voltage switch assembly is arranged on the back of the high and low voltage plate.

[0014] Furthermore, the vehicle body is a stand-on structure, a footrest is provided at the front of the front compartment, and an operating lever for controlling the movement of the vehicle body is provided at the top of the front compartment.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention combines and coordinates a control unit, a ratio direct resistance test module, an insulation test module, a high and low voltage switching device, an automatic short circuit device, a comprehensive test module, a temperature rise test module, etc., and highly integrates all equipment such as a test power supply, a control circuit, and a measurement into one, and can automatically complete the detection of multiple items including the items that must be inspected during the random inspection of a box-type substation, as well as the box-type transformer temperature rise test, the transformer temperature rise test, the switch cabinet switch mechanical characteristics test, the loop resistance test, and the ground wire conduction test. The present invention simplifies the detection process through a modular structure and a one-time wiring automatic switching function, can quickly and accurately complete the detection of a box-type substation, improves the detection efficiency, reduces labor costs, and also ensures the reliability and safety of the detection. The device has important application value in the rapid detection and maintenance of box-type substations.

[0016] The power supply and some switching elements of the equipment of the present invention adopt high-frequency switching tubes, which can realize fast power switching and efficient energy conversion. The high-frequency switching tube has the characteristics of low switching loss, high switching speed and high temperature stability, and can complete the power switching operation in a short time, thereby improving the working efficiency and response speed of the equipment. The high-low voltage switching device of the present invention adopts SF6 gas filling technology to provide insulation and arc extinguishing; SF6 gas, as an insulating medium, has excellent insulation performance and arc extinguishing characteristics. In the high-voltage switching switch, SF6 gas can effectively isolate the high-voltage circuit, and at the same time, quickly extinguish the arc and maintain the electrical stability and safety of the equipment during the switching operation. The fast response and efficient energy conversion capabilities of the high-frequency switching tube are combined with the excellent insulation and arc extinguishing characteristics of SF6 gas to provide faster and more stable power switching and high-voltage operation, thereby improving the reliability and working efficiency of the equipment. At the same time, the volume and weight of the equipment are also optimized, making the equipment more compact and lightweight, suitable for various scenarios and environments, improving the performance and applicability of the equipment, and meeting the needs of modern rapid detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 : Circuit schematic diagram of the detection system of the present invention; Figure 2 : Block diagram of the detection system of the present invention; Figure 3 : A front view of the vehicle body of the present invention; Figure 4 : A top sectional view of a vehicle body of the present invention; Figure 5 : Rear view of the vehicle body of the present invention; Figure 6 : One of the three-dimensional views of the vehicle body of the present invention; Figure 7 : The second stereogram of the vehicle body of the present invention; Among them: 100-car body, 110-front compartment, 111-control box, 120-rear compartment, 121-first chassis, 122-second chassis, 123-high and low voltage plates, 124-high voltage switch assembly, 125-first component board, 126-second component board, 130-pedal, 141-warning light, 142-operating lever, 200-detection system, 201-control unit, 210-ratio direct resistance test module, 211-frequency conversion power supply, 212-voltage regulator, 213-intermediate transformer, 214-compensation capacitor group, 215-direct resistance unit, 216-ratio unit , 217-DC-resistance ratio switching module, 218-measurement module, 220-insulation test module, 221-power frequency test transformer, 222-insulation resistance test module, 230-high and low voltage switching device, 240-automatic short-circuit device, 250-comprehensive test module, 251-loop resistance test module, 252-ground wire continuity test module, 253-switch mechanical characteristics test module, 254-high voltage pulse test module, 260-temperature rise test module, 261-thermometer host, 262-wireless thermometer, 300-host computer, 400-test platform. DETAILED DESCRIPTION

[0019] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and the accompanying drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0020] Example 1: See Figure 1-Figure 7 The purpose of this embodiment is to provide a modular quick inspection device for a box-type substation, including a movable vehicle body 100 and a detection system 200 entirely arranged on the vehicle body 100 .

[0021] like Figure 1-Figure 2 As shown, the detection system 200 includes a control unit 201 and a transformation ratio direct resistance test module 210, an insulation test module 220, a high and low voltage switching device 230, an automatic short-circuit device 240, a comprehensive test module 250 and a temperature rise test module 260, all of which are locally connected to the control unit 201 for communication.

[0022] The ratio DC-resistance test module 210 includes a variable frequency power supply 211, a voltage regulator 212, an intermediate transformer 213, a compensation capacitor group 214, a DC-resistance unit 215, a ratio unit 216, a DC-resistance ratio switching module 217 and a measurement module 218. The variable frequency power supply 211 is a sine wave AC variable frequency power supply, which is used as an inductive frequency multiplication test power supply in the system, and its input end is connected to a 380V power supply line, and its output end is connected to the inductive test static contact of the switch DK1; the parameter of the variable frequency power supply 211 is 15kVA 0-850V. The input end of the voltage regulator 212 is connected to the 380V power supply line, and the output end is connected to the intermediate transformer 213; the output end of the voltage regulator 212 is also connected to the 400V static contact of the switching switch DK2; the middle tap of the intermediate transformer 213 is connected to the 50V static contact of the switching switch DK2; the output end (650V) of the intermediate transformer 213 is connected to the compensation capacitor group 214 and the characteristic test static contact of the switching switch DK1; the switching switch DK1 and the switching switch DK2 are both single-pole double-throw switches, the moving contact of the switching switch DK1 is connected to the measuring module 218 after the series switch CK3, and the moving contact of the switching switch DK2 is connected to the measuring module 218 after the series switch CK4; the input end of the variable frequency power supply 211 is also connected in series with the switch CK1, and the input end of the voltage regulator 212 is connected in series with the switch CK2. The DC resistance unit 215 and the ratio unit 216 are both connected to the DC resistance ratio switching module 217. The DC resistance ratio switching module 217 is used to switch test items, such as connecting the DC resistance unit 215 to perform a DC resistance test (transformer winding DC resistance test), or connecting the ratio unit 216 to perform a transformer ratio test, and is also used to switch the phase line during the test. The measurement module 218 is a high-precision measurement module used to measure test voltage, current, frequency, power and other data.

[0023] The insulation test module 220 includes a power frequency test transformer 221 and an insulation resistance test module 222. One side of the power frequency test transformer 221 is connected to the power frequency test line through a protective resistor, and the other side is connected to the measurement module 218; the power frequency test line is also connected to the measurement module 218 after connecting the capacitor voltage divider; the power frequency test line is used to connect the high-voltage connection line of the medium and high voltage switch cabinet of the box transformer to be tested. The test line of the insulation resistance test module 222 is used to connect the auxiliary and control circuits of the box transformer to be tested where the insulation resistance needs to be measured. The power frequency test transformer 221 uses an inductive voltage regulator.

[0024] The high and low voltage input ends of the high and low voltage switching device 230 are respectively provided with a high voltage test line and a low voltage test line, wherein the high voltage test line is used to connect the high voltage winding of the transformer in the box transformer to be tested, and the low voltage test line is used to connect the low voltage winding of the transformer in the box transformer to be tested; two of the output ports of the high and low voltage switching device 230 are a high voltage output port and a low voltage output port, and when necessary, the high voltage or low voltage of the box transformer can be output through the corresponding output port for testing. Two of the output ends of the high and low voltage switching device 230 are respectively connected to the two moving contacts of the switching switch DK3, and the switching switch DK3 is a double-pole double-throw switch, which is provided with a set of DC resistance ratio test static contacts and a set of characteristic test static contacts, and the two DC resistance ratio test static contacts are connected to the DC resistance ratio phase switching module 217.

[0025] The automatic short-circuit device 240 is connected to the low-voltage input terminal (low-voltage test line) of the high-low voltage switching device 230 to simulate a short-circuit state, for example, to provide a phase-to-phase short-circuit connection.

[0026] The comprehensive test module 250 includes a loop resistance test module 251, a ground wire conduction test module 252, a switch mechanical characteristic test module 253 and a high voltage pulse test module 254. The test line of the loop resistance test module 251 is used to connect the upper and lower breaks of the high voltage switch in the box-type transformer to be tested; the test line of the ground wire conduction test module 252 is used to connect the part of the box-type transformer to be tested where the conduction resistance needs to be measured; the switch mechanical characteristic test module 253 is provided with a switch control test line and a switch upper port test line, the switch control test line is used to connect the high voltage switch opening and closing and energy storage control end of the high voltage switch cabinet in the box-type transformer to be tested, and the switch upper port test line is used to connect the upper and lower breaks of the high voltage switch in the box-type transformer to be tested; the test line of the high voltage pulse test module 254 is used to connect the impulse withstand voltage test part of the low voltage switch cabinet in the box-type transformer to be tested.

[0027] The temperature rise test module 260 includes a thermometer host 261 and a plurality of wireless thermometers 262, and the wireless thermometers 262 are all connected to the thermometer host 261. The wireless thermometers 262 are arranged in the transformer to be tested, and are used to detect the temperature data of the corresponding parts.

[0028] The control unit 201 is communicatively connected to the remote host computer 300. An internal communication link is arranged in the detection system 200. The control unit 201, the direct resistance unit 215, the ratio unit 216, the insulation resistance test module 222, the high and low voltage switching device 230, the automatic short-circuit device 240, the loop resistance test module 251, the ground wire continuity test module 252, the switch mechanical characteristic test module 253, the high voltage pulse test module 254, and the thermometer host 261 are all connected in the internal communication link. At the same time, the control unit 201 is also communicatively connected to the remote host computer 300 via the communication link. Therefore, the control unit 201 and the host computer 300 can communicate with other devices connected in the communication link. The control unit 201 is used to control corresponding components according to different test items. For example, the control unit 201 can control the opening and closing of switches CK1-CK4, control the switching of switching switches DK1-DK3, control the DC-resistance ratio switching module 217 to switch the ratio test or the DC-resistance test, switch the phase line, control the high and low voltage switching and gear switching of the high and low voltage switching device 230, and control the closing or starting of the automatic short-circuit device 240. The host computer 300 adopts a remote connection, and the host computer 300 can remotely control the test to ensure the safety distance of personnel.

[0029] The high-low voltage switching device 230 is filled with SF6 gas. As an insulating medium, SF6 has excellent insulation performance and arc extinguishing characteristics. When switching between high and low voltage, SF6 gas can effectively isolate the high-voltage circuit, and quickly extinguish the arc and maintain the electrical stability and safety of the equipment during the switch operation. The test gears of the high-low voltage switching device 230 include no-load test, load test, high voltage to low voltage and ground, high and low voltage to ground, and low voltage to high voltage and ground, and can be switched to the required gear according to different test items. The high-low voltage switching device 230 can automatically switch the high-voltage and low-voltage test lines of the box-type substation and automatically switch the test gears. During the inspection process of the box-type substation, only one wiring is required before the test, and there is no need to adjust the line again during the test, which can reduce manual operation and time consumption and increase safety.

[0030] In the detection system 200, high-frequency switching tubes are applied to the variable frequency power supply 211 and the switch part (such as switches CK1-CK4), which can realize fast power switching and efficient energy conversion. High-frequency switching tubes have the characteristics of low switching loss, high switching speed and high temperature stability, and can complete the power switching operation in a short time, thereby improving the working efficiency and response speed of the equipment.

[0031] like Figure 3-Figure 7 As shown, the vehicle body 100 includes a front compartment 110 and a rear compartment 120. A control box 111 is disposed in the front compartment 110. For example, a control unit 201, communication components, and control components of the vehicle body 100 are disposed in the control box 111. Other electrical components of the detection system 200 are disposed in the rear compartment 120.

[0032] The voltage regulator 212 and the intermediate transformer 213 are arranged in the rear compartment 120 near the front compartment 110, and the power frequency test transformer 221 is arranged near the intermediate transformer 213. The upper part of the rear compartment 120 is provided with a high and low voltage board 123 and a first component board 125, and the rear part is provided with a second component board 126; the high voltage test line and the low voltage test line of the high and low voltage switching device 230 are arranged on the high and low voltage board 123, such as the three interfaces on the upper part of the high and low voltage board 123 are respectively three-phase high voltage test lines, the left interface is a plurality of wires of the low voltage test line, and the right interface is connected to the grounding wire of the box transformer. The first component board 125 and the second component board 126 are provided with a variety of detection systems 200 and connection ports, control buttons and test lines of the equipment in the detection system 200; the back of the high and low voltage board 123 is provided with a high voltage switch assembly 124 connected thereto. A first chassis 121 is also provided at the upper part of the rear compartment 120, and a second chassis 122 is provided at the lower part. The equipment in the detection system 200, such as the variable frequency power supply 211, the ratio direct resistance test module 210, the insulation resistance test module 222, the loop resistance test module 251, the ground wire conduction test module 252, the switch mechanical characteristics test module 253, the high voltage pulse test module 254, etc. are installed in the first chassis 121 or the second chassis 122.

[0033] The vehicle body 100 is a stand-on structure, a footrest 130 is provided at the front of the front compartment 110, and an operating rod 142 is provided at the top of the front compartment 110. The staff stands on the footrest 130 and can control the movement of the vehicle body 100 through the operating rod 142. A warning light 141 is also provided on the top of the vehicle body 100, which can provide real-time feedback on the test status and can also emit a warning light during the test to alert other personnel.

[0034] The quick inspection device provided by the present invention can complete the transformer winding DC resistance test, voltage ratio test and connection group number verification, no-load loss and no-load current test, short-circuit impedance and load loss test, induction withstand voltage test, power frequency withstand voltage test, DC insulation resistance test between windings and other test items in one wiring. The quick inspection device can carry out the C-level test items of the box transformer: insulation test-power frequency voltage withstand test (low voltage connection line), insulation test-power frequency voltage withstand test (high voltage connection line), high voltage switch cabinet-power frequency voltage withstand test. The quick inspection device can carry out the box transformer temperature rise test, the transformer temperature rise test, the switch cabinet switch mechanical characteristics test, the loop resistance test, and the ground wire conduction test.

[0035] The working process of some test items is explained below.

[0036] Transformer winding DC resistance test (DC resistance test): The host computer 300 issues instructions through the control unit 201, the switching switch DK3 connects the DC resistance ratio test circuit, and the high-low voltage switching device 230 connects the DC resistance ratio test circuit. After the test circuit is automatically connected, the DC resistance test instruction is issued to the DC resistance unit 215. The DC resistance unit 215 uses dual channels to simultaneously measure the DC resistance of the high-voltage and low-voltage side windings of the transformer, and the test results are finally fed back to the host computer 300.

[0037] Transformer voltage ratio measurement and connection group number verification: The host computer 300 issues instructions through the control unit 201, the switching switch DK3 connects the direct resistance ratio test circuit, and the high and low voltage switching device 230 connects the direct resistance ratio test circuit. After the test circuit is automatically connected, the ratio unit 216 issues a test instruction to automatically complete the voltage ratio and connection group number verification.

[0038] Transformer no-load loss and no-load current test: The no-load test program of the host computer 300 starts, and a command is issued through the control unit 201 to turn on the switch CK2, switch DK1 is switched to the characteristic test circuit, switch DK3 is switched to the characteristic test circuit, and the high and low voltage switching device 230 is connected to the no-load test circuit; switch CK3 is closed, the test output is connected, the measurement module 218 performs measurement, and the test results are finally fed back to the host computer 300.

[0039] Transformer short-circuit impedance and load loss test: The load test program of the host computer 300 starts, and a command is issued through the control unit 201 to turn on the switch CK2, switch DK1 is switched to the characteristic test circuit, switch DK3 is switched to the characteristic test circuit, the high and low voltage switching device 230 is connected to the load test circuit, and the automatic short-circuit device 240 is short-circuited; the switch CK3 is closed, the test output is connected, the measurement module 218 performs measurement, and the test results are finally fed back to the host computer 300.

[0040] Inductive withstand voltage test: The upper computer 300 starts the withstand voltage test procedure, and issues instructions through the control unit 201 to turn on the switch CK1, connect DK1 to the inductive test circuit, switch DK3 to the characteristic test circuit, and connect the high and low voltage switching device 230 to the no-load test circuit; the switch CK3 is closed, the test output is connected, the measurement module 218 performs measurement, and the test results are finally fed back to the upper computer 300.

[0041] High-voltage connecting line power frequency voltage withstand test: The upper computer 300 voltage withstand test program starts, and a command is issued through the control unit 201 to turn on the switch CK2, switch DK2 to the 400V position, switch CK4, and at the same time turn on the power frequency test transformer 221 and use the capacitor voltage divider to control its voltage boost, and the test output is turned on.

[0042] Low-voltage connecting line power frequency voltage withstand test: The upper computer 300 voltage withstand test program starts, and the control unit 201 issues instructions to turn on CK2, switch DK2 to the 50V position, switch CK4, and at the same time turn on the power frequency test transformer 221 and use a capacitor voltage divider to control its voltage boost. The test output is turned on, and the measurement module 218 performs measurement. The test results are finally fed back to the upper computer 300.

[0043] Box-type transformer temperature rise test, transformer temperature rise test: The temperature rise test program of the host computer 300 starts, and a command is issued through the control unit 201 to turn on the switch CK2, switch DK1 to the characteristic test circuit, switch DK3 to the characteristic test circuit, the high and low voltage switching device 230 to the load test circuit, and the short-circuit device to short-circuit; switch CK3 is closed, the test output is turned on, the measurement module 218 and the thermometer host 261 are measured, and the test results are finally fed back to the host computer 300.

[0044] The rapid testing device also includes a test platform 400, which can be set up separately or in the host computer 300. The test platform 400 includes functional modules such as a task management module, a test creation module, a test execution module, and a system management module, and has many practical functions such as instrument module self-test, test plan storage and call, test item wiring diagram, and automatic generation of original records and test reports. Its module functions are as follows: Task management module: The test platform 400 has a task management function that can comprehensively manage test tasks. You can create, edit and delete test tasks, set task priorities and deadlines, and track the progress of task execution. This function makes the test process more orderly and efficient.

[0045] Create test module: Test platform 400 provides the function of creating tests, which can define test plans and parameters as needed. Through interface interaction, various test parameters can be flexibly set, including test items, test conditions, test time, etc. This function enables test items to adapt to the requirements of different models and experimental forms.

[0046] Execution module: The test platform 400 supports the execution function of the test, that is, the actual test operation is performed according to the test plan and parameters defined by the material quality control platform. Each functional module of the equipment will perform corresponding operations and measurements according to the requirements of the test plan. The platform provides real-time monitoring and feedback, so that the progress and results of the test can be understood at any time. Such real-time feedback helps to adjust the test strategy in time and improve the test effect.

[0047] System management module: The test platform 400 has a system management function for managing user accounts, permissions, and system settings. Administrators can add, delete, and manage user accounts, and set user permissions and roles. At the same time, administrators can also configure and optimize the system to improve system stability and performance.

[0048] In addition, the test platform 400 can be connected to the intranet material quality control platform in real time, realizing seamless connection and data sharing between the test platform 400 and the material quality control platform. This enables the test platform 400 to have the following functions: Intelligent dispatch: The test platform can be connected to the intranet material quality control platform in real time. After receiving the inspection task, it can intelligently dispatch the task to the relevant inspection equipment and personnel. Through the intelligent dispatch function, it can efficiently dispatch and allocate inspection resources to improve the efficiency and quality of task execution.

[0049] Automatic collection: The test platform can automatically collect test data, that is, automatically upload and store the data collected by the test equipment to the intranet material quality control platform. Such automatic collection function can improve the efficiency and accuracy of data management and facilitate subsequent data analysis and utilization.

[0050] Intelligent analysis: The test platform has intelligent analysis function. After the test data is uploaded to the intranet material quality control platform, it can analyze and judge the data through algorithms and models. Such intelligent analysis function can automatically evaluate the qualification and reliability of the test results, helping users to make judgments and decisions quickly and accurately.

[0051] By connecting with the intranet material quality control platform, the test platform realizes "blind inspection" of the entire process of testing operations, that is, during the test process, it ensures the authenticity and reliability of the test data and prevents and resolves corruption risks. Such full-process management and monitoring can improve the credibility and reliability of the test and provide users with safer and more accurate test services. It can be connected with the intranet material quality control platform in real time, and has functions such as intelligent distribution of testing tasks, automatic collection of testing data, and intelligent analysis of test results, realizing "blind inspection" of the entire process of testing operations and preventing and resolving corruption risks.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A modular quick inspection device for a box-type substation, characterized in that: It includes a movable vehicle body and a detection system which is completely arranged on the vehicle body, and the detection system includes a control unit, a ratio direct resistance test module, a high and low voltage switching device and an automatic short circuit device; The ratio direct-resistance test module includes a variable frequency power supply, a voltage regulator, an intermediate transformer, a compensation capacitor group, a direct-resistance unit, a ratio unit, a direct-resistance ratio phase-change switching module and a measuring module; the input ends of the variable frequency power supply and the voltage regulator are both connected to the power supply incoming line, and the output end of the voltage regulator is also connected to the intermediate transformer and the compensation capacitor group in sequence; the measuring module is connected to the output end of the variable frequency power supply, or connected to the output end of the intermediate transformer after switching; the measuring module is connected to the input end of the intermediate transformer, or connected to the middle tap of the intermediate transformer after switching; the direct-resistance unit and the ratio unit are both connected to the direct-resistance ratio phase-change switching module; The high and low voltage input ends of the high and low voltage switching device are respectively connected to the high voltage winding and the low voltage winding of the transformer in the box-type transformer to be detected; the high and low voltage output ends of the high and low voltage switching device are connected to the direct resistance ratio switching module, or the high voltage output end of the high and low voltage switching device is connected to the measurement module after switching; The automatic short-circuit device is connected to the low-voltage input terminal of the high-low voltage switching device; The DC resistance unit, the transformation ratio unit, the measurement module, the high and low voltage switching device and the automatic short-circuit device are all connected to the control unit for internal communication.

2. The modular quick inspection device for box-type substation according to claim 1 is characterized in that: The detection system also includes an insulation test module; the insulation test module includes an industrial frequency test transformer and an insulation resistance test module, the industrial frequency test transformer is connected to the measurement module, and the insulation resistance test module is connected to the auxiliary and control circuits in the box-type transformer to be detected, where the insulation resistance needs to be measured; the insulation resistance test module is also connected to the internal communication of the control unit.

3. The modular quick inspection device for box-type substation according to claim 2 is characterized in that: The power frequency test transformer is also connected to the power frequency test line through a protective resistor, and the power frequency test line is also connected to the measurement module after connecting the capacitive voltage divider; the power frequency test line is used to connect the high-voltage connection line of the medium and high-voltage switch cabinet of the box-type transformer to be tested.

4. The modular quick inspection device for box-type substation according to claim 1 is characterized in that: The detection system also includes a comprehensive test module; the comprehensive test module includes a loop resistance test module connected to the upper and lower breaks of the high-voltage switch in the box-type transformer to be tested, a ground wire continuity test module connected to the part of the box-type transformer to be tested where the on-resistance needs to be measured, a switch mechanical characteristics test module connected to the opening and closing of the high-voltage switch in the high-voltage switch cabinet of the box-type transformer to be tested, the energy storage control end, and the upper and lower breaks of the high-voltage switch, and a high-voltage pulse test module connected to the impulse withstand voltage test part of the low-voltage switch cabinet of the box-type transformer to be tested; the loop resistance test module, the ground wire continuity test module, the switch mechanical characteristics test module and the high-voltage pulse test module are also connected to the internal communication of the control unit.

5. The modular quick inspection device for box-type substation according to claim 1 is characterized in that: The detection system also includes a temperature rise test module; the temperature rise test module includes a temperature measuring instrument host connected to the internal communication of the control unit, and a plurality of wireless temperature measuring instruments connected to the temperature measuring instrument host; the wireless temperature measuring instruments are arranged at the temperature measuring part of the box transformer to be detected.

6. The modular quick inspection device for box-type substation according to claim 1 is characterized in that: It also includes a host computer connected to the control unit for external communication, and the host computer is used to issue instructions to the control unit and receive test data.

7. The modular quick inspection device for box-type substation according to claim 1 is characterized in that: The high-low pressure switching device is filled with SF6 gas; the test gears of the high-low pressure switching device include no-load test, load test, high pressure to low pressure and ground, high-low pressure to ground, and low pressure to high pressure and ground.

8. The modular quick inspection device for box-type substation according to claim 1 is characterized in that: The modular quick inspection device is used to perform transformer winding DC resistance test, transformer voltage ratio measurement and connection group number verification, transformer no-load loss and no-load current test, transformer short-circuit impedance and load loss test, induced voltage withstand test, high-voltage connecting line power frequency voltage withstand test, low-voltage connecting line power frequency voltage withstand test, switch cabinet power frequency voltage withstand test, box transformer temperature rise test, transformer temperature rise test, switch cabinet switch mechanical characteristics test, loop resistance test, and ground wire conduction resistance test.

9. The modular quick inspection device for box-type substation according to claim 1, characterized in that: The vehicle body includes a front compartment and a rear compartment, a high- and low-voltage plate is arranged on the upper part of the rear compartment, a high-voltage test line and a low-voltage test line of the high- and low-voltage switching device are arranged on the high- and low-voltage plate; a high-voltage switch assembly is arranged on the back of the high- and low-voltage plate.

10. The modular quick inspection device for box-type substation according to claim 9, characterized in that: The vehicle body is a stand-on structure, a footrest is arranged at the front of the front compartment, and an operating lever for controlling the movement of the vehicle body is arranged at the top of the front compartment.

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