Rail transit vehicle high-voltage device test system

Abstract

The invention discloses a test system for a high-voltage device of a rail transit vehicle. The test system comprises a climate simulation device, a high-voltage test system and a control system, the high-voltage test system comprises an aging test device, a large-current temperature rise device and a voltage source system. The control system is electrically connected with the climate simulation device and the high-voltage test system. The signal output end of the large-current temperature rise device is electrically connected with the signal input ends of the climate simulation device and the aging test device respectively; the voltage source system comprises a first voltage generator and a second voltage generator, the signal output end of the second voltage generator is electrically connected with the signal input ends of the aging test device and the climate simulation device, and the signal output end of the first voltage generator is electrically connected with the signal input ends of the aging test device and the climate simulation device. The device is used for carrying out insulation interface discharge characteristics, switch equipment tripping performance and temperature rise characteristics, voltage aging tests and partial discharge tests of a high-voltage device of a rail transit vehicle.

Description

Technical Field

[0001] The invention relates to a rail transit vehicle high-voltage device test system, belonging to the technical field of high-voltage testing of a rail transit vehicle network-side system. Background Art

[0002] The high-voltage device on the network side of rail transit vehicles is a special high-voltage power distribution system. Compared with ordinary three-phase power distribution systems, it has the characteristics of cross-regional mobility, multi-system coupling, many equipment installation restrictions, and high reliability and safety requirements. During operation, in addition to bearing the common challenges of power distribution systems such as electrical stress, mechanical stress, and environmental stress, it also has to withstand the impact of changing environmental factors such as high and low temperature shocks, air pressure changes, and high-speed airflow on the electrical and mechanical performance of the product.

[0003] The artificial climate laboratory simulates the extremely complex operating environment of grid-side high-voltage equipment. Research is being conducted on the AC / DC / impact flashover characteristics of the external insulation of grid-side high-voltage equipment components under complex environments such as icing, large temperature differences, and high altitudes. Theoretical research is also being conducted on the interface mechanical properties, partial discharge characteristics, insulation breakdown characteristics of the internal insulation, and electrical characteristics under multi-field coupling, contact mechanics, arcing, and electrical contact behavior. Research is being conducted on the mechanisms of influence of various factors on the physical and chemical damage and electrical characteristics of insulating materials to improve the environmental adaptability and reliability of equipment. To address the service safety issues of high-voltage electrical equipment under the special operating environment of rail transit, research is being conducted on engineering application technologies such as insulation performance of grid-side high-voltage equipment and high-voltage equipment under high-altitude environmental conditions, arc extinguishing characteristics of switches, equipment temperature rise, switch tripping performance, product structure, sealing performance, material aging, and corrosion patterns of metal parts.

[0004] Chinese invention patent CN108957265B discloses a device and method for testing the flashover characteristic degradation rate of a porcelain bushing in a high condensation area. The device includes a signal generator controller, a VFTO generator, and a climate simulator. The signal generator controller is electrically connected to the signal input end of a VFTO pulse generating unit in the VFTO generator, and the signal output end of the VFTO pulse generating unit is connected to the climate simulator. The climate simulator includes a climate simulation chamber, a porcelain bushing, a test bench, a humidity sensor, a humidity display, a transformer, a voltage regulating knob, a humidifying device, a spraying device, and a camera. However, this test device is not fully functional and lacks the functional linkage between an artificial simulated climate chamber cabin and a comprehensive aging chamber. The voltage levels provided by the VFTO generator are relatively few. Summary of the Invention

[0005] The present invention aims to provide a rail transit vehicle high-voltage device test system to simulate the influence of the complex operating environment of rail transit vehicles on the electrical and mechanical properties of high-voltage devices and high-voltage equipment.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A rail transit vehicle high-voltage device test system includes a climate simulation device, a high-voltage test system and a control system; the high-voltage test system includes an aging test device, a large current temperature rise device and a voltage source system arranged in a shielded room, the climate simulation device and the aging test device are arranged on both sides of the shielded room and are electrically connected to the voltage source system in the shielded room; the control system is electrically connected to the signal input end of the climate simulation device, the signal input end of the large current temperature rise device and the signal input end of the voltage source system respectively; the signal output end of the large current temperature rise device is electrically connected to the signal input end of the climate simulation device and the aging test device respectively; the voltage source system includes a first voltage generator and a second voltage generator for providing a voltage source to the aging test device and the climate simulation device; the signal input end of the second voltage generator is electrically connected to the control system, and the signal output end of the second voltage generator is electrically connected to the signal input end of the aging test device and the climate simulation device respectively; the signal input end of the first voltage generator is electrically connected to the control system, and the signal output end of the first voltage generator is electrically connected to the signal input end of the aging test device and the climate simulation device respectively.

[0007] In this solution, the aging test device, high-current temperature rise device, and voltage source system can all be tested using existing known devices. The aging test device can be selected from a high-voltage equipment aging test device and aging test device in a test system disclosed in CN117929868A. The high-current temperature rise device and the transformer in the voltage source system can both be commonly used devices in the market.

[0008] Therefore, the climate simulation device of this rail transit vehicle high-voltage device test system can simulate complex operating environments of rail transit vehicles such as high altitude, alternating temperature and humidity, rain, dirt, spray and ice; it is equipped with a partial discharge power frequency voltage generator, a second voltage generator, and a large current temperature rise device to carry out air gap discharge characteristics, insulation interface discharge characteristics, air tightness, switchgear tripping performance and temperature rise characteristics, voltage aging test and partial discharge test of rail transit vehicle high-voltage systems and high-voltage equipment under the above vehicle operating environment.

[0009] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization: In order to facilitate the implementation of partial discharge and no partial discharge tests, specifically, the high-voltage test system includes an equipment room arranged outside the shielding room; the equipment room includes an inductive voltage regulator, an oil-immersed voltage regulator, an isolation transformer, a high current control cabinet and a no partial discharge control cabinet electrically connected to the control system.

[0010] Specifically, the voltage source system includes a pollution test transformer electrically connected to the signal output end of the first voltage generator, and the signal output end of the pollution test transformer is electrically connected to the signal input end of the climate simulation device; a temperature detection cabinet for measuring the temperature of each voltage source in the voltage source system is provided on one side of the pollution test transformer.

[0011] In order to facilitate the implementation of the power frequency non-partial discharge withstand voltage test and the cyclic thermal test, specifically, the aging test device includes an aging test chamber and a safety test chamber, the signal output ends of the first voltage generator and the second voltage generator are electrically connected to the signal input end of the safety test chamber through a first high-voltage bushing, and the signal output end of the safety test chamber is electrically connected to the signal input end of the aging test chamber.

[0012] Specifically, the climate simulation device includes a cabin and an auxiliary device electrically connected to the cabin. A transition cabin connected to the cabin is provided on one side of the cabin, and a rain shower rack for placing test samples is provided inside the cabin; a high-speed camera and a corona discharge tester are provided inside the cabin, and the signal output end of the high-speed camera is electrically connected to the signal input end of the control system.

[0013] The climate chamber is equipped with a high-speed camera to observe and record the discharge channel, breakdown position and discharge flashover process on the surface of the test piece. The camera shooting signal should be able to be transmitted to the gas control system; a corona discharge tester is equipped to observe the corona discharge position on the surface of the test piece under the action of external voltage, and measure the corona discharge starting voltage and discharge intensity.

[0014] Specifically, a second high-voltage bushing is provided on the cabin, one end of the second high-voltage bushing is electrically connected to the signal output ends of the first voltage generator and the second voltage generator, and the other end of the second high-voltage bushing extends into the cabin and is electrically connected to the test piece.

[0015] Specifically, the length of the second high-voltage bushing located inside the cabin is greater than the length of the second high-voltage bushing located outside the cabin.

[0016] Specifically, the cabin includes a door, a sump is provided at the bottom of the cabin, a drainage interface is provided on the side wall of the cabin, one end of the drainage interface extends into the interior of the cabin and is connected to the sump, and the other end of the drainage interface extends to the outside of the cabin and is connected to the outside world.

[0017] Specifically, the auxiliary device includes a PLC cabinet, a low-voltage power supply cabinet, a rain and ice covering device electrically connected to the inside of the cabin, a humidifying hot mist unit, a refrigeration unit, an air heat exchanger, a water treatment device and several vacuum pumps.

[0018] Specifically, a temperature rise busbar interface for electrically connecting to the high-current temperature rise device is provided on the side wall of the cabin.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1) The climate simulation device of the rail transit vehicle high-voltage device test system of the present invention simulates the complex operating environment of rail transit vehicles such as high altitude, alternating temperature and humidity, rain, dirt, spray and ice in the cabin.

[0020] 2) The rail transit vehicle high-voltage device test system of the present invention is equipped with a first voltage generator, a second voltage generator, a high current system and other equipment, and is used to carry out air gap discharge characteristics, insulation interface discharge characteristics, air tightness, switch device tripping performance and temperature rise characteristics, voltage aging test and partial discharge test of the rail transit vehicle high-voltage system and high-voltage equipment under the above-mentioned vehicle operating environment.

[0021] 3) The power frequency voltage and impulse voltage of the rail transit vehicle high-voltage device test system of the present invention are applied to the artificial climate simulation chamber through a bushing, avoiding the risk of bushing breakage caused by foundation settlement across the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the overall structure of the test system of the present invention; Figure 2 It is a structural schematic diagram of the climate simulation device of the present invention; Figure 3 It is a structural schematic diagram of the high-voltage test system of the present invention; Figure 4 It is an isometric structural diagram of the test system of the present invention.

[0023] In the figure 1-Climate simulation device; 11-Cabin; 111-Transition cabin; 112-Rain shower rack; 113-High-speed camera; 114-Corona discharge tester; 115-Sump; 116-Drainage interface; 117-Temperature rise busbar interface; 118-Gate; 12-Auxiliary device; 121-PLC cabinet; 122-Low-voltage power supply cabinet; 123-Rain shower and ice removal equipment; 124-Humidified hot mist unit; 125-Refrigeration unit; 126-Air heat exchanger; 127-Vacuum pump; 128-Water treatment equipment; 2-High-voltage test system System; 21-Aging test device; 211-Aging test chamber; 212-Safety test chamber; 22-High current temperature rise device; 23-Voltage source system; 24-Shielded room; 25-Equipment room; 251-Inductive voltage regulator; 252-Oil-immersed voltage regulator; 253-Isolation transformer; 254-High current control cabinet; 255-No partial discharge control cabinet; 3-Control system; 4-First voltage generator; 5-Second voltage generator; 6-Pollution test transformer; 7-Temperature detection cabinet; 8-First high-voltage bushing; 9-Second high-voltage bushing. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0025] like Figure 1-Figure 3 As shown, the rail transit vehicle high-voltage device test system of this embodiment includes a climate simulation device 1, a high-voltage test system 2 and a control system 3; the high-voltage test system 2 includes an aging test device 21, a large current temperature rise device 22 and a voltage source system 23.

[0026] The high-voltage test system 2 includes a shielded room 24 and an equipment room 25 disposed outside the shielded room 24. The voltage source system 23 is disposed inside the shielded room 24. The equipment room 25 includes an inductive voltage regulator 251, an oil-immersed voltage regulator 252, an isolation transformer 253, a high-current control cabinet 254, and a partial discharge-free control cabinet 255, whose signal input end is electrically connected to the control system 3.

[0027] The shielding room 24 of this embodiment belongs to the test environment chamber of the power frequency voltage test system. The main function of the electromagnetic shielding room is to prevent the interference of electromagnetic waves from space on the partial discharge measurement of the system. In order to ensure the test and measurement values, the shielding room meets the following indicators to ensure that the system noise level is ≤1.0pC, and the length, width and height are 10m×10m×8m.

[0028] The control system 3 is electrically connected to the climate simulation device 1 and the high-voltage test system 2 respectively; the signal output end of the high-current temperature rise device 22 is electrically connected to the signal input end of the climate simulation device 1 and the aging test device 21 respectively.

[0029] The voltage source system 23 includes a first voltage generator 4 and a second voltage generator 5. The signal output end of the second voltage generator 5 is electrically connected to the signal input ends of the aging test device 21 and the climate simulation device 1, respectively. The signal output end of the first voltage generator 4 is electrically connected to the signal input ends of the aging test device 21 and the climate simulation device 1, respectively. The voltage source system 23 also includes a pollution test transformer 6 electrically connected to the signal output end of the first voltage generator 4. The signal output end of the pollution test transformer 6 is electrically connected to the signal input end of the test sample. A temperature detection cabinet 7 is provided on one side of the pollution test transformer 6.

[0030] The high-voltage test system 2 of this embodiment can perform the following tests on the high-voltage device of a rail transit vehicle: 1. Impulse Voltage System: The second voltage generator 5 generates impulse voltage. This system is used to perform lightning impulse withstand voltage tests, chopped wave withstand voltage tests, and steep wave tests on high-voltage components in the rolling stock grid-side system, including transformers, vacuum circuit breakers, high-voltage disconnectors, insulators, high-voltage cables, and cable accessories, as well as on assembled electrical equipment such as high-voltage electrical boxes, grid-side cabinets, and locomotive roof covers. These tests utilize full-wave and chopped lightning surges (LI), switching surges, and transient voltage waveforms specified in GB 311.1, in accordance with relevant national and international standards.

[0031] 2. Power frequency non-partial discharge withstand voltage test system: Utilizes the voltage generated by the first voltage generator 4 and is mainly used for power frequency withstand voltage test, pollution test (needs to switch the pollution test transformer 6), voltage aging test and partial discharge test of high-voltage electrical boxes, vacuum circuit breakers, cables and cable accessories, bushings, mutual inductors, lightning arresters, insulators, disconnectors and other equipment.

[0032] 3. Cyclic thermal test system: Mainly used for high-current thermal withstand test and electrothermal aging test of high-voltage electrical equipment boxes, vacuum circuit breakers, cables and cable accessories, bushings, mutual inductors, lightning arresters, insulators, disconnectors and other equipment on the high-voltage system of locomotive and rolling stock grid side. It can also perform electrical aging test under the condition of high voltage and high current coupling under the condition of applied high voltage, and has the ability to test partial discharge of the test equipment online.

[0033] The climate simulation device 1 includes a cabin 11 and an auxiliary device 12 electrically connected to the cabin 11. A transition cabin 111 connected to the cabin 11 is provided on one side of the cabin 11, and a rain shower rack 112 for placing test samples is provided inside the cabin 11; a high-speed camera 113 and a corona discharge tester 114 are provided in the cabin 11, and the signal output end of the high-speed camera 113 is electrically connected to the signal input end of the control system 2.

[0034] In this embodiment, a high-speed camera 113 is configured within the climate simulator 1 to observe and record the discharge channels, breakdown locations, and discharge flashover processes on the sample surface. The camera's recording signals should be capable of being transmitted to a control system 3 external to the climate simulator 1. A corona discharge tester 114 is configured to observe the location of corona discharge on the sample surface under the action of an external voltage and to measure the corona discharge inception voltage and discharge intensity. The corona tester primarily comprises a camera, a variable-speed pan / tilt head, an operating console, and protective devices. The operating console is installed in the control room, and the test signals are transmitted to a control system 3 external to the climate simulator 1.

[0035] The cabin 11 is a vertical cylindrical structure with an elliptical head at the top. A second high-voltage bushing 9 is installed on the cabin 11. One end of the second high-voltage bushing 9 is electrically connected to the signal output ends of the first and second voltage generators 4 and 5. The other end of the second high-voltage bushing 9 extends into the cabin 11 and is electrically connected to the test specimen. The length of the second high-voltage bushing 9 located inside the cabin 11 is greater than the length outside the cabin 11. The auxiliary device 12 includes a PLC cabinet 121, a low-voltage power supply cabinet 122, a rain and ice removal device 123 electrically connected to the cabin 11, a humidifying hot mist unit 124, a refrigeration unit 125, an air heat exchanger 126, a water treatment device 128, and several vacuum pumps 127.

[0036] The cabin 11 includes a door 118. A sump 115 is provided at the bottom of the cabin 11. A drainage port 116 is provided on the sidewall of the cabin 11. One end of the drainage port 116 extends into the cabin 11 and communicates with the sump 115. The other end of the drainage port 116 extends outside the cabin 11 and communicates with the outside world. A temperature rise busbar port 117 is provided on the sidewall of the cabin 11 for electrical connection to the high-current temperature rise device 22.

[0037] By means of the equipment in the auxiliary device 12, the climate simulation device 1 of this embodiment has the following test system: (1) Temperature and humidity system: high temperature, low temperature and dehumidification control are achieved through the humidifying hot fog unit 124, the refrigeration unit 125 and the air heat exchanger 126; (2) Altitude system: vacuum, re-pressurization, emergency re-pressurization and over-pressure release control are achieved through several vacuum pumps 127; (3) Comprehensive environmental control system: an integrated system based on humidity control is achieved through the rain and ice equipment 123, the humidifying hot fog unit 124 and the refrigeration unit 125, including rain, ice, hot fog, humidification, water quality treatment, drainage, etc.; (4) Auxiliary system: cables for a full set of electrical equipment, power distribution protection, emergency power supply, monitoring, lighting, intercom, etc., high-voltage bushings, 4000A high-current devices, box-type substations, etc.

[0038] The vacuum pump 127 in this embodiment utilizes two vacuum units operating in parallel to meet the cabin vacuum requirements, taking into account factors such as maximum pumping speed, pressure stability control, and pump backup. The vacuum pumps utilize variable frequency control to meet various operating conditions while maintaining low energy consumption. A separate small vacuum pump is installed in the transition chamber to meet vacuum level and lift rate control requirements.

[0039] Air heat exchanger 126: mainly used to process the air entering the vacuum pump 127 to ensure that the gas temperature is within the normal operating temperature range of the vacuum pump. The air heat exchanger 126 is connected to the circulating water of the centralized cooling tower.

[0040] Refrigeration unit 125: Three sets of cascade refrigeration units are used to achieve temperature control of the cabin 11 and the interior of the cabin 11 at -50°C, -20°C, and +20°C, as well as temperature and humidity operation.

[0041] Humidifying hot mist unit 124: It is equipped with a function-type, pulse, variable frequency, self-tracking ultra-high pressure hot and cold micro mist humidifier for controlling the humidity inside the cabin 11.

[0042] The aging test device 21 includes an aging test box 211 and a safety test box 212. The signal output ends of the first voltage generator 4 and the second voltage generator 5 are electrically connected to the signal input end of the safety test box 212 through the first high-voltage bushing 8, and the signal output end of the safety test box 212 is electrically connected to the signal input end of the aging test box 211.

[0043] The signal output end of the second voltage generator 5 is connected to the first high-voltage bushing 8 through a high-voltage lead. One end of the first high-voltage bushing 8 located in the shielding room 24 is electrically connected to the first voltage generator 4 through a high-voltage lead. The signal output end of the first voltage generator 4 is electrically connected to the second high-voltage bushing 9 through a high-voltage lead. The high-voltage lead between the two devices is supported by a movable insulating support column.

[0044] In this embodiment, the climate simulation device 1 is connected to the shielding room 24 through the second high-voltage bushing 9, and the power frequency voltage, lightning impulse voltage, and operating impulse voltage in the high-voltage test system 2 are applied to the high-voltage test product inside the cabin 11 through the second high-voltage bushing 9; the shielding room 24 and the aging test device 21 are connected through the first high-voltage bushing 8, and the power frequency voltage and lightning impulse voltage in the high-voltage test system 2 are applied to the aging test box 211 through the first high-voltage bushing 8.

[0045] The rail transit vehicle high-voltage device test system of this embodiment can perform the following tests on the rail transit vehicle high-voltage device: (1) Conduct discharge tests on air gaps under different voltage forms, different atmospheric conditions (atmospheric pressure, atmospheric temperature, atmospheric humidity), and different gap structures (electrode arrangement). Based on the test results, summarize the corresponding laws and propose a correction method for the gap breakdown voltage; (2) Conduct AC discharge tests on air gaps under different humidity and fog levels to study the influence of the discharge voltage on the air gap on the conductivity, mass concentration and temperature of fog water. (3) Conduct discharge characteristic tests of air gaps with switching impulse voltage under rain conditions to study the effects of different ambient temperatures, ambient humidity, rainwater conductivity, and rainfall intensity on DC discharge over short air gaps; (4) Conduct air gap discharge tests in a simulated haze environment to study the effects of haze particle size, humidity, and concentration on the short air gap discharge voltage; (5) Simulate the atmospheric conditions in high-altitude tunnels and study the air gap discharge characteristics in high-altitude tunnels; (6) Conduct research on the discharge characteristics of air gaps inside switchgear products such as high-voltage boxes and grid-side cabinets under low pressure, and on the discharge characteristics of various air gaps between exposed conductors in switchgear; (7) Study the effects of different electrode shapes, atmospheric humidity, atmospheric pressure, and gap distance on the discharge characteristics of the air gap in the switchgear. The research results provide experimental data and technical support for the selection of the minimum gap distance of the switchgear; (8) Conduct research on the power frequency breakdown characteristics of the insulating partitions and air composite insulation systems in high-voltage boxes, observe the typical arc development path and the shortest arc development path, and establish a segmented prediction model of the breakdown voltage based on the arc development path to provide a reference for the estimation of the withstand voltage characteristics of the gas-solid composite insulation system; (9) Study on the influence of high altitude and low air pressure on the arc of bow-catenary.

[0046] Research on insulation interface discharge characteristics of high-voltage equipment in rail transit vehicles: (1) Aiming at the problem of surface flashover discharge caused by the surface state of solid insulation, research is conducted on the influence of solid surface physical and chemical characteristics and surface defects on the surface flashover process; (2) Conduct tests on the electric field distribution and flashover characteristics of water droplets attached to the insulating surface under rain or drizzle conditions, study the relationship between the surface flashover voltage and the volume and length of the water droplets, the relationship between the hydrophobicity of the insulating material glue and the flashover voltage, the deformation law of water droplets under the action of an alternating electric field, and the electric field distortion law of the three-phase interface between water droplets, air, and insulation; (3) Simulating atmospheric environments such as fog and haze, light rainfall, etc., conduct experiments on the agglomeration of contamination particles on the surfaces of different insulators to study the accumulation patterns of contamination particles on the surface and their effects on flashover voltage; (4) Conduct AC pollution flashover tests on insulators in low-pressure and complex pollution environments, study the relationship between insulator structure type and pollution flashover voltage, flashover gradient, and air pressure, study the relationship between arc development path and leakage current change during insulator pollution flashover discharge and insulator layout and air pressure, and propose insulator altitude correction to provide technical reference for insulation coordination of external insulation of high-voltage equipment in high-altitude areas; (5) Conduct research on the arc development process of insulator flashover in low-pressure environments and analyze the impact of high-altitude low-pressure environments on arc characteristics; (6) Study the AC flashover characteristics and flashover voltage correction methods of insulators in complex environments with low air pressure, ice coating, and pollution, and provide test data and theoretical basis for the insulation design and safe operation of high-voltage equipment; (7) Conduct research on the physical process of insulator discharge under the combined effects of icing, low pressure and pollution, and analyze the main causes of flashover; (8) Conduct tests on the effects of fog on the AC discharge characteristics of short air gaps and insulators, study the AC fog flash characteristics and their influence laws between insulators and air gaps, reveal the essential laws of fog flash, and propose measures to prevent fog flash in insulation in wet foggy weather; (9) Carry out corona discharge aging tests on insulators to study the effect of corona discharge on the aging characteristics of silicone rubber materials; (10) Conduct research on the changing patterns of AC corona characteristics at different altitudes.

[0047] The high voltage test technical parameters provided by the high voltage test system 2 are: High voltage test technical parameters Serial number Technical Parameters Parameter value 1. Power frequency withstand voltage test voltage 0-150kV 2. Lightning impulse test voltage 0-300kV 3. Switching impulse test voltage 0-200kV 4. Partial discharge test voltage 0-150kV 5. Partial discharge test background ≤1pc 6. Temperature rise test current 4000A (continuous for more than 10 hours) The contents illustrated in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent modifications of the present invention by those skilled in the art shall fall within the scope defined by the claims attached to this application.

Claims

1. A rail transit vehicle high-voltage device test system, characterized by: The invention comprises a climate simulation device (1), a high-voltage test system (2) and a control system (3); the high-voltage test system (2) comprises an aging test device (21), a large-current temperature rise device (22) and a voltage source system (23) arranged in a shielded room (24); the climate simulation device (1) and the aging test device (21) are arranged on both sides of the shielded room (24) and are electrically connected to the voltage source system (23) in the shielded room (24); The control system (3) is electrically connected to the signal input end of the climate simulation device (1), the signal input end (22) of the large current temperature rise device, and the signal input end of the voltage source system (23); the signal output end of the large current temperature rise device (22) is electrically connected to the signal input end of the climate simulation device (1) and the aging test device (21); The voltage source system (23) includes a first voltage generator (4) and a second voltage generator (5) for providing a voltage source to the aging test device (21) and the climate simulation device (1); a signal input end of the second voltage generator (5) is electrically connected to the control system (3), and a signal output end of the second voltage generator (5) is electrically connected to the signal input ends of the aging test device (21) and the climate simulation device (1); a signal input end of the first voltage generator (4) is electrically connected to the control system (3), and a signal output end of the first voltage generator (4) is electrically connected to the signal input ends of the aging test device (21) and the climate simulation device (1).

2. The rail transit vehicle high-voltage device test system according to claim 1, characterized in that: The high-voltage test system (2) includes an equipment room (25) arranged outside the shielding room (24).

3. The rail transit vehicle high-voltage device test system according to claim 2, characterized in that: The equipment room (25) includes an inductive voltage regulator (251), an oil-immersed voltage regulator (252), an isolation transformer (253), a high-current control cabinet (254), and a non-partial discharge control cabinet (255) electrically connected to the control system (3).

4. The rail transit vehicle high-voltage device test system according to claim 2, characterized in that: The voltage source system (23) includes a pollution test transformer (6) electrically connected to the signal output end of the first voltage generator (4), and the signal output end of the pollution test transformer (6) is electrically connected to the signal input end of the climate simulation device (1); a temperature detection cabinet (7) for measuring the temperature of each voltage source in the voltage source system (23) is provided on one side of the pollution test transformer (6).

5. The rail transit vehicle high-voltage device test system according to claim 1, characterized in that: The aging test device (21) comprises an aging test box (211) and a safety test box (212); the signal output ends of the first voltage generator (4) and the second voltage generator (5) are electrically connected to the signal input end of the safety test box (212) via a first high-voltage bushing (8); and the signal output end of the safety test box (212) is electrically connected to the signal input end of the aging test box (211).

6. The rail transit vehicle high-voltage device test system according to claim 1, characterized in that: The climate simulation device (1) includes a cabin (11) and an auxiliary device (12) electrically connected to the cabin (11); a transition cabin (111) communicating with the cabin (11) is provided on one side of the cabin (11); a rain shower rack (112) for placing a test piece is provided inside the cabin (11); a high-speed camera (113) and a corona discharge tester (114) are provided inside the cabin (11); a signal output end of the high-speed camera (113) is electrically connected to a signal input end of the control system (2).

7. The rail transit vehicle high-voltage device test system according to claim 6, characterized in that: A second high-voltage bushing (9) is provided on the cabin (11), one end of the second high-voltage bushing (9) is electrically connected to the signal output ends of the first voltage generator (4) and the second voltage generator (5), and the other end of the second high-voltage bushing (9) extends into the cabin (11) and is electrically connected to the test piece.

8. The rail transit vehicle high-voltage device test system according to claim 7, characterized in that: The length of the second high-voltage bushing (9) located inside the cabin (11) is greater than the length of the second high-voltage bushing (9) located outside the cabin (11).

9. The rail transit vehicle high-voltage device test system according to claim 6, characterized in that: The cabin (11) includes a door (118), a sump (115) is provided at the bottom of the cabin (11), a drainage interface (116) is provided on the side wall of the cabin (11), one end of the drainage interface (116) extends into the interior of the cabin (11) and communicates with the sump (115), and the other end of the drainage interface (116) extends to the outside of the cabin (11) and communicates with the outside.

10. The rail transit vehicle high-voltage device test system according to claim 6, characterized in that: The auxiliary device (12) includes a PLC cabinet (121), a low-voltage power supply cabinet (122), a rain and ice covering device (123) electrically connected to the interior of the cabin (11), a humidifying hot mist unit (124), a refrigeration unit (125), an air heat exchanger (126), a water treatment device (128), and a plurality of vacuum pumps (127); a temperature rise busbar interface (117) for electrically connecting to the high-current temperature rise device (22) is provided on the side wall of the cabin (11).

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