Box-type self-driven advancing integrated high-voltage test platform and use method thereof

Abstract

The invention discloses a box-type self-driven advancing integrated high-voltage test platform and a use method thereof.The platform comprises a bearing platform body, a variable-frequency voltage-regulating power source, an exciting transformer, a resonance reactor, a capacitive voltage divider and a grading ring, and the bearing platform body is provided with a telescopic protection box body; when the resonance reactor and the capacitive voltage divider are in a horizontal state, the protection box covers the bearing platform body and seals the variable-frequency voltage-regulating power supply, the exciting transformer, the resonance reactor, the capacitive voltage divider and the grading ring, a moving device is arranged at the bottom of the bearing platform body, and the moving device can drive the bearing platform body to move. The device is small in advancing turning radius, low in space requirement and convenient to carry out tests in a relatively smaller site. The closed box body is adopted, so that good protection can be formed on test equipment in a non-test state, the test equipment is prevented from being affected by the outside, and the external insulation performance of the test equipment is protected; meanwhile, the platform can be conveniently unloaded, loaded and transported through a hydraulic system of the platform, and operation is convenient, fast and flexible.

Description

Technical Field

[0001] The present invention relates to the field of high voltage test equipment, and in particular to a box-type self-driven integrated high voltage test platform and a use method thereof. Background Art

[0002] The withstand voltage test of high-voltage electrical equipment insulation is one of the important tasks in the power industry. Especially in recent years, with the gradual construction and commissioning of UHV voltage level (AC 750kV and above) GIS equipment (including GIL), the test workload has steadily increased, the test difficulty has gradually increased, and new requirements have been put forward for the test equipment.

[0003] The existing test equipment uses multiple sections (sets) of independent high-voltage components (mainly resonant reactors and capacitive voltage dividers) to build in a building block style. Lifting equipment is required on site for assembly. Due to site and space limitations, lifting and installation are difficult, the workload is large, and a large number of people are required. The work is difficult and unsafe. The test cycle is long, usually more than two days, which affects the construction or emergency repair progress of the system. In addition, once the equipment is assembled and built, it is very difficult and troublesome to move or transfer, and disassembly and assembly requires a lot of manpower, material resources and time. If severe weather conditions occur during the test, it is basically impossible to take any protective measures for the test equipment itself (high-voltage part). Due to the large size and weight of the equipment, in order to facilitate lifting and loading and unloading, it is basically transported by open vehicles, and the protection of the equipment is poor.

[0004] The test equipment that uses high-voltage components, i.e., resonant reactors and capacitor voltage dividers, to install the whole inverted and erected program solves the problem of using lifting equipment for hoisting and manual installation on site, and significantly improves the test efficiency and safety. However, the bearing platform of this type of test equipment is a simple frame structure with an integral hydraulic lifting device, mainly to meet the requirements of transport and loading and unloading vehicles; fixed wheels are provided on both sides of the platform frame, and a small movement is required with the help of external power traction, which requires a large operating space. Because the platform has many fixed wheel pairs and a large length, the turning radius is large, and the overall turning, shifting or transfer operation is difficult. It is even difficult to operate in the equipment hall of some substations, and it is difficult to carry out tests. In addition, the simple frame platform has a low degree of integration, and all the main components of the complete set of series resonance test equipment cannot be integrated. There are still main test equipment components that need to be loaded and transported elsewhere, otherwise the length of the platform will be further increased, making transportation difficult. At the same time, the entire test platform is an open structure. It is difficult to effectively protect the test equipment carried during storage, transportation, test intervals and sudden harsh environmental conditions, which may cause the test equipment to be damaged, destroyed or performance degradation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a box-type self-propelled integrated high-voltage test platform and a method for using the same in view of the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0007] A box-type self-propelled integrated high-voltage test platform includes a bearing unit, a high-voltage test unit and a high-voltage test platform angle adjustment unit. The bearing unit is used to bear the high-voltage test unit. The high-voltage test unit is used to perform a withstand voltage test on a device to be tested. The high-voltage test platform angle adjustment unit is used to adjust the device angle of the high-voltage test unit so that the distance between the high-voltage test unit and the device to be tested is adjustable. The device protection unit is also included. The device protection unit is retractable. When the device protection unit is in an extended state, it can cover the high-voltage test unit. When the device protection unit is in a retracted state, the high-voltage test unit is exposed.

[0008] To optimize the technical solution, the present invention is further improved as follows:

[0009] The above-mentioned bearing unit includes a bearing platform body, a high-voltage test unit includes a variable frequency voltage regulating power supply, an excitation transformer, a resonant inductor, a capacitor voltage divider and a voltage grading ring, a high-voltage test platform angle adjustment unit includes a flip bottom plate, and an equipment protection unit includes a protection box. The variable frequency voltage regulating power supply, the excitation transformer, the resonant inductor and the capacitor voltage divider are connected in sequence. The variable frequency voltage regulating power supply and the excitation transformer are installed at the rear end of the bearing platform body, the flip bottom plate is arranged at the front end of the bearing platform body, one end of the resonant inductor and the capacitor voltage divider are installed on the flip bottom plate, and the resonant inductor and the capacitor voltage divider are installed on the flip bottom plate. The other end is connected to the voltage-equalizing ring, one end of the flip base plate is hinged with the bearing platform body, and the flip base plate rotates relative to the bearing platform body so that the resonant inductor and the capacitor voltage divider can be switched between vertical and horizontal states. A telescopic protective box is provided on the bearing platform body. When the resonant inductor and the capacitor voltage divider are in a horizontal state, the protective box is covered on the bearing platform body to seal the variable frequency voltage-regulating power supply, the excitation transformer, the resonant inductor, the capacitor voltage divider and the voltage-equalizing ring. A moving device is provided at the bottom of the bearing platform body, and the moving device can drive the bearing platform body to move.

[0010] The above-mentioned protective box body comprises a plurality of box body units. The box body units are in a "冂"-shaped structure that penetrates from front to back. Among them, a sealing plate for closing the rear-end opening is provided on the box body unit located at the rearmost side. The main body of the carrying platform is provided with a number of box body track pairs equal to the number of box body units. Each box body track pair includes two box body tracks, and these two box body tracks are respectively arranged on both sides of the main body of the carrying platform. The rear end of each box body track pair extends to the rear end of the main body of the carrying platform. The lengths of the box body track pairs are different and are shortened arithmetically from outside to inside. Among them, the front end of the outermost box body track pair extends to the front part of the main body of the carrying platform. Both ends of each box body unit are slidably arranged on the corresponding box body track pair. When all the box body units slide to the front ends of their corresponding box body track pairs, the protective box body can cover the variable frequency and voltage regulating power supply, the excitation transformer, the resonance reactor, the capacitor voltage divider and the grading ring. When all the box body units slide to the rear ends of their corresponding box body track pairs, the variable frequency and voltage regulating power supply, the excitation transformer, the resonance reactor, the capacitor voltage divider and the grading ring are all exposed.

[0011] A swivel base is provided at the front end of the above-mentioned main body of the carrying platform, and one end of the flipping bottom plate is hinged to the swivel base through a rotating shaft.

[0012] A flipping bracket is provided on the above-mentioned flipping bottom plate. The front end of the flipping bracket is hinged to the flipping bottom plate. A lifting hydraulic cylinder is installed on the main body of the carrying platform. The hydraulic shaft of the lifting hydraulic cylinder is connected to the flipping bracket. The lifting hydraulic cylinder is used to push the flipping bracket and the flipping bottom plate to rotate around the swivel base.

[0013] The above-mentioned moving device is a plurality of sets of wheels arranged at the bottom of the main body of the carrying platform. The wheels include electric wheels for providing driving force, universal wheels for controlling direction and support wheels for providing support. The electric wheels are connected with wheel drive motors.

[0014] A storage battery is arranged inside the above-mentioned main body of the carrying platform. The storage battery is used to charge the wheel drive motors. A storage battery charger is installed on the main body of the carrying platform. The storage battery charger can be connected to an external power supply to charge the storage battery.

[0015] Support leg structures are installed on both sides of the above-mentioned main body of the carrying platform. The support leg structures include horizontal support leg hydraulic cylinders, vertical lifting support leg hydraulic cylinders and support feet. The horizontal support leg hydraulic cylinders are installed on the main body of the carrying platform. The hydraulic shafts of the horizontal support leg hydraulic cylinders are connected to the vertical lifting support leg hydraulic cylinders. The horizontal support leg hydraulic cylinders are used to push the vertical lifting support leg hydraulic cylinders to move horizontally. The hydraulic shafts of the vertical lifting support leg hydraulic cylinders are connected to the support feet. The vertical lifting support leg hydraulic cylinders are used to push the support feet to move up and down. When the support feet move to the lower ends of their strokes, the lower ends of the support feet can contact the ground to lift the main body of the carrying platform.

[0016] The front and rear ends of the above-mentioned load-bearing platform body are provided with safety touch edges, and the front and rear ends of the load-bearing platform body are also provided with obstacle avoidance radars, which are used to warn whether there are obstacles at the front or rear end of the load-bearing platform body; a distribution box, a generator, a hydraulic workstation and a touch screen are provided on the load-bearing platform body, the generator is connected to the distribution box, the distribution box is connected to and supplies power to the vertical lifting hydraulic cylinder of the leg support, the horizontal hydraulic cylinder of the leg support and the lifting hydraulic cylinder, the hydraulic workstation is connected to and supplies hydraulic oil to the vertical lifting hydraulic cylinder of the leg support, the horizontal hydraulic cylinder of the leg support and the lifting hydraulic cylinder, the touch screen is connected to the distribution box, the touch screen is used to receive input commands and control the operation of the distribution box according to the commands; the resonant inductor and the capacitor voltage divider are arranged in parallel, the resonant inductor and the capacitor voltage divider are fixedly connected by a clamp, the clamp is connected to a clamp hydraulic cylinder for adjusting the tightness of the clamp, and the equalizing ring is an inflatable ring.

[0017] A method for using a box-type self-propelled integrated high-voltage test platform, using the above-mentioned box-type self-propelled integrated high-voltage test platform, specifically includes the following steps:

[0018] Step 1: The load-bearing platform body is placed on the test vehicle and driven into the test site. After it is moved to the predetermined position below the equipment to be tested, the support leg structure is operated, and the support leg horizontal hydraulic cylinder and the support leg vertical lifting hydraulic cylinder cooperate to support the support leg on the ground;

[0019] Step 2: Control the protective box to retract, so that the box unit slides on the box track pair, and each box unit slides to the rear end of the bearing platform body, thereby exposing the high-voltage test unit;

[0020] Step 3: Drive the lifting hydraulic cylinder to operate, control the flip bracket and flip base to rotate around the rotating seat, and turn the resonant inductor and capacitor voltage divider from horizontal to vertical state.

[0021] Step 4: Inflate the grading ring to form a ring structure located at the top of the resonant reactor and the capacitive voltage divider;

[0022] Step 5: Conduct a withstand voltage test on the equipment to be tested;

[0023] Step 6: After the experiment, deflate the pressure equalizing ring;

[0024] Step 7: Drive the lifting hydraulic cylinder to operate, control the flip bracket and flip base to rotate in the opposite direction around the rotating seat, and turn the resonant inductor and capacitor voltage divider from vertical to horizontal.

[0025] Step 8: Each box unit slides to the front end of its travel, covers the high-voltage test unit, retracts the support leg structure, and the test vehicle drives out of the test site.

[0026] The present invention has the following advantages:

[0027] 1. The present invention integrates all components of a complete set of high-voltage resonance test equipment into one test platform. No lifting device or manpower is required on site to assemble and install the test equipment. The test equipment can be quickly and conveniently arranged, deployed, retracted, and returned to its original position.

[0028] 2. The test platform of the present invention relies on its own power to drive the wheels, and can turn, rotate on the spot, shift or transfer conveniently and flexibly in the test station or equipment hall (such as the converter valve hall) without the need for an external traction (power) device. Therefore, the platform has a small turning radius and low space requirements, which is convenient for conducting tests in relatively smaller venues.

[0029] 3. The present invention adopts a closed box, which can provide good protection for the test equipment itself when it is not in the test state, avoid it from external influences and damage, and protect its external insulation performance; at the same time, the platform relies on its own hydraulic system to facilitate unloading and loading for transportation without using other lifting devices, and the operation is convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the protective box of the present invention when it is unfolded;

[0031] Figure 2 yes Figure 1 A top view of

[0032] Figure 3 yes Figure 1 Right view of;

[0033] Figure 4 It is a structural diagram of the integrated high-voltage test platform after removing the protective box;

[0034] Figure 5 Yes Yes Figure 4 A top view of

[0035] Figure 6 yes Figure 4 Left view of

[0036] Figure 7 It is a schematic diagram of the structure of the protective box after shrinkage of the present invention;

[0037] Figure 8 Yes Yes Figure 7 A top view of

[0038] Fig. 9 yes Figure 7 Right view of;

[0039] Fig.10 It is a schematic diagram of the lifting hydraulic cylinder to rotate the resonant reactor, the capacitor voltage divider and the voltage equalizing ring to a vertical state, but the flip bracket is still in a horizontal state;

[0040] Fig.11 It is a schematic diagram of lifting the hydraulic cylinder to turn the resonant reactor, the capacitive voltage divider, the voltage equalizing ring and the flip bracket to a vertical state;

[0041] Fig.12 It is a schematic diagram of the transport state of the integrated high-voltage test platform of the present invention.

[0042] The accompanying drawings in the figure are marked as: bearing platform body 1, variable frequency voltage regulating power supply 2, excitation transformer 3, resonant inductor 4, capacitive voltage divider 5, equalizing ring 6, protective box 7, flip bracket 8, flip base plate 9, distribution box 10, generator 11, wheels 12, touch screen 13, obstacle avoidance radar 14, safety touch edge 15, lifting hydraulic cylinder 16, leg vertical lifting hydraulic cylinder 17, leg horizontal hydraulic cylinder 18, clamp 19, battery charger 20, hydraulic workstation 21, rotating shaft 22, box track 23. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0044] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0045] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0046] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" / "several" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0047] like Figures 1 to 12 As shown, a box-type self-driving integrated high-voltage test platform, an embodiment of the present invention includes a complete set of high-voltage test equipment and a self-driving and moving bearing platform body 1 installed with the complete set of test equipment; the complete set of high-voltage test equipment is a complete set of variable frequency series resonance test equipment with complete functions for generating AC high-voltage test voltage, and the rated output test voltage generated by resonance can be as high as 1000-1300kV, including a variable frequency voltage regulating power supply 2, an excitation transformer 3, a resonant inductor 4, a capacitive voltage divider 5 and a voltage equalizing ring 6, etc.; a slidable closed protective box 7, a complete set of hydraulic mechanism systems, a flip bracket 8 and a flip base plate 9 for lifting the high-voltage components of the complete set of test equipment, a power distribution system and a self-contained power supply, etc. are installed on the bearing platform body 1.

[0048] The load-bearing platform body 1 adopts a frame or box-type structure design. Except for the reserved structure or grooves, holes, holes, bosses, etc. required for installation, the overall surface is in the form of a flat plate, which is convenient for boarding and equipment installation. The main load-bearing components of the load-bearing platform body 1 are made of carbon structural steel or high-strength alloy steel to ensure structural strength and load-bearing capacity. When the rated output voltage of the test platform is 1000-1300kV, the platform length is about 12 meters, the width is about 3 meters, and the load capacity can reach more than 30 tons, which can meet the general requirements of the national regulations on the management of overloaded transport vehicles on highways.

[0049] The bottom of the load-bearing platform is equipped with multiple sets of wheels 12, including universal electric wheels and support wheels, to drive the platform to move and maintain balance. In order to control the height of the load-bearing platform (the distance from the table to the ground is about 50 to 60 cm), small-diameter wheels 12 are used, and the upper recess is embedded in the platform body for installation, so that the platform has a ground clearance of only about 10 cm. The wheels 12 used are metal wheels 12 coated with polyurethane material, which have excellent performance and are tough enough to protect the road surface. The number of wheels 12 used is 6 to 16 pairs, depending on the length and load of the platform. The electric wheels are power wheels, which are powered by the rechargeable battery built into the platform, and can also be powered by an external power supply. The battery capacity is not less than 100Ah, and the platform can be driven to travel a distance of not less than 2km; a matching battery charger 20 is installed on the platform, which can be charged in time after the platform is connected to the power supply, or it can be charged by an external 220V AC power supply alone. The platform is equipped with a multifunctional touch screen 13 for status monitoring, information prompts, protection alarms, etc.; obstacle avoidance radars 14 and safety touch edges 15 for anti-collision protection are installed at both ends of the platform. Once triggered, the platform will immediately issue an alarm or stop moving to avoid serious collisions during driving. The obstacle avoidance radar 14 function can be turned on or off, and the detection range can also be set through software. The platform's movement, turning and other operations are controlled by wireless remote control and wire control handle, which is highly practical. Because it adopts universal wheel drive, the platform can travel or move in any direction, and can rotate in situ along the center position of the driving wheel group. It is extremely flexible to turn around and turn. Therefore, compared with the test vehicle or test platform device towed by an external power device, the present invention can achieve a smaller turning radius of operation, better passability, lower space requirements for the test site, more flexible and convenient operation, and stronger on-site applicability.

[0050] The slidable closed protective box 7 installed on the load-bearing platform body 1 is a segmented nesting design. When fully unfolded, the present invention presents a relatively closed box structure as a whole, with doors at both ends. The box is divided into 3 to 5 sections, depending on the length of the platform and the high-voltage components of the test equipment. Among them, the section located at the variable frequency voltage regulating power supply 2 is a fixed box, which is installed on the load-bearing platform, does not slide, and has doors on the side. The bottoms of both sides of the other sections are installed on sliding tracks, and the sliding tracks are fixedly installed on the load-bearing platform. In the test state, the sliding box slides toward the fixed section box, in a stacked nested state, so that the platform can free up movement space for the high-voltage components to be lifted and erected, and ensure the necessary high-voltage insulation space distance.

[0051] The complete set of high-voltage test equipment is a complete set of variable frequency series resonance test equipment with complete resonant boosting function, which is controlled by remote control box, and mainly includes variable frequency voltage regulating power supply 2, excitation transformer 3, resonant reactor 4, capacitor voltage divider 5 and voltage equalizing ring 6 and remote control box, etc. Among them, variable frequency voltage regulating power supply 2 and excitation transformer 3 are conventional mature design products; both are installed on the end of the bearing platform body 1 away from the flip bottom plate 9; the remote control box is a portable handheld component; the resonant reactor 4 and the capacitor voltage divider 5 are both single-section design structures, the former is liquid-immersed or gas-insulated, and the latter is liquid-immersed insulated; the lower ends of the two are fixedly installed on the same flip bottom plate 9, the upper ends are fixedly connected, and share an inflatable and retractable voltage equalizing ring 6 to form a high-voltage component, which is placed horizontally on the flip bracket 8 during storage and transportation; the resonant reactor 4 and the capacitor voltage divider 5 have the same rated voltage, and the resonant frequency of the two is within 300Hz, ensuring that the variable frequency power supply can generate a resonant response when excited within the output rated frequency range, which is convenient for the system to self-check in the air.

[0052] The flip bracket 8 and flip base plate 9 on the load-bearing platform body 1 can rotate about 90° along the common rotation axis 22, and can rotate independently or rotate together after being fixed by an axle pin. The rotation axis 22 is installed in a special ear seat, and the ear seat is fixed on the load-bearing platform. One end of the lifting hydraulic cylinder 16 for lifting the high-voltage component is installed on both sides of the flip bracket 8, and a clamp for fixing the resonant inductor 4 is installed in the middle and upper part of the flip bracket 8, and its opening and closing is controlled by the clamp hydraulic cylinder.

[0053] A fully functional and independent hydraulic mechanism system is installed on the bearing platform, including a lifting hydraulic cylinder 16 for lifting the high-pressure component, a leg vertical lifting hydraulic cylinder 17 for controlling the overall lifting of the platform, a horizontal hydraulic cylinder for controlling the horizontal extension and retraction of the legs, and a clamp hydraulic cylinder and hydraulic workstation 21 for controlling the opening and closing of the clamp of the resonant inductor 4, a hydraulic pump (driven by an electric motor), pipelines, valves and control devices (including local and remote control), etc.

[0054] One end of the lifting hydraulic cylinder 16 is installed on the flip bracket 8, and the other end is installed on the bearing platform. It can be installed in a sinking manner below the table. Through the lifting hydraulic cylinder 16, the flip bracket 8 and the flip bracket 8 fixedly connected by the axle pin are pushed to rotate about 90 degrees, so that the high-voltage component placed thereon is erected from the horizontal lying state of storage and transportation to the vertical test state. After that, the fixed axle pin between the flip bracket 8 and the flip bottom plate 9 is removed, and the flip bracket 8 is retracted to the horizontal storage and transportation state by the lifting hydraulic cylinder 16, and the flip bottom plate 9 in the horizontal state at this time is locked and fixed with the bearing platform to prevent tipping, that is, the on-site arrangement preparation of the high-voltage component is completed. Before that, the pressure equalizing ring 6 needs to be inflated.

[0055] There are 2 to 4 sets of hydraulic support legs on both sides of the length direction of the load-bearing platform, which are used to lift the test platform as a whole to a certain height for transportation by loading and unloading vehicles, or to level and support the test platform. The hydraulic support legs do not protrude from the periphery of the load-bearing platform in the transportation state. The support legs can be extended about 50cm beyond the periphery of the load-bearing platform through the horizontal hydraulic cylinder, which expands the support range of the support legs and improves the stability of the support, and facilitates the movement and position adjustment of the transport vehicle during loading and unloading. The vertical lifting hydraulic cylinder can be synchronously lifted and lowered as a whole, or each hydraulic cylinder can independently control the extension and retraction of the support legs. The entire platform is lifted vertically to a height of 1 to 1.5m to meet the loading requirements of conventional flatbed transport vehicles.

[0056] The clamp hydraulic cylinder is installed in the middle and upper part of the flip bracket 8, and is used to clamp and stabilize the high-pressure component.

[0057] The hydraulic system adopts a three-phase three-wire 380V (50Hz) working power supply and can use the platform's own power generator 11 to work. It is equipped with two sets of remote and local control devices to facilitate on-site operation and use.

[0058] The load-bearing platform is equipped with an independent and complete power distribution system, which can be connected to a large-capacity three-phase 380V main power supply and output an isolated single-phase 220V power supply; it can also be connected to a small-capacity auxiliary power supply (which can be a self-contained power generator 11), which can input three-phase 380V or single-phase 220V. The power distribution system is equipped with a protection device, multiple channels, multiple capacity outputs and redundant backup, which is convenient for safe power supply to various electrical equipment on site.

[0059] The self-contained power supply of the load-bearing platform includes a fuel generator 11 and a built-in battery for driving the platform. The fuel generator 11 can output 380V power in three-phase four-wire mode, or can output 220V power in single phase mode. It is mainly used to power the hydraulic system of the platform before the system power supply is in place or after it is removed, or to charge the built-in battery of the platform, so that the functions of the entire platform, except the insulation test equipment, can be relatively independently operated and convenient for on-site use.

[0060] In addition, the design of the box-type self-propelled mobile carrying platform of the present invention is universal, and the accommodating space of the platform can be large enough. The complete set of high-voltage test equipment installed thereon, in addition to the series resonance test device of this embodiment, can also be other types of high-voltage test equipment required for field tests, such as impulse voltage generators, DC high voltage generators, industrial frequency high voltage test devices, etc.

[0061] The present invention also provides a method for using a box-type self-propelled integrated high-voltage test platform, which specifically includes the following steps:

[0062] Step 1: The load-bearing platform body 1 is placed on the test vehicle and driven into the test site. After it is moved to the predetermined position below the equipment to be tested, the support leg structure is operated, and the support leg horizontal hydraulic cylinder 18 and the support leg vertical lifting hydraulic cylinder 17 cooperate to support the support legs on the ground;

[0063] Step 2: Control the protective box 7 to retract, so that the box units slide on the box rails, and each box unit slides to the rear end of the bearing platform body 1, thereby exposing the high-voltage test unit;

[0064] Step 3: Drive the lifting hydraulic cylinder 16 to operate, control the flip bracket 8 and the flip base plate 9 to rotate around the rotating seat, and turn the resonant inductor 4 and the capacitive voltage divider 5 from the horizontal state to the vertical state.

[0065] Step 4: expand the grading ring 6 by inflating to form a ring structure located at the top of the resonant reactor 4 and the capacitive voltage divider 5;

[0066] Step 5: Conduct a withstand voltage test on the equipment to be tested;

[0067] Step 6: After the experiment is over, deflate the pressure equalizing ring 6;

[0068] Step 7: Drive the lifting hydraulic cylinder 16 to operate, control the flip bracket 8 and the flip base plate 9 to rotate in the opposite direction around the rotating seat, and turn the resonant inductor 4 and the capacitive voltage divider 5 from the vertical state back to the horizontal state.

[0069] Step 8: Each box unit slides to the front end of its travel, covers the high-voltage test unit, retracts the support leg structure, and the test vehicle drives out of the test site.

[0070] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A box-type self-propelled integrated high-voltage test platform, comprising a bearing unit, a high-voltage test unit and a high-voltage test platform angle adjustment unit, wherein the bearing unit is used to bear the high-voltage test unit, and is characterized by: The high-voltage test unit is used to perform a withstand voltage test on the equipment to be tested. The high-voltage test platform angle adjustment unit is used to adjust the equipment angle of the high-voltage test unit so that the distance between the high-voltage test unit and the equipment to be tested can be adjusted. The high-voltage test unit also includes an equipment protection unit. The equipment protection unit is retractable. When the equipment protection unit is in an extended state, it can cover the high-voltage test unit. When the equipment protection unit is in a retracted state, the high-voltage test unit is exposed.

2. A box-type self-propelled integrated high-voltage test platform according to claim 1, characterized in that: The bearing unit comprises a bearing platform body (1), the high-voltage test unit comprises a variable frequency voltage regulating power supply (2), an excitation transformer (3), a resonant inductor (4), a capacitor voltage divider (5) and a voltage grading ring (6), the high-voltage test platform angle adjustment unit comprises a flip bottom plate (9), the equipment protection unit comprises a protection box (7), the variable frequency voltage regulating power supply (2), the excitation transformer (3), the resonant inductor (4) and the capacitor voltage divider (5) are connected in sequence, the variable frequency voltage regulating power supply (2) and the excitation transformer (3) are mounted at the rear end of the bearing platform body (1), the flip bottom plate (9) is arranged at the front end of the bearing platform body (1), one end of the resonant inductor (4) and the capacitor voltage divider (5) are mounted on the flip bottom plate (9), and the resonant inductor (4) and the capacitor voltage divider (5) are connected to the bearing platform body (1) in sequence. The other end of the capacitor voltage divider (5) is connected to the voltage-equalizing ring (6), and one end of the flip bottom plate (9) is hingedly matched with the bearing platform body (1). The flip bottom plate (9) rotates relative to the bearing platform body (1) so that the resonant inductor (4) and the capacitor voltage divider (5) can be switched between a vertical state and a horizontal state. A telescopic protective box (7) is provided on the bearing platform body (1). When the resonant inductor (4) and the capacitor voltage divider (5) are in a horizontal state, the protective box (7) covers the bearing platform body (1) to seal the variable frequency voltage regulating power supply (2), the excitation transformer (3), the resonant inductor (4), the capacitor voltage divider (5) and the voltage-equalizing ring (6). A moving device is provided at the bottom of the bearing platform body (1), and the moving device can drive the bearing platform body (1) to move.

3. The box-type self-propelled integrated high-voltage test platform according to claim 2 is characterized by: The described protective housing (7) includes a number of housing units. The housing units are in a "冂"-shaped structure that penetrates from front to back. Among them, the last housing unit on the rear side is provided with a sealing plate for closing the rear-end opening. The carrier platform body (1) is provided with a number of pairs of housing tracks equal to the number of housing units. Each pair of housing tracks includes two housing tracks (23). These two housing tracks (23) are respectively arranged on both sides of the carrier platform body (1). The rear end of each pair of housing tracks extends to the rear end of the carrier platform body (1). The lengths of each pair of housing tracks are different and decrease arithmetically from outside to inside. Among them, the front end of the outermost pair of housing tracks extends to the front part of the carrier platform body (1). Both ends of each housing unit are slidably arranged on the corresponding pair of housing tracks. When each housing unit slides to the front end of its corresponding pair of housing tracks, the protective housing (7) can cover the variable-frequency and variable-voltage power supply (2), the excitation transformer (3), the resonant reactor (4), the capacitor voltage divider (5), and the grading ring (6). When each housing unit slides to the rear end of its corresponding pair of housing tracks, the variable-frequency and variable-voltage power supply (2), the excitation transformer (3), the resonant reactor (4), the capacitor voltage divider (5), and the grading ring (6) are all exposed.

4. The box-type self-propelled integrated high-voltage test platform according to claim 3 is characterized by: A swivel base is provided at the front end of the carrier platform body (1). One end of the flipping bottom plate (9) is hinged to the swivel base through a rotating shaft (22).

5. The box-type self-propelled integrated high-voltage test platform according to claim 3 is characterized by: A flipping bracket (8) is provided on the flipping bottom plate (9). The front end of the flipping bracket (8) is hinged to the flipping bottom plate (9). A lifting hydraulic cylinder (16) is installed on the carrier platform body (1). The hydraulic shaft of the lifting hydraulic cylinder (16) is connected to the flipping bracket (8). The lifting hydraulic cylinder (16) is used to push the flipping bracket (8) and the flipping bottom plate (9) to rotate around the swivel base.

6. The box-type self-propelled integrated high-voltage test platform according to claim 3 is characterized by: The moving device is multiple groups of wheels (12) arranged at the bottom of the carrier platform body (1). The wheels include electric wheels for providing driving force, universal wheels for controlling direction, and support wheels for providing support. The electric wheels are connected with wheel drive motors.

7. The box-type self-propelled integrated high-voltage test platform according to claim 3 is characterized by: A storage battery is arranged inside the carrier platform body (1). The storage battery is used to charge the wheel drive motors. A storage battery charger (20) is installed on the carrier platform body (1). The storage battery charger (20) can be connected to an external power supply to charge the storage battery.

8. The box-type self-propelled integrated high-voltage test platform according to claim 7 is characterized by: Support leg structures are installed on both sides of the supporting platform body (1), and the supporting leg structure includes a horizontal hydraulic cylinder (18) for supporting legs, a vertical lifting hydraulic cylinder (17) for supporting legs, and a supporting foot. The horizontal hydraulic cylinder (18) for supporting legs is installed on the supporting platform body (1), and the hydraulic shaft of the horizontal hydraulic cylinder (18) for supporting legs is connected to the vertical lifting hydraulic cylinder (17). The horizontal hydraulic cylinder (18) for supporting legs is used to push the vertical lifting hydraulic cylinder (17) for supporting legs to move horizontally. The hydraulic shaft of the vertical lifting hydraulic cylinder (17) for supporting legs is connected to the supporting foot. The vertical lifting hydraulic cylinder (17) for supporting legs is used to push the supporting foot to move up and down. When the supporting foot moves to the lower end of its own stroke, the lower end of the supporting foot can contact the ground to prop up the supporting platform body (1).

9. The box-type self-propelled integrated high-voltage test platform according to claim 8 is characterized by: The front and rear ends of the load-bearing platform body (1) are provided with safety touch edges (15), and the front and rear ends of the load-bearing platform body (1) are also provided with obstacle avoidance radars (14), and the obstacle avoidance radars (14) are used to warn whether there are obstacles at the front or rear ends of the load-bearing platform body (1); the load-bearing platform body (1) is provided with a distribution box (10), a generator (11), a hydraulic workstation (21) and a touch screen (13), the generator (11) is connected to the distribution box (10), and the distribution box (10) is connected to and supplies power to the leg vertical lifting hydraulic cylinder (17), the leg horizontal hydraulic cylinder (18) and the lifting hydraulic cylinder (16), and the The hydraulic workstation (21) is connected to the leg vertical lifting hydraulic cylinder (17), the leg horizontal hydraulic cylinder (18) and the lifting hydraulic cylinder (16) and supplies hydraulic oil thereto; the touch screen (13) is connected to the distribution box (10); the touch screen (13) is used to receive input commands and control the operation of the distribution box (10) according to the commands; the resonant inductor (4) and the capacitive voltage divider (5) are arranged in parallel; the resonant inductor (4) and the capacitive voltage divider (5) are fixedly connected via a clamp (19); the clamp (19) is connected to a clamp hydraulic cylinder for adjusting the tightness of the clamp (19); the pressure equalizing ring (6) is an inflatable ring.

10. A method for using a box-type self-propelled integrated high-voltage test platform, characterized in that: The application of the box-type self-propelled integrated high-voltage test platform as claimed in claim 9 specifically includes the following steps: Step 1: The load-bearing platform body (1) is placed on the test vehicle and driven into the test site. After it is moved to a predetermined position below the device to be tested, the support leg structure is operated, and the support leg horizontal hydraulic cylinder (18) and the support leg vertical lifting hydraulic cylinder (17) cooperate to support the support legs on the ground; Step 2: Control the protective box (7) to retract, so that the box units slide on the box rails, and each box unit slides to the rear end of the bearing platform body (1), thereby exposing the high-voltage test unit; Step 3: drive the lifting hydraulic cylinder (16) to operate, control the flip bracket (8) and the flip base plate (9) to rotate around the rotating seat, and turn the resonant inductor (4) and the capacitive voltage divider (5) from the horizontal state to the vertical state. Step 4: expand the voltage-equalizing ring (6) by inflating air to form a ring structure located at the top of the resonant reactor (4) and the capacitive voltage divider (5); Step 5: Conduct a withstand voltage test on the equipment to be tested; Step 6: After the experiment is over, the pressure equalizing ring (6) is deflated; Step 7: Drive the lifting hydraulic cylinder (16) to operate, control the flip bracket (8) and the flip base plate (9) to rotate in the opposite direction around the rotating seat, and turn the resonant inductor (4) and the capacitive voltage divider (5) from the vertical state back to the horizontal state. Step 8. Each box unit slides to the front end of its travel, covers the high-voltage test unit, retracts the support leg structure, and the test vehicle drives out of the test site.

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