A smart grid cable buffer layer multi-parameter electrical performance detection test platform

Abstract

The application discloses a kind of intelligent power grid cable buffer layer multi-parameter electrical performance detection test platform, including buffer layer test unit, buffer layer test unit includes shell cover, shell cover left and right ends are respectively equipped with transverse telescopic cylinder one, telescopic cylinder one output end is equipped with support one, support one upper end is equipped with clamping seat, clamping seat is equipped with front and rear setting side clamping plate, side clamping plate is equipped with buffer layer between, buffer layer lower end is connected with lower pole piece one, shell cover is fixed with the lower pole piece two of sliding through clamping seat, lower pole piece two and lower pole piece one sliding contact, shell cover rear side is equipped with vertical telescopic cylinder two, telescopic cylinder two output end is equipped with support two, support two is installed on column rod one, column rod one is installed on round electrode, shell cover top is also equipped with upper pole rod connected with round electrode, upper pole rod is connected on series line.Electrical performance detection test under the condition of simulating buffer layer multiple conditions, obtain more real and comprehensive test data, test efficiency is more intelligent and efficient.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power cable insulation characteristic testing technology, specifically to a multi-parameter electrical performance testing platform for smart grid cable buffer layers. Background Technology

[0002] The establishment of a test platform for electrical performance testing of power grid cable buffer layers under different conditions is fundamental to buffer layer performance testing and the establishment of multi-parameter models. To achieve real-time detection of the volume resistivity, surface resistivity, and dielectric constant of the buffer layer under different temperature, humidity, and pressure conditions, the test platform needs to be placed in a controlled environment that does not affect other components, thus meeting the requirements for test duration and accuracy.

[0003] After the cable is installed, it often exhibits a curved structure due to gravity, and under these conditions, it is susceptible to failure due to external environmental conditions. Currently, existing performance testing methods for the buffer layer are insufficient to effectively simulate the actual electrical performance parameters of the cable buffer layer under real-world conditions.

[0004] Therefore, it is necessary to provide a multi-parameter electrical performance testing platform for smart grid cable buffer layers to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-parameter electrical performance testing platform for a smart grid cable buffer layer, comprising a buffer layer testing unit, wherein the buffer layer testing unit includes a housing, and a horizontal telescopic cylinder is respectively installed on the left and right ends of the housing. A support is installed on the output end of the telescopic cylinder, and a clamp is installed on the upper end of the support. Side clamps are installed between the left and right side clamps and arranged in a front and rear manner. A buffer layer is installed between the front and rear side clamps. A lower electrode plate is connected to the lower end of the buffer layer. A lower electrode plate 2 is fixed on the housing and slides through the clamp, and the lower electrode plate 2 is in sliding contact with the lower electrode plate 1. A vertical telescopic cylinder 2 is installed on the rear side of the housing, and a support is installed on the output end of the telescopic cylinder 2. A column rod is installed on the support rod, and a circular electrode is installed on the column rod. An upper electrode rod connected to the circular electrode is also installed above the housing and connected to a series line.

[0006] Furthermore, as a preferred embodiment, the telescopic cylinders are arranged at equal intervals along the buffer layer in an odd number.

[0007] Furthermore, as a preferred embodiment, a pressure roller 1 corresponding to the upper end of the side clamping plate is installed on the first column rod, a vertical telescopic cylinder 3 is installed on the second support, a third support is installed at the lower end of the third telescopic cylinder, a second column rod is installed on the third support, and a second pressure roller 2 corresponding to the lower end of the side clamping plate is installed on the second column rod.

[0008] Furthermore, as a preferred embodiment, the support is provided with a tension sensor for detecting the lateral tension of the support and the buffer layer, the column is provided with a pressure sensor for detecting the pressure of the pressure roller pressing down on the buffer layer, and the telescopic cylinder is provided with a pressure sensor for detecting the clamping pressure on the buffer layer.

[0009] Furthermore, as a preferred embodiment, the side plate is also provided with a water guide pipe that contacts the side end of the buffer layer. The end of the water guide pipe near the buffer layer is provided with a water guide hole, and the water guide pipe is connected to the water control tank through a conduit.

[0010] Furthermore, as a preferred embodiment, the end face of the water guide pipe near the buffer layer is also provided with a water guide groove.

[0011] Furthermore, as a preferred embodiment, the upper electrode rod penetrates the upper end face of the housing, the upper end of the upper electrode rod is connected to the housing via a tension spring, and the lower end of the upper electrode rod contacts the upper end of the circular electrode.

[0012] Furthermore, as a preferred embodiment, the lower electrode plate 2 is grounded through a wire, the series line is connected to the output terminal of the power frequency test transformer, a fuse is connected between the output terminal of the power frequency test transformer and the series line, the input terminal of the power frequency test transformer is connected to the output terminal of the voltage regulator, the input terminal of the voltage regulator is connected to the V mains power, a voltmeter is connected in parallel across both ends of the buffer layer test unit, and an ammeter is connected in series on the grounding wire of the buffer layer test unit.

[0013] Furthermore, as a preferred embodiment, the housing is also provided with a humidity regulator for controlling the humidity of the housing cavity and a temperature regulator for controlling the temperature.

[0014] Compared with the prior art, the present invention provides a multi-parameter electrical performance testing platform for smart grid cable buffer layers, which has the following advantages:

[0015] In this invention, the setting and arrangement of multiple telescopic cylinders II, as well as the installation and processing of the buffer layer, enable multi-parameter electrical performance testing when the buffer layer is deformed in an arc, thereby simulating and obtaining more realistic electrical performance testing data. Furthermore, through the control program of the telescopic cylinders II, the arc shape of the buffer layer with different radii can be simulated intelligently and efficiently.

[0016] In this invention, a second pressure roller is used to lift the buffer layer, which can simulate the different pressure conditions on the buffer layer and realize the electrical performance test of the buffer layer under different pressure conditions.

[0017] In this invention, structural designs such as water pipes are used to simulate electrical performance testing under conditions of water resistance in the buffer layer. Temperature and humidity controllers are used to simulate electrical performance testing of the buffer layer under different temperature and humidity conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the testing platform structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the circular electrode structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the buffer layer of the present invention;

[0021] Figure 4 This is a schematic diagram of the clamping structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the water pipe structure of the present invention;

[0023] Figure 6 This is the schematic diagram of the power frequency voltage circuit of the present invention;

[0024] Figure 7 This is a simulated embodiment of the arc-shaped buffer layer of the present invention;

[0025] In the diagram: 1. Voltage regulator; 2. Power frequency test transformer; 3. Fuse; 4. Voltmeter; 5. Buffer layer test unit; 6. Ammeter; 7. Water pipe; 8. Water inlet; 9. Water channel; 10. Conduit; 11. Water control tank; 12. Temperature controller; 13. Humidity controller; 51. Housing; 52. Telescopic cylinder one; 53. Support one; 54. Clamp; 55. Lower electrode one; 56. Buffer layer; 57. 58. Lower electrode plate 2; 59. Upper electrode rod; 50. Series wire; 510. Tension spring; 511. Telescopic cylinder 2; 512. Support 2; 513. Column rod 1; 514. Circular electrode; 515. Pressure sensor 1; 516. Pressure roller 1; 517. Support 3; 518. Column rod 2; 519. Pressure roller 2; 520. Telescopic cylinder 3; 521. Pressure sensor 2; 531. Tension sensor; 541. Side clamp plate. Detailed Implementation

[0026] Reference Figures 1-7This invention provides a technical solution: a multi-parameter electrical performance testing platform for a smart grid cable buffer layer, comprising a buffer layer testing unit 5. The buffer layer testing unit 5 includes a housing 51, with transverse telescopic cylinders 52 mounted on the left and right ends of the housing 5. A support 53 is mounted on the output end of each telescopic cylinder 52, and a clamping seat 54 is mounted on the upper end of each support 53. Side clamping plates 541 are installed between the left and right clamping seats 54, and a buffer layer 56 is installed between the front and rear side clamping plates 541. The lower end of the buffer layer 56 is connected to... A lower electrode 55 is provided, and a second lower electrode 57, which slides through a clamping seat 54, is fixed on a housing 51. The second lower electrode 57 slides in contact with the first lower electrode 55. A vertical telescopic cylinder 511 is installed on the rear side of the housing 51. A support 512 is installed at the output end of the telescopic cylinder 511. A column rod 513 is installed on the support 512, and a circular electrode 514 is installed on the column rod 513. An upper electrode rod 58, connected to the circular electrode 514, is also installed above the housing 51. The upper electrode rod 58 is connected to a series line 59. (The last sentence appears to be incomplete and possibly refers to a combination of two different components.) Figure 3 As shown, the side clamp 541 has a C-shaped cross-section. The two side clamps 541 clamp the side end face of the compression buffer layer 56, so that both the upper and lower ends of the buffer layer 56 have exposed surfaces. The upper exposed surface of the buffer layer 56 is used for contact testing with the circular electrode 514, and the lower exposed surface of the buffer layer 56 contacts the lower electrode plate 55. Since the cable is actually deformed into an arc after installation, the side clamps 514, the lower electrode plate 55, and the side clamps 541 are all flexible structures during implementation to simulate the multi-parameter electrical performance test when the buffer layer 56 is deformed into an arc, thereby simulating and obtaining more realistic electrical performance test data.

[0027] In this embodiment, an odd number of telescopic cylinders 511 are equidistantly arranged along the buffer layer 56; in implementation, for example, combined with Figure 1 and Figure 7 As shown, the telescopic cylinder 511 located at the center is set as x0, and the equidistant distance is set as d. The cylinders are arranged sequentially to the left of x0 as -d, -2d, ..., -nd, and sequentially to the right of x0 as d, 2, ..., nd. When simulating the arc deformation of the buffer layer 56, the radius r of the simulated arc of the buffer layer 56 is set, and the number of telescopic cylinders 511 is set as 2n+1. The telescopic cylinders 511 at the -nd and nd positions are not initially adjusted. The telescopic cylinders 511 at the -d, -2d, ..., -(n-1)d and d, 2d, ..., (n-1)d positions are adjusted downwards. The adjustment displacement at the -(n-1)d and (n-1)d positions is the same. In this embodiment, the y-axis is set with the position of x0, the coordinates of the center of the circle with radius r are calculated, the coordinates (nd, 0) are set on the circle, and the horizontal coordinate of the center of the circle is set as (0, m). Therefore, the downward adjustment distance of the telescopic cylinder 511 at position (n-1)d is successively set as follows: ,like Figure 7 As shown, the telescopic cylinder 511 is intelligently controlled to control the downward pressure of the buffer layer 56 to form the required simulated arc deformation, thereby obtaining more realistic and effective electrical performance test data. In addition, during the downward pressure of the buffer layer 56, the lateral tension of the buffer layer 56 can be set by the telescopic cylinder 52 in conjunction with the movement of the control support 53.

[0028] In this embodiment, a pressure roller 516 corresponding to the upper end of the side clamping plate 541 is installed on the first column 513. A vertical telescopic cylinder 520 is installed on the second support 512. A third support 517 is installed at the lower end of the telescopic cylinder 520. A second column 518 is installed on the third support 517. A second pressure roller 519 corresponding to the lower end of the side clamping plate 541 is installed on the second column 518. The first pressure roller 516 is used to press down on the buffer layer 56, and the second pressure roller 519 is used to push up on the buffer layer 56. That is, after the position of the first pressure roller 516 is adjusted, the first pressure roller 516 does not move. If it is necessary to adjust the conditions of different pressures on the buffer layer 56, the second pressure roller 519 is used to push up, thereby simulating the electrical performance test of the buffer layer 56 under different pressure conditions.

[0029] In this embodiment, the support 53 is provided with a tension sensor 531 for detecting the lateral tension of the support 53 and the buffer layer 56, so as to set the lateral tension condition of the buffer layer 56. The column 513 is provided with a pressure sensor 515 for detecting the pressure of the pressure roller 516 pressing down on the buffer layer 56, so as to compare and detect the arc deformation of the buffer layer. The telescopic cylinder 520 is provided with a pressure sensor 521 for detecting the clamping pressure on the buffer layer 56, so as to set different pressure conditions for the buffer layer 56.

[0030] In this embodiment, the side clamp 541 is also provided with a water guide pipe 7 that is in contact with the side end of the buffer layer 56. The end of the water guide pipe 7 near the buffer layer 56 is provided with a water guide hole 8. The water guide pipe 7 is connected to the water control tank 11 through the conduit 10 so as to simulate the electrical performance test under the condition of water resistance of the buffer layer 56.

[0031] In this embodiment, the end face of the water pipe 7 near the buffer layer 56 is also provided with a water channel 9 so that the buffer layer 56 can come into contact with water.

[0032] In this embodiment, the upper pole rod 58 penetrates the upper end face of the housing 51. The upper end of the upper pole rod 58 is connected to the housing 51 by a tension spring 510. The lower end of the upper pole rod 58 is in contact with the upper end of the circular electrode 514. When the upper pole rod 58 is pressed down, the tension spring 510 can drive the upper pole rod 58 to make close contact with the circular electrode 514.

[0033] In this embodiment, the lower electrode plate 57 is grounded through a wire, the series line 59 is connected to the output terminal of the power frequency test transformer 2, a fuse 3 is connected between the output terminal of the power frequency test transformer 2 and the series line 59, the input terminal of the power frequency test transformer 2 is connected to the output terminal of the voltage regulator 1, the input terminal of the voltage regulator 1 is connected to the 220V mains power, a voltmeter 4 is connected in parallel across the two ends of the buffer layer test unit 5, and an ammeter 6 is connected in series on the grounding wire of the buffer layer test unit 5.

[0034] In this embodiment, the housing 51 is also provided with a humidity regulator 13 for controlling the humidity of the housing cavity and a temperature regulator 12 for controlling the temperature, so as to simulate the electrical performance test of the buffer layer 56 under different temperature and humidity conditions.

[0035] In its specific implementation, it includes the following steps:

[0036] Step 1: Set the number of telescopic cylinders 511 to 2n+1, set the radius r of the simulated arc of the buffer layer 56, and adjust the downward distance of telescopic cylinder 511 at position (n-1)d. This completes the adjustment of buffer layer 56;

[0037] Step 2: If it is necessary to adjust the lateral tension of the buffer layer 56, the adjustment shall be made by means of telescopic cylinder 52;

[0038] Step 3: If it is necessary to adjust the conditions of different pressures on the buffer layer 56, then adjust it by pushing it upwards using pressure roller 519;

[0039] Step 4: If it is necessary to adjust the temperature and humidity conditions of the buffer layer 56, start the humidity regulator 13 and start the temperature regulator 12.

[0040] Step 5: Record the experimental process and parameter changes.

[0041] The above description is merely a preferred embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-parameter electrical performance testing platform for smart grid cable buffer layers, comprising a buffer layer testing unit (5), characterized in that, The buffer layer test unit (5) includes a housing (51), with a horizontal telescopic cylinder (52) installed on the left and right ends of the housing (5). A support (53) is installed at the output end of the telescopic cylinder (52), and a clamp (54) is installed on the upper end of the support (53). A side clamp (541) is installed between the left and right side clamps (54), and a buffer layer (56) is installed between the front and rear side clamps (541). A lower electrode plate (55) is connected to the lower end of the buffer layer (56), and a sliding through clamp (55) is fixed on the housing (51). 4) The lower electrode plate 2 (57) slides in contact with the lower electrode plate 1 (55). A vertical telescopic cylinder 2 (511) is installed on the rear side of the shell (51). A support 2 (512) is installed at the output end of the telescopic cylinder 2 (511). A column rod 1 (513) is installed on the support 2 (512). A round electrode (514) is installed on the column rod 1 (513). An upper electrode rod (58) connected to the round electrode (514) is also installed above the shell (51). The upper electrode rod (58) is connected to the series line (59). The first column (513) is equipped with a pressure roller (516) corresponding to the upper end of the side clamp (541). The second support (512) is equipped with a vertical telescopic cylinder (520). The lower end of the telescopic cylinder (520) is equipped with a support (517). The second column (518) is installed on the support (517). The second column (519) corresponding to the lower end of the side clamp (541) is installed on the second column (518).

2. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 1, characterized in that, The telescopic cylinders (511) are arranged at equal intervals along the buffer layer (56) in an odd number.

3. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 1, characterized in that, The support (53) is provided with a tension sensor (531) for detecting the lateral tension of the support (53) and the buffer layer (56), the column (513) is provided with a pressure sensor (515) for detecting the pressure of the pressure roller (516) pressing down on the buffer layer (56), and the telescopic cylinder (520) is provided with a pressure sensor (521) for detecting the clamping pressure on the buffer layer (56).

4. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 1, characterized in that, The side clamp (541) is also provided with a water guide pipe (7) that is in contact with the side end of the buffer layer (56). The end of the water guide pipe (7) near the buffer layer (56) is provided with a water guide hole (8). The water guide pipe (7) is connected to the water control tank (11) through a conduit (10).

5. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 4, characterized in that, The water guide pipe (7) is also provided with a water guide groove (9) at one end face near the buffer layer (56).

6. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 1, characterized in that, The upper pole rod (58) penetrates the upper end face of the shell (51), and the upper end of the upper pole rod (58) is connected to the shell (51) by a tension spring (510). The lower end of the upper pole rod (58) is in contact with the upper end of the circular electrode (514).

7. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 1, characterized in that, The lower electrode plate 2 (57) is grounded through a wire, the series line (59) is connected to the output end of the power frequency test transformer (2), a fuse (3) is connected between the output end of the power frequency test transformer (2) and the series line (59), the input end of the power frequency test transformer (2) is connected to the output end of the voltage regulator (1), the input end of the voltage regulator (1) is connected to the (220)V mains power, a voltmeter (4) is connected in parallel at both ends of the buffer layer test unit (5), and an ammeter (6) is connected in series on the grounding wire of the buffer layer test unit (5).

8. The multi-parameter electrical performance testing platform for smart grid cable buffer layers according to claim 1, characterized in that, The housing (51) is also provided with a humidity regulator (13) for regulating the humidity of the housing cavity and a temperature regulator (12) for regulating the temperature.

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