Intelligent power grid cable buffer layer multi-parameter electrical performance detection test platform

Abstract

A smart grid cable buffer layer multi-parameter electrical performance detection test platform disclosed by the present invention comprises a buffer layer test unit, the buffer layer test unit comprises a housing, the left end and the right end of the housing are respectively provided with a transverse telescopic cylinder 1, the output end of the telescopic cylinder 1 is provided with a support 1, and the upper end of the support 1 is provided with a clamping seat. Side clamping plates which are arranged front and back are installed between the clamping seats, a buffer layer is installed between the side clamping plates, the lower end of the buffer layer is connected with a first lower pole piece, a second lower pole piece which penetrates through the clamping seats in a sliding mode is fixed to the shell cover, the second lower pole piece is in sliding contact with the first lower pole piece, a vertical second telescopic cylinder is installed on the rear side of the shell cover, and a second support is installed at the output end of the second telescopic cylinder; a first column rod is installed on the second support, a round electrode is installed on the first column rod, an upper pole rod connected with the round electrode is further installed above the shell cover, and the upper pole rod is connected to the series connection line. The electrical performance detection test of the buffer layer under multiple conditions can be simulated, more real and comprehensive test data can be obtained, and the test efficiency is more intelligent and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power cable insulation characteristic experiment, and in particular to a multi-parameter electrical performance detection test platform for a smart grid cable buffer layer. Background Art

[0002] The establishment of an electrical performance test platform for the buffer layer of power grid cables under different conditions is the basis for the performance test of the buffer layer and the basis for the establishment of a multi-parameter model. In order 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 controllable environment, and this environment has no effect on other components to meet the test time and accuracy requirements.

[0003] After the cable is installed, it is affected by gravity and often presents a certain arc structure, and under this condition, it is affected by external environmental conditions and causes failures. At present, the existing performance test of the buffer layer is difficult to effectively simulate the electrical performance parameter test of the cable buffer layer under the actual situation.

[0004] Therefore, it is necessary to provide a smart grid cable buffer layer multi-parameter electrical performance detection test platform to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-parameter electrical performance detection test platform for a smart grid cable buffer layer, comprising a buffer layer test unit, the buffer layer test unit comprising a shell cover, a horizontal telescopic cylinder 1 is respectively installed on the left and right ends of the shell cover, a support 1 is installed on the output end of the telescopic cylinder 1, a clamp seat is installed on the upper end of the support 1, front and rear side clamps are installed between the left and right side clamps, a buffer layer is installed between the front and rear side clamps, a lower pole piece 1 is connected to the lower end of the buffer layer, a lower pole piece 2 that slides through the clamp seat is fixed on the shell cover, the lower pole piece 2 is in sliding contact with the lower pole piece 1, a vertical telescopic cylinder 2 is installed on the rear side of the shell cover, a support 2 is installed on the output end of the telescopic cylinder 2, a column rod 1 is installed on the support 2, a circular electrode is installed on the column rod 1, an upper pole rod connected to the circular electrode is also installed above the shell cover, and the upper pole rod is connected to the series line.

[0006] Further, preferably, an odd number of the telescopic cylinders 2 are equidistantly arranged along the buffer layer.

[0007] Further, as a preference, a pressure wheel 1 corresponding to the upper end of the side splint is installed on the column rod 1, a vertical telescopic cylinder 3 is installed on the support 2, a support 3 is installed at the lower end of the telescopic cylinder 3, a column rod 2 is installed on the support 3, and a pressure wheel 2 corresponding to the lower end of the side splint is installed on the column rod 2.

[0008] Further, as a preference, the support one is provided with a tension sensor for detecting the lateral tension of the support one and the buffer layer, the column one is provided with a pressure sensor one for detecting the pressure of the buffer layer when the pressure wheel presses down, and the telescopic cylinder three is provided with a pressure sensor two for detecting the clamping pressure exerted on the buffer layer.

[0009] Furthermore, preferably, the side clamp is also provided with a water pipe in contact with the side end of the buffer layer, and a water hole is provided at one end of the water pipe close to the buffer layer. The water pipe is connected to the water control tank through a conduit.

[0010] Furthermore, preferably, a water guide groove is provided on an end surface of the water guide pipe close to the buffer layer.

[0011] Further, as a preference, the upper pole rod passes through the upper end surface of the shell cover, the upper end of the upper pole rod is connected to the shell cover via a tension spring, and the lower end of the upper pole rod contacts the upper end of the circular electrode.

[0012] Further, as a preference, the lower pole piece 2 is grounded through a wire, the series line is connected to the output end of the power frequency test transformer, a fuse is connected between the output end of the power frequency test transformer and the series line, the input end of the power frequency test transformer is connected to the output end of the voltage regulator, the input end of the voltage regulator is connected to the V mains, a voltmeter is connected in parallel at both ends of the buffer layer test unit, and an ammeter is connected in series to the grounding wire of the buffer layer test unit.

[0013] Furthermore, as a preference, the shell cover is also provided with a humidity regulator for regulating the humidity of the shell cover cavity and a temperature control regulator for regulating the temperature.

[0014] Compared with the prior art, the present invention provides a multi-parameter electrical performance detection test platform for a smart grid cable buffer layer, which has the following beneficial effects:

[0015] In the present invention, by setting and arranging multiple telescopic cylinders and installing the buffer layer, it is possible to simulate a multi-parameter electrical performance test when the buffer layer is deformed in an arc shape, thereby simulating and obtaining more realistic electrical performance test data. Moreover, by controlling the control program of the telescopic cylinders, the arc shape of the buffer layer of different radii can be simulated intelligently and efficiently.

[0016] In the present invention, the second pressure wheel is used to push up the buffer layer, so that the buffer layer can be subjected to different pressure conditions, and the electrical performance test of the buffer layer under different pressure conditions can be simulated.

[0017] In the present invention, the electrical performance test of the buffer layer under water-blocking conditions is simulated by means of structural designs such as water conduits, and the electrical performance test of the buffer layer under different temperature and humidity conditions is simulated by means of temperature control regulators and humidity regulators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the detection test platform of the present invention;

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

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

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

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

[0023] Figure 6 It is the principle wiring diagram of the power frequency voltage circuit of the present invention;

[0024] Figure 7 This is a diagram of the arc-shaped simulation implementation of the buffer layer of the present invention;

[0025] In the figure: 1, voltage regulator; 2, power frequency test transformer; 3, fuse; 4, voltmeter; 5, buffer layer test unit; 6, ammeter; 7, water pipe; 8, water hole; 9, water groove; 10, guide tube; 11, water control tank; 12, temperature control regulator; 13, humidity regulator; 51, shell cover; 52, telescopic cylinder 1; 53, support 1; 54, clamp seat; 55, lower pole piece 1; 56, buffer layer; 57 , lower pole piece two; 58, upper pole; 59, series line; 510, tension spring; 511, telescopic cylinder two; 512, support two; 513, column rod one; 514, circular electrode; 515, pressure sensor one; 516, pressure wheel one; 517, support three; 518, column rod two; 519, pressure wheel two; 520, telescopic cylinder three; 521, pressure sensor two; 531, tension sensor; 541, side clamp. DETAILED DESCRIPTION

[0026] Reference Figure 1-Figure 7The present invention provides a technical solution: a multi-parameter electrical performance test platform for a smart grid cable buffer layer, comprising a buffer layer test unit 5, wherein the buffer layer test unit 5 comprises a shell cover 51, wherein the left and right ends of the shell cover 5 are respectively provided with a transverse telescopic cylinder 52, wherein the output end of the telescopic cylinder 52 is provided with a support 53, wherein the upper end of the support 53 is provided with a clamping seat 54, wherein front and rear side clamping plates 541 are provided between the left and right side clamping seats 54, wherein a buffer layer 56 is provided between the front and rear side clamping plates 541, wherein the lower end of the buffer layer 56 is connected to There is a lower pole piece 55, a lower pole piece 57 slidingly penetrating the clamp seat 54 is fixed on the shell cover 51, and the lower pole piece 57 is in sliding contact with the lower pole piece 55. A vertical telescopic cylinder 511 is installed on the rear side of the shell cover 51, and a support 512 is installed on the output end of the telescopic cylinder 511. A column 513 is installed on the support 512, and a round electrode 514 is installed on the column 513. An upper pole 58 connected to the round electrode 514 is also installed above the shell cover 51, and the upper pole 58 is connected to the series line 59; wherein, in combination with Figure 3 As shown, the cross-section of the side clamping plate 541 is a C-shaped structure, and the two side clamping plates 541 clamp the side end faces of the wrapped buffer layer 56, so that the upper and lower ends of the buffer layer 56 have exposed surfaces, and the upper exposed surface of the buffer layer 56 is used for contact test with the circular electrode 514, and the lower exposed surface of the buffer layer 56 contacts the lower pole piece 55. Since the cable is actually deformed into an arc shape after installation, during the implementation process, the side clamping plates 514, the lower pole piece 55 and the side clamping plates 541 are all flexible structures, so as to simulate the multi-parameter electrical performance test when the buffer layer 56 is deformed into an arc shape, thereby simulating to obtain more realistic electrical performance test data.

[0027] In this embodiment, an odd number of the telescopic cylinders 511 are arranged equidistantly along the buffer layer 56; in the implementation process, for example, Figure 1 and Figure 7 As shown, the telescopic cylinder 511 located at the center is set to x0, the equidistant distance is set to d, and the positions arranged in sequence from x0 to the left are -d, -2d...-nd, and the positions arranged in sequence from x0 to the right are d, 2...nd. When the arc deformation of the buffer layer 56 is required to be simulated, the radius r of the simulated arc of the buffer layer 56 is set, and the setting number of the telescopic cylinder 511 is set to 2n+1. The telescopic cylinder 511 located at the positions of -nd and nd is not adjusted initially, and the telescopic cylinder 511 located at the positions of -d, -2d...-(n-1)d and d, 2d...(n-1)d is adjusted downward, wherein the adjustment displacements at the positions of -(n-1)d and (n-1)d are the same. In this embodiment, the y-axis is set at the position where x0 is located, the coordinates of the center of the circle with a radius of r are calculated, the coordinates (nd, 0) are set on the circle, and the horizontal coordinates of the center of the circle are set to (0, m). Therefore, the downward adjustment distance of the telescopic cylinder 2 511 at the (n-1)d position is set as ,like Figure 7 As shown, the telescopic cylinder 2 511 is intelligently regulated to control the downward pressure of the buffer layer 56 to form the desired simulated arc deformation, so as to obtain 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 cooperating with the telescopic cylinder 1 52 to regulate the movement of the support 1 53.

[0028] In this embodiment, a pressure wheel 516 corresponding to the upper end of the side clamp 541 is installed on the column rod 1 513, a vertical telescopic cylinder 3 520 is installed on the support 2 512, a support 3 517 is installed on the lower end of the telescopic cylinder 3 520, a column rod 2 518 is installed on the support 3 517, and a pressure wheel 2 519 corresponding to the lower end of the side clamp 541 is installed on the column rod 2 518, wherein the pressure wheel 1 516 is used to press down the buffer layer 56, and the pressure wheel 2 519 is used to push up the buffer layer 56, that is, after the position of the pressure wheel 1 516 is adjusted, the pressure wheel 1 516 does not move, if it is necessary to adjust the conditions of different pressures on the buffer layer 56, it is pushed up by the pressure wheel 2 519, thereby simulating the electrical performance detection test of the buffer layer 56 under different pressure conditions.

[0029] In this embodiment, the support 1 53 is provided with a tension sensor 531 for detecting the lateral tension of the support 1 53 and the buffer layer 56, so as to set the lateral tension condition of the buffer layer 56; the column 1 513 is provided with a pressure sensor 515 for detecting the pressure of the pressure wheel 1 516 pressing down on the buffer layer 56, so as to compare and detect the arc deformation of the buffer layer; the telescopic cylinder 3 520 is provided with a pressure sensor 2 521 for detecting the clamping pressure of the buffer layer 56, so as to set different pressure conditions of the buffer layer 56.

[0030] In this embodiment, the side clamp plate 541 is further provided with a water pipe 7 which is in contact with the side end of the buffer layer 56. The end of the water pipe 7 close to the buffer layer 56 is provided with a water hole 8. The water pipe 7 is connected to the water control tank 11 through a conduit 10 to simulate the electrical performance test under the water blocking condition of the buffer layer 56.

[0031] In this embodiment, a water guide groove 9 is further provided on an end surface of the water guide pipe 7 close to the buffer layer 56 so that the buffer layer 56 can contact water.

[0032] In this embodiment, the upper pole rod 58 passes through the upper end surface of the shell cover 51, the upper end of the upper pole rod 58 is connected to the shell cover 51 through a tension spring 510, and the lower end of the upper pole rod 58 contacts the upper end of the circular electrode 514. When the upper pole rod 558 is pressed downward, the tension spring 510 can drive the upper pole rod 58 to be in close contact with the circular electrode 514.

[0033] In this embodiment, the lower pole piece 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 220V AC 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 to the grounding wire of the buffer layer test unit 5.

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

[0035] In 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 arc simulated by the buffer layer 56, and adjust the telescopic cylinder 511 at the position (n-1)d downward by a distance , completing the adjustment of the buffer layer 56;

[0037] Step 2: If the lateral tension of the buffer layer 56 needs to be adjusted, the adjustment is performed through the telescopic cylinder 1 52;

[0038] Step 3: If it is necessary to adjust the different pressure conditions on the buffer layer 56, the pressure wheel 519 is used to adjust the top;

[0039] Step 4: If the temperature and humidity conditions of the buffer layer 56 need to be adjusted, start the humidity regulator 13 and start the temperature control regulator 12;

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

[0041] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-parameter electrical performance testing platform for a smart grid cable buffer layer, comprising a buffer layer testing unit (5), characterized in that: The buffer layer test unit (5) comprises a shell cover (51), the left and right ends of the shell cover (5) are respectively mounted with a transverse telescopic cylinder (52), the output end of the telescopic cylinder (52) is mounted with a support (53), the upper end of the support (53) is mounted with a clamp seat (54), front and rear side clamp plates (541) are mounted between the left and right side clamp seats (54), a buffer layer (56) is mounted between the front and rear side clamp plates (541), the lower end of the buffer layer (56) is connected with a lower pole piece (55), and a sliding penetrating clamp seat (54) is fixed on the shell cover (51). 4), the lower pole piece 2 (57) is in sliding contact with the lower pole piece 1 (55), a vertical telescopic cylinder 2 (511) is installed on the rear side of the shell cover (51), a support 2 (512) is installed on the output end of the telescopic cylinder 2 (511), a column rod 1 (513) is installed on the support 2 (512), a circular electrode (514) is installed on the column rod 1 (513), and an upper pole rod (58) connected to the circular electrode (514) is also installed above the shell cover (51), and the upper pole rod (58) is connected to the series line (59).

2. According to claim 1, a smart grid cable buffer layer multi-parameter electrical performance detection test platform is characterized in that: An odd number of the second telescopic cylinders (511) are arranged at equal intervals along the buffer layer (56).

3. According to claim 1, a smart grid cable buffer layer multi-parameter electrical performance detection test platform is characterized in that: The column rod one (513) is provided with a pressure wheel one (516) corresponding to the upper end of the side clamping plate (541), the support two (512) is provided with a vertical telescopic cylinder three (520), the lower end of the telescopic cylinder three (520) is provided with a support three (517), the support three (517) is provided with a column rod two (518), and the column rod two (518) is provided with a pressure wheel two (519) corresponding to the lower end of the side clamping plate (541).

4. According to claim 3, a smart grid cable buffer layer multi-parameter electrical performance detection test platform is characterized in that: The support one (53) is provided with a tension sensor (531) for detecting the lateral tension of the support one (53) and the buffer layer (56); the column rod one (513) is provided with a pressure sensor one (515) for detecting the pressure of the pressure wheel one (516) pressing down on the buffer layer (56); and the telescopic cylinder three (520) is provided with a pressure sensor two (521) for detecting the clamping pressure exerted on the buffer layer (56).

5. According to claim 1, a smart grid cable buffer layer multi-parameter electrical performance detection test platform is characterized in that: The side clamping plate (541) is also provided with a water guide pipe (7) in contact with the side end of the buffer layer (56); one end of the water guide pipe (7) close to the buffer layer (56) is provided with a water guide hole (8); and the water guide pipe (7) is connected to the water control tank (11) via a conduit (10).

6. A smart grid cable buffer layer multi-parameter electrical performance detection test platform according to claim 5, characterized in that: A water guide groove (9) is also provided on an end surface of the water guide pipe (7) close to the buffer layer (56).

7. A smart grid cable buffer layer multi-parameter electrical performance detection test platform according to claim 1, characterized in that: The upper pole rod (58) penetrates the upper end surface of the shell cover (51), the upper end of the upper pole rod (58) is connected to the shell cover (51) via a tension spring (510), and the lower end of the upper pole rod (58) contacts the upper end of the circular electrode (514).

8. The multi-parameter electrical performance testing platform for a smart grid cable buffer layer according to claim 1 is characterized in that: The lower pole piece 2 (57) is grounded via a conductor, 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, 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 to the grounding wire of the buffer layer test unit (5).

9. A smart grid cable buffer layer multi-parameter electrical performance detection test platform according to claim 1, characterized in that: The shell cover (51) is also provided with a humidity regulator (13) for regulating the humidity of the shell cavity of the shell cover (51) and a temperature control regulator (12) for regulating the temperature.

Images