CN115266427A - Wet-electricity-alternating load multi-factor composite insulator aging test platform - Google Patents
Wet-electricity-alternating load multi-factor composite insulator aging test platform Download PDFInfo
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- CN115266427A CN115266427A CN202210721356.9A CN202210721356A CN115266427A CN 115266427 A CN115266427 A CN 115266427A CN 202210721356 A CN202210721356 A CN 202210721356A CN 115266427 A CN115266427 A CN 115266427A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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Abstract
The invention relates to the technical field of insulator aging tests, and discloses a wet-electricity-alternating load multi-factor composite insulator aging test platform which comprises a test box, wherein a loading platform for placing a composite insulator, a temperature and humidity control module for simulating environmental temperature and humidity conditions in the actual operation process of the composite insulator, a voltage loading module for simulating high voltage and high field strength conditions in the actual net hanging operation process of the composite insulator and an alternating load applying module for compressing and resetting the composite insulator to load an alternating buckling load are arranged in the test box.
Description
Technical Field
The invention relates to an insulator aging test device, in particular to a wet-electricity-alternating load multi-factor composite insulator aging test platform.
Background
The power system is used as an important support for national economy, and the maintenance of the stable operation of the power system is an important task. The importance of the insulator as an important component of the power system is also self-evident. Compared with the traditional porcelain insulator and glass insulator, the composite insulator has the advantages of light weight, dirt resistance, easy installation and the like, and is widely applied to the power grid in China at present. However, the composite insulator is mainly made of organic materials, and is subjected to bending stress applied by wind and ice in addition to tensile load in the using process. Such long-term bending stress inevitably causes the composite insulator to age, which affects the safe operation of the power grid. The existing composite insulator aging test only considers mechanical influence and cannot simulate the actual operation condition of the composite insulator.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide an aging test platform capable of simulating the actual operation condition of the composite insulator under the multi-factor environmental condition.
The technical scheme of the invention is realized as follows:
the invention provides a wet-electricity-alternating load multi-factor composite insulator aging test platform which comprises a test box, wherein a loading platform for placing a composite insulator, a temperature and humidity control module for simulating environmental temperature and humidity conditions in the actual running process of the composite insulator, a voltage loading module for simulating high voltage and high field intensity conditions in the actual net hanging running process of the composite insulator and an alternating load applying module for compressing and resetting the composite insulator to realize the loading of an alternating buckling load on the composite insulator are arranged in the test box.
Preferably, the temperature and humidity control module comprises a centrifugal fan, a heater, an evaporator and a water supply system, and the centrifugal fan, the heater, the evaporator and the water supply system are respectively connected with the temperature and humidity control system.
Preferably, the temperature and humidity control system comprises a display and a temperature and humidity controller, the display and the temperature and humidity controller are installed on the front face of the test box, and the display is connected with the temperature and humidity control module through the temperature and humidity controller.
Preferably, the voltage loading module comprises a test power supply, an insulating sleeve and a box insulating structure, the insulating sleeve is installed at the top of the test box, the inner box wall and the outer wall grounding body of the test box are separated by the box insulating structure, and the test power supply applies power frequency voltage to the composite insulator in the test box through the insulating sleeve.
Preferably, the alternating load applying module comprises a servo electric cylinder and a metal clamp, the servo electric cylinder is installed on the side wall of the test box, one end of the composite insulator is hinged to the loading platform through the metal clamp, and the other end of the composite insulator is hinged to a transmission rod of the servo electric cylinder through the metal clamp.
Preferably, the alternating load applying module further comprises a control platform, the control platform is installed on the outer side of the test box, an alternating load controller is installed in the control platform, a dynamic force sensor is arranged at the front end of a transmission rod of the servo electric cylinder, and the dynamic force sensor is connected with the control platform through the alternating load controller.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a wet-electricity-alternating load multi-factor composite insulator aging test platform, which adjusts the temperature and humidity environment in a test box through a temperature and humidity control module, a voltage loading module starts to provide a high-voltage environment, an alternating load applying module drives a composite insulator to reciprocate, the actual stress process of the composite insulator under the multi-factor environment conditions of high voltage, various temperatures and humidity and the like is simulated, and various performances of the composite insulator are tested by recording the instantaneous fracture value and the buckling times of the composite insulator.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of an external structure of a wet-electricity-alternating load multi-factor composite insulator aging test platform according to the present invention;
fig. 2 is a schematic diagram of an internal structure of a wet-electricity-alternating load multi-factor composite insulator aging test platform.
In the figure, 1 test box, 2 loading platform, 3 centrifugal fan, 4 heater, 5 evaporator, 6 water supply system, 7 display, 8 temperature and humidity controller, 9 test power supply, 10 insulating sleeve, 11 servo electric cylinder, 12 metal clamp, 13 control platform, 14 dynamic force sensor, 15 composite insulator.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 2, the invention provides a humidity-electricity-alternating load multi-factor composite insulator aging test platform, which comprises a GP/TH 1800-20/150 type large-scale constant temperature and humidity test box 1, wherein a loading platform 2 for placing a composite insulator 15, a temperature and humidity control module for simulating environmental temperature and humidity conditions in the actual operation process of the composite insulator 15, a voltage loading module for simulating high voltage and high field strength conditions in the actual net hanging operation process of the composite insulator 15 and an alternating load applying module for compressing and resetting the composite insulator 15 to realize the loading of alternating buckling load are arranged in the test box 1.
The rod-shaped composite insulator 15 is horizontally arranged in the loading platform 2, the temperature and humidity control module adjusts the temperature and humidity environment in the test box 1, after the temperature and humidity conditions reach the required target, the voltage loading module starts to provide a high-voltage environment, the alternating load applying module drives the composite insulator 15 to reciprocate, and the composite insulator 15 is compressed inwards to bend the composite insulator 15; the composite insulator 15 is stretched outwards to enable the composite insulator 15 to be straightened and reset, the reciprocating motion simulates the actual stress process of the composite insulator 15 under the multi-factor environmental conditions of high voltage, various temperatures and humidity and the like, and various performances of the composite insulator 15 are tested by recording the instantaneous fracture value and the buckling times of the composite insulator 15.
The temperature and humidity control module comprises a centrifugal fan 3, a heater 4, an evaporator 5 and a water supply system 6, wherein the centrifugal fan 3, the heater 4, the evaporator 5 and the water supply system 6 are respectively connected with the temperature and humidity control system.
The temperature and humidity control system comprises a display 7 and a temperature and humidity controller 8, the display 7 and the temperature and humidity controller 8 are installed on the front face of the test box 1, and the display 7 is connected with the temperature and humidity control module through the temperature and humidity controller 8.
The test box 1 has the external dimension of 1800mm in length, 1800mm in width, 2335mm in height and 1920L in inner volume, and the inner box has the dimension of 1000mm in depth, 1600mm in width and 1200mm in height. The air conditioning mode in the box body is an air forced circulation and static balance temperature and humidity adjusting mode. A plurality of centrifugal fans 3, 304 and a heater 4 (the heater 4 does not directly radiate the test sample) and a fin type hydrophilic evaporator 5 are adopted. The water supply system 6 adopts a water pump lifting water supply mode, the water supply device is arranged in the side drawer type water tank, and the water storage tank is about 30L. The controller of the module adopts a 990 controller, the display 7 is a 7-inch TFT 64K color LCD display 7, and 365-day test data (including temperature and humidity curves, fault records and the like) can be stored continuously to the maximum extent.
The voltage loading module comprises a test power supply 9, an insulating sleeve 10 and a box body insulating structure, wherein the test power supply 9 adopts an HY-AC20 type power frequency power supply, the insulating sleeve 10 adopts an FCWB-35/1250 type 35kV sleeve, the insulating sleeve 10 is installed at the top of the test box 1, the inner box wall and the outer wall grounding body of the test box 1 are separated by an epoxy resin insulating plate with the thickness of 80mm, the test power supply 9 can bear 50kV voltage without breakdown, the test power supply 9 applies power frequency voltage to a composite insulator 15 in the test box 1 through the insulating sleeve 10, and a pressurizing end and a grounding end on the composite insulator 15 are respectively arranged at the buckling part of the middle section.
The alternating load applying module comprises a servo electric cylinder 11 and a metal clamp 12, the servo electric cylinder 11 is installed on the side wall of the test box 1, one end of the composite insulator 15 is hinged to the loading platform 2 through the metal clamp 12, and the other end of the composite insulator is hinged to a transmission rod of the servo electric cylinder 11 through the metal clamp 12.
The alternating load applying module further comprises a control platform 13, the control platform 13 is installed on the outer side of the test box 1, an alternating load controller is installed in the control platform 13, a dynamic force sensor 14 is arranged at the front end of a transmission rod of the servo electric cylinder 11, and the dynamic force sensor 14 is connected with the control platform 13 through the alternating load controller.
The module is mainly used for simulating the special mechanical characteristics of the compact line V-string composite insulator 15, and the composite insulator 15 is loaded with alternating buckling load through the reciprocating motion of compression and resetting of the servo electric cylinder 11. The external dimension of the loading platform 2 is 2540mm long, 600mm wide and 250mm high, the loading platform adopts a two-upright-column door type design and is manually locked, metal clamps 12 at two ends are designed according to the specification of a test article, a dynamic force sensor 14 arranged at the front end of a transmission rod of a servo electric cylinder 11 is connected with a servo motor controller, and the controller adopts a high-resolution feedback sampling and signal adjusting technology and a whole-process non-stepping measuring technology, so that accurate and repeatable measuring data in the measuring range of the whole sensor are ensured.
The working steps are as follows:
step 1: the rod-shaped composite insulator 15 is horizontally arranged in the door type loading platform 2;
step 2: hardware fittings at two ends of the composite insulator 15 are connected with the metal clamp 12 in the portal loading platform 2;
and step 3: and operating the temperature and humidity control system and the alternating load control platform 13 to set the environmental temperature and humidity conditions of the composite insulator 15 and the size and the times of the test push-pull stroke.
And 4, step 4: when the temperature and humidity conditions reach the required target, the voltage loading module starts to provide a high voltage environment, the motor in the servo electric cylinder 11 starts to rotate forwards, the transmission rod moves rightwards, pressure load is applied to the left side of the composite insulator 15, the composite insulator 15 is bent, and the dynamic force sensor 14 transmits the pressure value to the alternating load control platform 13.
And 5: when the preset test push-pull stroke is reached, the motor in the servo electric cylinder 11 starts to rotate reversely, the transmission rod moves leftwards, and the composite insulator 15 is straightened.
Step 6: in this way, the reciprocating motion simulates the actual stress process of the composite insulator 15, and the alternating load control platform 13 can record the instantaneous fracture value and the buckling times.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (6)
1. The platform is characterized by comprising a test box, wherein a loading platform for placing a composite insulator, a temperature and humidity control module for simulating environment temperature and humidity conditions in the actual operation process of the composite insulator, a voltage loading module for simulating high voltage and high field intensity conditions in the actual net hanging operation process of the composite insulator and an alternating load applying module for compressing and resetting the composite insulator to realize the loading of an alternating buckling load are arranged in the test box.
2. The wet-electric-alternating load multi-factor composite insulator aging test platform according to claim 1, wherein the temperature and humidity control module comprises a centrifugal fan, a heater, an evaporator and a water supply system, and the centrifugal fan, the heater, the evaporator and the water supply system are respectively connected with the temperature and humidity control system.
3. The wet-electric-alternating load multi-factor composite insulator aging test platform according to claim 2, wherein the temperature and humidity control system comprises a display and a temperature and humidity controller, the display and the temperature and humidity controller are installed on the front face of the test box, and the display is connected with the temperature and humidity control module through the temperature and humidity controller.
4. The platform according to claim 1, wherein the voltage loading module comprises a test power supply, an insulating sleeve and a box insulating structure, the insulating sleeve is mounted at the top of the test chamber, the inner wall and the outer wall of the test chamber are separated by the box insulating structure, and the test power supply applies a power frequency voltage to the composite insulator in the test chamber through the insulating sleeve.
5. The wet-electric-alternating load multi-factor composite insulator aging test platform according to claim 1, wherein the alternating load applying module comprises a servo electric cylinder and a metal clamp, the servo electric cylinder is installed on the side wall of the test box, one end of the composite insulator is hinged to the loading platform through the metal clamp, and the other end of the composite insulator is hinged to a transmission rod of the servo electric cylinder through the metal clamp.
6. The wet-electric-alternating load multi-factor composite insulator aging test platform according to claim 5, wherein the alternating load applying module further comprises a control platform, the control platform is installed outside the test box, an alternating load controller is installed in the control platform, a dynamic force sensor is arranged at the front end of a transmission rod of the servo electric cylinder, and the dynamic force sensor is connected with the control platform through the alternating load controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210721356.9A CN115266427A (en) | 2022-06-24 | 2022-06-24 | Wet-electricity-alternating load multi-factor composite insulator aging test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210721356.9A CN115266427A (en) | 2022-06-24 | 2022-06-24 | Wet-electricity-alternating load multi-factor composite insulator aging test platform |
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| CN115266427A true CN115266427A (en) | 2022-11-01 |
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| CN202210721356.9A Pending CN115266427A (en) | 2022-06-24 | 2022-06-24 | Wet-electricity-alternating load multi-factor composite insulator aging test platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117368620A (en) * | 2023-12-04 | 2024-01-09 | 清华大学深圳国际研究生院 | Composite insulator aging experimental device |
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2022
- 2022-06-24 CN CN202210721356.9A patent/CN115266427A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117368620A (en) * | 2023-12-04 | 2024-01-09 | 清华大学深圳国际研究生院 | Composite insulator aging experimental device |
| CN117368620B (en) * | 2023-12-04 | 2024-04-12 | 清华大学深圳国际研究生院 | Composite insulator aging experimental device |
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