Performance detection equipment for high-voltage bushing

Abstract

The invention relates to the technical field of high-voltage bushing detection, in particular to performance detection equipment for a high-voltage bushing, which is characterized in that a to-be-detected high-voltage bushing is arranged in an oil tank assembly, and a stable insulation environment is constructed by using specially-made oil, so that insulation performance detection conditions in a high-voltage environment are ensured, and the detection efficiency is improved. A reliable basis is provided for subsequent heat energy influence analysis, the clamping and positioning assembly accurately fixes the sleeve, stability and accuracy in the detection process are ensured, potential influence of any tiny disturbance on the detection result is avoided, the temperature measuring assembly monitors the internal state of the sleeve in real time, and the detection accuracy is improved. According to the high-voltage bushing performance detection device, the thermal energy distribution and change in the operation process are finely managed, the insulativity detection assembly is used for detecting the insulativity of a high-voltage bushing to be detected, and the comprehensive application of the device not only simplifies the process of high-voltage bushing performance detection and improves the detection efficiency, but also achieves a higher level in safety, accuracy and comprehensiveness.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage bushing detection, and in particular to a performance detection device for a high-voltage bushing. Background Art

[0002] High-voltage bushings are devices that allow one or more conductors to pass through partitions such as walls or boxes, and serve as insulation and support. They are important equipment in power systems. During the manufacturing, transportation, and maintenance of high-voltage bushings, latent defects may remain due to various reasons; during long-term operation, defects may gradually occur due to the effects of electric fields and conductor heating, mechanical damage and chemical corrosion, and atmospheric conditions.

[0003] At present, high-voltage bushings are used in power transmission and transformation projects to pass current-carrying conductors through metal boxes of equipment or valve hall walls with different potentials, to introduce or lead out full voltage and full current, and to play an insulating and supporting role. In terms of electrical stress, high-voltage bushings are affected by radial and axial field strengths; in terms of operating temperature, the heat generated by current carrying and dielectric loss in high-voltage bushings will further increase the operating temperature of high-voltage bushings, and the operating conditions are extremely harsh. The reliability of high-voltage bushing operation is directly related to the safe operation of large power grids. High-voltage bushings are one of the key equipment to ensure the safe and stable operation of power systems.

[0004] Due to the failure of the high-voltage bushing caused by heat, the converter station was forced to stop repairs, resulting in huge economic losses. The operating reliability of the high-voltage bushing depends largely on its insulation performance, which is closely related to the heat generation and heat dissipation inside the high-voltage bushing. In the existing technology, some high-voltage bushing test equipment has a single detection function, such as detecting temperature changes or testing insulation resistance. However, these devices are not integrated into one, lack a complete detection system, and cannot meet the detection requirements of various performance indicators of the high-voltage bushing at the same time. Therefore, it is necessary to make improvements. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a performance detection device for a high voltage bushing to solve the above problems.

[0006] The object of the present invention is achieved as follows: A performance testing device for a high-voltage bushing comprises a clamping and positioning component, an oil tank component, a temperature measuring component and an insulation testing component;

[0007] The oil tank assembly comprises a liquid storage tank, the upper end of which is provided with a sealing cover, the bottom of the high-voltage bushing to be tested passes through the through hole of the sealing cover and is immersed in the oil in the liquid storage tank, and the oil is used to provide an insulating environment for the high-voltage bushing to be tested;

[0008] The clamping and positioning assembly is installed at the upper end of the cover and is used to vertically position and fix the high-voltage bushing to be tested;

[0009] The temperature measurement component is used to measure the temperature inside the high-voltage bushing to be tested;

[0010] The insulation detection component is used to detect the insulation of the high-voltage bushing to be detected.

[0011] Preferably, the clamping and positioning assembly includes a mounting plate, which is arranged on the upper surface of the cover, and a mounting groove is formed on the mounting plate, a hydraulic cylinder is arranged in the mounting groove, an output end of the hydraulic cylinder passes through one side of the mounting plate, a connecting block is provided at the output end of the hydraulic cylinder, movable blocks are sleeved at both ends of the connecting block, C-shaped plates are provided at both ends of the mounting plate, a first pin is provided on the upper surface of the C-shaped plate, a second pin is provided on the upper and lower surfaces of the movable block, a first connecting rod is movably connected between the first pin and the second pin, a Z-shaped plate is movably connected through one end of the C-shaped plate, a third pin is provided through the Z-shaped plate, a second connecting rod is movably connected between the third pin and the second pin, and a positioning block is fixedly connected to the end of the Z-shaped plate.

[0012] Preferably, the temperature measurement assembly includes a measuring line and a recorder, the recorder is installed on the upper end of the C-shaped plate on the left, one end of the measuring line is connected to the recorder, and the other end of the measuring line is connected to the high-voltage bushing, a plurality of temperature measuring points are arranged on the high-voltage bushing to be tested, and temperature measuring holes are opened at the temperature measuring points, one end of the measuring line is buried in the temperature measuring hole where temperature measurement is required, and the measuring line is used to measure the temperature of the temperature measuring point.

[0013] Preferably, the insulation detection component includes an insulation diagnostic instrument and a display device, one end of the insulation diagnostic instrument is wired to the high-voltage bushing to be detected, and the other end of the insulation diagnostic instrument is connected to the display device, and the insulation diagnostic instrument and the display device are both installed on the upper end of the C-shaped plate on the right.

[0014] Preferably, the opposite side surfaces of the positioning block are arc surfaces.

[0015] Preferably, the positioning block is made of silicone.

[0016] Preferably, the measuring wire is a T-type thermocouple wire, and the optimal temperature measurement range of the T-type thermocouple wire is 0°C to 150°C.

[0017] Preferably, an oil filter is connected to the outside of the liquid containing tank, and the oil filter heats the oil in the liquid containing tank and circulates the oil so that the oil is maintained within a range of 60° C. higher than the ambient temperature.

[0018] Preferably, the insulation diagnostic instrument performs FDS insulation property measurement and PDC test on the high-voltage bushing to be inspected.

[0019] The present invention has the following beneficial effects:

[0020] This performance testing equipment for high-voltage bushings, by placing the high-voltage bushing to be tested in the oil tank assembly and using special oil to build a stable insulation environment for it, not only ensures the insulation performance testing conditions under high-voltage environment, but also provides a reliable basis for subsequent thermal energy impact analysis. The clamping and positioning assembly accurately fixes the bushing, ensuring the stability and accuracy during the test process and avoiding the potential impact of any small disturbance on the test results. The temperature measurement component monitors the internal state of the bushing in real time, and manages the heat energy distribution and changes during its operation in a refined manner, effectively distinguishing the different links of power use and heat energy dissipation, and providing an important basis for further failure mode identification and preventive measures. The insulation detection component rigorously evaluates the insulation performance of the high-voltage bushing through technical means, ensuring its reliable insulation characteristics under high-voltage conditions, and providing a strong guarantee for the safety and stability of electrical equipment. The comprehensive application of this equipment not only simplifies the process of high-voltage bushing performance testing and improves the detection efficiency, but also reaches a higher level in safety, accuracy and comprehensiveness.

[0021] When the clamping and positioning assembly is used specifically, the output end of the hydraulic cylinder is extended to drive the first connecting block to move in a direction away from the mounting plate, and the movable blocks on the connecting block move in directions approaching each other. The first connecting rod uses the first pin as a fixed hinge point, and the second pin follows the movement of the first movable block to drive the first connecting rod to change its angle, and the second pin drives the second connecting rod to change its angle. The Z-shaped plate changes its position due to the change in the position of the third pin, and the first positioning blocks fixedly connected at the ends of the Z-shaped plate approach each other, clamping and positioning the high-voltage bushing to be tested, and vertically positioning and fixing the high-voltage bushing to be tested, thereby ensuring stability and accuracy during the testing process and avoiding any potential impact of any minor disturbance on the test results.

[0022] When the temperature measurement component is used, the recorder is installed on the upper end of the C-shaped plate on the left side, one end of the measuring line is connected to the recorder, and the other end of the measuring line is connected to the high-voltage bushing. Multiple temperature measuring points are set on the high-voltage bushing to be tested, and temperature measuring holes are opened at the temperature measuring points. One end of the measuring line is buried in the temperature measuring hole where the temperature measurement is required. The measuring line is used to measure the temperature of the temperature measuring point. Temperature measuring holes are specially designed around multiple key positions of the high-voltage bushing. These holes are carefully arranged according to actual needs to ensure that all key temperature measuring points can be covered. The measuring line is inserted into these holes and directly contacts the area to be monitored, which can quickly and accurately capture and transmit the real-time temperature change information of each temperature measuring point. This design not only improves the accuracy and reliability of the measurement, but also greatly simplifies the on-site operation process and enhances the overall practicality of the system.

[0023] When the insulation detection component is used specifically, the component can directly and accurately evaluate the insulation performance of the high-voltage bushing by virtue of the wired connection characteristics of one end of the component and the high-voltage bushing to be tested. When the high-voltage bushing is connected to the insulation diagnostic instrument by wire, the insulation diagnostic instrument can monitor and obtain the insulation value of the bushing in real time. Subsequently, after being processed by an efficient internal algorithm, the data is transmitted to the display device, and the detailed information and status of the insulation performance are intuitively displayed in the form of charts, numerical values, etc. This design not only reduces the lengthy data recording and analysis time in traditional testing methods, but also can provide timely feedback on test results, making it easier for operators to quickly judge the insulation condition of the high-voltage bushing, and then take corresponding maintenance and rectification measures to ensure the stability and safe operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation of the present invention or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the present invention from a top view;

[0027] Figure 3 It is a schematic diagram of the structure of the clamping and positioning assembly of the present invention when it is not used in conjunction with the high-voltage bushing to be tested;

[0028] Figure 4 It is a schematic diagram of the structure of the clamping and positioning assembly of the present invention in a state of being used in cooperation with the high-voltage bushing to be tested;

[0029] Figure 5 It is a schematic diagram of the matching structure of the connecting block and the movable block of the present invention;

[0030] The markings in the accompanying drawings are:

[0031] 1. Clamping and positioning assembly, 2. Oil tank assembly, 3. Temperature measuring assembly, 4. Insulation detection assembly, 101. Mounting plate, 102. Mounting groove, 103. Hydraulic cylinder, 104. Connecting block, 105. Movable block, 106. C-shaped plate, 107. First pin shaft, 108. Second pin shaft, 109. First connecting rod, 110. Z-shaped plate, 111. Third pin shaft, 112. Second connecting rod, 113. Positioning block, 201. Liquid containing tank, 202. Cover, 301. Measuring line, 302. Recorder, 401. Insulation diagnostic instrument, 402. Display device, 5. High-voltage bushing to be tested. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical scheme in the specific implementation mode of the present invention is clearly and completely described below to further illustrate the present invention. Obviously, the specific implementation mode described is only a part of the implementation mode of the present invention, rather than all styles.

[0033] The following is combined with Figure 1-5 The present invention is described in further detail.

[0034] Embodiment 1:

[0035] A performance testing device for a high-voltage bushing, comprising a clamping and positioning component 1, an oil tank component 2, a temperature measuring component 3 and an insulation testing component 4;

[0036] The oil tank assembly 2 includes a liquid containing tank 201, and a cover 202 is provided at the upper end of the liquid containing tank 201. The bottom of the high-voltage bushing 5 to be tested passes through the through hole of the cover 202 and is immersed in the oil in the liquid containing tank 201. The oil is used to provide an insulating environment for the high-voltage bushing 5 to be tested.

[0037] The clamping and positioning assembly 1 is installed at the upper end of the cover 202 and is used to vertically position and fix the high-voltage bushing 5 to be tested;

[0038] The temperature measuring component 3 is used to measure the temperature inside the high-voltage bushing 5 to be tested;

[0039] The insulation detection assembly 4 is used to detect the insulation of the high-voltage bushing 5 to be detected.

[0040] By placing the high-voltage bushing 5 to be tested in the oil tank assembly 2 and using special oil to build a stable insulation environment for it, not only the insulation performance test conditions under high-voltage environment are ensured, but also a reliable basis is provided for the subsequent thermal energy impact analysis. The clamping and positioning assembly 1 accurately fixes the bushing, ensuring the stability and accuracy during the test process and avoiding any potential impact of any small disturbance on the test results. The temperature measurement assembly 3 monitors the internal state of the bushing in real time, and manages the heat energy distribution and changes during its operation in a refined manner, effectively distinguishing the different links of power use and heat energy dissipation, and providing an important basis for further failure mode identification and preventive measures. The insulation detection assembly 4 rigorously evaluates the insulation performance of the high-voltage bushing through technical means, ensuring its reliable insulation characteristics under high-voltage conditions, and providing a strong guarantee for the safety and stability of electrical equipment. The comprehensive application of this equipment not only simplifies the process of high-voltage bushing performance testing and improves the detection efficiency, but also reaches a higher level in safety, accuracy and comprehensiveness.

[0041] In this embodiment, the clamping and positioning assembly 1 includes a mounting plate 101, which is mounted on the upper surface of the cover 202. The mounting plate 101 is provided with a mounting groove 102, and a hydraulic cylinder 103 is installed in the mounting groove 102. The output end of the hydraulic cylinder 103 passes through one side of the mounting plate 101, and a connecting block 104 is installed at the output end of the hydraulic cylinder 103. The two ends of the connecting block 104 are movably sleeved with movable blocks 105. Both ends of the mounting plate 101 are installed with C-shaped plates 106, and the upper surface of the C-shaped plate 106 is A first pin shaft 107 is fixedly connected to the surface, a second pin shaft 108 is fixedly installed on the upper and lower surfaces of the movable block 105, a first connecting rod 109 is movably connected between the first pin shaft 107 and the second pin shaft 108, a Z-shaped plate 110 is movably connected to the inside of one end of the C-shaped plate 106, a third pin shaft 111 is penetrated on the Z-shaped plate 110, a second connecting rod 112 is movably connected between the third pin shaft 111 and the second pin shaft 108, and a positioning block 113 is fixedly connected to the end of the Z-shaped plate 110.

[0042] like Figure 3-4 As shown, when the clamping and positioning assembly is specifically used, the output end of the hydraulic cylinder 103 is extended to drive the connecting block 104 to move in a direction away from the mounting plate 101, and the movable block 105 on the connecting block 104 moves in a direction approaching each other. The first connecting rod 109 uses the first pin 107 as a fixed hinge point, and the second pin 108 follows the movement of the first movable block 105 to drive the first connecting rod 109 to change its angle, and the second pin 108 drives the second connecting rod 112 to change its angle, and the Z-shaped plate 110 changes its position due to the position change of the third pin 111. The positioning blocks 113 fixedly connected to the ends of the Z-shaped plate 110 are close to each other, and the high-voltage bushing 5 to be tested is clamped and positioned, and the high-voltage bushing 5 to be tested is vertically positioned and fixed, thereby ensuring stability and accuracy during the detection process and avoiding any potential influence of any small disturbance on the detection result.

[0043] In the present embodiment, the opposite side of the positioning block 113 is an arc surface, and the curvature is adapted to the curvature of the high-voltage bushing 5 to be tested. The adaptation design of the arc surface is similar to tailor-made, which ensures the stability and accuracy of each measurement or test. Even in the case of irregular deformation of the high-voltage bushing or slight differences between different batches, reliable data can be obtained through this precise positioning. This design can not only simplify the detection process and reduce the impact of human errors, but also greatly enhance the versatility and adaptability of the system, and is suitable for high-voltage bushings of various models and specifications, thereby improving the economic benefits and social value of the detection system, and providing strong technical support for the quality control and performance evaluation of the high-voltage bushing.

[0044] In the present embodiment, the positioning block 113 is made of silicone. First, the silicone material, with its excellent physical properties, ensures the stability and reliability of the positioning block 113 in various working environments. This means that whether in daily operation or in the face of external force impacts of different intensities, the positioning block 113 can maintain good positioning accuracy and provide efficient work support. Secondly, the elasticity and flexibility of silicone itself enable the positioning block 113 to adapt to the needs of various shapes and sizes, enhance its matching degree between different devices or objects, thereby improving the scope of application and functionality of the product. At the same time, the positioning block 113 of this type of material is easy to operate, easy to clean and maintain, and further improves the efficiency of use. In addition, the non-toxic and environmentally friendly characteristics of silicone provide guarantees for the safe use and sustainable development of the product.

[0045] In this embodiment, if Figure 3 As shown, the angle between the second connecting rod 112 and the central axis of the movable block 105 is set to θ, the value range of θ is 22°-47°, the distance moved by the movable block 105 on the connecting block 104 is L1, the distance moved by the positioning block 113 in the horizontal direction is L2, and θ, L1 and L2 satisfy the following relationship:

[0046] 1 / 5α·sinθ[L1·L2 / (L1+L2)] 1 / 2 ≤F≤2 / 3α·sinθ[L1·L2 / (L1+L2)] 1 / 2 ;

[0047] Wherein, α is the adjustment coefficient, the value range is 15-32, and F is the pressure of the positioning block 113 on the high-voltage bushing 5 to be tested.

[0048] By reasonably setting the included angle θ between the second connecting rod 112 and the central axis of the movable block 105 between 22° and 47°, the moving distance L1 of the movable block 105 on the connecting block 104, and the moving distance L2 of the positioning block 113 in the horizontal direction, and selecting a suitable adjustment coefficient α in the range of 15 to 32, this design ensures that under the pressure of the positioning block 113 on the high-voltage bushing 5 to be tested, the overall stability of the clamping and positioning is significantly improved. If the obtained value of F is too large, the positioning block 113 will squeeze the high-voltage bushing 5 to be tested, which may cause the outer part of the high-voltage bushing 5 to be tested to be squeezed and deformed. If the obtained value of F is too small, the clamping and positioning effect of the positioning block 113 on the high-voltage bushing 5 to be tested will be poor, and the stable support and clamping effect will not be achieved. By controlling and optimizing the relationship between these parameters, the value of the pressure F of the positioning block 113 on the high-voltage bushing 5 to be tested is reasonably limited, thereby effectively reducing the energy loss during operation and achieving the goal of energy saving and high efficiency.

[0049] In this embodiment, the temperature measurement assembly 3 includes a measuring line 301 and a recorder 302. The recorder 302 is installed at the upper end of the C-shaped plate 106 on the left side. One end of the measuring line 301 is connected to the recorder 302, and the other end of the measuring line 301 is connected to the high-voltage bushing. A plurality of temperature measuring points are set on the high-voltage bushing 5 to be detected, and a temperature measuring hole is opened at the temperature measuring point. One end of the measuring line 301 is buried in the temperature measuring hole where the temperature measurement is required. The measuring line 301 is used to measure the temperature of the temperature measuring point. The temperature measuring holes are specially designed around the key positions of the high-voltage bushing. These holes are carefully arranged according to actual needs to ensure that all key temperature measuring points can be covered. The measuring line 301 is inserted into these holes and directly contacts the area to be monitored, so that the real-time temperature change information of each temperature measuring point can be quickly and accurately captured and transmitted. This design not only improves the accuracy and reliability of the measurement, but also greatly simplifies the on-site operation process and enhances the overall practicality of the system.

[0050] The outside of the liquid tank 201 is connected to an oil filter, which heats the oil in the liquid tank 201 and circulates the oil, so that the oil is maintained within a range of 60°C higher than the ambient temperature. Before the test begins, the high-voltage bushing 5 to be tested is filled with SF6 gas at the lowest operating pressure. SF6, also known as sulfur hexafluoride, is an inorganic compound with a molecular weight of 146.055 and is gaseous at normal temperature and pressure. Its density is about 5 times that of air, and its molecular structure is octahedral, with a small bonding distance and high bonding energy, so it has high stability. SF6 has good compatibility with electrical structural materials when the temperature does not exceed 180°C.

[0051] As an exemplary preferred scheme, 64 temperature measuring points are set, among which temperature measuring points 1 to 24 are used to measure the temperature of the current-carrying conduit, and 24 temperature measuring points are arranged along the outer peripheral wall of the current-carrying conduit; temperature measuring points 25 to 26 are used to measure the temperature of the terminal at the bottom end of the high-voltage bushing 5 to be tested; temperature measuring point 27 is used to measure the temperature of the oil; temperature measuring points 28 to 54 are used to measure the temperature of the core surface and the inside; temperature measuring points 55 to 56 are used to measure the temperature of the SF6 gas at the top end of the high-voltage bushing 5 to be tested; temperature measuring points 57 to 60 are used to measure the temperature of the outside of the hollow composite insulator of the first high-voltage bushing 101; temperature measuring points 61 to 62 are used to measure the temperature of the terminal at the top end of the high-voltage bushing 5 to be tested; temperature measuring points 63 to 64 are used to measure the temperature of the surrounding environment.

[0052] In this embodiment, the measurement line 301 adopts a T-type thermocouple wire, and the optimal temperature measurement range of the T-type thermocouple wire is 0°C to 150°C. The T-type thermocouple wire can provide accurate temperature feedback, helping users to adjust and optimize the work process in a timely manner, and improve production efficiency and product quality. Secondly, its excellent performance in a lower temperature range enables accurate temperature maintenance in fields that require precise low-temperature control, ensuring the safety and effectiveness of the working process. At the same time, the linear characteristics of the T-type thermocouple wire make it an indispensable component in a variety of temperature sensor systems, and it can achieve sensitive capture and rapid response to temperature changes, and timely and accurate regulation of the system. Through its stable performance and precise measurement range, this measurement method ensures the reliability of data and the convenience of operation, saving time and resources for users.

[0053] In this embodiment, the insulation detection component 4 includes an insulation diagnostic instrument 401 and a display device 402. One end of the insulation diagnostic instrument 401 is connected to the high-voltage bushing 5 to be detected by wire, and the other end of the insulation diagnostic instrument 401 is connected to the display device 402. The insulation diagnostic instrument 401 and the display device 402 are both installed on the upper end of the C-shaped plate 106 on the right. By installing the practical and intuitive insulation diagnostic instrument 401 and the display device 402 integrated on the C-shaped plate 106 on the right, the efficiency and accuracy of the high-voltage bushing insulation test are significantly improved. Specifically, the component can directly and accurately evaluate the insulation performance of the high-voltage bushing by virtue of the wired connection characteristics of one end of the component and the high-voltage bushing 5 to be detected. When the high-voltage bushing is connected to the insulation diagnostic instrument 401 by wire, the insulation diagnostic instrument 401 can monitor and obtain the insulation value of the bushing in real time. Subsequently, after being processed by an efficient internal algorithm, the data is transmitted to the display device 402, and the detailed information and status of the insulation performance are intuitively displayed in the form of charts, numerical values, etc. This design not only reduces the lengthy data recording and analysis time in traditional testing methods, but also provides timely feedback on test results, allowing operators to quickly determine the insulation condition of the high-voltage bushing and take appropriate maintenance and rectification measures to ensure the stable and safe operation of the power system.

[0054] In this embodiment, the insulation diagnostic instrument 401 performs FDS insulation characteristic measurement and PDC test on the high-voltage bushing 5 to be tested. The FDS insulation characteristic measurement includes dielectric loss factor, capacitance, and frequency domain dielectric spectrum; the PDC test includes absorption ratio and polarization / depolarization current. The FDS insulation characteristic measurement can carefully explore the electric field distribution and discharge of the insulating medium inside the high-voltage bushing, revealing the potential defects of electrical equipment, such as corona discharge, partial discharge, etc., so that the problem can be detected and handled before it potentially evolves into a fault that seriously affects the operation of the equipment, thereby effectively extending the service life and operational reliability of the high-voltage bushing. At the same time, the PDC test further analyzes the long-term electrical performance stability of the high-voltage bushing, ensuring that its insulation strength and safety are not reduced during long-term operation, and ensuring stable, safe and efficient operation of the equipment. The combination of the two not only improves the accuracy and speed of fault diagnosis, but also greatly reduces the cost of equipment maintenance and fault handling.

[0055] The working principle of the present invention is as follows: A performance testing device for high-voltage bushings, by placing the high-voltage bushing 5 to be tested in the oil tank assembly 2, and using special oil to build a stable insulation environment for it, not only ensures the insulation performance testing conditions under high-voltage environment, but also provides a reliable basis for subsequent thermal energy impact analysis. The clamping and positioning assembly 1 accurately fixes the bushing, ensuring the stability and accuracy during the detection process, and avoiding the potential impact of any small disturbance on the detection results. The temperature measurement assembly 3 monitors the internal state of the bushing in real time, and conducts fine management of the heat energy distribution and changes during its operation, effectively distinguishing the different links of power use and heat energy dissipation, and providing an important basis for further failure mode identification and preventive measures. The insulation detection assembly 4 rigorously evaluates the insulation performance of the high-voltage bushing through technical means, ensures its reliable insulation characteristics under high-voltage conditions, and provides a strong guarantee for the safety and stability of electrical equipment. The comprehensive application of this equipment not only simplifies the process of high-voltage bushing performance testing and improves the detection efficiency, but also reaches a higher level in safety, accuracy and comprehensiveness.

[0056] When the clamping and positioning assembly is used specifically, the output end of the hydraulic cylinder 103 is extended to drive the first connecting block 104 to move in a direction away from the mounting plate 101, and the movable block 105 on the connecting block 104 moves in a direction approaching each other. The first connecting rod 109 uses the first pin 107 as a fixed hinge point, and the second pin 108 follows the movement of the first movable block 105 to drive the first connecting rod 109 to change its angle, and the second pin 108 drives the second connecting rod 112 to change its angle, and the Z-shaped plate 110 changes its position due to the position change of the third pin 111. The first positioning blocks 113 fixedly connected to the ends of the Z-shaped plate 110 are close to each other, and the high-voltage bushing 5 to be tested is clamped and positioned, and the high-voltage bushing 5 to be tested is vertically positioned and fixed, thereby ensuring stability and accuracy during the detection process and avoiding any potential influence of any small disturbance on the detection result.

[0057] The temperature measurement assembly 3 includes a measuring line 301 and a recorder 302. When the temperature measurement assembly 3 is used, the recorder 302 is installed on the upper end of the C-shaped plate 106 on the left side, one end of the measuring line 301 is connected to the recorder 302, and the other end of the measuring line 301 is connected to the high-voltage bushing. A plurality of temperature measuring points are set on the high-voltage bushing 5 to be detected, and a temperature measuring hole is opened at the temperature measuring point. One end of the measuring line 301 is buried in the temperature measuring hole where the temperature measurement is required. The measuring line 301 is used to measure the temperature of the temperature measuring point. The temperature measuring holes are specially designed around the key positions of the high-voltage bushing. These holes are carefully arranged according to actual needs to ensure that all key temperature measuring points can be covered. The measuring line 301 is inserted into these holes and directly contacts the area to be monitored, so that the real-time temperature change information of each temperature measuring point can be quickly and accurately captured and transmitted. This design not only improves the accuracy and reliability of the measurement, but also greatly simplifies the on-site operation process and enhances the overall practicality of the system.

[0058] The insulation detection component 4 includes an insulation diagnostic instrument 401 and a display device 402. One end of the insulation diagnostic instrument 401 is connected to the high-voltage bushing 5 to be detected by wire, and the other end of the insulation diagnostic instrument 401 is connected to the display device 402. The insulation diagnostic instrument 401 and the display device 402 are both installed on the upper end of the C-shaped plate 106 on the right. By installing the practical and intuitive insulation diagnostic instrument 401 and the display device 402 integrated on the C-shaped plate 106 on the right, the efficiency and accuracy of the high-voltage bushing insulation test are significantly improved. When the insulation detection component 4 is used specifically, the component can directly and accurately evaluate the insulation performance of the high-voltage bushing by virtue of the wired connection characteristics of one end of the component and the high-voltage bushing 5 to be detected. When the high-voltage bushing is connected to the insulation diagnostic instrument 401 by wire, the insulation diagnostic instrument 401 can monitor and obtain the insulation value of the bushing in real time. Subsequently, after being processed by an efficient internal algorithm, the data is transmitted to the display device 402, and the detailed information and status of the insulation performance are intuitively displayed in the form of charts, numerical values, etc. This design not only reduces the lengthy data recording and analysis time in traditional testing methods, but also provides timely feedback on test results, allowing operators to quickly determine the insulation condition of the high-voltage bushing and take appropriate maintenance and rectification measures to ensure the stable and safe operation of the power system.

[0059] It should be noted that, according to the needs of implementation, the various components described in the embodiments of the present invention can be split into more components, and two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the present invention. The above embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be noted that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A performance testing device for a high voltage bushing, characterized in that: It comprises a clamping and positioning component (1), an oil tank component (2), a temperature measuring component (3) and an insulation detection component (4); The oil tank assembly (2) comprises a liquid containing tank (201), the upper end of the liquid containing tank (201) is provided with a sealing cover (202), the bottom of the high-voltage bushing (5) to be tested passes through the sealing cover (202) through a through hole of the sealing cover (202) and is immersed in the oil in the liquid containing tank (201), and the oil is used to provide an insulating environment for the high-voltage bushing (5) to be tested; The clamping and positioning assembly (1) is installed at the upper end of the cover (202) and is used to vertically position and fix the high-voltage bushing (5) to be tested; The temperature measuring component (3) is used to measure the temperature inside the high-voltage bushing (5) to be tested; The insulation detection component (4) is used to detect the insulation of the high-voltage bushing (5) to be detected.

2. A performance testing device for a high voltage bushing according to claim 1, characterized in that: The clamping and positioning assembly (1) comprises a mounting plate (101), wherein the mounting plate (101) is arranged on the upper surface of the sealing cover (202), wherein a mounting groove (102) is provided on the mounting plate (101), wherein a hydraulic cylinder (103) is provided in the mounting groove (102), wherein an output end of the hydraulic cylinder (103) passes through one side of the mounting plate (101), wherein a connecting block (104) is provided at the output end of the hydraulic cylinder (103), wherein movable blocks (105) are sleeved at both ends of the connecting block (104), wherein both ends of the mounting plate (101) are provided with C-shaped plates (106), wherein the C-shaped plates (106) are provided with a plurality of movable blocks (105) and a plurality of movable blocks (105) are sleeved at both ends of the mounting plate (101). A first pin shaft (107) is provided on the upper surface, and a second pin shaft (108) is provided on the upper surface and the lower surface of the movable block (105); a first connecting rod (109) is movably connected between the first pin shaft (107) and the second pin shaft (108); a Z-shaped plate (110) is movably connected thereto through one end of the C-shaped plate (106); a third pin shaft (111) is provided through the Z-shaped plate (110); a second connecting rod (112) is movably connected between the third pin shaft (111) and the second pin shaft (108); and a positioning block (113) is fixedly connected to the end of the Z-shaped plate (110).

3. A performance testing device for a high voltage bushing according to claim 2, characterized in that: The temperature measurement assembly (3) comprises a measuring line (301) and a recorder (302); the recorder (302) is mounted on the upper end of the left C-shaped plate (106); one end of the measuring line (301) is connected to the recorder (302); the other end of the measuring line (301) is connected to the high-voltage bushing; a plurality of temperature measuring points are arranged on the high-voltage bushing (5) to be tested, and temperature measuring holes are opened at the temperature measuring points; one end of the measuring line (301) is buried in the temperature measuring hole where temperature measurement is required; and the measuring line (301) is used to measure the temperature of the temperature measuring point.

4. The performance testing device for high voltage bushing according to claim 2, characterized in that: The insulation detection component (4) comprises an insulation diagnostic instrument (401) and a display device (402); one end of the insulation diagnostic instrument (401) is connected to the high-voltage bushing (5) to be detected by wire, and the other end of the insulation diagnostic instrument (401) is connected to the display device (402); the insulation diagnostic instrument (401) and the display device (402) are both mounted on the upper end of the C-shaped plate (106) on the right side.

5. The performance testing device for high voltage bushing according to claim 2, characterized in that: The opposite side surfaces of the positioning block (113) are arc surfaces.

6. The performance testing device for high voltage bushing according to claim 2, characterized in that: The material of the positioning block (113) is silica gel.

7. The performance testing device for high voltage bushing according to claim 3, characterized in that: The measuring wire (301) is a T-type thermocouple wire, and the optimal temperature measurement range of the T-type thermocouple wire is 0°C to 150°C.

8. The performance testing device for high voltage bushing according to claim 1, characterized in that: The outside of the liquid containing tank (201) is connected to an oil filter, which heats the oil in the liquid containing tank (201) and circulates the oil, so that the oil is maintained within a range of 60° C. higher than the ambient temperature.

9. The performance testing device for high voltage bushing according to claim 4, characterized in that: The insulation diagnostic instrument (401) performs FDS insulation property measurement and PDC test on the high-voltage bushing (5) to be inspected.

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