CN113640623B - Device and method for detecting degradation of insulator of flexible crawler-type power transmission line - Google Patents
Device and method for detecting degradation of insulator of flexible crawler-type power transmission line Download PDFInfo
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- 239000012212 insulator Substances 0.000 title claims abstract description 95
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- 238000006731 degradation reaction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 132
- 230000007246 mechanism Effects 0.000 claims abstract description 132
- 230000005684 electric field Effects 0.000 claims abstract description 77
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 6
- 230000000712 assembly Effects 0.000 claims description 22
- 238000000429 assembly Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 20
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 10
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- 238000004140 cleaning Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009193 crawling Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 210000003734 kidney Anatomy 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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Abstract
The invention discloses a device and a method for detecting the degradation of a flexible crawler-type power transmission line insulator, wherein the detection method is realized based on a detection device, the detection device comprises an upper guide mechanism and a lower guide mechanism which are connected through screw rod connecting mechanisms at two sides, an electric field detection mechanism for collecting electric field intensity is arranged on the upper guide mechanism, and flexible crawler mechanisms for axially running on a power transmission line porcelain insulator structure are respectively arranged on the upper guide mechanisms at the left side and the right side of the electric field detection mechanism through left mounting plates and right mounting plates; the lower guide mechanism is provided with a control mechanism for controlling the detection device to detect the insulator string, and the control mechanism is electrically connected with the electric field detection mechanism. The invention is based on a flexible crawler crawling mechanism, carries an electric field sensor, adopts an openable semicircular assembly structure, detects the electric field of the insulator along the axial direction of the insulator string, judges the degradation condition of the insulator through the strength of a background electric field, and can be suitable for various insulator string structures.
Description
Technical Field
The invention relates to the technical field of power transmission line detection, in particular to a device and a method for detecting degradation of a flexible crawler-type power transmission line insulator.
Background
The degradation insulator of the live detection line has become one of the problems of great concern to the power departments at home and abroad, and at present, the degradation detection of the insulator of the power transmission line only needs to have the following methods: 1) The direct observation method has unreliable ground observation and is difficult to see crack defects when climbing a tower; 2) The spark fork detection method is simple and visual, has a small number of suitable insulators, has a detection effect on the influence of background corona on 500kV and above, has high single-chip detection labor intensity and has large workload; 3) The ultraviolet imaging method needs to be operated at night and in a positive temperature environment, the detection result is easily affected by an observation angle, and the equipment is expensive; 4) Infrared imaging is easily affected by sunlight, moisture, ambient temperature and some factors causing surface temperature change of insulators; 5) The ultrasonic method has the limitations of coupling, attenuation and ultrasonic transducer performance, long-distance telemetry is not broken through, and the method is not suitable for field detection; 6) The hydrophobicity detection method is only remained in the experimental stage, and the surface analysis and test of the insulator under the condition of lack of complexity are carried out; 7) The leakage current observation method has the advantages that the leakage current along the surface of the insulator is related to the effective pollution degree and hydrophobicity, and the limitation is larger; 8) The distributed voltage detection method needs a single insulator to contact the steel foot sensing cap, so that the labor intensity is high and the workload is high; 9) The electric field distribution method has low cost, direct observation, simple operation and higher detection efficiency.
The detection methods are mainly carried out by using an insulating operation rod, but the detection of the long pieces of the 500kV insulator chain is carried out by matching the operation rod with the detection of the conventional spark fork, the distributed electric field and the distributed voltage, and the problems of large disturbance degree, heavy weight, high operation difficulty, large physical consumption of operators, limited operation and extension space on a pole tower and the like of the conventional insulating telescopic rod are solved. Secondly, an auxiliary detection device is adopted, so that the detection operation intensity is reduced, but the installation and debugging time is long, the tools are more, and the method is not suitable for the terrain complex region of the 500kV transmission line. Finally, an insulator detection robot is researched at home and abroad, and the Hunan extra-high voltage insulator detection robot adopts a voltage contact measurement mode to detect the insulator and needs single-chip contact measurement; shandong Luneng adopts double insulator string detection, and only double insulator string detection is limited; the electric field detection robot with arm type is designed by Wuhan Kedi ao electric power science and technology limited company, and insulator detection is carried out by adopting a single-chip crawling mode. Therefore, the detection by using the robot generally has the problems of higher cost, large application limitation, low detection efficiency and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for detecting the degradation of a flexible crawler-type power transmission line insulator, which are applicable to various insulator string structures and improve the detection efficiency.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
The utility model provides a flexible crawler-type transmission line insulator degradation detection device, includes through the lead screw coupling mechanism connection of both sides, is used for wrapping the upper guide mechanism and the lower guide mechanism of insulator chain, is provided with the electric field detection mechanism that is used for gathering electric field intensity on the upper guide mechanism, is provided with the flexible crawler-type mechanism that is used for carrying out axial operation on transmission line porcelain insulator structure through two mounting panels about respectively on the upper guide mechanism that is located electric field detection mechanism left and right sides; the lower guide mechanism is provided with a control mechanism for controlling the detection device to detect the insulator string, and the control mechanism is electrically connected with the electric field detection mechanism.
Above-mentioned flexible crawler-type transmission line insulator degradation detection device, electric field detection mechanism is including being used for sending trigger signal's photoelectric sensor and the electric field sensor who is used for detecting electric field intensity to the insulator, and electric field sensor's output passes through the input of shielding line connection control mechanism, and the input of photoelectric sensor is connected through the shielding line to control mechanism's output.
The flexible crawler-type power transmission line insulator degradation detection device comprises a group of driving wheel assemblies and four groups of auxiliary wheel assemblies, wherein the group of driving wheel assemblies and the four groups of auxiliary wheel assemblies are arranged at the upper ends of the end parts of two mounting plates, the three groups of auxiliary wheel assemblies are uniformly distributed below the middle parts of the mounting plates, the other group of auxiliary wheel assemblies are arranged at the other ends of the mounting plates and are in the same horizontal plane with the driving wheel assemblies, and crawler belts are sleeved on the driving wheel assemblies and the auxiliary wheel assemblies; the side end of the mounting plate is provided with a direct current motor for driving the driving wheel assembly to rotate, and the input end of the direct current motor is connected with the output end of the control mechanism.
Above-mentioned flexible crawler-type transmission line insulator degradation detection device, the kidney round hole that is located the bottom is set up on the mounting panel through upper and lower respectively to be located the auxiliary wheel subassembly of tip, the kidney round hole that is located the tip is set up on the mounting panel through controlling, the pivot of connecting the auxiliary wheel wears to establish in controlling relative kidney round hole, the both ends of pivot are connected with the round pin axle respectively, epaxial cover is equipped with the installation round hole of fixing on the mounting panel, epaxial three is used for carrying out spacing axle card to the round pin axle that is provided with, the axle center of pivot is located between two adjacent axle cards, be provided with the spring that is used for supporting between two other adjacent axle cards.
According to the degradation detection device for the flexible crawler-type power transmission line insulator, the upper guide mechanism is provided with the electric field detection mechanism installation position for installing the electric field detection mechanism and the flexible crawler installation position for installing the flexible crawler mechanism.
Above-mentioned flexible crawler-type transmission line insulator degradation detection device, go up guiding mechanism and lower guiding mechanism's border all is provided with the turn-ups that are used for guaranteeing steady direction when insulator string sag, goes up guiding mechanism and lower guiding mechanism's middle part all is provided with the strengthening rib that is used for guaranteeing intensity.
Above-mentioned flexible crawler-type transmission line insulator degradation detection device, control mechanism is including the lithium cell that is used for providing the power, be used for data processing and the data processing module of control and be used for carrying out the bluetooth module of communication with the backstage, the power input of data processing module is connected to the output of lithium cell, electric field sensor's output is connected to data processing module's input, photoelectric sensor and direct current motor's input are connected respectively to data processing module's output, bluetooth module is connected to data processing module's communication end, bluetooth module carries out bluetooth communication with the backstage.
The method for detecting the degradation of the flexible crawler-type power transmission line insulator is realized based on a device for detecting the degradation of the flexible crawler-type power transmission line insulator, and specifically comprises the following steps of:
A. ensuring the sufficient electric quantity of the lithium battery of the detection device and checking whether all parts are intact;
B. the detection device is carried by a detection person or is transmitted to a cross arm by a person under the tower;
C. Opening a lower guide mechanism of the detection device, and connecting the upper guide structure with the lower guide mechanism through a screw rod connecting mechanism to ensure that the detection device is attached to the insulator string of the power transmission line;
D. the control mechanism is connected with the power line and the signal line of the electric field detection mechanism, and the detection device is started;
E. The detection device is controlled by background software to run along the axial direction of the insulator string, the detection device automatically measures the electric field intensity of the insulator until the detection of the whole string of insulators is completed, the background software checks the electric field curve of the insulator string, and whether the insulator degradation condition exists or not is judged by the electric field curve;
F. after the checking is finished, the detection device returns, and the detection is performed again in the returning process;
G. and (3) returning the special detection tool to the cross arm, stopping the detection device, taking down the detection device, cleaning the field, and putting down the tower to finish the detection operation of the insulator of the power transmission line.
By adopting the technical scheme, the invention has the following technical progress.
The invention is based on a flexible crawler crawling mechanism, carries an electric field sensor, adopts an openable semicircular assembly structure, detects the electric field of the insulator along the axial direction of the insulator string, judges the degradation condition of the insulator through the strength of the background electric field, can be suitable for various insulator string structures, and improves the detection efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of an electric field detection mechanism according to the present invention;
FIG. 3 is a schematic view of a flexible track mechanism according to the present invention;
FIG. 4 is a schematic view of an auxiliary wheel assembly according to the present invention;
FIG. 5 is a schematic view of the structure of the upper guide mechanism according to the present invention;
Wherein: 1. electric field detection mechanism, 2. Flexible track mechanism, 21. Mounting plate, 22. Drive wheel assembly, 23. DC motor, 24. Auxiliary wheel assembly, 241. Pin shaft, 242. Spring, 243. Axle clamp, 244. Axle center, 245. Mounting round hole, 246. Waist round hole, 25. Track, 3. Upper guide mechanism, 31. Electric field detection mechanism mounting position, 32. Photoelectric sensor mounting hole, 33. Flexible track mounting position, 34. Flange, 4. Lead screw connection mechanism, 5. Lower guide mechanism, 6. Control mechanism.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific embodiments.
The utility model provides a flexible crawler-type transmission line insulator degradation detection device, its structure is as shown in figure 1, includes electric field detection mechanism 1, flexible crawler-type mechanism 2, goes up guiding mechanism 3, lower guiding mechanism 5 and control mechanism 6. The upper guide mechanism 3 and the lower guide mechanism 5 are connected through screw rod connecting structures 4 on two sides, the electric field detection mechanism 1 is arranged on the upper guide mechanism 3 and used for collecting electric field intensity, the flexible crawler mechanism 2 is arranged on the upper guide mechanisms 3 on two sides of the electric field detection mechanism 1 and used for axially running on a porcelain insulator structure of a power transmission line, the control mechanism 6 is arranged on the lower guide mechanism 5 and used for controlling the detection device to detect insulator strings, and the control mechanism 6 is electrically connected with the electric field detection mechanism 1.
The electric field monitoring device 1 comprises a photoelectric sensor and an electric field sensor, wherein the photoelectric sensor is used for sending a trigger signal to the insulator, the electric field sensor is used for detecting the electric field intensity, the output end of the electric field sensor is connected with the input end of the control mechanism 6 through a shielding wire, and the output end of the control mechanism is connected with the input end of the photoelectric sensor through the shielding wire. The electric field sensor adopts a MEMS electric field sensor, the non-contact type detection of the space electric field between the steel foot steel caps of the single insulator is realized, and the MEMS sensor is made of silicon material and is based on the principle that a spring and a micro grid-shaped silicon structure which is fixed on the spring and used for measuring micron-sized movement are adopted. When the silicon structure is in an electric field, a certain force is generated on the silicon crystal, so that the spring is slightly expanded or compressed.
The schematic diagram of the electric field detection mechanism is shown in fig. 2, in which a mass (m) is suspended on an elastic element (stiffness k) which is fixed to a conductive fixed frame. When placed in an electric field (E), electrostatic induction produces a force (Fes) on the mass. The mass will generate a certain displacement (δx) under this force, and the displacement is measured by using the optical principle.
The photoelectric sensor adopts a finished product part, provides a detection trigger range of 5-16mm, ensures that the outermost umbrella skirt of each insulator is triggered when the robot system moves along the axial direction of the insulator, and provides a switching value for a background data processing module, and the electric field sensor records the electric field intensity at the moment.
The flexible crawler mechanism 2 is arranged on the upper guide mechanism 3 through mounting plates 21 on the left side and the right side, and the structure schematic diagram of the flexible crawler mechanism is shown in fig. 3-4, and comprises a driving wheel assembly 22, an auxiliary wheel assembly 24, a direct current motor 23 and a crawler belt 25. The driving wheel assembly 22 is arranged at the upper end of the end part of the mounting plate 21, the auxiliary wheel assemblies 24 are arranged into 4 groups, wherein three groups of auxiliary wheel assemblies are respectively uniformly distributed below the middle part of the mounting plate, and the other groups of auxiliary wheel assemblies are arranged on the other side of the mounting plate and on the same horizontal plane with the driving wheel assembly 22, and the caterpillar tracks 25 are sleeved on the driving wheel assembly and the auxiliary wheel assembly.
The mounting plates 21 on the left side and the right side of the upper guide mechanism 3 are integrated with the upper guide mechanism, and are made of ABS material, so that the mounting and supporting effects are achieved. The mounting plate 21 on one side is provided with a direct current motor 23, and the direct current motor is connected with the driving wheel assembly and used for driving the driving wheel assembly to rotate, and the input end of the direct current motor is connected with the output end of the control mechanism 6.
The three auxiliary wheel components at the bottom are respectively arranged on the mounting plate 21 through the upper and lower waist round holes 246, the three auxiliary wheel components 24 at the bottom can move up and down through the upper and lower waist round holes, the auxiliary wheel components at the end part are arranged on the mounting plate through the left and right waist round holes 246, the auxiliary wheel components at the end part can move left and right through the left and right waist round holes, the rotating shaft connected with the auxiliary wheel is penetrated in the left and right opposite waist round holes, the two ends of the rotating shaft are respectively connected with the pin shafts 241, the pin shafts 241 are sleeved with mounting round holes 245, the mounting round holes are fixed on the mounting plate 21, the pin shafts 241 can move back and forth in the mounting round holes, the pin shafts 241 are provided with three shaft clamps 243 for limiting the pin shafts, the pin shafts can be regulated in the waist round holes, the axle center 244 of the rotating shaft is positioned between two adjacent shaft clamps, and a spring is arranged between the other two adjacent shaft clamps to play a supporting role.
When the single or integral auxiliary wheel assembly at the bottom is pressed, the auxiliary wheel assemblies at the end part perform opposite movement compensation to ensure the tension of the integral crawler belt, so that the axial operation on the structure of the porcelain insulator of the power transmission line can be ensured, and meanwhile, the applicability operation detection effect can be achieved on insulators with different specifications and different diameters of different manufacturers of the power transmission line.
The upper guide mechanism is made of ABS engineering plastic, is designed into a semicircular band edge type, can be connected with the lower guide mechanism 5 through the screw rod connecting mechanism 4, and can be used for adjusting the connecting range of the device according to the disc diameter of the porcelain insulator of the power transmission line, so that the left and right contact points of the left and right flexible mechanisms can stably provide power output, and the arc vertical angle passing adaptive range exists along the axial running movable range and the tension string reasonably with the disc diameter of the insulator.
The structure schematic diagram of the upper guide mechanism 3 is shown in fig. 5, the upper guide mechanism 3 is provided with an electric field detection mechanism mounting position 31 and a flexible track mounting position 33, the electric field detection mechanism mounting position 31 is used for mounting an electric field detection mechanism, the flexible track mounting position 33 is used for mounting a flexible track mechanism, the center of the electric field detection mechanism mounting position 31 is provided with a photoelectric sensor detection hole 32, and the photoelectric sensor sends a trigger signal through the photoelectric sensor detection hole 32.
The edges of the upper guide mechanism 3 and the lower guide mechanism 5 are provided with flanges 34 for ensuring stable guide when the insulator string sags, and the middle parts of the upper guide mechanism and the lower guide mechanism are provided with reinforcing ribs for ensuring strength.
The control mechanism 6 comprises a lithium battery, a data processing module and a Bluetooth module, wherein the lithium battery is used for providing power for the detection device, the data processing module is used for data processing and control, the Bluetooth module is used for carrying out Bluetooth communication with the background, the output end of the lithium battery is connected with the power input end of the data processing module, the input end of the data processing module is connected with the output end of the electric field sensor, the output end of the data processing module is respectively connected with the input ends of the photoelectric sensor and the direct current motor, the communication end of the data processing module is connected with the Bluetooth module, and the Bluetooth module carries out Bluetooth communication with the background.
The method for detecting the degradation of the flexible crawler-type power transmission line insulator is realized by adopting a device for detecting the degradation of the flexible crawler-type power transmission line insulator, and specifically comprises the following steps of:
A. Before the power transmission line is overhauled, ensuring sufficient electric quantity of a lithium battery of the detection device, and checking whether all parts are intact;
B. the detection device is carried by a detection person or is transmitted to a cross arm by a person under the tower;
C. Opening a lower guide mechanism of the detection device, and connecting the upper guide structure with the lower guide mechanism through a screw rod connecting mechanism to ensure that the detection device is attached to the insulator string of the power transmission line;
D. the control mechanism is connected with the power line and the signal line of the electric field detection mechanism, and the detection device is started;
E. The detection device is controlled to axially run along the insulator string through background software, the electric field intensity of each insulator is automatically measured in the running process of the detection device, and an insulator electric field curve is displayed on the background software; stopping the detection device until the detection of the whole insulator string is completed, checking an electric field curve of the insulator string by background software, and judging whether the insulator degradation condition exists or not through the electric field curve;
F. After the checking of the insulator electric field curve is finished, the detection device returns, the insulator electric field curve detection is carried out again in the returning process, whether the insulator is deteriorated or not is further verified through the return electric field curve detection, and the existence of the deterioration is confirmed again;
G. and (3) returning the special detection tool to the cross arm, stopping the detection device, taking down the detection device, cleaning the field, and putting down the tower to finish the detection operation of the insulator of the power transmission line.
Claims (6)
1. A degradation detection device for a flexible crawler-type power transmission line insulator is characterized in that: the flexible crawler belt mechanism comprises an upper guide mechanism (3) and a lower guide mechanism (5) which are connected through screw rod connecting mechanisms (4) at two sides and are used for wrapping an insulator chain, wherein an electric field detection mechanism (1) for collecting electric field intensity is arranged on the upper guide mechanism (3), and flexible crawler belt mechanisms (2) which are used for axially running on a porcelain insulator structure of a power transmission line are respectively arranged on the upper guide mechanism (3) at the left side and the right side of the electric field detection mechanism (1) through left mounting plates and right mounting plates (21); the lower guide mechanism (5) is provided with a control mechanism (6) for controlling the detection device to detect the insulator string, and the control mechanism (6) is electrically connected with the electric field detection mechanism (1);
The flexible crawler mechanism (2) comprises a group of driving wheel assemblies (22) and four groups of auxiliary wheel assemblies (24) which are arranged at the upper ends of the end parts of two mounting plates (21), wherein the three groups of auxiliary wheel assemblies are uniformly distributed below the middle parts of the mounting plates, the other group of auxiliary wheel assemblies are arranged at the other ends of the mounting plates and are in the same horizontal plane with the driving wheel assemblies, and crawler belts (25) are sleeved on the driving wheel assemblies and the auxiliary wheel assemblies; the side end of the mounting plate (21) is provided with a direct current motor (23) for driving the driving wheel assembly (22) to rotate, and the input end of the direct current motor is connected with the output end of the control mechanism;
The three auxiliary wheel assemblies positioned at the bottom are respectively arranged on the mounting plate (21) through upper and lower waist round holes (246), the auxiliary wheel assemblies positioned at the end parts are arranged on the mounting plate (21) through left and right waist round holes (246), the rotating shafts for connecting the auxiliary wheels are arranged in the left and right opposite waist round holes (246) in a penetrating mode, the two ends of the rotating shafts are respectively connected with a pin shaft (241), the pin shafts (241) are sleeved with mounting round holes (245) fixed on the mounting plate (21), the pin shafts (241) are provided with three shaft clamps (243) for limiting the pin shafts, the axle center (244) of the rotating shafts is positioned between two adjacent shaft clamps, and springs (242) for supporting are arranged between the other two adjacent shaft clamps.
2. The degradation detection device for a flexible crawler-type power transmission line insulator according to claim 1, wherein: the electric field detection mechanism (1) comprises a photoelectric sensor for sending a trigger signal to the insulator and an electric field sensor for detecting the electric field intensity, wherein the output end of the electric field sensor is connected with the input end of the control mechanism (6) through a shielding wire, and the output end of the control mechanism is connected with the input end of the photoelectric sensor through the shielding wire.
3. The degradation detection device for a flexible crawler-type power transmission line insulator according to claim 1, wherein: the upper guide mechanism (3) is provided with an electric field detection mechanism installation position (31) for installing an electric field detection mechanism and a flexible track installation position (33) for installing a flexible track mechanism.
4. The degradation detection device for a flexible crawler-type power transmission line insulator according to claim 1, wherein: the edge of the upper guide mechanism (3) and the edge of the lower guide mechanism (5) are respectively provided with a flanging (34) used for guaranteeing stable guide when the insulator string sags, and the middle parts of the upper guide mechanism (3) and the lower guide mechanism (5) are respectively provided with a reinforcing rib used for guaranteeing strength.
5. The degradation detection device for a flexible crawler-type power transmission line insulator according to claim 1, wherein: the control mechanism (6) comprises a lithium battery for providing power, a data processing module for data processing and control and a Bluetooth module for communicating with the background, wherein the output end of the lithium battery is connected with the power input end of the data processing module, the input end of the data processing module is connected with the output end of the electric field sensor, the output end of the data processing module is respectively connected with the input ends of the photoelectric sensor and the direct current motor, the communication end of the data processing module is connected with the Bluetooth module, and the Bluetooth module is in Bluetooth communication with the background.
6. A degradation detection method for a flexible crawler-type power transmission line insulator is characterized by comprising the following steps of: the detection method is realized based on the flexible crawler-type power transmission line insulator degradation detection device according to any one of claims 1 to 5, and specifically comprises the following steps:
A. ensuring the sufficient electric quantity of the lithium battery of the detection device and checking whether all parts are intact;
B. the detection device is carried by a detection person or is transmitted to a cross arm by a person under the tower;
C. Opening a lower guide mechanism of the detection device, and connecting the upper guide structure with the lower guide mechanism through a screw rod connecting mechanism to ensure that the detection device is attached to the insulator string of the power transmission line;
D. the control mechanism is connected with the power line and the signal line of the electric field detection mechanism, and the detection device is started;
E. The detection device is controlled by background software to run along the axial direction of the insulator string, the detection device automatically measures the electric field intensity of the insulator until the detection of the whole string of insulators is completed, the background software checks the electric field curve of the insulator string, and whether the insulator degradation condition exists or not is judged by the electric field curve;
F. after the checking is finished, the detection device returns, and the detection is performed again in the returning process;
G. and (3) returning the special detection tool to the cross arm, stopping the detection device, taking down the detection device, cleaning the field, and putting down the tower to finish the detection operation of the insulator of the power transmission line.
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| CN202110257670.1A CN113640623B (en) | 2021-03-09 | 2021-03-09 | Device and method for detecting degradation of insulator of flexible crawler-type power transmission line |
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| CN202110257670.1A CN113640623B (en) | 2021-03-09 | 2021-03-09 | Device and method for detecting degradation of insulator of flexible crawler-type power transmission line |
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| CN116298700B (en) * | 2023-05-18 | 2024-05-28 | 北京鹏鹄物宇科技发展有限公司 | 5G-based power communication cable state monitoring system |
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