An on-pole circuit breaker detection system

Abstract

The present invention discloses a detection system for pole-mounted circuit breakers, which relates to the technical field of airtightness detection; to solve the accuracy problem; specifically includes: a data acquisition module, the data acquisition module is electrically connected to a pressure sensor and a laser rangefinder, and is used to collect the pressure detection data of the pressure sensor and the displacement detection data of the laser rangefinder; a central processing module, which processes the data of the data acquisition module and generates a leakage result; a control module. The present invention eliminates outliers from the air pressure data obtained by the pressure sensor and the laser rangefinder respectively, and then uses a weight-based calculation method to calculate the final leakage rate. On the one hand, it can prevent low data accuracy caused by the failure of a single or local pressure sensor and laser rangefinder. On the other hand, it can also make the importance of the pressure sensor and laser rangefinder to the final result through the setting of weights, increasing the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing detection, and particularly to a detection system for pole-mounted circuit breakers. Background Art

[0002] A pole-mounted circuit breaker refers to a circuit breaker installed and operated on an electric pole. The theoretical research level and manufacturing technology of various circuit breakers have made great progress. Especially for a vacuum type pole-mounted circuit breaker, the contact of its conductive rod is located in a vacuum chamber, which can effectively solve the arc problem during opening and closing.

[0003] Since there is no gas in the vacuum chamber of a vacuum circuit breaker, ionization cannot occur, thus achieving the function of arc extinguishing. This makes the arc extinguishing ability of a vacuum circuit breaker closely related to the vacuum degree of the vacuum chamber. Therefore, it is necessary to test the sealing performance of the vacuum chamber of a vacuum pole-mounted circuit breaker to detect its arc extinguishing ability.

[0004] In the prior art, for sealing detection, it is mostly carried out by placing it in a closed space, then applying positive pressure / negative pressure to the closed space and maintaining the pressure. During the maintenance process, the pressure change of the closed space is detected by a pressure sensor, so as to achieve the sealing detection of the vacuum chamber. However, due to the error of the pressure sensor itself, there will be a certain error during pressure measurement. Thus, for a relatively small leakage amount, the proportion of the error relative to the total leakage amount increases, resulting in a decrease in accuracy. At the same time, when the sensor acquires data, due to the failure of the sensor itself, there will be a large data acquisition error, leading to an increase in the overall detection error.

[0005] Therefore, the present invention proposes a detection system for pole-mounted circuit breakers. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art, and a detection system for pole-mounted circuit breakers is proposed.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A device used in a detection system for pole-mounted circuit breakers, including a base;

[0009] A sealing frame is arranged on the top of the base, and an electric door is arranged on the outer wall of the base on the opening side of the sealing frame. The base, the sealing frame, and the electric door form a closed space;

[0010] A gas pump for supplying air pressure to the closed space and a plurality of pressure sensors for detecting the air pressure in the closed space are arranged on the top of the sealing frame;

[0011] And a displacement pressure detection component is provided on the back of the sealing frame. The displacement pressure detection component includes a box body fixed to the top of the base and located in the enclosed space, and a plurality of connecting pipes fixedly connected and communicating with the box body. A liquid is placed in the inner cavity of the box body, and the inner cavity of the box body communicates with the enclosed space through a communication hole;

[0012] The top of the connecting pipe is open, an outer conical surface plug is slidably connected to the inner wall of the connecting pipe, and a laser rangefinder for detecting the position of the outer conical surface plug is provided at the top of the connecting pipe. The laser rangefinder is fixed to the side wall of the sealing frame through a fixing plate.

[0013] Preferably: An inner conical surface ring cooperating with the outer conical surface plug is fixed to the inner wall of the bottom of the connecting pipe.

[0014] Furthermore: A slide rail is fixed to the outer wall of the top of the base, and a support seat for supporting the circuit breaker is connected to the outer wall of the slide rail through an electric slider.

[0015] Based on the foregoing solution: The sealing frame is composed of a plurality of glass plates. The glass plates are fixedly connected to each other between the glass plate and the base and between the glass plates, and a sealing glue is coated at the fixed connection. A steel frame is fixed around the glass plate, and the end of the steel frame is fixed to the outer wall of the top of the base.

[0016] In a better solution of the foregoing solution: A sealing piece is fixed to the end face of the electric door and is attached to the glass plate.

[0017] As a further solution of the present invention: A convex plate is fixed to the end of the electric door through a plurality of connecting rods, and a rubber sheet is fixed to the opposite side of the convex plate and the electric door.

[0018] A pole-mounted circuit breaker detection system includes:

[0019] A data acquisition module, which is electrically connected to the air pressure sensor and the laser rangefinder, and is used for acquiring the pressure detection data of the air pressure sensor and the displacement detection data of the laser rangefinder;

[0020] A central processing module, which processes the data of the data acquisition module and generates a leakage result;

[0021] A control module, which is electrically connected to the air pump, the electric slider, and the electric door, and is used for controlling the operation of the air pump, the electric slider, and the electric door;

[0022] A human-computer interaction module, which is used for the user to interact with the system, and includes a display unit and a control unit.

[0023] As a preferred solution of the present invention: The processing logic of the central processing module includes the following steps:

[0024] S1: The central processing module receives the data from the barometric pressure sensor and the laser rangefinder, and calculates the functional relationship between the displacement change ΔL of the laser rangefinder and the barometric pressure change ΔP in the sealed space in combination with the liquid density stored in the box body , where ρ is the liquid density and g is the acceleration due to gravity;

[0025] S2: Extract the leakage amounts of multiple barometric pressure sensors within the pressure holding time t;

[0026] S3: Extract the leakage amounts calculated by multiple laser rangefinders within the pressure holding time t;

[0027] S4: Use the dispersion algorithm to perform the dispersion algorithm once to eliminate the abnormal data in steps S2 and S3;

[0028] S5: Retain the uneliminated data, and calculate the average leakage amounts obtained by the barometric pressure sensor under the "no-load" and "loaded" detections and and the average leakage amounts calculated by the laser rangefinder and , and the only variable under the "no-load" and "loaded" detections is whether the pole-mounted circuit breaker is placed;

[0029] S6: Then calculate the leakage rate of the vacuum chamber of the circuit breaker according to the formula , where 、 are the weight coefficients.

[0030] Meanwhile, in step S4, the method for eliminating abnormal data includes the following steps:

[0031] S41: Extract the data packet data, which are respectively , where represents the i-th data in the data packet, n represents the total number of data in the data packet, and n is the number of barometric pressure sensors or the number of laser rangefinders;

[0032] S42: Calculate the dispersion;

[0033] S421: For the i-th data , first calculate the average value of all data except ;

[0034] S422: If the absolute value of - is less than or equal to the error threshold , then determine that the data is accurate and does not need to be eliminated;

[0035] S423: If the absolute value of - is greater than the error threshold If the error of the corresponding barometric pressure sensor or displacement pressure detection component is determined to be too large and a fault occurs, the data is excluded.

[0036] As a better solution of the present invention: in the step S42, when excluding the data of the barometric pressure sensor and the laser rangefinder respectively, the error thresholds are set to be , , , where b 1 is the upper limit of the error detected by the barometric pressure sensor, and a 1 is the lower limit of the error detected by the barometric pressure sensor, b 2 is the upper limit of the error detected by the laser rangefinder, and a 2 is the lower limit of the error detected by the laser rangefinder;

[0037] In the step S6, , .

[0038] The beneficial effects of the present invention are as follows:

[0039] 1. In the present invention, first, by setting a plurality of barometric pressure sensors and a plurality of displacement pressure detection components and using a comprehensive algorithm for pressure measurement, the amount of measured data and the measurement means are increased, so that the upper and lower errors of each measured data can offset each other to a certain extent, increasing the pressure detection accuracy. In addition, before detection, an "idle" detection is first performed, so as to eliminate the influence of the device's own error on the accuracy and further increase the detection accuracy.

[0040] 2. In the present invention, by setting components such as rubber sheets, connecting rods, and convex plates, the rubber sheet is expanded outward by the positive pressure to fit the glass plate and the base. On the one hand, the contact pressure can be used to achieve secondary sealing, reducing the sealing load of the sealing sheet. At the same time, it can also adaptively adjust the secondary sealing pressure according to the magnitude of the positive pressure. On the other hand, the contact and extrusion with the glass plate and the base will also generate frictional force, so as to use the frictional force to offset a part of the air pressure acting on the electric door, thereby preventing the extrusion force of the sealing sheet from being offset.

[0041] 3. In the present invention, by excluding outliers from the barometric pressure data obtained by the barometric pressure sensor and the laser rangefinder respectively, and then using a weight-based calculation method for the final leakage rate calculation, on the one hand, it can prevent low data accuracy caused by the failure of a single or local barometric pressure sensor or laser rangefinder. On the other hand, the importance of the barometric pressure sensor and the laser rangefinder to the final result can be made through the setting of weights, further increasing the detection accuracy.

[0042] 4. In the present invention, for outlier rejection, the difference between the mean value and the numerical value is calculated, and then compared based on an error threshold. The error threshold is related to the measurement accuracies of the barometric pressure sensor and the laser rangefinder. Thus, on the one hand, reliable rejection of abnormal data can be ensured according to the deviation magnitude of the data, and on the other hand, normal data can be prevented from being wrongly rejected.

[0043] 5. In the present invention, the magnitude of the weight is set according to the error magnitude. Thus, while ensuring the comprehensive utilization of both the barometric pressure sensor and the laser rangefinder detection means to increase the accuracy, the influence degree of the barometric pressure sensor and the laser rangefinder on the result can also be determined according to their error magnitudes, thereby further reducing the final error and increasing the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of the equipment used in a pole-mounted circuit breaker detection system proposed by the present invention;

[0045] Figure 2 It is a schematic diagram of the structure of the displacement pressure detection component of the equipment used in a pole-mounted circuit breaker detection system proposed by the present invention;

[0046] Figure 3 For the present invention Figure 2 The enlarged structure schematic diagram of part A in;

[0047] Figure 4 It is a schematic diagram of the structure of the sealing frame of the equipment used in a pole-mounted circuit breaker detection system proposed by the present invention;

[0048] Figure 5 It is a schematic diagram of the structure of the rubber sheet separation of the equipment used in a pole-mounted circuit breaker detection system proposed by the present invention;

[0049] Figure 6 It is a processing logic flow chart of the central processing module of a pole-mounted circuit breaker detection system proposed by the present invention;

[0050] Figure 7 It is a data rejection logic flow chart of a pole-mounted circuit breaker detection system proposed by the present invention.

[0051] In the figure: 1, base; 2, sealing frame; 3, displacement pressure detection component; 4, air pump; 5, barometric pressure sensor; 6, slide rail; 7, electric slider; 8, support seat; 9, electric door; 10, box body; 11, communication hole; 12, communication pipe; 13, laser rangefinder; 14, fixing plate; 15, inner conical surface ring; 16, outer conical surface plug; 17, glass plate; 18, steel frame; 19, rubber sheet; 20, connecting rod; 21, convex plate; 22, sealing sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments.

[0053] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0054] Embodiment 1: Equipment used in a pole-mounted circuit breaker detection system, as Figures 1 - 5 shown, includes a base 1. A sealing frame 2 is provided at the top of the base 1. An electric door 9 is provided on the outer wall of the base 1 on the opening side of the sealing frame 2. The base 1, the sealing frame 2, and the electric door 9 form a closed space.

[0055] A gas pump 4 for supplying air pressure to the closed space and a plurality of air pressure sensors 5 for detecting the air pressure in the closed space are provided at the top of the sealing frame 2.

[0056] And a displacement pressure detection assembly 3 is provided on the back of the sealing frame 2. The displacement pressure detection assembly 3 includes a box body 10 fixed to the top of the base 1 and located in the closed space and a plurality of communicating pipes 12 fixedly connected and communicating with the box body 10. A liquid is placed in the inner cavity of the box body 10, and the inner cavity of the box body 10 communicates with the closed space through a communication hole 11.

[0057] The top of the communicating pipe 12 is open. An outer conical surface plug 16 is slidably connected to the inner wall of the communicating pipe 12. A laser rangefinder 13 for detecting the position of the outer conical surface plug 16 is provided at the top of the communicating pipe 12. The laser rangefinder 13 is fixed to the side wall of the sealing frame 2 through a fixing plate 14.

[0058] When the device is in use, first directly close the electric door 9, then blow gas into the closed space through the gas pump 4 to increase the air pressure in the closed space, then maintain the pressure, and the air pressure sensor 5 can directly detect the pressure change. At the same time, the air pressure in the closed space will be transmitted to the inside of the box body 10, so that the liquid in the box body 10 is squeezed into the communicating pipe 12, causing the outer conical surface plug 16 to move upward. The laser rangefinder 13 can detect the moving distance of the outer conical surface plug 16, so as to perform pressure calculation. Then, the pressure is detected by a plurality of air pressure sensors 5 and a plurality of displacement pressure detection assemblies 3 for comprehensive calculation to judge the final change rate of the pressure, and the leakage rate of the detection device itself can be obtained. Then open the electric door 9, place the circuit breaker in the closed space, measure again, obtain the combination of the leakage rate of the circuit breaker and the device itself, and then subtract the leakage rate of the device itself to obtain the leakage rate of the circuit breaker.

[0059] In this device, first, by setting multiple air pressure sensors 5 and multiple displacement pressure detection components 3, and using a comprehensive algorithm for pressure measurement, the amount of measurement data and measurement means are increased. As a result, the upper and lower errors of each measurement data can offset each other to a certain extent, increasing the pressure detection accuracy. Additionally, before detection, a "no-load" detection is carried out first, which can eliminate the influence of the device's own errors on the accuracy and further increase the detection accuracy.

[0060] To solve the reflux problem; as Figure 3 shown, an inner conical surface ring 15 that mates with the outer conical surface plug 16 is fixed to the bottom inner wall of the connecting pipe 12.

[0061] A slide rail 6 is fixed to the top outer wall of the base 1, and the outer wall of the slide rail 6 is connected by an electric slider 7 to a support seat 8 that supports the circuit breaker.

[0062] By setting the inner conical surface ring 15, it can limit the maximum movement position of the outer conical surface plug 16, thereby preventing the outer conical surface plug 16 from moving to the corner of the connecting pipe 12 and leaving a gap that affects subsequent use.

[0063] For the convenience of observation; as Figure 4 shown, the sealing frame 2 is composed of multiple glass plates 17. The glass plates 17 are fixedly connected to each other between the glass plate 17 and the base 1 and between the glass plates 17, and sealant is coated at their fixed connection points. A steel frame 18 is fixed around the glass plate 17, and the end of the steel frame 18 is fixed to the top outer wall of the base 1.

[0064] The entire detection process can be observed through the glass plate 17.

[0065] To solve the sealing problem; as Figure 5 shown, a sealing piece 22 that fits with the glass plate 17 is fixed to the end face of the electric door 9.

[0066] Moreover, a convex plate 21 is fixed to the end of the electric door 9 through multiple connecting rods 20, and a rubber sheet 19 is fixed to the side of the convex plate 21 opposite to the electric door 9.

[0067] When the electric door 9 is in the closed state, the sealing piece 22 contacts the end face of the glass plate 17 to achieve sealing. And the rubber sheet 19 and the convex plate 21 will extend into the closed space. When gas is filled into the closed space, the air pressure will also act on the rubber sheet 19. The rubber sheet 19 will be expanded by the air pressure to the surroundings, so that the rubber sheet 19 contacts and presses against the inner wall of the glass plate 17 and the inner wall of the base 1. And the greater the air pressure, the greater the contact and pressing force between the rubber sheet 19 and the inner walls of the glass plate 17 and the base 1.

[0068] During the test, the entire enclosed space is in a positive pressure state, which causes the electric door 9 to be subjected to a positive pressure force. This force will counteract a part of the extrusion force of the sealing piece 22, resulting in a decrease in the sealing effect and a leakage risk. However, by setting components such as the rubber sheet 19, connecting rod 20, and convex plate 21, this device makes the rubber sheet 19 expand outward and fit against the glass plate 17 and the base 1 under the action of the positive pressure. On the one hand, it can achieve secondary sealing using the contact pressure, reducing the sealing load of the sealing piece 22. At the same time, it can also adaptively adjust the secondary sealing pressure according to the magnitude of the positive pressure. On the other hand, the contact and extrusion with the glass plate 17 and the base 1 will also generate frictional force, thereby using the frictional force to counteract a part of the air pressure force received by the electric door 9, preventing the extrusion force of the sealing piece 22 from being counteracted.

[0069] When this embodiment is in use, first, directly close the electric door 9. Then, use the air pump 4 to blow gas into the enclosed space to increase the air pressure in the enclosed space. Then, maintain the pressure. The pressure change can be directly detected by the pressure sensor 5. At the same time, the air pressure in the enclosed space will be transmitted to the inside of the box body 10, causing the liquid in the box body 10 to be squeezed into the connecting pipe 12, making the outer conical plug 16 move upward. The laser rangefinder 13 can detect the moving distance of the outer conical plug 16 to perform pressure calculation. Subsequently, through multiple pressure sensors 5 and multiple displacement-type pressure detection components 3, the pressure is detected and comprehensively calculated to judge the final change rate of the pressure, and the leakage rate of the detection device itself can be obtained. Then, open the electric door 9, place the circuit breaker in the enclosed space, measure again, obtain the combination of the leakage rate of the circuit breaker and the device itself, and subtract the leakage rate of the device itself to obtain the leakage rate of the circuit breaker. In addition, when the electric door 9 is in the closed state, the sealing piece 22 contacts the end face of the glass plate 17 to achieve sealing, and the rubber sheet 19 and the convex plate 21 will extend into the enclosed space. When the enclosed space is filled with gas, the air pressure will also act on the rubber sheet 19. The rubber sheet 19 will expand in all directions under the action of the air pressure, causing the rubber sheet 19 to contact and squeeze the inner walls of the glass plate 17 and the base 1. Moreover, the greater the air pressure, the greater the contact and extrusion force between the rubber sheet 19 and the inner walls of the glass plate 17 and the base 1.

[0070] Embodiment 2: A pole-mounted circuit breaker detection system, which is used to process the data collected by the pole-mounted circuit breaker detection device in Embodiment 1 and generate a judgment result, as Figures 6 - 7 shown: It includes:

[0071] A data acquisition module, which is electrically connected to the pressure sensor 5 and the laser rangefinder 13, and is used to collect the pressure detection data of the pressure sensor 5 and the displacement detection data of the laser rangefinder 13;

[0072] A central processing module processes the data from the data acquisition module and generates a leakage result;

[0073] A control module, the control module is electrically connected to the air pump 4, the electric slide 7, and the electric door 9, and is used to control the operation of the air pump 4, the electric slide 7, and the electric door 9;

[0074] The human-computer interaction module is used for the user to interact with the system, and includes a display unit and a control unit.

[0075] The processing logic of the central processing module includes the following steps:

[0076] S1: The central processing module receives the data from the air pressure sensor 5 and the laser rangefinder 13, and calculates the functional relationship between the displacement change ΔL of the laser rangefinder 13 and the air pressure change ΔP in the enclosed space in combination with the density of the liquid stored in the box 10. , where ρ is the liquid density and g is the gravitational acceleration;

[0077] S2: extracting the leakage amount of multiple air pressure sensors 5 within the pressure holding time t;

[0078] S3: extracting a plurality of leakage amounts calculated by the laser rangefinder 13 during the pressure holding time t;

[0079] S4: Using the discrete degree algorithm, execute the discrete degree algorithm once to eliminate the abnormal data in steps S2 and S3;

[0080] S5: retain the unremoved data and calculate the average leakage value obtained by the air pressure sensor 5 under the "no-load" and "load" detections respectively. and and the mean value of the leakage calculated by the laser rangefinder 13 and , and the only variable under the "no-load" and "load" detections is whether a pole-mounted circuit breaker is placed;

[0081] S6: Then according to the formula Calculate the vacuum chamber leakage rate of the circuit breaker, where , is the weight coefficient.

[0082] In step S4, the method for removing abnormal data includes the following steps:

[0083] S41: Extract data packet data, which are ,in represents the i-th data in the data packet, n represents a total of n data in the data packet, and n is the number of air pressure sensors 5 or the number of laser rangefinders 13;

[0084] S42: Dispersion calculation;

[0085] S421: For the i-th data , first calculate the mean of all data except ;

[0086] S422: If - 's absolute value is less than or equal to the error threshold , then it is determined that the data is accurate and does not need to be excluded;

[0087] S423: If - 's absolute value is greater than the error threshold , then it is determined that the error of the corresponding barometric pressure sensor 5 or displacement pressure detection component 3 is too large and a failure occurs, and the data is excluded.

[0088] In the S42 step, when excluding the data of the barometric pressure sensor 5 and the laser rangefinder 13 respectively, the error thresholds are set to be , , , where b 1 is the upper error limit detected by the barometric pressure sensor 5, a 1 is the lower error limit detected by the barometric pressure sensor 5, b 2 is the upper error limit detected by the laser rangefinder 13, a 2 is the lower error limit detected by the laser rangefinder 13;

[0089] In the S6 step, , .

[0090] For example, the barometric pressure error detected by the barometric pressure sensor 5 is expressed as , x is the detected value, then represents the actual value range as (x + 0.05, x - 0.03), then at this time b 1 = 0.05, a 1 = -0.03, then = 0.04; the barometric pressure error detected by the laser rangefinder 13 is expressed as , is the detected value, then represents the actual value range as , then at this time b 2 = 0.05, a 2 = -0.01, then = 0.03.

[0091] In the present invention, by separately eliminating outliers from the air pressure data obtained by the air pressure sensor 5 and the laser rangefinder 13, and then using a weight-based calculation method for the final leakage rate calculation, on the one hand, it can prevent low data accuracy caused by the failure of a single or local air pressure sensor 5 or laser rangefinder 13, and on the other hand, it can also make the importance of the air pressure sensor 5 and the laser rangefinder 13 on the final result through the setting of weights, further increasing the detection accuracy.

[0092] In addition, in the present invention, for outlier elimination, the mean value is subtracted from the numerical value, and then compared based on the error threshold, and the error threshold is related to the measurement accuracy of the air pressure sensor 5 and the laser rangefinder 13. Thus, on the one hand, reliable elimination of abnormal data can be ensured according to the deviation size of the data, and on the other hand, normal data can be prevented from being erroneously eliminated.

[0093] Meanwhile, in the present invention, the size of the weight is set according to the error size. Thus, while ensuring the comprehensive utilization of the two detection means of the air pressure sensor 5 and the laser rangefinder 13 to increase the accuracy, it can also determine the influence degree of the air pressure sensor 5 and the laser rangefinder 13 on the result according to their error sizes, thereby further reducing the final error and increasing the detection accuracy.

[0094] As described above, only the preferred specific embodiments of the present invention are given, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A pole-mounted circuit breaker detection system, which is implemented by a detection device, the detection device comprising a base (1), an air pump (4), a displacement pressure detection component (3), an air pressure sensor (5), an electric door (9) and a laser rangefinder (13); a sealing frame (2) is arranged on the top of the base (1), and an air pump (4) for providing air pressure to a closed space and a plurality of air pressure sensors (5) for detecting the air pressure in the closed space are arranged on the top of the sealing frame (2); in, The displacement type pressure detection assembly (3) comprises a box body (10) fixed to the top of the base (1) and located in a closed space, and a plurality of connecting pipes (12) fixed and connected to the box body (10); The top of the connecting pipe (12) is open, the inner wall of the connecting pipe (12) is slidably connected to an outer conical plug (16), the top of the connecting pipe (12) is provided with a laser rangefinder (13) for detecting the position of the outer conical plug 16, and the laser rangefinder (13) is fixed to the side wall of the sealing frame (2) via a fixing plate 14; A slide rail (6) is fixed to the top outer wall of the base (1), and the outer wall of the slide rail (6) is connected to a support seat (8) for supporting the circuit breaker via an electric slider (7); Characterized in that the pole-mounted circuit breaker detection system comprises: A data acquisition module, the data acquisition module is electrically connected to the air pressure sensor (5) and the laser rangefinder (13), and is used to collect pressure detection data of the air pressure sensor (5) and displacement detection data of the laser rangefinder (13); A central processing module processes the data from the data acquisition module and generates a leakage result; a control module, the control module being electrically connected to the air pump (4), the electric slide block (7), and the electric door (9), and being used to control the operation of the air pump (4), the electric slide block (7), and the electric door (9); A human-computer interaction module is used for the user to interact with the system, and includes a display unit and a control unit; The processing logic of the central processing module includes the following steps: S1: The central processing module receives data from the air pressure sensor (5) and the laser rangefinder (13), and calculates the functional relationship between the displacement change ΔL of the laser rangefinder (13) and the air pressure change ΔP in the enclosed space in combination with the density of the liquid stored in the box body (10); S2: extracting the leakage amount of multiple air pressure sensors (5) within the pressure holding time t; S3: extracting a plurality of leakage amounts calculated by the laser rangefinder (13) during the pressure holding time t; S4: Using the discrete degree algorithm, execute the discrete degree algorithm once to eliminate the abnormal data in steps S2 and S3; S5: Keep the unremoved data and calculate the average leakage value obtained by the air pressure sensor (5) under "no load" and "load" detection respectively and and the mean leakage value calculated by the laser rangefinder (13) and , and the only variable under "no load" and "load" detection is whether the pole-mounted circuit breaker is placed; S6: Then calculate the vacuum chamber leakage rate of the circuit breaker; In the step S4, the dispersion algorithm uses the packet mean and the error threshold Alignment method removal, where the error threshold When the data of the air pressure sensor (5) and the laser rangefinder (13) are respectively eliminated, the settings are respectively , , , wherein b1 is the upper limit of the error detected by the air pressure sensor (5), a1 is the lower limit of the error detected by the air pressure sensor (5), b2 is the upper limit of the error detected by the laser rangefinder (13), and a2 is the lower limit of the error detected by the laser rangefinder (13); In the step S6, the calculation formula is: ,in , is the weight coefficient; ， 。 2. A pole mounted circuit breaker detection system according to claim 1, characterized in that: In step S1, the functional relationship between the displacement change ΔL of the laser rangefinder (13) and the pressure change ΔP in the enclosed space is calculated as follows: , where ρ is the liquid density and g is the gravitational acceleration.

3. A pole mounted circuit breaker detection system according to claim 1, characterized in that: In step S4, the method for removing abnormal data includes the following steps: S41: Extract data packet data, which are ,in represents the i-th data in the data packet, n represents a total of n data in the data packet, and n is the number of air pressure sensors (5) or the number of laser rangefinders (13); S42: Discreteness calculation; S421: For the i-th data , first calculate and remove The mean of all data except ; S422: If - The absolute value of is less than or equal to the error threshold , then the data is determined to be accurate and does not need to be eliminated; S423: If - The absolute value of , it is determined that the error of the corresponding air pressure sensor (5) or displacement pressure detection component (3) is too large and a fault has occurred, and the data is discarded.

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