Locomotive linear combination gap lightning arrester and detection method thereof

Abstract

The invention relates to the field of electric locomotive lightning arresters, in particular to a locomotive linear combination gap lightning arrester and a detection method thereof.The locomotive linear combination gap lightning arrester comprises a shell, and the shell comprises an upper fitting, a lower flange and an insulating shell connected between the upper fitting and the lower flange; a non-linear resistor, a linear resistor and a plurality of gap copper tables are arranged in the insulating shell, the linear resistor is connected between the gap copper tables in an abutting and series mode so as to separate the adjacent gap copper tables to form a breakdown gap, and the non-linear resistor is connected with the gap copper tables in series. The invention has the effects of ensuring the overall thermal stability, reducing the residual voltage level and improving the protection level.

Description

Technical Field

[0001] The present application relates to the field of electric locomotive arresters, and in particular to a locomotive linear combination gap arrester and a detection method thereof. Background Art

[0002] During the operation of electric locomotives, due to their large carrying capacity and the fact that they run on rails, which are usually protected by guardrails to prevent people or animals from entering, there are no higher objects around the electric locomotives. Once lightning occurs, it is very easy to strike the top of the electric locomotive. If lightning enters the system of the electric locomotive, the electric locomotive system may be damaged at the least, or it may catch fire and self-ignite at the worst. Once a running electric locomotive is damaged, it will not only cause delays in the transportation of a large amount of goods or people, but also pose a threat to people in the electric locomotive or trains on other tracks. Therefore, a lightning arrester is needed to ground and conduct the high voltage of lightning.

[0003] The continuous operating voltage and the protection voltage are two very important parameters. The continuous operating voltage is the voltage of the arrester when it works normally for a long time, and the protection voltage is the voltage when it is struck by lightning. In order to allow current to pass through the arrester when it is struck by lightning, it usually has a nonlinear resistor inside. However, when the nonlinear resistor is subjected to voltage exceeding the continuous operating voltage but not reaching the protection voltage, the resistance will decrease, especially the high-frequency voltage of high-order harmonics, which has a huge impact on the nonlinear resistor, and will cause thermal collapse over time. Summary of the invention

[0004] In order to improve the problem that a nonlinear resistor lightning arrester is prone to thermal collapse when subjected to a voltage greater than a continuous voltage for a long time, the present application provides a locomotive linear combination gap lightning arrester and a detection method thereof.

[0005] The present application provides a locomotive linear combination gap arrester, which adopts the following technical solution: A locomotive linear combination gap arrester comprises a shell, wherein the shell comprises an upper hardware, a lower flange and an insulating shell connected between the upper hardware and the lower flange, wherein a nonlinear resistor, a linear resistor and a plurality of gap copper platforms are arranged in the insulating shell, wherein the linear resistor is connected in series between the plurality of gap copper platforms to separate adjacent gap copper platforms to form a breakdown gap, and the nonlinear resistor is connected in series with the gap copper platforms.

[0006] By adopting the above technical scheme, when the voltage is higher than the continuous voltage and lower than the protection voltage, as the voltage increases, the resistance of the nonlinear resistor decreases, while the linear resistor remains unchanged, and the proportion of the line resistance sharing the voltage increases, which effectively limits the current flowing through the device. In particular, the combination of linear resistors and nonlinear resistors ensures the overall resistance under high-frequency harmonics. At the same time, the linear resistor shares the voltage and increases, ensuring the overall thermal stability, reducing the probability of thermal collapse caused by the sharp increase in power consumption of the nonlinear resistor when there are only nonlinear resistors and high-order harmonics. When the voltage is higher than the protection voltage, the breakdown gap between the gap copper platforms is broken down, and the linear resistor and the breakdown arc are connected in parallel, which effectively limits the voltage division of the linear resistor. At the same time, due to the presence of the linear resistor, the influence of the chopped wave overvoltage generated when the breakdown gap is broken down is reduced. At this time, the resistance of the nonlinear resistor is extremely small, and the overall resistance is low, which reduces the residual voltage level and improves the protection level.

[0007] Optionally, the capacitance value formed by the adjacent gap copper platform and the breakdown gap is not greater than 5 pF.

[0008] By adopting the above technical solution and setting a reasonable breakdown gap distance, the linear resistor can be effectively protected, the residual voltage can be reduced, and the protection level can be improved.

[0009] Optionally, the resistance of the linear resistor is 1.5 MΩ±0.5.

[0010] By adopting the above technical solution, by connecting linear resistors and nonlinear resistors in series and selecting a reasonable value of the linear resistor, transient overvoltages can be effectively shared and the harmonic tolerance level can be effectively improved; and the parameters of the linear resistor and the breakdown gap are reasonably coordinated to eliminate the chopping overvoltage caused by the pure gap lightning arrester solution and improve the overall protection level of the lightning arrester.

[0011] Optionally, the insulating shell includes a PPO engineering plastic tube, and the PPO engineering plastic tube circumferentially surrounds the nonlinear resistor, the linear resistor and the gap copper platform.

[0012] By adopting the above technical solution and using PPO insulating material as the insulating tube of the lightning arrester, the insulation properties and bending resistance properties of the original lightning arrester are improved and the weight of the lightning arrester is reduced.

[0013] Optionally, a copper pad is further included, and the copper pad is clamped between the nonlinear resistor and the lower flange.

[0014] By adopting the above technical solution, the dielectric constant mutation is optimized through the copper pad and the bottom field strength distribution is improved.

[0015] Optionally, a special conductive adhesive is provided between adjacent linear resistors and the gap copper platforms, and the dielectric constant of the special conductive adhesive is between the resistance value of the linear resistor and the resistance value of the gap copper platform.

[0016] By adopting the above technical solution, the conductivity of the gap copper platform and the linear resistor can be smoothly transitioned.

[0017] Optional, including: A voltage detection module, used to detect the voltage of the nonlinear resistor, obtain voltage detection data and output it; A current detection module is connected in series to the nonlinear resistor, and a fuse is connected in series between the input end of the current detection module and the nonlinear resistor. The new nonlinear resistor is connected in parallel to the current detection module. The current detection module is used to detect the current of the nonlinear resistor in the insulating shell, obtain current detection data and output it; A temperature detection module, which contacts the nonlinear resistor and is used to detect the temperature of the nonlinear resistor, obtain temperature detection data and output it; An image recognition module, used to perform image recognition on the housing, obtain image recognition data and output it; The data processing module is used to receive the voltage detection data, the current detection data, the temperature detection data and the image recognition data, perform data processing and calculation to obtain corresponding processing signals, and output them to the user.

[0018] By adopting the above technical solution, it is possible to automatically determine whether there is a fault inside the lightning arrester and whether the nonlinear resistor inside the arrester is faulty, which is convenient, fast and efficient.

[0019] The present application provides a detection method for a locomotive linear combination gap arrester, which adopts the following technical solution: A detection method for a locomotive linear combination gap arrester, comprising: The processed signal includes comprehensive fault data, acquisition timing data, the voltage detection data, the current detection data and the temperature detection data; Determine the influencing voltage data through the current detection data and a preset current detection internal resistance threshold; Determine the shunt resistance data by using the influencing voltage data and a preset temperature resistance threshold; Determine shunt current data by using the shunt resistance data, the current detection internal resistance threshold and the current detection data; Determine correction current data by using the shunt current data and the current detection data; Determine theoretical resistance data by using the temperature detection data and the temperature resistance threshold; Determine detection resistance data by using the voltage detection data and the correction current data; Determine and output nonlinear fault data through the theoretical resistance data, the detection resistance data and a preset error threshold; Acquire the voltage detection data and the temperature detection data in real time through the timing data; Determine the voltage variation by using the plurality of voltage detection data and the timing data; Determine the temperature change amount by using the plurality of temperature detection data and the timing data; Determine heating fault data by the voltage change, the temperature change, a preset heat dissipation threshold, the error threshold and the temperature resistance threshold; Comprehensive fault data is determined by the nonlinear fault data and the heating fault data and outputted.

[0020] By adopting the above technical solution, it is possible to automatically calculate whether the material characteristics of the nonlinear resistor are normal and whether the inside is damaged, which is convenient and fast and easy to repair.

[0021] Optional, including: The processing signal includes responding to the fault data and acquiring the image recognition data; Determining lightning strike time data through the image recognition data, a preset lightning strike image threshold and the timing data; Determine the current variation by using the plurality of current detection data and the timing data; Determining current response time data by using the current variation, the timing data and a preset fusing current threshold; The response fault data is determined and outputted according to the lightning strike time data, the current response time and a preset response time threshold.

[0022] By adopting the above technical solution, the response time of the nonlinear resistor is automatically calculated.

[0023] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and executed by a detection method for a locomotive linear combination gap arrester.

[0024] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Ensure the overall thermal stability, reduce the impact of the chopping wave overvoltage generated when the breakdown gap is broken down, reduce the residual voltage level, and improve the protection level.

[0026] 2. Improve the insulation and bending properties of the original arrester and reduce the weight of the arrester.

[0027] 3. Improve the bottom field strength distribution and make the conductivity of the gap copper platform and linear resistor transition smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a locomotive linear combination gap arrester in Example 1 of the present application.

[0029] Figure 2 is along Figure 1 Schematic diagram of the cross section along line AA.

[0030] Figure 3 This is a module schematic diagram of a locomotive linear combination gap arrester in Example 2 of the present application.

[0031] Figure 4 It is a flow chart of a detection method for a locomotive linear combination gap arrester in Example 2 of the present application.

[0032] Figure 5 It is a flowchart diagram of step S16 to step S24.

[0033] Figure 6 It is a flowchart diagram of step S3 to step S34.

[0034] Explanation of the reference numerals: 1. Shell; 11. Upper hardware; 12. Lower flange; 13. Insulating shell; 131. PPO engineering plastic pipe; 2. Non-linear resistor; 21. Linear resistor; 22. Gap copper platform; 221. Breakdown gap; 23. Copper pad; 24. Special conductive adhesive; 3. Voltage detection module; 31. Current detection module; 32. Temperature detection module; 33. Image recognition module; 34. Data processing module. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] Embodiment 1 of the present application discloses a locomotive linear combination gap arrester. Figure 1 and Figure 2 The locomotive linear combination gap arrester includes a shell 1, which includes an upper hardware 11, a lower flange 12 and an insulating shell 13 connected between the upper hardware 11 and the lower flange 12. The lower flange 12 and the fasteners thereon can be made of stainless steel to ensure that the part exposed to the air has rust resistance. The upper hardware 11 and the lower flange 12 are used for electrical connection to an external circuit, for example, they can be electrically connected to a main circuit breaker and a main transformer respectively.

[0037] Reference Figure 1 and Figure 2 A nonlinear resistor 2, a linear resistor 21, two gap copper platforms 22 and a copper pad 23 are installed in the insulating shell 13. The first gap copper platform 22 is electrically connected to the upper hardware 11 by spring compression. The linear resistor 21 can be a ring made of a ceramic linear resistor containing zinc oxide, for example. The linear resistor 21 is electrically connected to the side wall of the first gap copper platform 22 facing away from the upper hardware 11. The second gap copper platform 22 is electrically connected to the side wall of the linear resistor 21 away from the first gap copper platform 22. The two ends of the linear resistor 21 separate the two gap copper platforms 22, so that a breakdown gap 221 is formed between the inner circle side wall of the linear resistor 21 and the two gap copper platforms 22.

[0038] Reference Figure 1 and Figure 2 The capacitance value formed by the mutually facing side walls of the adjacent gap copper platforms 22, the material properties of the gap copper platforms 22, and the distance of the breakdown gap 221 is no more than 5pF, and the resistance value of the linear resistor 21 is 1.5MΩ±0.5. A special conductive adhesive 24 is bonded between the linear resistor 21 and the gap copper platform 22, and the dielectric constant of the special conductive adhesive 24 is between the resistance value of the linear resistor 21 and the resistance value of the material properties of the gap copper platform 22 itself.

[0039] Reference Figure 1 and Figure 2 The nonlinear resistor 2 can be a zinc oxide resistor sheet, and there are multiple nonlinear resistors 2. The first nonlinear resistor 2 is electrically connected to the end of the second gap copper platform 22 away from the linear resistor 21. The second nonlinear resistor 2 is electrically connected to the first nonlinear resistor 2. The other nonlinear resistors 2 are similar, and each is electrically connected to the previous nonlinear resistor 2.

[0040] Reference Figure 1 and Figure 2 , the copper pad 23 is electrically connected to the last nonlinear resistor 2, and the lower flange 12 is in contact with the copper pad 23, so that the copper pad 23 is tightly pressed against the nonlinear resistor 2. That is, in the insulating shell 13, from the upper hardware 11 to the lower flange 12, the gap copper platform 22, the linear resistor 21, the nonlinear resistor 2 and the copper pad 23 are installed in sequence, and the adjacent components are electrically connected to each other.

[0041] Reference Figure 1 and Figure 2The insulating shell 13 includes a PPO engineering plastic tube 131 and a silicone rubber jacket 132. The PPO engineering plastic tube 131 is a tubular tube made of PPO insulating material. The PPO engineering plastic tube 131 circumferentially surrounds the nonlinear resistor 2, the linear resistor 21, the gap copper platform 22 and the copper pad 23. One end of the PPO engineering plastic tube 131 abuts against the inner wall of the upper hardware 11, and the other end of the PPO engineering plastic tube 131 abuts against the inner wall of the lower flange 12. The silicone rubber jacket 132 is made of silicon material. The silicone rubber jacket 132 is sleeved on the outer periphery of the PPO engineering plastic tube 131, and one end of the silicone rubber jacket 132 is sleeved and abutted against the outer wall of the upper hardware 11, and the other end of the silicone rubber jacket 132 is sleeved and abutted against the outer wall of the lower flange 12. The upper hardware 11 and the lower flange 12 are clamped and insulated by the silicone rubber jacket 132 and the PPO engineering plastic tube 131.

[0042] The implementation principle of a locomotive linear combination gap arrester in the embodiment of the present application is as follows: when the voltage is lower than the continuous operation voltage, the linear resistor 21 and the nonlinear resistor 2 are combined into a large resistor to limit the current flowing through the device; When the voltage is higher than the continuous voltage but lower than the protection voltage, as the voltage increases, the resistance of the nonlinear resistor 2 decreases, and the resistance of the linear resistor 21 remains unchanged, so that the voltage proportion shared by the linear resistor 21 increases, which can effectively limit the current flowing through the device; When the voltage is higher than the protection voltage of the equipment, the breakdown gap 221 is broken down, and the linear resistor 21 and the breakdown arc are connected in parallel, which effectively limits the voltage division on the linear resistor 21. At this time, due to the high voltage, the resistance of the nonlinear resistor 2 is extremely small, and the whole is in a low resistance state.

[0043] Embodiment 2: Different from Example 1, Figure 2 and Figure 3 The locomotive linear combination gap arrester includes a voltage detection module 3, a current detection module 31, a temperature detection module 32, an image recognition module 33, and a data processing module 34. The voltage detection module 3 can be, for example, a voltmeter or other instruments and equipment with a voltage detection function. Both ends of the voltage detection module 3 can be embedded in a PPO engineering plastic pipe 131 and passed through the nonlinear resistor 2. Both ends of the voltage detection module 3 are respectively connected in parallel to the first nonlinear resistor 2 and the second nonlinear resistor 2 to detect the voltage of all the nonlinear resistors 2 connected in series, obtain voltage detection data and output it.

[0044] Reference Figure 3The current detection module 31 can be, for example, an ammeter or other instruments and equipment with current detection function. A fuse 311 is connected in series between the lower flange 12 and the current detection module 31. The fuse 311 can be a fuse, a fusible wire, or other instruments and equipment with overcurrent protection. The current detection module 31 detects the current on the nonlinear resistor 2, obtains current detection data, and outputs it. The nonlinear resistor 2 is also connected in parallel to both ends of the current detection module 31. When the voltage does not reach high voltage, the resistance of the nonlinear resistor 2 is much greater than that of the current detection module 31. At this time, the current detection module 31 works normally. Since the internal resistance of the current detection module 31 is small, the nonlinear resistor 2 cannot be divided into more voltage, so that the voltage change is difficult to act on the nonlinear resistor 2, so that the resistance of the nonlinear resistor 2 will not decrease and cause current shunting. Until the fuse 311 is blown, the nonlinear resistor 2 will participate in the work.

[0045] Reference Figure 2 and Figure 3 The temperature detection module 32 may use a temperature sensor, and the detection end of the temperature detection module 32 is embedded in the PPO engineering plastic pipe 131, so as to contact the nonlinear resistor 2 through the thermal insulation of the detection end of the temperature detection module 32 to detect the temperature of the nonlinear resistor 2, obtain temperature detection data and output it. The image recognition module 33 may use a camera, which is installed on the electric locomotive, with the recognition end facing the upper hardware 11, and performs image recognition on whether the upper hardware 11 is struck by lightning, obtains image recognition data and outputs it.

[0046] Reference Figure 3 The data processing module 34 includes a database and a processor. The database is used to store various threshold data, such as current detection internal resistance threshold, temperature resistance threshold and other threshold data. The processor is used to receive voltage detection data, current detection data, temperature detection data and image recognition data, and call the corresponding threshold data from the database, process and calculate the data to obtain a processing signal, and output it to the user.

[0047] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0048] Embodiment 2 of the present application discloses a detection method for a locomotive linear combination gap arrester. Figure 4 and Figure 5 , the detection method of the locomotive linear combination gap arrester includes the following steps: S1. Processing signals including comprehensive fault data, obtaining timing data, voltage detection data, current detection data and temperature detection data; S11, determining the influencing voltage data through the current detection data and the preset current detection internal resistance threshold; S12, determining shunt resistance data by influencing voltage data and a preset temperature resistance threshold; S13, determining shunt current data through shunt resistance data, current detection internal resistance threshold and current detection data; S14, determining correction current data through shunt current data and current detection data; S15, determining theoretical resistance data through temperature detection data and temperature resistance threshold; S16, determining detection resistance data through voltage detection data and correction current data; S17, determining nonlinear fault data through theoretical resistance data, detection resistance data and a preset error threshold and outputting the data; S2, obtaining voltage detection data and temperature detection data in real time through timing data; S21, determining a voltage change amount through a plurality of voltage detection data and timing data; S22, determining a temperature change amount through a plurality of temperature detection data and timing data; S23, determining heating fault data through voltage change, temperature change, preset heat dissipation threshold, error threshold and temperature resistance threshold; S24. Determine comprehensive fault data through nonlinear fault data and heating fault data and output it.

[0049] In detail: the current detection internal resistance threshold is the internal resistance of the current detection module 31 itself and the fuse 311, and the current detection data represents the current passing through the current detection module 31. The current multiplied by the internal resistance represents the voltage loaded on the current detection module 31 and the fuse 311, which affects the voltage data. Since the nonlinear resistor 2 playing a protective role is connected in parallel, the voltage data affected is the voltage of the nonlinear resistor 2. The temperature resistance threshold is the temperature generated by the voltage of the nonlinear resistor 2, which causes the corresponding relationship of the material properties of the resistance change. Therefore, the resistance of the nonlinear resistor 2 at this time can be obtained, which is the shunt resistance data. The ratio of this resistance value to the current detection internal resistance threshold is multiplied by the current detection data to obtain the current shunted away from the nonlinear resistor 2, which is the shunt current data. The sum of the current detection data and the shunt current data is the total current, which is the correction current data. The error threshold is the allowable difference interval. Through the temperature detection data and the temperature resistance threshold, the internal resistance of the nonlinear resistor 2 at this time can be directly obtained, which is the theoretical resistance data. Then, the voltage detection data is placed in the correction current data to obtain the resistance value detected, which is the detection resistance data. Then, it is compared with the previous theoretical resistance data. If the difference exceeds the allowable interval of the error threshold, it means that the nonlinear resistor 2 has a fault, such as the resistance value response speed slows down after being affected by voltage and temperature, or the temperature is not increased in time to reduce the resistance value after being affected by voltage, etc., and nonlinear fault data indicating the fault of the nonlinear resistor 2 is output; After the fuse 311 has been blown once, and the user has not installed a new fuse 311 in time, the current detection module 31 is disconnected and cannot be started, so the current detection data cannot be obtained. At this time, the calculation can be performed only through voltage and temperature. First, the passage of time is judged by timing data, and then the changes in voltage and temperature are calculated, that is, the voltage change and the temperature change. The heat dissipation threshold is the heat dissipation performance of the nonlinear resistor 2 itself. The temperature change plus the heat dissipation threshold is the total heat generated by the nonlinear resistor 2. The voltage change and the temperature resistance threshold can obtain the corresponding theoretical heat, and the difference between the voltage change and the total heat is compared with the error threshold. If it exceeds the error threshold, it means that the nonlinear resistor 2 is faulty, and the corresponding heating fault data is output; If the fuse 311 is connected and there is current detection data, the nonlinear fault data can be compared with the heating fault data, and the comprehensive fault data can be output to make a more comprehensive judgment and prevent a certain calculation situation from failing.

[0050] Reference Figure 6 , further comprising the following steps: S3, processing signals including responding to fault data and obtaining image recognition data; S31, determining lightning strike time data through image recognition data, a preset lightning strike image threshold and timing data; S32, determining a current change amount through a plurality of current detection data and timing data; S33, determining current response time data according to the current variation, timing data and a preset fuse current threshold; S34, determining and outputting response fault data based on the lightning strike time data, the current response time and a preset response time threshold.

[0051] Details: The lightning strike image threshold is the image of the lightning strike. By comparing the image recognition data with the lightning strike image threshold, it is determined whether the current is struck by lightning. If it is determined to be yes, the current timing data is recorded. This time is used as the lightning strike time data. After being struck by lightning, theoretically, the resistance of the nonlinear resistor will drop sharply and the breakdown gap 221 will be broken down, and a large current will be quickly conducted to the ground terminal. At this time, the fuse 311 will open due to overcurrent, and the current detection data will quickly return to zero. Therefore, the current change is calculated, which is the difference between the current detection data divided by the time recorded by the timing data. Assume that the fuse current threshold is half continuous. The operating voltage means that when the current drops by half of the continuous operating voltage in a short period of time, it means that the fuse is blown at this time. The timing data when the current detection data returns to zero is recorded, which is the current response time data. The response time threshold is the time from being struck by lightning to the time when the resistance value drops rapidly and is connected to the ground. Then the difference between the current response time data and the lightning strike time data is calculated. If the difference is within the range of the response time threshold, it means that the equipment is operating normally. If the difference exceeds the range of the response time threshold, it means that the nonlinear resistor 2 is faulty, or the breakdown gap 221 is not broken down, and the corresponding response fault data is output.

[0052] Embodiment 2 of the present application discloses a computer-readable storage medium. The computer-readable storage medium stores a computer program that can be loaded by a processor and execute a method for detecting a locomotive linear combination gap arrester.

[0053] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A locomotive linear combination gap arrester, comprising a housing (1), the housing (1) comprising an upper fitting (11), a lower flange (12), and an insulating shell (13) connected between the upper fitting (11) and the lower flange (12), characterized in that: A nonlinear resistor (2), a linear resistor (21) and a plurality of gap copper platforms (22) are arranged in the insulating shell (13); the linear resistor (21) is connected in series between the plurality of gap copper platforms (22) to separate adjacent gap copper platforms (22) to form a breakdown gap (221); and the nonlinear resistor (2) is connected in series with the gap copper platforms (22).

2. A locomotive linear combination gap arrester according to claim 1, characterized in that: The capacitance value formed by the adjacent gap copper platforms (22) and the breakdown gap (221) is no greater than 5 pF.

3. A locomotive linear combination gap arrester according to claim 2, characterized in that: The resistance value of the linear resistor (21) is 1.5 MΩ±0.

5.

4. A locomotive linear combination gap arrester according to claim 1, characterized in that: The insulating shell (13) comprises a PPO engineering plastic tube (131), and the PPO engineering plastic tube (131) circumferentially surrounds the nonlinear resistor (2), the linear resistor (21) and the gap copper platform (22).

5. The locomotive linear combination gap arrester according to claim 1, characterized in that: It also comprises a copper pad (23), wherein the copper pad (23) is clamped between the nonlinear resistor (2) and the lower flange (12).

6. A locomotive linear combination gap arrester according to claim 1, characterized in that: A special conductive adhesive (24) is provided between the adjacent linear resistors (21) and the gap copper platforms (22); the dielectric constant of the special conductive adhesive (24) is between the resistance value of the linear resistors (21) and the resistance value of the gap copper platforms (22).

7. The locomotive linear combination gap arrester according to claim 1, characterized in that: include: A voltage detection module (3) is used to detect the voltage of the nonlinear resistor (2), obtain voltage detection data and output it; A current detection module (31) is connected in series to the nonlinear resistor (2), and a fuse (311) is connected in series between the input end of the current detection module (31) and the nonlinear resistor (2). A new nonlinear resistor (2) is connected in parallel to the current detection module (31). The current detection module (31) is used to detect the current of the nonlinear resistor (2) in the insulating shell (13), obtain current detection data, and output it; A temperature detection module (32) is in contact with the nonlinear resistor (2) and is used to detect the temperature of the nonlinear resistor (2), obtain temperature detection data and output it; An image recognition module (33) is used to perform image recognition on the housing (1), obtain image recognition data and output it; The data processing module (34) is used to receive the voltage detection data, the current detection data, the temperature detection data and the image recognition data, perform data processing and calculation to obtain a corresponding processing signal, and output it to a user.

8. A method for detecting a locomotive linear combination gap arrester, using the locomotive linear combination gap arrester according to claim 7, characterized in that: include: The processed signal includes comprehensive fault data, acquisition timing data, the voltage detection data, the current detection data and the temperature detection data; Determine the influencing voltage data through the current detection data and a preset current detection internal resistance threshold; Determine the shunt resistance data by using the influencing voltage data and a preset temperature resistance threshold; Determine shunt current data by using the shunt resistance data, the current detection internal resistance threshold and the current detection data; Determine correction current data by using the shunt current data and the current detection data; Determine theoretical resistance data by using the temperature detection data and the temperature resistance threshold; Determine detection resistance data by using the voltage detection data and the correction current data; Determine and output nonlinear fault data through the theoretical resistance data, the detection resistance data and a preset error threshold; Acquire the voltage detection data and the temperature detection data in real time through the timing data; Determine the voltage variation by using the plurality of voltage detection data and the timing data; Determine the temperature change amount by using the plurality of temperature detection data and the timing data; Determine heating fault data by the voltage change, the temperature change, a preset heat dissipation threshold, the error threshold and the temperature resistance threshold; Comprehensive fault data is determined by the nonlinear fault data and the heating fault data and outputted.

9. A detection method for a locomotive linear combination gap arrester according to claim 8, characterized in that: include: The processing signal includes responding to the fault data and acquiring the image recognition data; Determining lightning strike time data through the image recognition data, a preset lightning strike image threshold and the timing data; Determine the current variation by using the plurality of current detection data and the timing data; Determining current response time data by using the current variation, the timing data and a preset fusing current threshold; The response fault data is determined and outputted according to the lightning strike time data, the current response time and a preset response time threshold.

10. A computer-readable storage medium, characterized in that: The computer program is stored which can be loaded by a processor and execute the detection method of the locomotive linear combination gap arrester according to any one of claims 8 to 9.

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