Intelligent detection device for zinc oxide lightning arrester

Abstract

An intelligent detection device for zinc oxide lightning arrester includes: connecting electrode, resistor, sheet electrode, detection module, current lead, tubular electrode, metal stewing cover, ring nut, guide cover, nut, preset bolt, shell, solar panel, antenna, disconnector, a current lead is welded on the connecting electrode, bypasses the resistor and sheet electrode, passes through the mutual inductance coil on the detection module and is connected to the tubular electrode, so that the current lead and the resistor form a parallel connection method, the connecting electrode is reserved with screw holes suitable for zinc oxide lightning arresters of various purposes, and can monitor the leakage current, number of lightning strikes, temperature of zinc oxide lightning arresters online, and monitor the status of disconnectors. When overvoltage occurs, the fault point and positioning function are found, and the current entering the ground due to the closed circuit of the lightning arrester is isolated, so as to achieve real-time online monitoring of the operation status of zinc oxide lightning arresters and disconnectors, reduce the number of power outages and enable rapid repairs.

Description

Technical field:

[0001] The present invention relates to an intelligent detection device for zinc oxide lightning arresters, and more particularly to an intelligent detection device capable of online detection of leakage current, number of lightning strikes, temperature and residual power of zinc oxide lightning arresters, so as to achieve real-time online detection of the operating state of zinc oxide lightning arresters. At the same time, the quality of the disconnector can be detected. When the lightning arrester is subjected to overvoltage or the lightning arrester is aged, the fault point can be found in time to quickly replace the damaged parts, thereby minimizing the power-off loss. Background technology:

[0002] The existing arrester insulation detection products are mainly the following: the first type has a mechanical pointer to display the leakage current of the zinc oxide arrester, and requires manual regular inspections and data copying. The volume is large, and the detection product is connected in series to the grounding wire, which poses a great safety hazard when lightning strikes, and it is easy to damage the arrester detection product, and the data cannot be uploaded remotely. The second type uses the fundamental wave method to measure the leakage current and resistive current of the zinc oxide arrester to determine the insulation of the arrester. It uses external power supply, increases the volume, and reduces the degree of intelligence.

[0003] The third is the patent with authorization number CN204189543. This invention packages the intelligent detection circuit and the zinc oxide lightning arrester into one. Analysis shows that this invention has the following main disadvantages: First, once the zinc oxide lightning arrester is damaged by overvoltage or the lightning arrester is aged, the entire lightning arrester will be scrapped. In addition, damage to the electronic detection circuit will also cause the entire lightning arrester to be scrapped, which will cause huge waste; second, the zinc oxide lightning arrester will be operated under high voltage for a long time, and the valve plate will heat up. The intelligent detection circuit and the valve plate are packaged as one, which will cause the electronic components on the circuit to be easily damaged by heat; third, this invention uses the leakage current of the lightning arrester to draw electricity for charging. The national standard stipulates that the lightning arrester is judged to be damaged if the leakage current is greater than 30UA. Generally, the lithium battery charging protection circuit is set to less than 5mA and cannot be charged. Even if the battery charging protection circuit does not use electricity In the direct charging mode, the lithium battery itself has self-protection measures. If the current is less than 0.01C of the rated capacity of the battery, it cannot be charged. Therefore, this design cannot meet the existing battery charging standards. In particular, with the development of lightning protection technology, the State Grid recommends the use of more and more gap arresters. Because there is an air gap with the line, there is no leakage current at ordinary times, and the charging method of this invention cannot be used at all; the fourth point is that the sampling circuit of the invention adopts the series resistance voltage division method, which requires the sampling resistor and the zinc oxide resistor to be connected to the ground in series, and the electronic circuit is easy to introduce a large current of lightning strike and thus be damaged; the fifth point is that the invention uses a wireless channel to transmit data. Affected by the radio management regulations, an ultra-high-power radio transceiver cannot be set up, so data cannot be directly transmitted to the background server over a long distance. The wireless transmission distance is short, and a relay is required to transmit the data farther. The sixth point is that the invention does not have GPS or Beidou positioning function, and real-time geographic positioning cannot be achieved when a fault occurs, which is not convenient for operation and maintenance personnel to quickly navigate the geographical location of the fault point; the seventh point is that the invention does not have a disconnector, and cannot isolate the current entering the ground due to the closed circuit of the lightning arrester, and does not have a disconnector status detection function. There are great differences in the quality of existing arrester disconnectors. Some arresters are not damaged, but the disconnectors have fallen off, causing great trouble to the inspection and maintenance personnel. Some arresters are damaged but the disconnectors do not fall off, which cannot protect the line. There are great safety hazards that cannot be discovered. When the disconnector is working normally, if an overvoltage is encountered, the arrester must be inspected one by one to find the fault point. This invention does not have the function of detecting the fault of the arrester disconnector. Eighth point, because the intelligent detection circuit is packaged as one with the zinc oxide arrester, this invention is not suitable for arresters of various purposes. Summary of the invention:

[0004] 1. Technical issues to be resolved

[0005] The purpose of the present invention is to overcome the above shortcomings, and to provide an intelligent detection device for zinc oxide lightning arresters, which can detect the insulation of lightning arresters and count the number of lightning strikes on the arrester in real time online. Display the temperature of the zinc oxide valve plate and the remaining power of the battery, comprehensively analyze the insulation state of the lightning arrester through the leakage current and the temperature of the valve plate, timely detect the damage of the lightning arrester, and detect the quality of the disconnector at the same time, locate the fault point in real time to reduce the workload of manual line inspection. Accurate geographic positioning is achieved to repair and replace faulty components in time. Adopting narrowband Internet of Things technology, low power consumption, real-time data transmission and immediate upload, and direct transmission of measurement data to the background server, which is safe and reliable. Use solar energy and prefabricated charging holes to power the battery to solve the problem of power loss of zinc oxide intelligent detection device. At the same time, the intelligent detection device of zinc oxide lightning arrester can be adapted to lightning arresters for different purposes.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the intelligent detection device of zinc oxide lightning arrester of the present invention includes: connecting electrode 1, resistor sheet 2, sheet electrode 3, detection module 4, current lead 5, tubular electrode 6, metal stewing cover 7, ring nut 8, guide cover 9, nut 10, preset bolt 11, shell 12, solar panel 13, antenna 14, and disconnector 15. The detection module 4 is placed in the tubular electrode 6, one end of the tubular electrode 6 is padded with a sheet electrode 3, a resistor 2 is placed on the sheet electrode 3, a connecting electrode 1 is placed on the resistor 2, a current lead 5 is welded on the connecting electrode 1, bypassing the resistor 2 and the sheet electrode 3 through the mutual inductance coil 4.1 on the detection module 4 and connected to the tubular electrode 6, and then the shell 12 is put on. The other end of the tubular electrode 6 is covered with a metal cover 7, and the ring nut 8 is put into the preset bolt 11 on the metal cover 7 and can be tightened. The guide cover 9 and the nut 10 are put into the preset bolt 11 and tightened. The solar panel 13 and the antenna 14 are installed on the periphery of the shell 12. The preset bolt (11) is matched with the disconnector (15) to form the intelligent detection device of the invention. The connecting electrode 1 on the zinc oxide lightning arrester intelligent detection device is pre-set with a screw hole 1.1, which is suitable for zinc oxide lightning arresters for various purposes. Figure 5 , Figure 6 , Figure 7 , Figure 8 The disconnector 15 connected to the pre-set bolts 11 on the intelligent detection device for zinc oxide lightning arrester may not be used when used for zinc oxide lightning arrester with gap.

[0008] Circuit diagram of the detection module of the present invention Figure 4 : It adopts solar charging, battery power supply, external charging socket 7.1, power detection circuit, Beidou positioning transceiver module, charging and discharging voltage stabilizing circuit, protection circuit, temperature sensor, temperature acquisition circuit, signal acquisition, mutual inductance coil, lightning strike counting and leakage current processing circuit, disconnector detection circuit, microprocessor, and Internet of Things module.

[0009] The built-in current mutual inductance coil 4.1 of the detection module 4 of the present invention and the current lead 5 passing through it and the resistor 2 and the tubular electrode 6 form a parallel wiring method, and the current mutual inductance coil 4.1 is used to sense the current on the current lead 5 for detection. This principle and method simultaneously measures the leakage current of the zinc oxide lightning arrester and the number of times the zinc oxide lightning arrester is struck by lightning.

[0010] The detection module 4 of the present invention adopts narrowband Internet of Things communication technology. Over-limit data such as overvoltage, lightning arrester aging, and resistor overtemperature are sent in real time and uploaded to the server immediately, and real-time SMS alarm data is sent to the set operation and maintenance personnel's mobile phone. Conventional detection data is transmitted at a set time according to user requirements, which is convenient for management personnel to monitor the operating status of the lightning arrester in real time.

[0011] The charging wires led out from the circuit board of the detection module 4 of the present invention pass through holes 7.3 and 7.4 on the metal stewing cover 7 and are connected to the solar panel 13 outside the shell 12. An external charging socket is welded on the circuit board of the detection module 4, and the socket passes through the stewing cover hole 7.1 on the metal stewing cover 7. The wires led out from the circuit board of the detection module 4 pass through the stewing cover hole 7.2 on the metal stewing cover 7 and are connected to the antenna 14 outside the shell 12.

[0012] The preset bolt 11 on the intelligent detection device of the present invention is matched with the disconnector 15. When used for a gapless zinc oxide lightning arrester, it can isolate the ground current when the arrester is closed. By detecting the size of the leakage current, the disconnector is judged to be disconnected and good or bad. When the leakage current is close to 0, a signal is sent to the background in real time for alarm. The disconnector and the lightning arrester are connected to the ground wire in series. The disconnector is detected by detecting the current flowing through. The leakage current detected in the normal operation state of the lightning arrester is 5uA~30uA. When the arrester is working normally and falls off due to a disconnector failure, the overvoltage lightning arrester will not play a role in protecting the line. When the arrester is installed with an intelligent detection module, the leakage current detected by the disconnector falling off will become close to 0, because the disconnector and the lightning arrester are connected to the ground wire in series, and the disconnector is disconnected and cannot form a closed loop current lead without current flowing.

[0013] The intelligent detection device of the present invention can also be used in conjunction with lightning arresters for various purposes, including lightning protection insulators with lightning arresters. Figure 5 , Lightning protection tension insulator with lightning arrester Figure 6 , Gapless arrester with disconnector Figure 7 , Chamber Intelligent Arrester Figure 8 .

[0014] The composite sheathed zinc oxide arrester 20 and the connecting electrode 1 on the intelligent detection device are screwed together as a whole through a conical tightening sealing structure, and the softness of the silicone rubber at the bottom of the arrester is used to make the connection more compact and firm, waterproof and prevent the formation of air gaps to cause discharge.

[0015] The intelligent detection device for zinc oxide lightning arrester is adapted to the lightning insulator 16 with lightning arrester. The bolts on the lightning arrester 16 are screwed into the screw holes 1.1 reserved for the connecting electrode 1 and tightened. Then the preset bolts 11 on the metal cover 7 of the intelligent detection device are passed through the holes on the lightning arrester bracket, and the gaskets 11.3 and spring washers 11.2 are placed. The nuts 11.1 are screwed on to form the intelligent lightning insulator with lightning arrester. Figure 5 .

[0016] The intelligent detection device for zinc oxide lightning arrester is adapted to the lightning arrester lightning protection tension insulator 17. The bolts on the lightning arrester 17 are screwed into the screw holes 1.1 reserved for the connecting electrode 1 and tightened. Then the preset bolts 11 on the metal cover 7 of the intelligent detection device are passed through the holes on the lightning arrester bracket 17.1. The gaskets 11.3 and spring washers 11.2 are padded and the nuts 11.1 are screwed on to form the intelligent lightning arrester lightning protection tension insulator. Figure 6 .

[0017] The intelligent detection device for zinc oxide lightning arrester is adapted to the gapless lightning arrester 18 with a disconnector. The bolts on the lightning arrester 18 pass through the holes on the insulating bracket 18.1 of the lightning arrester and are screwed into the screw holes 1.1 reserved for the connecting electrode 1 and tightened. Then, the preset bolts 11 on the metal cover 7 of the intelligent detection device are tightened with the screw holes on the disconnector 15 to form an intelligent gapless lightning arrester with a disconnector. Figure 7 .

[0018] Zinc oxide arrester intelligent detection device is suitable for chamber arrester Figure 8 The zinc oxide arrester 20 has an upper contact 20.2, a contact ring 20.1, and a lead fixing pile 20.3. The bolt on the zinc oxide arrester 20 is screwed into the screw hole 1.1 reserved for the connection electrode 1 and tightened. Then, the preset bolt 11 on the metal cover 7 on the intelligent detection device is tightened with the screw hole on the disconnector 15. The lead 15.1 on the disconnector 15 is fixed on the lead fixing pile 20.3 to form the chamber intelligent arrester body. Figure 8 There is a protrusion 12.1 on the housing 12 of the zinc oxide lightning arrester intelligent detection device. Using a special insulating operating rod, the intelligent lightning arrester 20 can be quickly plugged in and out of the insulating cavity 19, thereby realizing rapid live replacement of the lightning arrester.

[0019] The elastic conductive card fixing ring 19.3 on the insulating cavity 19 has an elastic conductive card 19.1 screwed 19.4 inside. The elastic conductive card 19.1 is constantly tightened by the annular tension spring 19.2 around it, and the stepped metal contact ring 20.1 can be clamped more firmly and closely. Use a special insulating operating rod to insert the intelligent lightning arrester 20. When the upper contact 20.2 and the contact ring 20.1 reach the step 20.4 of the stepped metal contact ring, there will be a sound of the elastic conductive card closing to remind you to prevent false contact ( Figure 8), the elastic conductive card blocks the stepped metal contact ring to prevent the arrester from falling due to its own weight and vibration. Description of the drawings:

[0020] Figure 1 It is an assembly diagram of the intelligent detection device for zinc oxide lightning arrester of the present invention.

[0021] Figure 2 It is a structural diagram of the connection electrodes on the intelligent detection module device of the present invention.

[0022] Figure 3 It is a structural diagram of the stewing cover on the intelligent detection device of the present invention.

[0023] Figure 4 It is a circuit principle block diagram of the intelligent detection device of the present invention.

[0024] Figure 5 It is a combined structural diagram of an intelligent detection device and a lightning protection insulator with a lightning arrester.

[0025] Figure 6 It is a combined structural diagram of an intelligent detection device and a lightning protection tension insulator with a lightning arrester.

[0026] Figure 7 It is a combined structural diagram of an intelligent detection device and a gapless lightning arrester with a disconnector.

[0027] Figure 8 It is a combined structural diagram of an intelligent detection device and a chamber arrester.

[0028] Fig. 9 It is a structural diagram of the combination of elastic conductive cards and fixed rings on a chamber intelligent lightning arrester.

[0029] Fig.10 This is a structural diagram of the stepped metal contact ring on the chamber intelligent lightning arrester. Specific implementation method:

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and working principles, but this does not limit the protection scope of the present invention.

[0031] The zinc oxide intelligent detection device of the present invention is independent and integrated, and is connected to the ground wire in series with the lightning arrester disconnector. When the lightning arrester or the disconnector is damaged, only the damaged parts need to be replaced. Because it is installed separately, even if the zinc oxide valve plate heats up, it will not affect the intelligent detection device. The battery is independently powered, and charging with solar panels is safe and reliable. The parallel wiring method is safe and reliable to prevent the intelligent detection device from being damaged. The narrowband Internet of Things communication uploads data in real time and quickly, and the Beidou positioning is accurate and convenient for finding the geographical location. When used in conjunction with a gapless lightning arrester, it can isolate the current entering the ground due to the closed circuit of the lightning arrester, can detect the quality of the disconnector and reduce the workload of operation and maintenance, and can be used in conjunction with lightning arresters for various purposes.

[0032] The intelligent detection device for zinc oxide lightning arrester of the present invention comprises: connecting electrode 1, resistor sheet 2, sheet electrode 3, detection module 4, current lead 5, tubular electrode 6, metal stewing cover 7, ring nut 8, guide cover 9, nut 10, preset bolt 11, shell 12, solar panel 13, antenna 14 and disconnector 15. The detection module 4 is placed in the tubular electrode 6, one end of the tubular electrode 6 is padded with a sheet electrode 3, a resistor 2 is placed on the sheet electrode 3, a connecting electrode 1 is placed on the resistor 2, a current lead 5 is welded on the connecting electrode 1, bypassing the resistor 2 and the sheet electrode 3, passing through the mutual inductance coil 4.1 on the detection module 4 and connected to the tubular electrode 6, and then the shell 12 is put on. The other end of the tubular electrode 6 is covered with a metal cover 7, and the ring nut 8 is put into the preset bolt 11 on the metal cover 7 and can be tightened. The guide cover 9 and the nut 10 are put into the preset bolt 11 and tightened. The solar panel 13 and the antenna 14 are installed on the periphery of the shell 12, and the preset bolt 11 is matched with the disconnector 15 to form the intelligent detection device of the invention. The connecting electrode 1 on the zinc oxide lightning arrester intelligent detection device is pre-set with a screw hole 1.1, which is suitable for zinc oxide lightning arresters for various purposes. Figure 5 , Figure 6 , Figure 7 , Figure 8 .

[0033] Circuit diagram of the detection device of the present invention Figure 4 :It adopts solar charging, battery power supply, external charging socket 7.1, power detection circuit, Beidou positioning transceiver module, charging and discharging voltage stabilization circuit, protection circuit, temperature sensor, temperature acquisition circuit, signal acquisition, mutual inductance coil, lightning strike counting and leakage current processing circuit, disconnector detection circuit, microprocessor, Internet of Things module. Analyze power consumption, battery life, solar charging status, and whether data loss is due to insufficient battery power. Use a 3.7V battery and step it down to a reference voltage of 2.5V through a step-down chip. The reference voltage of 2.5V is loaded on the ADC1_IN1 pin of the main control chip for AD acquisition. Because the battery voltage value is changing, the battery voltage is xV, the main control chip is 12-bit AD acquisition, the resolution is 1 / 2^12 (1 / 4096), the AD collects a reference voltage of 2.5V corresponding to a bit rate value: 2.5V~Y (Y is known, a value between 0 and 4096), the battery voltage xV corresponds to the bit rate value: xV~4096, the x value is deduced, the battery is fully charged to 4.02V, x / 4.02*100% is the remaining battery power.

[0034] The built-in current mutual induction coil 4.1 of the detection module 4 of the present invention and the current lead 5 passing through it and the resistor 2 and the tubular electrode 6 form a parallel wiring method. The current mutual induction coil 4.1 is used to sense the current on the current lead 5 for detection. The current mutual induction coil 4.1 senses the current on the parallel wire passing through the center of its circle, and the leakage current of zinc oxide or overvoltage is determined by analyzing the size of the current value. In the absence of overvoltage, due to the characteristics of zinc oxide, the resistance of zinc oxide is infinite, and the leakage current is a few microamperes. When the insulation of zinc oxide decreases, the resistance value of zinc oxide decreases. The high voltage loaded on the top of the zinc oxide arrester will have a weak leakage current relative to the earth. At this time, when the leakage current flows to the bottom zinc oxide resistor 2, the leakage current will flow into the earth through the current lead 5 with small resistance. At this time, the current transformer used can sense the leakage current on the parallel wire. The current sensed by the current transformer passes through the high-precision sampling resistor to form a voltage input to the high-precision sampling chip. The ceramic capacitor is loaded at both ends of the sampling resistor to filter the PCB's own line noise. The unfiltered noise current is corrected by the software algorithm. The high-precision sampling chip stores the collected voltage value in its own register after a series of processing. When the main control chip queries, the voltage value collected by the high-precision acquisition chip is sent to the main control chip through the SPI port. The main control chip obtains the voltage value of the high-precision sampling chip, and calculates the leakage current value after a series of software processing. This principle and method simultaneously measure the leakage current of zinc oxide lightning arrester and the number of times the zinc oxide lightning arrester is struck by lightning.

[0035] The detection module 4 of the present invention adopts narrowband Internet of Things communication technology. Over-limit data such as overvoltage, lightning arrester aging, and resistor overtemperature are sent in real time and uploaded to the server immediately, and real-time SMS alarm data is sent to the set operation and maintenance personnel's mobile phone. Conventional detection data is transmitted at a set time according to user requirements, which is convenient for management personnel to detect the operating status of the lightning arrester in real time.

[0036] The charging wire led out from the circuit board of the detection module 4 of the present invention passes through the holes 7.3 and 7.4 on the metal stewing cover 7 and is connected to the solar panel 13 outside the shell 12. An external charging socket is welded on the circuit board of the detection module 4, and the socket passes through the hole 7.1 on the metal stewing cover 7. The wire led out from the circuit board of the detection module 4 passes through the hole 7.2 on the metal stewing cover 7 and is connected to the antenna 14 outside the shell 12.

[0037] The preset bolt 11 on the intelligent detection device of the present invention is matched with the disconnector 15. When it is used for a gapless zinc oxide arrester, the disconnector is judged to be disconnected and good or bad by detecting the size of the leakage current. When the leakage current is close to 0, a signal is sent to the background in real time for alarm. The disconnector and the arrester are connected to the ground wire in series. The disconnector is detected by detecting the current flowing through the line. The leakage current detected in the normal operation state of the arrester is 5uA~30uA. When the arrester is working normally and falls off due to a disconnector failure, the overvoltage arrester will not play a role in protecting the line. When the arrester is equipped with an intelligent detection module, the leakage current detected by the disconnector falling off will become close to 0, because the disconnector and the arrester are connected to the ground wire in series, and the disconnector is disconnected and cannot form a closed loop current lead without current flowing.

[0038] The intelligent detection module of the present invention can also be used in conjunction with lightning arresters for various purposes, and lightning protection insulators with lightning arresters Figure 5 , Lightning protection tension insulator with lightning arrester Figure 6 , Gapless arrester with disconnector Figure 7 , Chamber Intelligent Arrester Figure 8 .

[0039] The zinc oxide arrester 20 and the connecting electrode 1 on the intelligent detection device are screwed together as a whole through a conical tightening sealing structure, and the softness of the silicone rubber at the bottom of the arrester is used to make the connection more compact and firm, waterproof and prevent the formation of air gaps to cause discharge.

[0040] The intelligent detection device for zinc oxide lightning arrester is adapted to the lightning insulator 16 with lightning arrester. The prefabricated bolts on the lightning arrester 16 are screwed into the screw holes 1.1 reserved for the connecting electrode 1 and tightened. Then the prefabricated bolts 11 on the metal cover 7 of the intelligent detection device are passed through the holes on the lightning arrester bracket, and the gaskets 11.3 and spring washers 11.2 are placed. The nuts 11.1 are screwed on to form the intelligent lightning insulator with lightning arrester. Figure 5 .

[0041] The intelligent detection device for zinc oxide lightning arrester is adapted to the lightning arrester lightning protection tension insulator 17. The prefabricated bolts on the lightning arrester 17 are screwed into the screw holes 1.1 reserved for the connecting electrode 1 and tightened. Then the prefabricated bolts 11 on the metal cover 7 of the intelligent detection device are passed through the holes on the lightning arrester bracket 17.1. The gaskets 11.3 and spring washers 11.2 are padded and the nuts 11.1 are screwed on to form the intelligent lightning arrester lightning protection tension insulator. Figure 6 .

[0042] The intelligent detection device for zinc oxide lightning arrester is adapted to the gapless lightning arrester 18 with a disconnector. The bolts on the lightning arrester 18 pass through the holes on the insulating bracket 18.1 of the lightning arrester and are screwed into the screw holes 1.1 reserved for the connecting electrode 1 and tightened. Then, the preset bolts 11 on the metal cover 7 of the intelligent detection device are tightened with the screw holes on the disconnector 15 to form an intelligent gapless lightning arrester with a disconnector. Figure 7 .

[0043] Zinc oxide arrester intelligent detection device is suitable for chamber arrester Figure 8 The zinc oxide arrester 20 has an upper contact 20.2, a contact ring 20.1, and a lead fixing pile 20.3. The bolts on the zinc oxide arrester 20 are screwed into the screw holes 1.1 reserved for the connection electrode 1 and tightened. Then, the preset bolts 11 on the metal cover 7 of the intelligent detection device are tightened with the screw holes on the disconnector 15. The lead 15.1 on the disconnector 15 is fixed on the lead fixing pile 20.3 to form the chamber intelligent arrester body. Figure 8 There is a protrusion 12.1 on the housing 12 of the intelligent detection device. Using a special insulating operating rod, the intelligent lightning arrester can be quickly plugged in and out of the insulating cavity (19), thereby realizing rapid replacement of the lightning arrester under power.

[0044] Battery charging and power management, this product uses solar panels 13 for charging, and has a preset external charging port 7.1. The solar panels surround the shell 12 and can absorb solar energy in different directions to charge the battery. During the charging process, a charging protection chip is used. When the battery is full, it can automatically disconnect the charging to avoid overcharging the battery and affecting the battery life. Since the high-precision acquisition chip is powered by 5V and the battery is powered by 3.7V, a boost chip is used to boost the 3.7V power supply to 5V. Due to the use of low-power NBIoT wireless communication technology, the main control chip enters standby mode at the same time, and the power consumption is very low.

Claims

1. An intelligent detection device for zinc oxide lightning arrester, comprising: A connecting electrode (1), a resistor (2), a sheet electrode (3), a detection module (4), a current lead (5), a tubular electrode (6), a metal cover (7), a ring nut (8), a guide cover (9), a nut (10), a preset bolt (11), a shell (12), a solar panel (13), an antenna (14) and a disconnector (15); characterized in that: the detection module (4) is placed in the tubular electrode (6), one end of the tubular electrode (6) is padded with a sheet electrode (3), the resistor (2) is placed on the sheet electrode (3), the resistor (2) is placed on the connecting electrode (1), a current lead (5) is welded to the connecting electrode (1), bypassing the resistor The sheet (2) and the sheet electrode (3) are connected to the tubular electrode (6) through the mutual inductance coil (4.1) on the detection module (4), and the shell (12) is put on. The other end of the tubular electrode (6) is covered with a metal cover (7). The ring nut (8) is inserted into the preset bolt (11) on the metal cover (7) and can be tightened. The guide cover (9) and the nut (10) are inserted into the preset bolt (11) and tightened. The outer periphery of the shell (12) is equipped with a solar panel (13) and an antenna (14). The preset bolt (11) is matched with a disconnector (15) to form an intelligent detection device. The connection electrode (1) on the zinc oxide lightning arrester intelligent detection device is reserved with a screw hole (1.1) adapted to the zinc oxide lightning arrester; The zinc oxide lightning arrester intelligent detection device is adapted to the zinc oxide lightning arrester (20). The zinc oxide lightning arrester (20) is provided with an upper contact (20.2), a stepped metal contact ring (20.1), and a lead fixing pile (20.3). The bolts on the zinc oxide lightning arrester (20) are screwed into the screw holes (1.1) reserved for connecting the electrodes (1) of the zinc oxide lightning arrester intelligent detection device and tightened. Then, the lead (15.1) on the disconnector (15) is fixed on the lead fixing pile (20.3) to form an intelligent chamber lightning arrester. The housing (12) of the zinc oxide lightning arrester intelligent detection device is provided with symmetrical protrusions (12.1). A special insulating operating rod is used to quickly insert and remove the intelligent zinc oxide lightning arrester in the insulating cavity (19) during live operation, thereby realizing rapid live replacement of the lightning arrester. The elastic conductive card fixing ring (19.3) on the insulating cavity (19) has an elastic conductive card (19.1) screwed (19.4) therein, and the elastic conductive card (19.1) is surrounded by an annular tension spring (19.2) to be constantly tightened, so that the stepped metal contact ring (20.1) is more firmly clamped; when the intelligent zinc oxide lightning arrester is inserted with a special insulating operating rod, after the metal stepped contact ring (20.1) reaches the limit stepped metal contact ring step (20.4), the elastic conductive card will be closed to prompt, preventing false contact, and the elastic conductive card blocks the stepped metal contact ring to prevent the lightning arrester body (20) from falling due to its own weight and vibration.

2. The intelligent detection device for zinc oxide lightning arrester according to claim 1, characterized in that: The circuit of the built-in detection module (4) of the zinc oxide lightning arrester intelligent detection device adopts solar charging, battery power supply, external charging socket (7.1), power detection circuit, Beidou positioning transceiver module, and is equipped with a charging and discharging voltage stabilizing circuit, a protection circuit, a temperature sensor, a temperature collection circuit, a signal collection, a mutual inductance coil, a lightning strike counting and leakage current processing circuit, a disconnector detection circuit, a microprocessor CPU, an Internet of Things module and an antenna; The solar panel, battery, external charging circuit and power detection circuit are electrically connected to the voltage stabilizing circuit respectively, the voltage stabilizing circuit is electrically connected to the microprocessor CPU through the protection circuit, the temperature sensor is electrically connected to the microprocessor CPU through the temperature acquisition circuit, the signal acquisition and leakage current lightning strike counting processing circuit are electrically connected, the leakage current lightning strike counting processing circuit is electrically connected to the microprocessor CPU, and a mutual inductance coil is arranged on the connecting circuit between the signal acquisition and the leakage current lightning strike counting processing circuit, the disconnector detection circuit is electrically connected to the leakage current lightning strike counting processing circuit, and the microprocessor CPU sends the processed electrical signal to the mobile phone of the operation and maintenance personnel through the Internet of Things module and the antenna.

3. The intelligent detection device for zinc oxide lightning arrester according to claim 2, characterized in that: The built-in current mutual inductance coil (4.1) of the detection module (4) and the current lead (5) passing through it, the resistor (2), and the tubular electrode (6) form a parallel wiring method, and the current mutual inductance coil (4.1) is used to sense the current on the current lead (5) to detect the leakage current of the zinc oxide lightning arrester and the number of times the zinc oxide lightning arrester is struck by lightning.

4. The intelligent detection device for zinc oxide lightning arrester according to claim 2, characterized in that: The detection module (4) uses narrowband Internet of Things communication technology to send over-limit data indicating overvoltage, arrester aging, and resistor overtemperature in real time and immediately upload them to the server and send real-time SMS alarm data to the mobile phone of the specified operation and maintenance personnel. Conventional detection data is transmitted at a set time according to user requirements, which facilitates management personnel to monitor the operating status of the arrester in real time.

5. The intelligent detection device for zinc oxide lightning arrester according to claim 2, characterized in that: The charging wire led out from the circuit board of the detection module (4) passes through a first cover hole on the metal cover (7) and is connected to a solar panel (13) outside the shell (12); an external charging socket is welded on the circuit board of the detection module (4), and the socket passes through a second cover hole on the metal cover (7); the wire led out from the circuit board of the detection module (4) passes through a third cover hole on the metal cover (7) and is connected to an antenna (14) outside the shell (12).

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