Lightning arrester monitoring device

Abstract

The utility model provides a lightning arrester monitoring device which is applied to the technical field of lightning arrester monitoring. The device comprises an upper shell and a lower shell which are detachably connected, a battery cover and an antenna are arranged on the inner wall of the lower shell; the battery cover is detachably connected with the battery cover; a battery is arranged in the battery cover; the upper shell is provided with a main control board; the first external bolt sequentially passes through a first waterproof gasket, a first metal gasket and a first fastening nut and is fixed on the upper shell in a penetrating manner; the second external bolt is fixed on the lower shell in a penetrating manner through a second waterproof gasket, a second metal gasket and a second fastening nut in sequence; the first external bolt is electrically connected with the resistor through the first elastic sheet; the second external bolt is electrically connected with the resistor through the second elastic sheet; the resistor is electrically connected with the main control board; and the main control board is electrically connected with the battery. In this way, the monitoring efficiency of the lightning arrester can be improved.

Description

Technical Field

[0001] The utility model relates to the field of arrester monitoring, in particular to an arrester monitoring device. Background Art

[0002] An arrester, also known as a lightning protector, is a device used to protect electrical equipment from lightning overvoltage. The high voltage generated during lightning discharge can cause serious damage to the equipment in the power system. The main function of the arrester is to lead these overvoltages to the ground, thereby protecting the safety of the power system. During long-term use, the arrester may experience performance degradation or failure due to frequent lightning strikes, harsh environments, and other factors. The arrester monitoring device can detect these problems in a timely manner, avoid the impact of lightning overvoltage on the equipment due to the failure of the arrester, and thus improve the reliability of the power system; the arrester monitoring device can prevent damage to electrical equipment or system shutdown caused by the failure of the arrester. Through real-time monitoring, it can immediately issue an alarm when the arrester fails, and then take corresponding measures to prevent the further expansion of the accident and ensure the safe operation of the entire power system; traditional arrester maintenance usually requires regular inspections and tests, which are not only time-consuming but also costly. After using the monitoring device, the operation and maintenance personnel can carry out targeted maintenance based on the monitoring data, reduce unnecessary maintenance work, and thus reduce the operation and maintenance costs. Therefore, the arrester monitoring device is of great significance.

[0003] Currently, the prior art for testing arresters is usually carried out offline. That is, first, the arrester is disconnected from the grounding circuit, and then the independent arrester is tested to determine whether its performance is good. The process is time-consuming and laborious, resulting in low efficiency in monitoring arresters. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an arrester monitoring device to solve the above problems.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] An arrester monitoring device includes:

[0007] An upper shell (1) and a lower shell (2), the upper shell (1) and the lower shell (2) are detachably connected; a battery cover (3) and an antenna (6) are provided on the inner wall of the lower shell (2); the battery cover (3) and the battery lid (4) are detachably connected; a battery (5) is provided inside the battery cover (3); the upper shell (1) is provided with a main control board (7); a first external bolt (8), the first external bolt (8) passes through and is fixed on the upper shell (1) in sequence through a first waterproof gasket (9), a first metal gasket (10) and a first fastening nut (11); a second external bolt (12), the second external bolt (12) passes through and is fixed on the lower shell (2) in sequence through a second waterproof gasket (13), a second metal gasket (14) and a second fastening nut (15); the first external bolt (8) is electrically connected through a first elastic sheet (16) and a resistor (17); the second external bolt (12) is electrically connected through a second elastic sheet (18) and a resistor (17); the resistor (17) is electrically connected to the main control board (7); the main control board (7) is electrically connected to the battery (5).

[0008] Further: A first waterproof rubber strip (19) is provided between the upper shell (1) and the lower shell (2).

[0009] Further: A second waterproof rubber strip (20) is provided between the battery cover (3) and the battery lid (4).

[0010] Further: The materials of the upper shell (1) and the lower shell (2) are ASA plastic materials.

[0011] Further: The materials of the first external bolt (8) and the second external bolt (12) are 304 stainless steel.

[0012] Further: The battery (5) is a 3.6V power type battery.

[0013] Further: The main control board (7) integrates a power control module and a radio frequency module.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The detachable design of the upper shell 1 and the lower shell 2 makes the maintenance and replacement of components more convenient; setting the first waterproof rubber strip can effectively prevent the entry of moisture and dust, thereby protecting the internal components from the external environment, improving the durability and reliability of the device, and further improving the efficiency of monitoring the lightning arrester;

[0016] 2. The detachable design of the battery cover and the battery lid facilitates the user to replace or repair the battery, avoiding the complex process of disassembling the entire housing, reducing the maintenance time and labor intensity, and further improving the efficiency of monitoring the lightning arrester. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 The perspective view of a lightning arrester monitoring device provided by the embodiment of the present invention is shown;

[0019] Figure 2 The top view of a lightning arrester monitoring device provided by the embodiment of the present invention is shown;

[0020] Figure 3 The perspective view of a lightning arrester monitoring device provided by the embodiment of the present invention after removing the upper shell is shown;

[0021] Figure 4 The cross-sectional view of a lightning arrester monitoring device provided by the embodiment of the present invention is shown;

[0022] The description of the reference numerals is as follows:

[0023] 1. Upper shell; 2. Lower shell; 3. Battery cover; 4. Battery lid; 5. Battery; 6. Antenna; 7. Main control board; 8. First external bolt; 9. First waterproof gasket; 10. First metal gasket; 11. First fastening nut; 12. Second external bolt; 13. Second waterproof gasket; 14. Second metal gasket; 15. Second fastening nut; 16. First elastic sheet; 17. Resistor; 18. Second elastic sheet; 19. First waterproof rubber strip; 20. Second waterproof rubber strip. Specific embodiments

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more than two.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0026] The present utility model will be further described below with reference to the drawings:

[0027] As Figures 1 - 4 shown, a lightning arrester monitoring device includes:

[0028] The upper shell 1 is made of ASA plastic material and the lower shell 2 is made of ASA plastic material. The upper shell 1 and the lower shell 2 are detachably connected, and a first waterproof rubber strip 19 is arranged between the upper shell 1 and the lower shell 2; according to the embodiment of the present invention, the detachable design of the upper shell 1 and the lower shell 2 makes it more convenient to maintain and replace components; setting the first waterproof rubber strip can effectively prevent moisture and dust from entering, thereby protecting the internal components from the external environment, improving the durability and reliability of the device, and further improving the monitoring efficiency of the lightning arrester; a battery cover 3 and an antenna 6 are arranged on the inner wall of the lower shell 2; the battery cover 3 and the battery cover 4 are detachably connected, and a second waterproof rubber strip 20 is arranged between the battery cover 3 and the battery cover 4; a battery 5 (such as a 3.6V power battery) is arranged in the battery cover 3; a main control board 7 is arranged on the upper shell 1; according to the embodiment of the present invention, the detachable design of the battery cover and the battery cover facilitates the user to replace or repair the battery, avoiding the complex process of disassembling the entire housing, reducing the maintenance time and labor intensity, and further improving the monitoring efficiency of the lightning arrester; a first external bolt 8 made of 304 stainless steel, the first external bolt 8 passes through and is fixed on the upper shell 1 in sequence through a first waterproof gasket 9, a first metal gasket 10 and a first fastening nut 11; a second external bolt 12 made of 304 stainless steel, the second external bolt 12 passes through and is fixed on the lower shell 2 in sequence through a second waterproof gasket 13, a second metal gasket 14 and a second fastening nut 15; the first external bolt 8 is electrically connected to the resistor 17 through a first elastic sheet 16; the second external bolt 12 is electrically connected to the resistor 17 through a second elastic sheet 18; the resistor 17 is electrically connected to the main control board 7; the main control board 7 is electrically connected to the battery 5.

[0029] In some embodiments, the main control board 7 integrates a power control module and a radio frequency module.

[0030] In some embodiments, the power control module integrates a protection device for providing a discharge path for surge static electricity.

[0031] In some embodiments, the power control module uses a linear voltage regulator (LDO), with small power supply ripple and a standby current consumption of <1 μA.

[0032] In some embodiments, the main control board integrates a leakage current conditioning circuit, a counter circuit, and a single-chip microcomputer peripheral circuit; the leakage current conditioning circuit is used to amplify the collected current and voltage signals; the counter circuit is used to count the collected voltage signals; the single-chip microcomputer peripheral circuit is used to control the leakage current conditioning and counter functions, combine and process the signals of the amplification circuit and the counting circuit, analyze the discharge level received by the lightning arrester through filtering counting and leakage current calculation, save the detection results to Flash, and send the result information through wireless LoRa.

[0033] In some embodiments, the counter circuit is composed of a triode and a D flip-flop. The D flip-flop is selected as a standby low-power model and is constantly powered by a 3V voltage. This ensures continuous operation with low power consumption while also being able to detect changes in the output level of the flip-flop when a lightning strike occurs.

[0034] In some embodiments, the operational amplifier in the leakage current conditioning circuit uses the COS1333TR model. After filtering and amplification, the final signal is collected by the A / D analog-to-digital converter of the single-chip microcomputer. A power controller composed of a triode and a MOS tube is used to control the power-off of the leakage current conditioning circuit. When the lightning arrester monitoring sensor performs a timed self-check or the counter circuit detects a lightning strike count, the single-chip microcomputer controls the power supply of the leakage current conditioning circuit to collect and analyze the leakage current.

[0035] During other times, the power supply of the leakage current conditioning circuit is in the off state.

[0036] In some embodiments, the single-chip microcomputer in the peripheral circuit of the single-chip microcomputer uses the HC32L196JCTA-LQ48. This single-chip microcomputer has an ultra-low power consumption mode, has a 256K-capacity Flash, and has a highly secure hardware design with a Flash operation source defense function. The Flash of the single-chip microcomputer is used to implement functions such as storing lightning arrester monitoring data, storing and upgrading system firmware. Among them, the 0 to 32K of the Flash address has higher security, and important functions must be placed in this area, such as important program entry points and interrupt entry points. When implementing the IAP online upgrade function, the Flash is divided into a Bootload program area and an application program area. The Bootload program is stored at the starting address of the Flash, so that the single-chip microcomputer will execute the Bootload program first after power-on. Then, in the Bootload program, the program needs to be jumped to the stack top address of the application program, and then the single-chip microcomputer will start executing the code of the application program.

[0037] In some embodiments, the radio frequency module uses the SX1278 chip. This chip uses LoRa spread-spectrum modulation and frequency hopping technology, and its communication distance and receiving sensitivity far exceed those of current FSK and GFSK modulations. Multiple transmitted signals occupy the same channel without being affected, and it has strong anti-interference ability. The antenna switch of this radio frequency module is integrated and controlled inside the chip, and its small size makes it widely used in industries such as wireless meter reading and remote industrial control. In the low-power hardware design scheme of the SX1278 chip, by optimizing the power supply circuit, radio frequency circuit, and peripheral circuit, a low-power Internet of Things node is realized. This node can achieve remote communication with the cloud platform, thereby realizing remote monitoring and control of Internet of Things applications. The low-power design is suitable for battery-powered applications, supports fast on and off times, and can quickly enter and exit the low-power mode, thus extending the battery life of the device.

[0038] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A lightning arrester monitoring device, characterized in that: include: An upper shell (1) and a lower shell (2), wherein the upper shell (1) and the lower shell (2) are detachably connected; a battery cover (3) and an antenna (6) are arranged on the inner wall of the lower shell (2); the battery cover (3) and the battery cover (4) are detachably connected; a battery (5) is arranged in the battery cover (3); the upper shell (1) is provided with a main control board (7); a first external bolt (8), wherein the first external bolt (8) is penetrated and fixed to the upper shell (7) through a first waterproof gasket (9), a first metal gasket (10) and a first fastening nut (11) in sequence; 1); a second external bolt (12), the second external bolt (12) is fixed on the lower shell (2) by passing through a second waterproof gasket (13), a second metal gasket (14) and a second fastening nut (15) in sequence; the first external bolt (8) is electrically connected to a resistor (17) through a first spring sheet (16); the second external bolt (12) is electrically connected to a resistor (17) through a second spring sheet (18); the resistor (17) is electrically connected to a main control board (7); the main control board (7) is electrically connected to a battery (5).

2. The lightning arrester monitoring device according to claim 1, characterized in that: A first waterproof rubber strip (19) is provided between the upper shell (1) and the lower shell (2).

3. The arrester monitoring device according to claim 2, characterized in that: A second waterproof adhesive strip (20) is provided between the battery cover (3) and the battery lid (4).

4. The arrester monitoring device according to claim 3, characterized in that: The upper shell (1) and the lower shell (2) are made of ASA plastic material.

5. The arrester monitoring device according to claim 4, characterized in that: The first external bolt (8) and the second external bolt (12) are made of 304 stainless steel.

6. The arrester monitoring device according to claim 5, characterized in that: The battery (5) is a 3.6V power battery.

7. The arrester monitoring device according to claim 6, characterized in that: The main control board (7) is integrated with a power control module and a radio frequency module.

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