Lightning arrester on-line monitoring device

Abstract

The utility model relates to the field of lightning arrester on-line monitoring devices, and discloses a lightning arrester on-line monitoring device which comprises a mounting frame and a lightning arrester base, the top end of the mounting frame is fixedly connected with the lightning arrester base, the top end of the lightning arrester base is fixedly connected with a lightning arrester body, a support is fixedly connected in the lightning arrester base, and the lightning arrester body is fixedly connected with the support. A fixing seat is fixedly connected to the top end of the support, a fixing plate is fixedly connected to the top of the fixing seat, and a shell is welded to the top of the fixing plate. According to the lightning arrester on-line monitoring device capable of supporting the self-diagnosis and the end side analysis, the connecting terminal is arranged, the device main body part is installed in the lightning arrester base arranged on the lightning arrester body, the device main body part is connected with the lightning arrester body through the connecting terminal and the connecting line, the leakage current energy taking is lower than 100 uA, and intermittent work is achieved; the output end is connected to a main grounding grid through a lead, a voltage signal is not needed, an additional power supply or a voltage synchronous cable does not need to be laid, and the problem that the lightning arrester needs to take electricity additionally is solved.

Description

Technical Field

[0001] This utility model relates to the field of circuit power grid technology, specifically to an online monitoring device for surge arresters that can be applied to circuit power grids. Background Technology

[0002] Online surge arrester monitoring devices are power auxiliary equipment used to monitor the status and collect data of surge arresters in operation. They can determine the insulation status and service life of surge arresters, and prevent breakdown or failure accidents during operation. Currently, online surge arrester monitoring devices on the market require additional external power cables or voltage synchronization signal lines to maintain operation. This not only increases the amount of installation work, but also easily leads to problems such as poor contact and cable aging due to complex wiring. In addition, the installation and replacement of such devices usually require disconnecting the surge arrester circuit for power outage operations, which increases the maintenance burden and affects power supply. Utility Model Content

[0003] The purpose of this invention is to provide an online monitoring device for surge arresters to solve the problem mentioned in the background art that requires additional external power cables.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an online monitoring device for surge arresters, comprising a mounting frame and a surge arrester base. The surge arrester base is fixedly connected to the top of the mounting frame, and the surge arrester body is fixedly connected to the top of the surge arrester base. A bracket is fixedly connected inside the surge arrester base, and a fixing seat is fixedly connected to the top of the bracket. A fixing plate is fixedly connected to the top of the fixing seat, and a housing is welded to the top of the fixing plate. A connection terminal is provided on the left side of the housing, and a connecting wire connects the surge arrester body and the connection terminal.

[0005] As a further technical solution of this utility model, the surge arrester base is hollow inside, and the left side of the surge arrester base is closed.

[0006] As a further technical solution of this utility model, the connecting wire extends through the left side wall of the surge arrester base into the housing. A wire groove is provided at the connection between the connecting wire and the surge arrester base. An insulating rubber sheet is glued into the wire groove, and a channel for the connecting wire to pass through is formed in the center of the insulating rubber sheet.

[0007] As a further technical solution of this utility model, the bottom edge of the fixing seat is sloping, and the shape of the fixing seat matches that of the surge arrester base.

[0008] As a further technical solution of this utility model, a first bolt is fixedly connected between the fixed base and the fixed plate, a second bolt is fixedly connected between the fixed base and the bracket, and a third bolt is fixedly connected between the bracket and the mounting frame.

[0009] As a further technical solution of this utility model, the bracket and the fixed base form an "I"-shaped support structure.

[0010] As a further technical solution of this utility model, the outer wall of the housing is machined with a mounting groove, and an instrument panel is fixedly connected in the mounting groove.

[0011] As a further technical solution of this utility model, the housing is connected to the main grounding grid via a wire.

[0012] (1) Compared with the prior art, the beneficial effects of this utility model are: the online monitoring device for surge arresters not only facilitates the use of the leakage current of the surge arrester itself for power generation without the need to lay additional power supply or voltage synchronization cable, but also enables the device to be installed and used immediately without power interruption. It has good anti-corrosion, anti-moisture, anti-pollution, and anti-vibration capabilities, ensuring the safe operation of the equipment. In addition, it enables an intuitive understanding of the operating status of the surge arrester body and supports the analysis and diagnosis of the operating status of the surge arrester body. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model;

[0014] Figure 2 This is a side view of the shell structure of this utility model;

[0015] Figure 3 This is a front view structural diagram of the connection terminal of this utility model;

[0016] Figure 4 This is a side view of the wire trough structure of this utility model.

[0017] In the diagram: 1. Surge arrester body; 2. Connecting wire; 3. Wire trough; 4. Connecting terminal; 5. Surge arrester base; 6. Housing; 7. Fixing plate; 8. Fixing seat; 9. Bracket; 10. First bolt; 11. Second bolt; 12. Third bolt; 13. Mounting bracket; 14. Mounting slot; 15. Instrument panel; 16. Insulating rubber sheet. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4An embodiment of this utility model provides: an online monitoring device for surge arresters that supports self-diagnosis and end-side analysis, including a mounting frame 13 and a surge arrester base 5. The surge arrester base 5 is fixedly connected to the top of the mounting frame 13, and the surge arrester body 1 is fixedly connected to the top of the surge arrester base 5. A bracket 9 is fixedly connected inside the surge arrester base 5, a fixing seat 8 is fixedly connected to the top of the bracket 9, a fixing plate 7 is fixedly connected to the top of the fixing seat 8, a housing 6 is welded to the top of the fixing plate 7, a connecting terminal 4 is provided on the left side of the housing 6, a connecting wire 2 is connected between the surge arrester body 1 and the connecting terminal 4, the surge arrester base 5 is hollow inside, and the left side of the surge arrester base 5 is closed.

[0020] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device is installed inside the arrester base 5 of the arrester body 1 and is connected to the arrester body 1 through the connecting terminal 4 and the connecting line 2. The leakage current is less than 100uA and it works intermittently. The output terminal is connected to the main grounding grid through the wire. No voltage signal is required. It performs high-speed sampling and uses the harmonic analysis method to calculate the resistive current of the arrester body 1. It can realize real-time online monitoring of the total current, resistive current, capacitive current, number of lightning strikes and lightning strike time of the arrester body 1.

[0021] The connecting wire 2 extends through the left side wall of the surge arrester base 5 into the housing 6. A wire groove 3 is provided at the connection between the connecting wire 2 and the surge arrester base 5. An insulating rubber sheet 16 is glued inside the wire groove 3. A channel for the connecting wire 2 to pass through is formed in the center of the insulating rubber sheet 16. The bottom edge of the fixing seat 8 is sloping. The fixing seat 8 matches the shape of the surge arrester base 5. The fixing seat 8 is fixedly connected to the fixing plate 7 by a first bolt 10. The fixing seat 8 is fixedly connected to the bracket 9 by a second bolt 11. The bracket 9 is fixedly connected to the mounting bracket 13 by a third bolt 12. The bracket 9 and the fixing seat 8 form an "I"-shaped support structure.

[0022] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device uses a fixed base 8 and a bracket 9 to support and fix it to form an "I"-shaped fixing structure, which is convenient for disassembly and stable installation. An insulating rubber sheet 16 is provided at the wire groove 3 to constrain the connecting wire 2 and prevent the connecting wire 2 from bending or breaking. The instrument panel 15 is made of die-cast aluminum one-piece shell, which has good anti-corrosion, moisture-proof, anti-fouling and shockproof capabilities.

[0023] The outer wall of the housing 6 is machined with a mounting groove 14, and an instrument panel 15 is fixedly connected in the mounting groove 14. The housing 6 is connected to the main grounding grid through a wire.

[0024] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, by combining dynamic phasor compensation algorithm and digital filtering algorithm, accurate measurement signal analysis can be achieved. Equipped with dedicated surge arrester monitoring APP software, the operating parameters of surge arrester body 1 can be monitored in real time, and the operating status of surge arrester body 1 can be intuitively understood. It also supports the analysis and diagnosis of the operating status of surge arrester body 1.

[0025] Working principle: The device is installed inside the arrester base 5 of the arrester body 1, and is connected to the arrester body 1 through the connecting terminal 4 and the connecting wire 2. The leakage current is less than 100uA, and it operates intermittently. The output terminal is connected to the main grounding grid through a wire. No voltage signal is required. High-speed sampling is used, and the resistive current of the arrester body 1 is calculated using harmonic analysis. It can realize real-time online monitoring of the total current, resistive current, capacitive current, number of lightning strikes, and lightning strike time of the arrester body 1. The device is supported and fixed by the fixing base 8 and the bracket 9 to form an "I" fixed structure, which facilitates disassembly and installation. The device is securely installed, with insulating rubber sheets 16 at the wire trough 3 to constrain the connecting wire 2 without causing it to bend or break. The instrument panel 15 is made of die-cast aluminum unibody housing, which has good anti-corrosion, moisture-proof, anti-fouling, and shock-proof capabilities, and can operate for a long time. It adopts a combination of dynamic phasor compensation algorithm and digital filtering algorithm to achieve accurate measurement signal analysis. It is equipped with dedicated surge arrester monitoring APP software, which can intuitively understand the operating status of surge arrester body 1 by monitoring the operating parameters of surge arrester body 1 in real time, and supports analysis and diagnosis of the operating status of surge arrester body 1.

[0026] The beneficial effects of this utility model include: the online monitoring device for surge arresters not only facilitates the use of the leakage current of the surge arrester itself for power, eliminating the need to lay additional power supplies or voltage synchronization cables, enabling uninterrupted installation and use, and achieving excellent anti-corrosion, moisture-proof, anti-pollution, and shock-proof capabilities to ensure the safe operation of the equipment, but also enables an intuitive understanding of the operating status of the surge arrester body and supports the analysis and diagnosis of the operating status of the surge arrester body.

[0027] Specifically, the device is equipped with connection terminals, connecting wires, and a surge arrester base. The main body of the device is installed inside the surge arrester base and connected to the surge arrester body via the connection terminals and connecting wires. The leakage current energy extraction is less than 100uA, and it operates intermittently. The output terminal is connected to the main grounding grid via a wire. No voltage signal is required. High-speed sampling is used, and the resistive current of the surge arrester body is calculated using harmonic analysis. Real-time online monitoring of the total current, resistive current, capacitive current, number of lightning strikes, and lightning strike time of the surge arrester body can be achieved. Power is extracted from the leakage current of the surge arrester body itself, which is convenient. It adopts the State Grid standard LoRa communication technology, which is convenient, fast, and highly safe. No additional power supply or voltage synchronization cable needs to be laid. It can be installed and used immediately without power outages, reducing the occurrence of accidents, extending the maintenance cycle, reducing the number and time of power outage maintenance, and improving equipment utilization and overall economic benefits.

[0028] The device is equipped with a fixed base, bracket, insulating rubber sheet, and instrument panel. The fixed base and bracket form an "I"-shaped fixing structure, which facilitates disassembly while ensuring stable installation. The wire trough is equipped with an insulating rubber sheet to restrain the connecting wires without causing them to bend or break. The instrument panel is made of die-cast aluminum unibody shell, which has good anti-corrosion, moisture-proof, anti-fouling, and shock-proof capabilities, and can operate for a long time. It can promptly detect abnormalities caused by factors such as performance degradation, aging, and moisture in the surge arrester, prevent accidents from occurring or escalating, and ensure the safe operation of the equipment.

[0029] By incorporating a surge arrester body and employing a combination of dynamic phasor compensation and digital filtering algorithms, accurate measurement signal analysis can be achieved. Equipped with a dedicated surge arrester monitoring APP, the operating parameters of the surge arrester body can be monitored in real time, providing an intuitive understanding of the operating status of the surge arrester body and supporting analysis and diagnosis of its operating status.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An online monitoring device for surge arresters, comprising a mounting bracket (13) and a surge arrester base (5), characterized in that: The mounting bracket (13) is fixedly connected to the top of the surge arrester base (5), the surge arrester body (1) is fixedly connected to the top of the surge arrester base (5), the surge arrester base (5) is fixedly connected to the inside of the surge arrester base (5), the top of the bracket (9) is fixedly connected to the top of the bracket (9), the top of the fixed seat (8) is fixedly connected to the top of the fixed seat (8), the top of the fixed seat (7) is welded to the top of the fixed seat (7), the left side of the fixed seat (6) is provided with a connecting terminal (4), and a connecting wire (2) is connected between the surge arrester body (1) and the connecting terminal (4).

2. The online monitoring device for surge arresters according to claim 1, characterized in that: The surge arrester base (5) is hollow inside, and the left side of the surge arrester base (5) is closed.

3. The online monitoring device for surge arresters according to claim 1, characterized in that: The connecting line (2) extends through the left side wall of the arrester base (5) into the housing (6). A wire groove (3) is provided at the connection between the connecting line (2) and the arrester base (5). An insulating rubber sheet (16) is glued inside the wire groove (3). A channel for the connecting line (2) to pass through is formed in the center of the insulating rubber sheet (16).

4. The online monitoring device for surge arresters according to any one of claims 1 to 3, characterized in that: The bottom edge of the fixing seat (8) is sloping, and the fixing seat (8) matches the shape of the surge arrester base (5).

5. The online monitoring device for surge arresters according to claim 4, characterized in that: The fixing seat (8) is fixedly connected to the fixing plate (7) by a first bolt (10), the fixing seat (8) is fixedly connected to the bracket (9) by a second bolt (11), and the bracket (9) is fixedly connected to the mounting bracket (13) by a third bolt (12).

6. The surge arrester online monitoring device according to any one of claims 1 to 3, characterized in that: The bracket (9) and the fixed seat (8) form an "I"-shaped support structure.

7. The online monitoring device for surge arresters according to any one of claims 1 to 3, characterized in that: The outer wall of the housing (6) is machined with a mounting groove (14), and an instrument panel (15) is fixedly connected in the mounting groove (14).

8. The online monitoring device for surge arresters according to any one of claims 1 to 3, characterized in that: The housing (6) is connected to the main grounding grid via a wire.

9. The online monitoring device for surge arresters according to claim 4, characterized in that: The housing (6) is connected to the main grounding grid via a wire.

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