Insulation online monitoring device applied to high-voltage lightning arrester

Abstract

The utility model relates to the technical field of power monitoring, in particular to an insulation on-line monitoring device applied to a high-voltage lightning arrester, which comprises a protection box, a circuit board is fixed in the protection box through bolts, a central data processing module, a high-speed data acquisition module and a communication module are sequentially welded on one side of the circuit board, and the central data processing module is connected with the high-speed data acquisition module. A solar power taking and supplying assembly is arranged at the top of the protection box; the lightning impulse current on the high-voltage lightning arrester is detected through the Rogowski coil current transformer, and the Rogowski coil current transformer is suitable for measuring transient current and high-frequency large current and has the advantages that the current can be measured in real time, the response speed is high, saturation is avoided, and almost no phase error exists. And data acquired by the Rogowski coil current transformer is transmitted to the central data processing module through the high-speed data acquisition module, is processed by the central data processing module and then is transmitted to control equipment such as a computer through the communication module, so that the aim of monitoring the insulating capacity of the high-voltage lightning arrester on line is fulfilled.

Description

Technical Field

[0001] This utility model relates to the field of power monitoring technology, specifically to an online insulation monitoring device applied to high-voltage surge arresters. Background Technology

[0002] A high-voltage surge arrester is a type of surge arrester used in power systems. Its voltage level is generally above 1000 kV. It is used to protect high-voltage power equipment from the hazards of high transient overvoltages during lightning strikes. When assessing the impact of the surge arrester's health status on the stable operation of the power system, measuring the lightning current is a very important task.

[0003] The traditional and most commonly used technology is to use an electromagnetic induction current transformer with an iron core to detect high-voltage surge arresters. However, there are some problems in the use of this type of transformer, such as large size and weight, magnetic saturation, etc., which affect the time and effort required for installation and the inaccuracy of measurement. Therefore, an online insulation monitoring device for high-voltage surge arresters is proposed. It detects the lightning current on the high-voltage surge arrester through a Rogowski coil current transformer. It has the characteristics of real-time current measurement, fast response speed, no saturation, and almost no phase error. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides an online insulation monitoring device for high-voltage surge arresters. It detects the lightning current on the high-voltage surge arrester through a Rogowski coil current transformer, and features real-time current measurement, fast response speed, no saturation, and almost no phase error.

[0005] The technical solution adopted by this utility model to solve its technical problem is an online insulation monitoring device applied to high-voltage surge arresters, including a protective box. A circuit board is fixed inside the protective box by bolts. A central data processing module, a high-speed data acquisition module and a communication module are sequentially welded to one side of the circuit board. A solar power supply component is provided on the top of the protective box.

[0006] An impulse current detection component is provided on one side of the protective box. The impulse current detection component includes a first protective sleeve and a second protective sleeve. The second protective sleeve is located on one side of the first protective sleeve. Both the first and second protective sleeves are equipped with Rogowski coil current transformers fixed at equal intervals by bolts.

[0007] By adopting the above technical solution, the first and second protective sleeves are snapped onto the high-voltage surge arrester. The lightning current on the high-voltage surge arrester is detected by the Rogowski coil current transformer. The data collected by the Rogowski coil current transformer is transmitted to the central data processing module through the high-speed data acquisition module. After being processed by the central data processing module, it is transmitted to the computer and other control equipment through the communication module, so as to achieve the purpose of online monitoring of the insulation capacity of the high-voltage surge arrester.

[0008] Specifically, both the high-speed data acquisition module and the communication module are soldered to one side of the circuit board located at the top of the central data processing module, and the communication module is located on one side of the high-speed data acquisition module.

[0009] Specifically, the solar power supply assembly includes a solar photovoltaic panel mounted on the top of the protective box via a mounting bracket. A storage box is mounted on the top of the protective box via a mounting bracket, and an inverter is fixed to the top of the protective box on one side of the storage box via bolts.

[0010] Specifically, the protective box is located on the top of the solar photovoltaic panel and is fixed with an antenna by bolts. The signal output terminal of the communication module is electrically connected to the signal input terminal of the antenna through a signal line.

[0011] Specifically, the protective box has a door hinged to one side.

[0012] The beneficial effects of this utility model are:

[0013] (1) The insulation online monitoring device applied to high voltage surge arresters described in this utility model, the data collected by the Rogowski coil current transformer is transmitted to the central data processing module through the high-speed data acquisition module, and after being processed by the central data processing module, it is transmitted to the computer and other control equipment through the communication module to achieve the purpose of online monitoring of the insulation capacity of the high voltage surge arrester. The antenna setting increases the signal transmission range of the communication module.

[0014] (2) The insulation online monitoring device applied to high voltage surge arresters described in this utility model converts the heat energy in sunlight into electrical energy through solar photovoltaic panels and transmits it to the storage box for storage. The DC power in the storage box is converted into AC power by an inverter and supplies power to the Rogowski coil current transformer, central data processing module, high-speed data acquisition module and communication module. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a schematic diagram of the internal structure of the protective box of this utility model;

[0018] Figure 3 This is a schematic diagram of the impact current detection component of this utility model;

[0019] In the diagram: 1. Protective box; 2. Inrush current detection component; 201. First protective sleeve; 202. Second protective sleeve; 203. Rogowski coil current transformer; 3. Solar power supply component; 301. Solar photovoltaic panel; 302. Storage box; 303. Inverter; 4. Antenna; 5. Circuit board; 6. Central data processing module; 7. High-speed data acquisition module; 8. Communication module; 9. Box door. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Detecting lightning current on high-voltage surge arresters using Rogowski coil current transformers offers advantages such as real-time current measurement, fast response, no saturation, and virtually no phase error. Figure 1-3 As shown, the present invention provides an online insulation monitoring device for high-voltage surge arresters, comprising a protective box 1, a circuit board 5 fixed inside the protective box 1 by bolts, a central data processing module 6, a high-speed data acquisition module 7 and a communication module 8 sequentially welded to one side of the circuit board 5, and a solar power supply component 3 provided on the top of the protective box 1.

[0022] The protective box 1 is provided with an impulse current detection component 2 on one side. The impulse current detection component 2 includes a first protective sleeve 201 and a second protective sleeve 202. The second protective sleeve 202 is disposed on one side of the first protective sleeve 201. Both the first protective sleeve 201 and the second protective sleeve 202 are fixed with Rogowski coil current transformers 203 at equal intervals by bolts.

[0023] In use, the first protective sleeve 201 and the second protective sleeve 202 are fastened onto the high-voltage surge arrester. The lightning current on the high-voltage surge arrester is detected by the Rogowski coil current transformer 203. The data collected by the Rogowski coil current transformer 203 is transmitted to the central data processing module 6 via the high-speed data acquisition module 7. After being processed by the central data processing module 6, it is transmitted to control equipment such as computers via the communication module 8, so as to realize the purpose of online monitoring of the insulation capacity of the high-voltage surge arrester.

[0024] For example, such as Figure 2As shown, the present invention also includes the high-speed data acquisition module 7 and the communication module 8, both of which are soldered to one side of the circuit board 5 located at the top of the central data processing module 6, and the communication module 8 is disposed on one side of the high-speed data acquisition module 7.

[0025] In use, the high-speed data acquisition module 7 is used for data acquisition, the central data processing module 6 is used for data processing, and the communication module 8 is used for data transmission.

[0026] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a solar power supply component 3 comprising a solar photovoltaic panel 301 mounted on the top of the protective box 1 via a mounting bracket, a storage box 302 mounted on the top of the inner side of the protective box 1 via a mounting bracket, and an inverter 303 fixed to the top of the inner side of the protective box 1 on the side of the storage box 302 via bolts.

[0027] When in use, the electrical energy converted by the solar photovoltaic panel 301 is transmitted to the storage box 302 for storage, and the inverter 303 is used to convert the DC power output by the storage box 302 into AC power.

[0028] For example, such as Figure 1 As shown, the present invention also includes an antenna 4 fixed to the top of the protective box 1 on one side of the solar photovoltaic panel 301 by bolts, and the signal output terminal of the communication module 8 is electrically connected to the signal input terminal of the antenna 4 through a signal line.

[0029] When in use, the antenna 4 can improve the signal transmission range of the communication module 8.

[0030] For example, such as Figure 1 As shown, the present invention also includes a door 9 hinged to one side of the protective box 1.

[0031] When in use, the door 9 is used to cover one side of the protective box 1.

[0032] In use, personnel place the first protective sleeve 201 and the second protective sleeve 202 on the high-voltage surge arrester and use bolts to fix the closed first protective sleeve 201 and the second protective sleeve 202, so that the Rogowski coil current transformer 203 is placed on the outside of the high-voltage surge arrester. The Rogowski coil current transformer 203 is suitable for measuring transient current and high-frequency large current, and has the characteristics of real-time current measurement, fast response speed, no saturation, and almost no phase error.

[0033] The data collected by the Rogowski coil current transformer 203 is transmitted to the central data processing module 6 via the high-speed data acquisition module 7. After being processed by the central data processing module 6, it is transmitted to control equipment such as computers via the communication module 8 to achieve the purpose of online monitoring of the insulation capacity of the high-voltage surge arrester. The antenna 4 increases the signal transmission range of the communication module 8.

[0034] When sunlight conditions permit, the solar photovoltaic panel 301 converts the heat energy in the sunlight into electrical energy and transmits it to the storage box 302 for storage. The DC power in the storage box 302 is converted into AC power by the inverter 303 and supplies power to the Rogowski coil current transformer 203, the central data processing module 6, the high-speed data acquisition module 7 and the communication module 8.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An insulation on-line monitoring device applied on a high voltage surge arrester, characterized in that, The application relates to a protective box (1) internally bolted with a circuit board (5), one side of the circuit board (5) sequentially welded with a central data processing module (6), a high-speed data acquisition module (7) and a communication module (8), and the top of the protective box (1) provided with a solar power supply assembly (3). An impact current detection assembly (2) is arranged on one side of the protective box (1), the impact current detection assembly (2) comprises a first protective sleeve (201) and a second protective sleeve (202), the second protective sleeve (202) is arranged on one side of the first protective sleeve (201), and a Rogowski coil current transformer (203) is equidistantly fixed in the first protective sleeve (201) and the second protective sleeve (202) through bolts.

2. The on-line monitoring device for insulation applied to a high voltage surge arrester according to claim 1, wherein, The high-speed data acquisition module (7) and the communication module (8) are welded on one side of the circuit board (5) on the top of the central data processing module (6), and the communication module (8) is arranged on one side of the high-speed data acquisition module (7).

3. The on-line monitoring device for insulation applied to a high voltage surge arrester according to claim 1, wherein, The solar power supply assembly (3) comprises a solar photovoltaic panel (301) mounted on the top of the protective box (1) through a mounting frame, a storage box (302) is mounted on the inner top of the protective box (1) through a mounting frame, and an inverter (303) is fixed on the inner top of the protective box (1) on one side of the storage box (302) through bolts.

4. The insulation on-line monitoring device applied to the high voltage surge arrester according to claim 1, characterized in that, An antenna (4) is fixed on the top of the protective box (1) on one side of the solar photovoltaic panel (301) through bolts, and a signal output end of the communication module (8) is electrically connected with a signal input end of the antenna (4) through a signal line.

5. The on-line monitoring device for insulation applied to a high voltage surge arrester according to claim 1, wherein, A box door (9) is hingedly connected to one side of the protective box (1) through a hinge.

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