Remote online monitoring system for leakage current of high-voltage discharge insulator

Abstract

The utility model belongs to the technical field of electrical element protection, and particularly relates to a remote online monitoring system for leakage current of a high-voltage discharge insulator, which is characterized in that a leakage current acquisition ring is fixedly arranged on the insulator, and a plurality of detection bolts in one-to-one correspondence with conductive coatings are arranged on the leakage current acquisition ring; the plurality of detection bolts are connected with a leakage current acquisition device, the leakage current acquisition device transmits detected leakage current data to a Web server in a wireless transmission mode, the Web server is in wireless / wired communication with an online monitoring computer, the Web server is further in wireless communication with a 4G wireless router, and the 4G wireless router is connected with the Web server. And the 4G wireless router is in wireless communication with the high-voltage pulse discharge power supply. According to the utility model, the leakage current on the surface of the insulator can be monitored online in real time, and the pollution degree on the surface of the insulator can be judged timely, so that pollution flashover accidents of the insulator of the power transmission line can be prevented timely, economic loss is reduced, and safe operation and informatization management level of the power transmission line are improved.

Description

Technical Field

[0001] This utility model belongs to the field of electrical component protection technology, specifically relating to a remote online monitoring system for leakage current of high-voltage discharge insulators. Background Technology

[0002] Transmission lines and their related electrical equipment play a crucial role in transmitting and distributing electrical energy, and their reliability and safety directly affect the safe and stable operation of the entire power system. As the scale of the power system continues to expand, insulators, as an important component of transmission lines, directly impact the safe operation of the power grid.

[0003] Because transmission lines operate in open-air environments for extended periods, insulators exhibit a significant adsorption effect on surrounding suspended pollutants, leading to the formation of contaminants on their surfaces. In humid weather conditions such as heavy fog, rain, or snow, the electrolyte components in the contaminant layer become wet, causing a sudden change in conductivity on the insulator surface. This results in leakage current and a gradual decline in insulation performance. When insulators are subjected to overvoltage, flashover may occur. Prolonged flashover can cause line tripping or even line breakage, severely impacting the safe operation of the power system.

[0004] Traditional insulator maintenance methods primarily rely on periodic inspections and cleaning, which not only consume significant manpower, material resources, and financial resources but also fail to effectively prevent flashover accidents caused by pollution. Insulator leakage current monitoring signals can reflect the degree of pollution, allowing line maintenance personnel to promptly understand the insulator's operating status and perform cleaning or replacement when necessary to prevent flashover accidents caused by pollution. Therefore, designing a remote online monitoring system for insulator leakage current is of great significance for reducing economic losses and improving the safe operation and information-based, digital management of power lines. Utility Model Content

[0005] This invention provides a remote online monitoring system for leakage current of high-voltage discharge insulators to address the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A remote online monitoring system for leakage current of a high-voltage discharge insulator includes a high-voltage pulse discharge power supply. One end of the high-voltage pulse discharge power supply is connected to a discharge cable, and the other end of the discharge cable is wound to form a discharge coil. The discharge coil is fixed to the upper surface of the insulator. Multiple probes are evenly inserted into the discharge coil, facing the center of the insulator. A leakage current acquisition ring is fixed to the insulator. The leakage current acquisition ring is made of insulating material. Multiple conductive coatings are evenly distributed on the lower surface of the leakage current acquisition ring, with no communication between adjacent conductive coatings. Multiple detection bolts, each corresponding to a conductive coating, are installed on the leakage current acquisition ring. The detection bolts are electrically connected to their respective conductive coatings. The multiple detection bolts are connected to a leakage current acquisition device via armored shielded acquisition cables. The leakage current acquisition device transmits the detected leakage current data wirelessly to a web server. The web server communicates wirelessly / wired with an online monitoring computer and also wirelessly with a 4G wireless router. The 4G wireless router communicates wirelessly with the high-voltage pulse discharge power supply. The 4G wireless router, leakage current acquisition device, and high-voltage pulse discharge power supply are all powered by batteries.

[0008] Furthermore, there are six probes, which are evenly distributed on the discharge coil.

[0009] Furthermore, the conductive coating has six segments, which are evenly distributed on the leakage current acquisition ring.

[0010] Furthermore, multiple adjusting bolts are evenly distributed on the leakage current acquisition ring. The adjusting bolts are threadedly connected to the leakage current acquisition ring. The conductive coating on the lower surface of the leakage current acquisition ring is in contact with the upper surface of the insulator. The end of the adjusting bolt abuts against the steel cap of the insulator, thereby achieving a fixed connection between the leakage current acquisition ring and the insulator.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] This invention utilizes a remotely controlled high-voltage pulse discharge power supply combined with segmented probes to discharge insulators. A leakage current acquisition ring collects the leakage current from the insulator surface in segments. An armored shielded acquisition cable transmits the current signal to a leakage current acquisition device for processing. Finally, the leakage current acquisition device transmits the processed signal to an online monitoring computer for remote online monitoring. Operators can monitor the leakage current on the insulator surface in real time and promptly assess the degree of contamination on the insulator surface to prevent flashover accidents in transmission line insulators, reduce economic losses, and improve the safe operation and information management level of transmission lines. Furthermore, this invention achieves segmented acquisition of leakage current from the insulator surface through segmented probes and a conductive coating, enabling precise location of areas where flashover and other faults occur.

[0013] This invention has excellent anti-electromagnetic interference, rainproof, and lightning protection properties, and is suitable for long-term, stable, and reliable operation in harsh outdoor environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the installation of the discharge coil and leakage current acquisition ring of this utility model;

[0016] Figure 3 This is a bottom view of the leakage current acquisition ring of this utility model;

[0017] Figure 4 This is a schematic diagram of the leakage current acquisition device of this utility model;

[0018] In the diagram, 1 is a high-voltage pulse discharge power supply, 2 is an insulator, 3 is a leakage current acquisition device, 4 is a web server, 5 is an online monitoring computer, 6 is a 4G wireless router, 7 is a discharge coil, 8 is a probe, 9 is a leakage current acquisition ring, 10 is an adjusting bolt, 11 is a detection bolt, and 12 is a conductive coating. Detailed Implementation

[0019] To further illustrate the technical solution of this utility model, the following embodiments will be used to further explain this utility model.

[0020] like Figures 1 to 3As shown, a remote online monitoring system for leakage current of high-voltage discharge insulators includes a high-voltage pulse discharge power supply 1. This invention uses a 1kW low-frequency unipolar high-voltage pulse discharge power supply 1 to remotely discharge the insulator. Its maximum output voltage can reach 30kV and its maximum output current is 0.1A, which makes it easier to collect the leakage current of the insulator and to promptly assess the degree of contamination on the insulator surface. Furthermore, the high-voltage pulse discharge power supply 1 is small in size, lightweight, and remotely controllable, and can remotely adjust multiple parameters such as voltage, current, and power of the discharge pulse. The high-voltage pulse discharge power supply 1 is connected to one end of the discharge cable, and the other end of the discharge cable is wound to form a discharge coil 7. The discharge coil 7 is fixed to the upper surface of the insulator 2. Six probes 8 are evenly inserted into the discharge coil 7, and the probes 8 are positioned towards the center of the insulator 2. A leakage current acquisition ring 9 is fixedly installed on the insulator 2. The leakage current acquisition ring 9 is made of insulating material. Six conductive coatings 12 are evenly distributed on the lower surface of the leakage current acquisition ring 9. The conductive coatings 12 are not connected to each other. Multiple detection bolts corresponding to the conductive coatings 12 are provided on the leakage current acquisition ring 9. 11. The detection bolt 11 is electrically connected to the corresponding conductive coating 12. Multiple detection bolts 11 are respectively connected to the leakage current acquisition device 3 through armored shielded acquisition cables. The leakage current acquisition device 3 transmits the detected leakage current data to the Web server 4 wirelessly. The Web server 4 communicates wirelessly / wiredly with the online monitoring computer 5. The Web server 4 also communicates wirelessly with the 4G wireless router 6. The 4G wireless router 6 communicates wirelessly with the high-voltage pulse discharge power supply 1. The 4G wireless router 6, the leakage current acquisition device, and the high-voltage pulse discharge power supply 1 are all powered by batteries.

[0021] Multiple adjusting bolts 10 are evenly distributed on the leakage current acquisition ring 9. The adjusting bolts 10 are threadedly connected to the leakage current acquisition ring 9. The conductive coating 12 on the lower surface of the leakage current acquisition ring 9 is in contact with the upper surface of the insulator 2. The end of the adjusting bolt 10 abuts against the steel cap of the insulator, thereby realizing the fixed connection between the leakage current acquisition ring 9 and the insulator 2.

[0022] Working principle: When high-voltage discharge is required, the online monitoring computer 5 issues a discharge command. This command is transmitted via network communication between the online monitoring computer 5 and the Web server 4, 4G communication between the Web server 4 and the 4G wireless router 6, and 2.4G WiFi wireless communication between the 4G wireless router 6 and the high-voltage pulse discharge power supply 1. The high-voltage pulse discharge power supply 1 then performs segmented discharge on the insulator 2 through six probes 8. Subsequently, the current is collected segmentally from the insulator 2 through six conductive coatings 12, and the signal is transmitted to the leakage current acquisition device 3 for processing via the detection bolt 11. The leakage current acquisition device 3 has a built-in 4G network communication module, which transmits the processed signal to the Web server 4 via 4G communication. Finally, the Web server 4 transmits the signal to the online monitoring computer 5 for remote monitoring, ultimately achieving online monitoring of the contamination level on the insulator surface.

[0023] like Figure 4 As shown, the leakage current acquisition device 3 in this utility model can be referenced from utility model patent application number "201420689052.X", which includes six current sensors. The input terminals of the six current sensors are respectively connected to the detection bolts 11 via armored shielded acquisition cables. The output terminals of the current sensors are connected to the input terminals of the current / voltage conversion module, and the output terminals of the current / voltage conversion module are connected to the input terminals of the signal filtering and processing module. The output terminals of the six signal filtering and processing modules are all connected to the microprocessor MCU, and the output terminals of the microprocessor MCU are connected to the 4G network communication module. It also includes a power supply module, which supplies power to the current / voltage conversion module, the signal filtering and processing module, the microprocessor MCU, and the 4G network communication module. The power supply module is also connected to a battery.

[0024] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A remote online monitoring system for leakage current of high-voltage discharge insulators, characterized in that: The system includes a high-voltage pulse discharge power supply (1), which is connected to one end of a discharge cable. The other end of the discharge cable is wound to form a discharge coil (7). The discharge coil (7) is fixed on the upper surface of an insulator (2). Multiple probes (8) are evenly inserted into the discharge coil (7), with the probes (8) facing the center of the insulator (2). A leakage current acquisition ring (9) is fixedly installed on the insulator (2). The leakage current acquisition ring (9) is made of insulating material. Multiple conductive coatings (12) are evenly distributed on the lower surface of the leakage current acquisition ring (9). The connected conductive coatings (12) are not interconnected. Multiple probes are arranged on the leakage current acquisition ring (9) to be paired with the conductive coatings (12). The corresponding detection bolt (11) is electrically connected to the corresponding conductive coating (12). Multiple detection bolts (11) are connected to the leakage current acquisition device (3) through armored shielded acquisition cables. The leakage current acquisition device (3) transmits the detected leakage current data to the Web server (4) wirelessly. The Web server (4) communicates wirelessly / wired with the online monitoring computer (5). The Web server (4) also communicates wirelessly with the 4G wireless router (6). The 4G wireless router (6) communicates wirelessly with the high-voltage pulse discharge power supply (1). The 4G wireless router (6), the leakage current acquisition device (3), and the high-voltage pulse discharge power supply (1) are all powered by batteries.

2. The remote online monitoring system for leakage current of high-voltage discharge insulators according to claim 1, characterized in that: There are six probes (8), which are evenly distributed on the discharge coil (7).

3. The remote online monitoring system for leakage current of high-voltage discharge insulators according to claim 2, characterized in that: The conductive coating (12) has six segments, which are evenly distributed on the leakage current acquisition ring (9).

4. The remote online monitoring system for leakage current of high-voltage discharge insulators according to claim 1, characterized in that: Multiple adjusting bolts (10) are evenly distributed on the leakage current acquisition ring (9). The adjusting bolts (10) are threadedly connected to the leakage current acquisition ring (9). The conductive coating (12) on the lower surface of the leakage current acquisition ring (9) is in contact with the upper surface of the insulator (2). The end of the adjusting bolt (10) abuts against the steel cap of the insulator, thereby realizing the fixed connection between the leakage current acquisition ring (9) and the insulator (2).

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