Online detection device and method for insulation fault of dry air inflation insulation electrical equipment

Abstract

The invention discloses a dry air inflation insulation electrical equipment insulation fault on-line detection device and method, and belongs to the field of electrical equipment insulation fault detection, the device comprises a display screen, an image signal line, an alarm signal line, a nitrogen oxide electronic concentration sensor, a gas connecting pipe and dry air inflation insulation electrical equipment; the nitric oxide electronic concentration sensor is fixedly connected with the gas connecting pipe in a sealed mode, the gas connecting pipe is fixedly connected with the dry air insulation inflation power equipment in a sealed mode, and the nitric oxide electronic concentration sensor detects the concentration of nitric oxide in the dry air insulation inflation power equipment through the gas connecting pipe. The nitric oxide electronic concentration sensor is connected with the display screen through an image signal line; and the nitric oxide electronic concentration sensor is connected with the alarm device through an alarm signal line. The method has the advantages of high safety, simplicity and convenience in operation, wide application range and the like.

Description

Technical Field

[0001] The invention belongs to the field of insulation fault detection of power equipment, and in particular relates to an online insulation fault detection device and method for dry air-filled insulation power equipment. Background Art

[0002] Power equipment is an important part of the power system, and its insulation performance is directly related to the safe and stable operation of the power system. However, due to the influence of long-term operation of the equipment, environmental factors, and human factors, the insulation performance of power equipment may gradually decline, or even insulation failure may occur. Traditional insulation fault detection methods often need to be performed after the equipment is shut down, which not only affects the normal operation of the power system, but also has a long detection cycle and low efficiency. Therefore, it is particularly important to develop a method that can detect insulation faults of power equipment online. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an on-line detection device and method for insulation faults of dry air-filled insulated power equipment based on the concentration of discharge products.

[0004] The technical solution adopted by the present invention includes:

[0005] A first aspect of the present invention provides an online detection device for insulation faults of dry air-filled insulated power equipment, the device comprising:

[0006] Display screen, image signal line, alarm signal line, nitrogen oxide electronic concentration sensor, gas connection pipe and dry air insulation charging power equipment;

[0007] The electronic nitrogen oxide concentration sensor is sealed and fixedly connected to the gas connecting pipe, and the gas connecting pipe is fixedly and sealedly connected to the dry air insulated and inflatable electric equipment. The electronic nitrogen oxide concentration sensor detects the nitrogen oxide concentration in the dry air insulated and inflatable electric equipment through the gas connecting pipe; the electronic nitrogen oxide concentration sensor is connected to the display screen through an image signal line; the electronic nitrogen oxide concentration sensor is connected to the alarm device through an alarm signal line.

[0008] Optionally, the electronic nitrogen oxide concentration sensor is connected to a display screen via an image signal line, and the detected nitrogen oxide concentration is displayed on the display screen.

[0009] Optionally, the nitrogen oxide electronic concentration sensor is connected to an alarm device via an alarm signal line, and the alarm device is used to receive the nitrogen oxide concentration detected by the nitrogen oxide electronic concentration sensor in real time and send an alarm signal when the nitrogen oxide concentration exceeds a threshold value.

[0010] Optionally, the electronic nitrogen oxide concentration sensor is powered by its own power supply.

[0011] Optionally, the gas connecting pipe is in communication with the dry air in the dry air insulated and gas-filled electric power equipment, and the nitrogen oxide electronic concentration sensor obtains the nitrogen oxide concentration information in the dry air insulated and gas-filled electric power equipment by detecting the nitrogen oxide concentration in the gas connecting pipe connected thereto.

[0012] Optionally, the device is also equipped with an intelligent data analysis and early warning system, which can automatically process and analyze the collected discharge product concentration data, determine whether the insulation state of the equipment is abnormal, and issue a warning signal in a timely manner.

[0013] Optionally, the device also adopts an integrated and modular design.

[0014] The second aspect of the present invention provides an online detection method for insulation fault of dry air insulated power equipment, which is applied to the online detection device for insulation fault of dry air insulated power equipment described in the first aspect of the present invention, comprising:

[0015] Detect the nitrogen oxide concentration in the dry air insulation charging equipment, and send an alarm signal when the nitrogen oxide concentration exceeds the threshold.

[0016] The third aspect of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when loaded into the processor, implements an online detection method for insulation faults of dry air-insulated power equipment according to the second aspect of the present invention.

[0017] A fourth aspect of the present invention provides a computer-readable storage medium, which stores a computer program, characterized in that when the computer program is executed by a processor, an online detection method for insulation faults of dry air-insulated power equipment according to the second aspect of the present invention is implemented.

[0018] The beneficial effect is that the online insulation fault detection of dry air-filled insulated power equipment can be carried out at any time, which has a wide range of practical use value. It adopts non-contact detection technology to indirectly reflect the insulation status inside the equipment by monitoring the concentration of discharge products in the dry air around the power equipment. This technology avoids the disadvantages of the traditional detection method that requires direct contact with the equipment or opening the equipment casing, greatly improving the safety and convenience of detection. It has the advantages of high safety, simple operation and wide application range. Specifically, it has high safety: non-contact detection avoids safety accidents that may be caused by direct contact with the equipment; simple operation: real-time monitoring can be achieved without disassembling or shutting down the equipment; wide application range: it is suitable for dry air-filled insulated power equipment of various types and voltage levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an online detection device for insulation faults of dry air-filled insulated power equipment according to the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0021] The technical background of using dry gas as an insulating medium stems from the continuous pursuit of safety and reliability of power equipment. Although traditional insulating materials, such as oil and solid insulators, have been widely used in history, they may face problems such as performance degradation, environmental pollution and safety hazards in some cases. As the power system develops towards high voltage and high power, the requirements for insulation technology are becoming more stringent. Dry gas, especially air, has gradually received attention due to its excellent insulating properties. Dry air not only has high resistivity and low dielectric loss, which can effectively prevent current leakage and arc formation, but also has good moisture resistance and temperature adaptability, so that it can maintain stable insulation performance under various environmental conditions. In addition, the non-toxic and harmless properties of dry gas and its low cost make it an environmentally friendly and economical insulation option.

[0022] Based on environmental protection requirements, more and more power equipment is using dry air as the insulating medium.

[0023] When an insulation fault occurs inside dry air-filled insulated power equipment, nitrogen oxide decomposition products will appear in the dry air. The concentration of the nitrogen oxide decomposition products depends on the discharge energy when the insulation fault occurs and the duration of the insulation fault. The greater the discharge energy or the longer the insulation fault duration, the higher the concentration of nitrogen oxides in the dry air-filled insulated power equipment. The present invention provides an online detection device for insulation faults of dry air-filled insulated power equipment based on the concentration of discharge products, which mainly uses the concentration changes of discharge products (such as ozone, nitrogen oxides, etc.) to reflect the changes in the insulation state of the equipment. When there are insulation defects inside the power equipment, discharge phenomena will occur locally, and then discharge products will be generated. These products will diffuse into the dry air around the equipment and be detected by specific sensors.

[0024] like Figure 1 As shown, in embodiment 1, the present invention provides an online detection device for insulation fault of dry air insulated power equipment, the device comprising: a display screen 1, an image signal line 2, an alarm signal line 3, an electronic nitrogen oxide concentration sensor 4, a gas connecting pipe 5 and a dry air insulated gas-filled power equipment 6;

[0025] The electronic nitrogen oxide concentration sensor 4 is sealed and fixedly connected to the gas connecting pipe 5, and the gas connecting pipe 5 is fixedly and sealedly connected to the dry air insulated and inflated electric equipment 6. The electronic nitrogen oxide concentration sensor 4 detects the nitrogen oxide concentration in the dry air insulated and inflated electric equipment 6 through the gas connecting pipe 5; the electronic nitrogen oxide concentration sensor 4 is connected to the display screen 1 through the image signal line 2, and the detected nitrogen oxide concentration is displayed on the display screen 1; the electronic nitrogen oxide concentration sensor 4 is connected to the alarm device through the alarm signal line 3, and the alarm device is used to receive the nitrogen oxide concentration detected by the electronic nitrogen oxide concentration sensor 4 in real time, and send an alarm signal when the nitrogen oxide concentration exceeds the threshold value, so that maintenance personnel can promptly repair the dry air insulated and insulated electric equipment 6.

[0026] In a further preferred but non-limiting embodiment, the electronic nitrogen oxide concentration sensor 4 is powered by its own power supply.

[0027] In a further preferred but non-limiting embodiment, the gas connecting pipe 5 is connected to the dry air in the dry air insulated and insulated electric equipment 6, and the nitrogen oxide electronic concentration sensor 4 obtains the nitrogen oxide concentration information in the dry air insulated and insulated electric equipment 6 by detecting the nitrogen oxide concentration in the gas connecting pipe 5 connected thereto.

[0028] Preferably, the dry air-filled insulated power equipment insulation fault online detection device provided by the present invention has the following technical features:

[0029] Real-time monitoring: The device can monitor changes in the insulation status of the equipment in real time, detect potential faults in time, and improve detection efficiency and accuracy;

[0030] Non-contact detection: indirectly reflects the insulation status of the equipment by detecting the concentration of discharge products, avoiding the safety hazards caused by direct contact with the equipment;

[0031] High sensitivity: Using advanced sensor technology, it can accurately detect trace discharge products and improve the sensitivity of detection;

[0032] Wide applicability: This method is applicable to various types of dry air-filled insulated power equipment and has wide applicability.

[0033] It is worth noting that the device provided in Example 1 of the present invention adopts non-contact detection technology, which indirectly reflects the insulation status inside the equipment by monitoring the concentration of discharge products in the dry air around the power equipment. This technology avoids the disadvantages of traditional detection methods that require direct contact with the equipment or opening the equipment casing, greatly improving the safety and convenience of detection. It has the advantages of high safety, simple operation and wide application range. Specifically, it has high safety: non-contact detection avoids safety accidents that may be caused by direct contact with the equipment; simple operation: real-time monitoring can be achieved without disassembling or shutting down the equipment; wide application range: suitable for dry air-filled insulated power equipment of various types and voltage levels.

[0034] It is further preferred that highly sensitive sensors, such as ozone sensors, nitrogen oxide sensors, etc., are used in the device to accurately detect trace discharge products. These sensors have the characteristics of fast response speed, accurate measurement, and good stability, which provide a strong guarantee for the online detection of insulation faults. Specifically, high sensitivity: can timely detect tiny discharge phenomena inside the equipment and improve the accuracy of detection; fast response speed: the sensor can quickly respond to changes in discharge products and realize real-time monitoring; good stability: the sensor operates stably for a long time, reducing false alarms or missed alarms caused by sensor failures.

[0035] More preferably, the device is equipped with an intelligent data analysis and early warning system, which can automatically process and analyze the collected discharge product concentration data, determine whether the insulation state of the equipment is abnormal, and issue early warning signals in time. The system can also predict and evaluate the insulation life of the equipment based on historical data and operating experience. Specifically, the degree of intelligence is high: it realizes automatic collection, processing and analysis of data, and improves detection efficiency; early warning is timely: the system can promptly detect abnormal changes in the insulation state of the equipment and issue early warning signals, providing strong support for the timely maintenance and replacement of the equipment; accurate life prediction: through the analysis of historical data and the summary of operating experience, the system can accurately predict the insulation life of the equipment, providing a scientific basis for the maintenance and management of the equipment.

[0036] In a further preferred but non-limiting embodiment, the dry air-filled insulated power equipment insulation fault online detection device provided by the present invention also adopts an integrated and modular design, integrating the sensor, signal processing module, data analysis module, etc. in a compact housing to form a highly integrated detection device. At the same time, the device also has good scalability and maintainability, and modules can be added or replaced according to actual needs.

[0037] Small size and light weight: The integrated design makes the device small in size and light in weight, making it easy to install and carry.

[0038] Strong scalability: The modular design makes the device have good scalability, and new functional modules can be added according to actual needs.

[0039] Good maintainability: The modular design facilitates the maintenance and repair of the device, reducing maintenance costs.

[0040] In Example 2, the present invention provides an online detection method for insulation fault of dry air insulated power equipment, which is applied to an online detection device for insulation fault of dry air insulated power equipment described in Example 1, comprising:

[0041] Detect the nitrogen oxide concentration in the dry air insulation charging equipment, and send an alarm signal when the nitrogen oxide concentration exceeds the threshold.

[0042] In a further preferred but non-limiting embodiment, the method further comprises sensor selection, wherein a sensor having high sensitivity and high selectivity to discharge products is selected, such as an ozone sensor, a nitrogen oxide sensor, and the like.

[0043] In a further preferred but non-limiting embodiment, the method further includes signal processing, filtering, amplifying and other processing on the signal collected by the sensor to improve the accuracy and reliability of the signal.

[0044] In a further preferred but non-limiting embodiment, the method further includes data analysis, establishing a corresponding relationship between the concentration of discharge products and the insulation state of the equipment, processing and analyzing the collected data through a data analysis algorithm, and determining whether the insulation state of the equipment is abnormal.

[0045] Embodiment 3 of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is loaded into the processor, an online detection method for insulation faults of dry air-insulated power equipment according to Embodiment 2 is implemented.

[0046] Embodiment 4 of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the online detection method for insulation faults of dry air-insulated power equipment according to embodiment 2 is implemented.

[0047] The method of online detection of insulation fault of dry air-filled insulated power equipment based on discharge product concentration has broad application prospects. With the rapid development of the power industry and the continuous improvement of the level of intelligence, this method will play an important role in power equipment status monitoring, fault diagnosis and preventive maintenance. At the same time, this method is also expected to be combined with other monitoring technologies to form a more complete power equipment insulation fault monitoring system, providing a more powerful technical guarantee for the safe and stable operation of the power system.

[0048] In summary, the dry air-filled insulated power equipment insulation fault online detection device method based on discharge product concentration provided by the present invention is an innovative and practical technology, which is of great significance for improving the detection efficiency and accuracy of insulation faults of power equipment.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An online detection device for insulation fault of dry air-filled insulated power equipment, characterized in that: The device includes: Display screen, image signal line, alarm signal line, nitrogen oxide electronic concentration sensor, gas connection pipe and dry air insulation charging power equipment; The electronic nitrogen oxide concentration sensor is sealed and fixedly connected to the gas connecting pipe, and the gas connecting pipe is fixedly and sealedly connected to the dry air insulated and inflatable electric equipment. The electronic nitrogen oxide concentration sensor detects the nitrogen oxide concentration in the dry air insulated and inflatable electric equipment through the gas connecting pipe; the electronic nitrogen oxide concentration sensor is connected to the display screen through an image signal line; the electronic nitrogen oxide concentration sensor is connected to the alarm device through an alarm signal line.

2. The dry air-filled insulation fault online detection device for power equipment according to claim 1, characterized in that: The nitrogen oxide electronic concentration sensor is connected to a display screen via an image signal line, and the detected nitrogen oxide concentration is displayed via the display screen.

3. The dry air-filled insulation fault online detection device for power equipment according to claim 1, characterized in that: The nitrogen oxide electronic concentration sensor is connected to an alarm device via an alarm signal line. The alarm device is used to receive the nitrogen oxide concentration detected by the nitrogen oxide electronic concentration sensor in real time and send an alarm signal when the nitrogen oxide concentration exceeds a threshold value.

4. The dry air-filled insulation fault online detection device for power equipment according to claim 1, characterized in that: The nitrogen oxide electronic concentration sensor adopts a self-contained power supply.

5. The dry air-filled insulation fault online detection device for electric power equipment according to claim 1, characterized in that: The gas connecting pipe is in communication with the dry air in the dry air insulated gas-filled electric equipment, and the nitrogen oxide electronic concentration sensor obtains the nitrogen oxide concentration information in the dry air insulated electric equipment by detecting the nitrogen oxide concentration in the gas connecting pipe connected thereto.

6. The dry air-filled insulation fault online detection device for electric power equipment according to claim 1, characterized in that: The device is also equipped with an intelligent data analysis and early warning system, which can automatically process and analyze the collected discharge product concentration data, determine whether the insulation status of the equipment is abnormal, and issue early warning signals in a timely manner.

7. The dry air-filled insulation fault online detection device for electric power equipment according to claim 1, characterized in that: The device also adopts an integrated and modular design.

8. A method for online detection of insulation faults of dry air insulated power equipment, applied to an online detection device for insulation faults of dry air insulated power equipment according to any one of claims 1 to 7, comprising: Detect the nitrogen oxide concentration in the dry air insulation charging equipment, and send an alarm signal when the nitrogen oxide concentration exceeds the threshold.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the computer program is loaded into a processor, the method for online detection of insulation faults of dry air-insulated power equipment according to claim 8 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, an online detection method for insulation faults of dry air-insulated power equipment according to claim 8 is implemented.

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