A potential fault analysis system based on air-type switch cabinet

Abstract

The application discloses a potential fault analysis system based on an air type switch cabinet, which comprises a potential fault analysis system, wherein the potential fault analysis system comprises a gas enrichment unit, a comprehensive analysis unit, a secondary analysis unit, a verification feedback unit, an induction corresponding unit, a system construction unit, a prewarning scheme unit and a three-dimensional model unit; the output end of the gas enrichment unit is connected with the input end of the comprehensive analysis unit; and the application relates to the technical field of fault analysis. The potential fault analysis system based on the air type switch cabinet can timely and effectively detect fault gas, discovers faults in advance, and prevents accidents from happening. In addition, the local discharge type and the local overheating fault temperature have certain correlation with the generated derivative gas. Through detection of the type of the derivative and analysis of the content change rule, the type of the discharge and the overheating temperature can be inferred, and the insulation condition of the equipment can be effectively evaluated.

Description

Technical Field

[0001] This invention relates to the field of fault analysis technology, specifically to a potential fault analysis system based on an air-cooled switchgear. Background Technology

[0002] Switchgear is an important power distribution device in electrical circuits. It integrates disconnecting switches, circuit breakers, and related protective devices, primarily used to disconnect and close normal power lines and to transmit and switch operating loads. It can promptly and effectively disconnect lines when operating equipment and lines in the power system suddenly fail, thus ensuring the safety of critical equipment. Simultaneously, it reliably grounds equipment and lines that have been taken out of service, thereby ensuring the safety of personnel.

[0003] Existing air-cooled switchgear is prone to failure due to insulation degradation caused by long-term operation in harsh environments such as high temperature, high pressure, and humidity. Once the switchgear fails, it may not only damage other important equipment on the line, but also cause power outages. Therefore, this invention proposes a potential fault analysis system based on air-cooled switchgear. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a potential fault analysis system based on air-insulated switchgear, which solves the problem that existing air-insulated switchgear is prone to failure due to insulation degradation caused by long-term operation in harsh environments such as high temperature, high pressure, and humidity.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a potential fault analysis system based on an air-cooled switchgear, comprising a potential fault analysis system, which includes a gas enrichment unit, a comprehensive analysis unit, a secondary analysis unit, a verification feedback unit, an inductive correspondence unit, a system construction unit, an early warning scheme unit, and a three-dimensional model unit. The output of the gas enrichment unit is connected to the input of the comprehensive analysis unit. The outputs of the comprehensive analysis unit are all connected to the inputs of the secondary analysis unit and the verification feedback unit. The output of the secondary analysis unit is connected to the input of the verification feedback unit. The output of the verification feedback unit is connected to the input of the comprehensive analysis unit. The outputs of the inductive correspondence unit are all connected to the inputs of the system construction unit and the three-dimensional model unit. The output of the system construction unit is connected to the input of the early warning scheme unit.

[0008] Preferably, the gas enrichment unit utilizes characteristic gas enrichment technology to classify and enrich the main insulating materials of high-voltage switchgear, such as epoxy resin, cross-linked polyethylene, and silicone rubber, with the main characteristic gas decomposition products of air molecules, and studies the effects of temperature, pressure, gas flow rate, and adsorbent factors on the enrichment and detection of fault characteristic gases in high-voltage switchgear.

[0009] Preferably, the inductive correspondence unit will conduct research on verifying the correspondence between latent fault types and characteristic gases, summarize the distribution patterns of the main insulating materials of high-voltage switchgear, such as epoxy resin, cross-linked polyethylene, and silicone rubber, and the main characteristic gas decomposition products of air molecules under overheating and partial discharge faults, study the correspondence between fault types and characteristic gases, and verify the correspondence between latent fault types and characteristic gas theoretical research.

[0010] Preferably, the system construction unit conducts research on the establishment of an intelligent diagnostic system for latent faults in switchgear based on the analysis of characteristic gas products. Through partial discharge simulation tests and overheating fault simulation tests, the decomposition rules and main characteristic gas decomposition products of high-voltage switchgear's main insulating materials such as epoxy resin, cross-linked polyethylene, and silicone rubber with air molecules are studied under different types of partial discharge and overheating fault conditions. Combined with the results of electrical tests on the simulation platform, a system and method for gas composition analysis in switchgear fault diagnosis are formed.

[0011] Preferably, the early warning scheme unit is based on the typical application characteristics of switchgear, adopts physical and chemical detection technology, and combines the general laws of typical latent fault types and products of switchgear to propose a latent fault diagnosis and early warning system scheme for switchgear, designs hardware circuits, and develops a portable sampling-detection system or an integrated automatic sampling-detection system.

[0012] Preferably, the verification feedback unit includes a data extraction module, a data overlay module, a calculation module, a data output module, and an anomaly alert module. The output end of the data extraction module is connected to the input end of the data overlay module, the output end of the data overlay module is connected to the input end of the calculation module, and the output end of the calculation module is connected to the input ends of both the data output module and the anomaly alert module.

[0013] Preferably, the three-dimensional model unit includes a number-shape combination module, a three-dimensional display module, a red dot marking module, and a dynamic display module, wherein the output end of the number-shape combination module is connected to the input end of the three-dimensional display module.

[0014] Preferably, the output end of the 3D display module is connected to the input end of the red dot marking module, and the output end of the red dot marking module is connected to the input end of the dynamic display module.

[0015] (III) Beneficial Effects

[0016] This invention provides a potential fault analysis system based on an air-insulated switchgear. Compared with existing technologies, it has the following advantages:

[0017] (1) The potential fault analysis system based on air-type switchgear connects the output of the gas enrichment unit to the input of the comprehensive analysis unit. The output of the comprehensive analysis unit is connected to the input of the secondary analysis unit and the verification feedback unit. The output of the secondary analysis unit is connected to the input of the verification feedback unit. The output of the verification feedback unit is connected to the input of the comprehensive analysis unit. The output of the corresponding unit is connected to the input of the system construction unit and the three-dimensional model unit. The output of the system construction unit is connected to the input of the early warning scheme unit. The system can detect fault gases in a timely and effective manner, discover faults early, and prevent them from happening. In addition, the partial discharge type and the local overheating fault temperature are related to the generated derivative gases. By detecting the types of derivatives and analyzing their content change patterns, it is possible not only to infer the discharge type and overheating temperature, but also to effectively assess the insulation status of the equipment.

[0018] (2) The potential fault analysis system based on air-type switchgear, through the verification feedback unit including a data extraction module, a data overlay module, a calculation module, a data output module and an anomaly reminder module, the output end of the data extraction module is connected to the input end of the data overlay module, the output end of the data overlay module is connected to the input end of the calculation module, and the output end of the calculation module is connected to the input end of the data output module and the anomaly reminder module. The three-dimensional model unit includes a number-shape combination module, a three-dimensional display module, a red dot marking module and a dynamic display module, the output end of the number-shape combination module is connected to the input end of the three-dimensional display module, the output end of the three-dimensional display module is connected to the input end of the red dot marking module, and the output end of the red dot marking module is connected to the input end of the dynamic display module. Using the verification feedback unit, the data after the comprehensive analysis unit can be verified a second time to ensure the accuracy of the data analysis. With the set three-dimensional model unit, the three-dimensional display module and the red dot marking module can be used for three-dimensional display and key marking, so that the dynamic effect of the data can be observed intuitively. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the latent fault analysis system of the present invention;

[0020] Figure 2 This is a block diagram illustrating the principle of the verification feedback unit of the present invention.

[0021] Figure 3 This is the logic diagram of the verification feedback unit of the present invention;

[0022] Figure 4 This is a schematic diagram of the principle of the three-dimensional model unit of the present invention.

[0023] In the diagram, 1-Gas enrichment unit, 2-Comprehensive analysis unit, 3-Secondary analysis unit, 4-Verification feedback unit, 41-Data extraction module, 42-Data overlay module, 43-Calculation module, 44-Data output module, 45-Anomaly alert module, 5-Inductive correspondence unit, 6-System construction unit, 7-Early warning scheme unit, 8-3D model unit, 81-Digital-graphical combination module, 82-3D display module, 83-Red dot marking module, and 84-Dynamic display module. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-4 This invention provides a technical solution: a potential fault analysis system based on an air-cooled switchgear, comprising a gas enrichment unit 1, a comprehensive analysis unit 2, a secondary analysis unit 3, a verification feedback unit 4, an inductive correspondence unit 5, a system construction unit 6, an early warning scheme unit 7, and a three-dimensional model unit 8. The output of the gas enrichment unit 1 is connected to the input of the comprehensive analysis unit 2. The outputs of the comprehensive analysis unit 2 are all connected to the inputs of the secondary analysis unit 3 and the verification feedback unit 4. The output of the secondary analysis unit 3 is connected to the input of the verification feedback unit 4. The output of the verification feedback unit 4 is connected to the input of the comprehensive analysis unit 2. The outputs of the inductive correspondence unit 5 are all connected to the inputs of the system construction unit 6 and the three-dimensional model unit 8. The output of the system construction unit 6 is connected to the input of the early warning scheme unit 7.

[0026] In this embodiment of the invention, the gas enrichment unit 1 utilizes characteristic gas enrichment technology to classify and enrich the main insulating materials of high-voltage switchgear, such as epoxy resin, cross-linked polyethylene, and silicone rubber, with the main characteristic gas decomposition products of air molecules, and studies the effects of temperature, pressure, gas flow rate, and adsorbent factors on the enrichment and detection of fault characteristic gases in high-voltage switchgear.

[0027] In this embodiment of the invention, the corresponding unit 5 conducts research on the correspondence between latent fault types and characteristic gases, summarizes the distribution patterns of the main insulating materials of high-voltage switchgear, such as epoxy resin, cross-linked polyethylene, and silicone rubber, and the main characteristic gas decomposition products of air molecules under overheating and partial discharge faults, studies the correspondence between fault types and characteristic gases, and verifies the correspondence between latent fault types and the theoretical research on characteristic gases.

[0028] In this embodiment of the invention, system construction unit 6 conducts research on the establishment of an intelligent diagnostic system for latent faults in switchgear based on characteristic gas product analysis. Through partial discharge simulation experiments and overheating fault simulation experiments, the decomposition rules and main characteristic gas decomposition products of high-voltage switchgear's main insulating materials such as epoxy resin, cross-linked polyethylene, and silicone rubber with air molecules are studied under different types of partial discharge and overheating fault conditions. Combined with the results of electrical tests on the simulation platform, a system and method for gas composition analysis in switchgear fault diagnosis are formed.

[0029] In this embodiment of the invention, the early warning scheme unit 7, based on the typical application characteristics of switchgear, adopts physical and chemical detection technology, and combines the general laws of typical latent fault types and products of switchgear to propose a latent fault diagnosis and early warning system scheme for switchgear, designs hardware circuits, and develops a portable sampling-detection system or an integrated automatic sampling-detection system.

[0030] In this embodiment of the invention, the verification feedback unit 4 includes a data extraction module 41, a data overlay module 42, a calculation module 43, a data output module 44, and an anomaly alert module 45. The output end of the data extraction module 41 is connected to the input end of the data overlay module 42, and the output end of the data overlay module 42 is connected to the input end of the calculation module 43. The output ends of the calculation module 43 are connected to the input ends of the data output module 44 and the anomaly alert module 45. The data extraction module 41 extracts data from the comprehensive analysis unit 2, and the data overlay module 42 overlays the data from the secondary analysis unit 3 with the data from the comprehensive analysis unit 2. Then, the calculation module 43 calculates the overlap rate of the two data. If the overlap rate is not 100%, the anomaly alert module 45 performs an anomaly trapezoidal calculation. If the overlap rate is 100%, the data output module 44 outputs the data.

[0031] In this embodiment of the invention, the three-dimensional model unit 8 includes a number-shape combination module 81, a three-dimensional display module 82, a red dot marking module 83, and a dynamic display module 84. The output end of the number-shape combination module 81 is connected to the input end of the three-dimensional display module 82, the output end of the three-dimensional display module 82 is connected to the input end of the red dot marking module 83, and the output end of the red dot marking module 83 is connected to the input end of the dynamic display module 84. The number-shape combination module 81 combines data and graphics, which are then converted into three-dimensional data by the three-dimensional display module 82. At the same time, the red dot marking module 83 marks key points with red dots, and the dynamic display module 84 performs dynamic display.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A latent fault analysis system based on an air-insulated switchgear, comprising a latent fault analysis system, characterized in that: The potential fault analysis system includes a gas enrichment unit (1), a comprehensive analysis unit (2), a secondary analysis unit (3), a verification feedback unit (4), an inductive correspondence unit (5), a system construction unit (6), an early warning scheme unit (7), and a three-dimensional model unit (8). The output of the gas enrichment unit (1) is connected to the input of the comprehensive analysis unit (2). The output of the comprehensive analysis unit (2) is connected to the input of the secondary analysis unit (3) and the verification feedback unit (4). The output of the secondary analysis unit (3) is connected to the input of the verification feedback unit (4). The output of the verification feedback unit (4) is connected to the input of the comprehensive analysis unit (2). The output of the inductive correspondence unit (5) is connected to the input of the system construction unit (6) and the three-dimensional model unit (8). The output of the system construction unit (6) is connected to the input of the early warning scheme unit (7). The verification feedback unit (4) includes a data extraction module (41), a data overlay module (42), a calculation module (43), a data output module (44), and an anomaly alert module (45). The output end of the data extraction module (41) is connected to the input end of the data overlay module (42), the output end of the data overlay module (42) is connected to the input end of the calculation module (43), and the output end of the calculation module (43) is connected to the input ends of the data output module (44) and the anomaly alert module (45). The inductive correspondence unit (5) will conduct research on the correspondence between latent fault types and characteristic gases, summarize the distribution law of the characteristic gas decomposition products of high voltage switchgear insulating materials epoxy resin, cross-linked polyethylene, and organosilicon rubber polymer composite materials and air molecules under overheating and partial discharge faults, study the correspondence between fault types and characteristic gases, verify the correspondence between latent fault types and characteristic gases in theoretical research, use the data extraction module (41) to extract the data in the comprehensive analysis unit (2), and the data superposition module (42) superimposes the data in the secondary analysis unit (3) with the data in the comprehensive analysis unit (2), and then the calculation module (43) calculates the overlap rate of the two data. If the overlap rate is not 100%, the abnormal reminder module (45) will issue an abnormal reminder. If the overlap rate is 100%, the data output module (44) will output the data.

2. The potential fault analysis system based on an air-insulated switchgear according to claim 1, characterized in that: The gas enrichment unit (1) uses characteristic gas enrichment technology to classify and enrich the characteristic gas decomposition products of the high voltage switchgear insulating materials epoxy resin, cross-linked polyethylene, and organosilicon rubber polymer composite materials with air molecules, and studies the influence of temperature, pressure, gas flow rate and adsorbent factors on the enrichment and detection of fault characteristic gases in high voltage switchgear.

3. The potential fault analysis system based on an air-insulated switchgear according to claim 1, characterized in that: The system construction unit (6) is to carry out research on the establishment of an intelligent diagnostic system for latent faults of switchgear based on the analysis of characteristic gas products. Through partial discharge simulation test and overheating fault simulation test, the decomposition law and characteristic gas decomposition products of epoxy resin, cross-linked polyethylene, and organosilicon rubber polymer composite materials of high voltage switchgear insulation materials and air molecules are studied under different types of partial discharge and overheating fault conditions. Combined with the results of electrical test on the simulation platform, a system and method for gas composition analysis for switchgear fault diagnosis are formed.

4. The potential fault analysis system based on an air-insulated switchgear according to claim 1, characterized in that: The early warning scheme unit (7) is based on the typical application characteristics of switchgear, adopts physical and chemical detection technology, and combines the distribution law of typical latent fault types and products of switchgear to propose a latent fault diagnosis and early warning system scheme for switchgear, designs hardware circuits, and develops a portable sampling-detection system or an integrated automatic sampling-detection system.

5. The potential fault analysis system based on an air-insulated switchgear according to claim 1, characterized in that: The three-dimensional model unit (8) includes a number-shape combination module (81), a three-dimensional display module (82), a red dot marking module (83), and a dynamic display module (84). The output end of the number-shape combination module (81) is connected to the input end of the three-dimensional display module (82).

6. The potential fault analysis system based on an air-cooled switchgear according to claim 5, characterized in that: The output of the three-dimensional display module (82) is connected to the input of the red dot marking module (83), and the output of the red dot marking module (83) is connected to the input of the dynamic display module (84).

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