Method and apparatus for detecting decomposition gases of insulating materials in a substation room

Abstract

The application discloses a kind of insulating material decomposition gas detection method and device in power distribution station room.Therein, the method comprises: collecting the initial gas generated by the insulating material decomposition in the target power distribution station room in multiple positions respectively corresponding;Filtering initial gas, to obtain filtered gas;Based on electrochemical gas sensor, the concentration corresponding to the first gas in filtered gas is detected, to obtain multiple positions respectively corresponding first detection result;Based on ultraviolet light sensor, the concentration corresponding to the second gas in filtered gas is detected, to obtain multiple positions respectively corresponding second detection result;Multiple positions respectively corresponding first detection result and second detection result are stored to the preset database and displayed to the preset display screen.The application solves the technical problem that the accuracy of subsequent defect detection is relatively low due to the difficulty of single sensor in simultaneously and accurately detecting multiple characteristic gases caused by the decomposition of insulating materials in power distribution station room.

Description

Technical Field

[0001] This invention relates to the field of power system monitoring technology, and more specifically, to a method and apparatus for detecting the decomposition gases of insulating materials in a power distribution substation. Background Technology

[0002] In current power systems, switchgear, ring main units, and dry-type transformers play a crucial role, and their health directly affects the stable operation of the distribution network and the quality of power supply to users. However, current research focuses on the characteristic gas (NOx) generated by partial discharge or overheating defects inside switchgear / ring main units. x CO, O3, CHO x The detection of the components and content of gases is difficult because there are many other types of gases produced by the decomposition of insulating materials in the substation room. A single sensor cannot accurately detect multiple characteristic gases at the same time, which affects subsequent defect detection.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a method and apparatus for detecting decomposition gases of insulating materials in a power distribution station room, which at least solves the technical problem that the decomposition of insulating materials in a power distribution station room produces many other types of gases, and a single sensor is unable to accurately detect multiple characteristic gases at the same time, resulting in low accuracy of subsequent defect detection.

[0005] According to one aspect of the present invention, a method for detecting decomposition gases of insulating materials in a substation room is provided, comprising: collecting initial gases generated by the decomposition of insulating materials at multiple locations in a target substation room; filtering the initial gases at multiple locations to obtain filtered gases at multiple locations; detecting the concentration of a first gas in the filtered gases at multiple locations based on an electrochemical gas sensor to obtain a first detection result at multiple locations, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; detecting the concentration of a second gas in the filtered gases at multiple locations based on an ultraviolet photometric sensor to obtain a second detection result at multiple locations, wherein the second gas includes ozone; and storing the first and second detection results at multiple locations in a preset database and displaying them on a preset display screen.

[0006] Optionally, obtaining first detection results corresponding to multiple locations and second detection results corresponding to multiple locations includes: detecting the ambient temperature in the target substation room; determining a target compensation coefficient corresponding to the ambient temperature based on a preset correspondence between temperature and gas concentration compensation coefficients; using the target compensation coefficient to compensate for the concentration of the first gas in the filtered gas corresponding to multiple locations to obtain the first detection results corresponding to multiple locations; and using the target compensation coefficient to compensate for the concentration of the second gas in the filtered gas corresponding to multiple locations to obtain the second detection results corresponding to multiple locations.

[0007] Optionally, a target compensation coefficient is used to compensate for the concentration of the second gas in the filtered gas at each of the multiple locations to obtain the second detection result at each of the multiple locations. This includes: compensating for the concentration of the second gas in the filtered gas at each of the multiple locations based on a preset formula and the target compensation coefficient to obtain the second detection result at each of the multiple locations. The preset formula is as follows: ,in, This is the second test result. This refers to the optical path length of the absorption cell in the ultraviolet photometric sensor. The target compensation coefficient, This represents the ozone absorption coefficient in the ultraviolet photometric sensor. The light intensity of the filtered gas as it passes through the absorption cell is measured. The light intensity detected when zero air passes through the absorption cell. For ambient temperature, The standard temperature corresponding to zero air.

[0008] Optionally, a standard gas is collected; at multiple sample temperatures, the standard gas is detected using an electrochemical gas sensor and an ultraviolet photometric sensor to obtain the detection results corresponding to each of the multiple sample temperatures; based on the multiple sample temperatures and the detection results corresponding to each of the multiple sample temperatures, the correspondence between temperature and gas concentration compensation coefficient is determined.

[0009] Optionally, historical detection results and the corresponding detection times are obtained, wherein the historical detection results include a first historical detection result and a second historical detection result; based on the historical detection results, the first detection result and the second detection result, the gas concentration change trend in the target substation is determined; based on the detection time and the gas concentration change trend, abnormal detection results in the target substation are determined; and the abnormal detection results are displayed on a preset display screen.

[0010] Optionally, based on a preset gas concentration warning threshold, the system determines whether there are any abnormal locations among the multiple locations according to the first and second detection results corresponding to each location; if there are abnormal locations among the multiple locations, a warning prompt is generated based on the abnormal location and the first and second detection results corresponding to the abnormal location; and the warning prompt is displayed on a preset display screen.

[0011] According to another aspect of the present invention, a gas detection device for the decomposition of insulating materials in a power distribution station room is also provided, comprising: an air inlet for collecting initial gases generated by the decomposition of insulating materials at multiple locations in the target power distribution station room; a water vapor and dust filter for filtering the initial gases at multiple locations to obtain filtered gases at multiple locations; an electrochemical gas sensor for detecting the concentration of a first gas in the filtered gases at multiple locations to obtain a first detection result at multiple locations, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; an ultraviolet photometric sensor for detecting the concentration of a second gas in the filtered gases at multiple locations to obtain a second detection result at multiple locations, wherein the second gas includes ozone; a display screen for displaying the first and second detection results at multiple locations; and a microprocessor unit for storing the first and second detection results at multiple locations into a preset database.

[0012] Optionally, the above-mentioned device further includes a temperature compensation circuit, wherein the temperature compensation circuit is used to adjust the gas signals detected by the electrochemical gas sensor and the ultraviolet photometric sensor.

[0013] Optionally, the above device further includes an alarm unit, wherein the alarm unit includes a sound player and an LED light, wherein the sound player is used to play an alarm sound when an abnormality is detected in the target substation room, and the LED light is used to illuminate to remind when an abnormality is detected in the target substation room.

[0014] According to another aspect of the present invention, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored program, wherein, when the program is running, the device where the non-volatile storage medium is located is controlled to execute any of the above-described methods for detecting the decomposition gas of insulating materials in a power distribution room.

[0015] According to another aspect of the present invention, a computer device is also provided, the computer device including a processor for running a program, wherein the program executes any of the above-described methods for detecting decomposition gases of insulating materials in a power distribution room.

[0016] According to another aspect of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements any of the above-described methods for detecting decomposition gases of insulating materials in a power distribution room.

[0017] In this embodiment of the invention, a method for detecting gases generated by the decomposition of insulating materials in a power distribution station is adopted. This involves collecting initial gases generated by the decomposition of insulating materials at multiple locations within the target power distribution station; filtering these initial gases to obtain filtered gases at each location; detecting the concentration of a first gas in the filtered gases at each location using an electrochemical gas sensor to obtain a first detection result for each location, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; detecting the concentration of a second gas in the filtered gases at each location using an ultraviolet photometric sensor to obtain a second detection result for each location, wherein the second gas includes ozone; and storing the first and second detection results at each location in a preset database and displaying them on a preset display screen. This achieves the purpose of targeted gas concentration detection, thereby improving the accuracy of gas detection and solving the technical problem that the decomposition of insulating materials in a power distribution station generates many other types of gases, making it difficult for a single sensor to accurately detect multiple characteristic gases simultaneously, leading to low accuracy in subsequent defect detection. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 A hardware block diagram of a computer terminal for implementing a method for detecting decomposition gases from insulating materials in a substation room is shown.

[0020] Figure 2 This is a schematic flowchart of a method for detecting decomposition gases of insulating materials in a power distribution room according to an embodiment of the present invention.

[0021] Figure 3 This is a structural block diagram of an insulating material decomposition gas detection device in a power distribution room according to an embodiment of the present invention;

[0022] Figure 4 This is a structural block diagram of an insulating material decomposition gas detection device in a substation room provided by an optional embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] According to an embodiment of the present invention, a method embodiment for detecting decomposition gases of insulating materials in a power distribution station room is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0026] The method embodiment provided in Embodiment 1 of this application can be executed on a mobile terminal, computer terminal, or similar computing device. Figure 1 A hardware block diagram of a computer terminal for implementing a method for detecting the decomposition gases of insulating materials in a substation room is shown. Figure 1 As shown, the computer terminal 10 may include one or more processors (shown as 102a, 102b, ..., 102n in the figure) (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of a BUS bus), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer terminal 10 may also include... Figure 1The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0027] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be embodied, in whole or in part, in software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuits may be a single, independent processing module, or may be integrated, in whole or in part, into any other element within the computer terminal 10. As involved in the embodiments of this application, the data processing circuits serve as a processor control mechanism (e.g., selection of a variable resistor termination path connected to an interface).

[0028] The memory 104 can be used to store software programs and modules for application software, such as the program instructions / data storage device corresponding to the method for detecting the decomposition gas of insulating materials in a substation room in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby realizing the aforementioned application program for detecting the decomposition gas of insulating materials in a substation room. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0029] The display can be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer terminal 10.

[0030] Figure 2 This is a flowchart illustrating a method for detecting decomposition gases from insulating materials in a substation room according to an embodiment of the present invention. Figure 2 As shown, the method includes the following steps:

[0031] Step S202: Collect the initial gas generated by the decomposition of the insulation material at multiple locations in the target substation room.

[0032] In this step, collecting the initial gas generated by the decomposition of insulation materials in the target substation is a crucial component of condition monitoring, aiming to identify potential partial discharges or overheating phenomena within the switchgear / ring mains cabinet at an early stage. These phenomena often lead to the decomposition of insulation materials, releasing specific gases such as NO. x (Nitrogen oxides), CO (carbon monoxide), O3 (ozone), and CHO x(Contains hydrocarbon compounds). By detecting the type and concentration of these gases, the health status of the equipment can be assessed, malfunctions can be predicted, and preventative maintenance measures can be taken.

[0033] Optionally, a highly sensitive and accurate gas detection device can be used, capable of simultaneously detecting the four gases mentioned above. The device may include an electrochemical gas sensor to detect NO. x And CO, as well as ultraviolet photometric sensors to detect O3 and CHO x Gases. These sensors should be located in a sealed detection chamber and be able to monitor and quantify gas concentrations in real time.

[0034] Step S204: Filter the initial gas corresponding to each of the multiple locations to obtain the filtered gas corresponding to each of the multiple locations.

[0035] In this step, within the substation room, the gases produced by the decomposition of insulating materials may contain moisture and various particles (such as dust, oil mist, etc.). These impurities not only interfere with the accuracy of gas detection but may also damage the sensors and equipment in the gas detection device. Therefore, filtering the initial collected gas to obtain pure gas containing only the characteristic gas components is a necessary step to ensure detection accuracy and extend the service life of the equipment.

[0036] Optionally, for gas detection needs in substation switchgear / ring mains cabinets, the filtration system typically includes two main parts: a water vapor filter and a particulate filter, integrated within the gas detection device to ensure effective purification of the gas before it enters the sensor. The water vapor filter removes moisture from the gas, preventing corrosion and impact on the electrochemical sensor, and also preventing a decrease in the transmittance of optical sensors (such as UV photometric sensors). The water vapor filter can use hygroscopic materials such as molecular sieves, silica gel, or activated carbon. The particulate filter captures solid particles in the gas, protecting the sensor from wear or clogging. Common particulate filters include HEPA filters, activated carbon filter layers, or precision filters.

[0037] Filtering can be performed based on the following steps:

[0038] a. Pretreatment of sampled gas: In the pump-suction gas path of the gas detection device, the collected gas is first sent to a pretreatment unit. This unit may include one or more filters, depending on the characteristics of the gas being detected and the cleanliness of the surrounding environment.

[0039] b. Water vapor filtration: The initial collected gas first enters a water vapor filter. Water vapor comes into contact with the water-absorbing material in the filter and is absorbed or adsorbed, thus being removed from the gas. After passing through the water vapor filter, the moisture content in the gas is greatly reduced, resulting in relatively dry gas.

[0040] c. Particulate Filtration: The dried gas continues to pass through a particulate filter. Solid particles in the gas are captured by the filter, maintaining the gas's purity. After passing through the particulate filter, a dry and impurity-free gas is obtained, which is then transmitted to a sensor for detection.

[0041] Step S206: Based on the electrochemical gas sensor, the concentration of the first gas in the filtered gas at multiple locations is detected to obtain the first detection result at each location. The first gas includes carbon monoxide, nitric oxide and nitrogen dioxide.

[0042] In this step, the electrochemical gas sensor detects gas concentration based on the principle of electrochemical reaction. For gases such as carbon monoxide (CO), nitric oxide (NO), and nitrogen dioxide (NO2), the electrochemical reaction inside the sensor generates a current or voltage signal proportional to the gas concentration. Typically, an electrochemical sensor includes a working electrode, a reference electrode, and a counter electrode. The gas undergoes an electrochemical reaction at the working electrode, the reference electrode maintains the potential of the working electrode, and the counter electrode forms a circuit with the working electrode, generating a current signal. Using a detection system based on an electrochemical gas sensor, the concentration of the first gas (such as CO, NO, or NO2) in the filtered gas can be effectively measured, thereby obtaining the first detection results corresponding to multiple locations. This provides a strong basis for early identification and diagnosis of potential faults in substation switchgear, helping maintenance personnel to take preventative maintenance measures and ensure the safe operation of the power system.

[0043] Step S208: Based on the ultraviolet photometric sensor, the concentration of the second gas in the filtered gas at multiple locations is detected to obtain the second detection results at multiple locations, wherein the second gas includes ozone.

[0044] In this step, the ozone (O3) concentration in the filtered gas at multiple locations is detected. The core purpose is to identify and diagnose partial discharge or overheating defects in electrical equipment, especially switchgear / ring mains cabinets and other electrical equipment in substations, at an early stage. As one of the products of the decomposition of insulating materials during partial discharge or overheating events, an abnormal increase in ozone concentration can serve as an early warning signal for the health status of the equipment.

[0045] Optionally, the principle of using an ultraviolet (UV) photometric sensor to detect ozone concentration is based on the strong absorption characteristics of ozone for specific wavelengths of ultraviolet light, especially ultraviolet light with a wavelength of 253.7 nanometers. When light passes through a gas chamber containing ozone, the ozone absorbs some of the ultraviolet light, causing a decrease in light intensity. By measuring the change in light intensity before and after passing through the gas chamber, the ozone concentration can be calculated using Lambert-Beer's law. Using a UV photometric sensor to detect the ozone concentration in the filtered gas, secondary detection results, i.e., ozone concentrations, can be obtained at multiple locations. This method can effectively monitor the operating status of indoor equipment in power distribution stations, especially partial discharge and overheating defects, providing important information for preventive maintenance and fault diagnosis of power equipment.

[0046] Step S210: Store the first detection result and the second detection result corresponding to each of the multiple locations into a preset database and display them on a preset display screen.

[0047] In this step, storing the first and second detection results corresponding to multiple locations into a preset database and displaying them on a preset display screen is a crucial part of building an intelligent power equipment monitoring and management system. It not only enhances the ability to detect and diagnose equipment faults but also strengthens safety early warning mechanisms and optimizes power equipment maintenance and operation strategies. This has significant value in ensuring the stable operation of the power system, protecting personnel safety, and meeting compliance requirements.

[0048] Optionally, the microprocessor in the gas detection device reads gas concentration data from the electrochemical sensor and the ultraviolet photometric sensor, namely the first detection result (such as the concentration of CO, NO, and NO2) and the second detection result (the concentration of ozone O3). It processes this data, formatting it into a database-acceptable format, which may include, but is not limited to, timestamps, location identifiers, gas types, and concentrations. The processed data is then packaged into a data packet for uploading to a preset database or host computer via a data transmission interface. The gas detection device establishes a data transmission connection with the preset database or host computer via a USB interface or wireless transmission module, uploading the packaged data packet to the database. The data packet contains the first and second detection results for each detection location. Upon receiving the data packet, the preset database stores the data in the corresponding record, ensuring the integrity and traceability of each detection data point. The preset display screen should be designed with an intuitive user interface, capable of simultaneously or alternately displaying the first and second detection results from multiple locations. The gas detection results stored in the database should be displayed on the screen in the form of charts, numbers, or alarm indicators, facilitating quick identification of key information by the user. The screen should support real-time display of the latest detection results and also show historical data trends to help users analyze changes in gas concentration over time.

[0049] Through the above steps, the purpose of targeted gas concentration detection can be achieved, thereby improving the technical effect of gas detection accuracy. This solves the technical problem that the decomposition of insulation materials in the substation room produces many other types of gases, and a single sensor cannot accurately detect multiple characteristic gases at the same time, resulting in low accuracy of subsequent defect detection.

[0050] As an optional embodiment, obtaining first detection results corresponding to multiple locations and second detection results corresponding to multiple locations includes: detecting the ambient temperature in the target substation room; determining a target compensation coefficient corresponding to the ambient temperature based on a preset correspondence between temperature and gas concentration compensation coefficients; compensating for the concentration of the first gas in the filtered gas corresponding to each of the multiple locations using the target compensation coefficient to obtain the first detection results corresponding to each of the multiple locations; and compensating for the concentration of the second gas in the filtered gas corresponding to each of the multiple locations using the target compensation coefficient to obtain the second detection results corresponding to each of the multiple locations.

[0051] Optionally, the physical and chemical properties of gases change with temperature, especially at extreme temperatures, where the output of gas sensors may deviate from the true concentration. By detecting the ambient temperature and applying an appropriate compensation coefficient, the accuracy of gas concentration detection can be significantly improved, ensuring reliable data in any temperature environment. This process involves detecting the ambient temperature in the target substation room and determining a target compensation coefficient based on a preset relationship between temperature and gas concentration compensation coefficients. This coefficient is then used to compensate for the concentrations of the first and second gases in the filtered gas, ultimately yielding a gas detection result that accurately reflects the actual situation. The core objective of this series of operations is to improve the accuracy and reliability of gas detection, support effective fault diagnosis and preventative maintenance decisions, and ensure the safe operation of equipment.

[0052] Specifically, using built-in or external high-precision temperature sensors, the ambient temperature of the substation room is measured in real time. This ensures that the sensors can adapt to the extreme temperature range of the substation room, from -40℃ to +70℃. The temperature sensors should have good stability and be able to provide accurate readings over a wide temperature range.

[0053] A compensation coefficient table is established beforehand, through experiments or theoretical calculations, between the measured and actual concentrations of the first gas (e.g., CO, NO, NO2) and the second gas (e.g., O3) at different temperatures. This table takes into account the changes in the physicochemical properties of the gases with temperature. Based on the real-time temperature value provided by the ambient temperature sensor, the compensation coefficient corresponding to the current ambient temperature is retrieved from the temperature-compensation coefficient database. This compensation coefficient will serve as the basis for subsequent concentration compensation.

[0054] First gas concentration compensation: Collect and store the original concentration data of the first gas in the filtered gas at each location, and apply the target compensation coefficient to compensate the original concentration data to eliminate the error of temperature change in gas concentration measurement.

[0055] Second gas concentration compensation: Collect and store the raw concentration data of the second gas in the filtered gas at each location, and use a target compensation coefficient to compensate for the concentration of the second gas, correcting the effects of temperature changes. This process is similar to the compensation for the first gas, but may need to consider the special behavior of the second gas, such as ozone, under temperature influence. The compensated concentration data is the second detection result for each of the multiple locations.

[0056] By real-time monitoring of the ambient temperature in the substation and combining it with a pre-set temperature-compensation coefficient database, temperature compensation is applied to the concentrations of the first and second gases in the filtered gas, resulting in more accurate detection results. This process not only improves the accuracy of gas detection but also provides a scientific basis for fault diagnosis and preventive maintenance of power equipment through effective integration and display with the pre-set database.

[0057] As an optional embodiment, a target compensation coefficient is used to compensate for the concentration of the second gas in the filtered gas at each of multiple locations to obtain the second detection result at each of the multiple locations. This includes: compensating for the concentration of the second gas in the filtered gas at each of the multiple locations based on a preset formula and the target compensation coefficient to obtain the second detection result at each of the multiple locations. The preset formula is as follows: ,in, This is the second test result. This refers to the optical path length of the absorption cell in the ultraviolet photometric sensor. The target compensation coefficient, This represents the ozone absorption coefficient in the ultraviolet photometric sensor. The light intensity of the filtered gas as it passes through the absorption cell is measured. The light intensity detected when zero air passes through the absorption cell. For ambient temperature, The standard temperature corresponding to zero air.

[0058] Optionally, in gas detection, ambient temperature is a significant factor affecting gas sensor readings. Temperature changes influence the physicochemical properties of gases, such as the velocity of gas molecules and pressure, thus indirectly affecting the sensor's sensitivity and response. By applying a pre-defined compensation formula, the impact of temperature changes on the detection results of a secondary gas (such as ozone O3) can be eliminated or significantly reduced, improving data accuracy. Even for gases of the same concentration, the sensor's output signal will differ under different temperature conditions. By introducing a target compensation coefficient for correction, the comparability of gas concentration results measured at different temperatures can be ensured, facilitating trend analysis of historical data and comparisons between multiple locations.

[0059] Specifically, for ultraviolet light sensors, compensation can be performed based on the following formula:

[0060] ,

[0061] in, This is the second test result. This refers to the optical path length of the absorption cell in the ultraviolet photometric sensor. The target compensation coefficient, This represents the ozone absorption coefficient in the ultraviolet photometric sensor. The light intensity of the filtered gas as it passes through the absorption cell is measured. The light intensity detected when zero air passes through the absorption cell. For ambient temperature, The standard temperature corresponding to zero air.

[0062] As an optional embodiment, a standard gas is collected; at multiple sample temperatures, the standard gas is detected using an electrochemical gas sensor and an ultraviolet photometric sensor to obtain the detection results corresponding to each of the multiple sample temperatures; based on the multiple sample temperatures and the detection results corresponding to each of the multiple sample temperatures, the correspondence between temperature and gas concentration compensation coefficient is determined.

[0063] Optionally, the gas concentration values ​​output by gas detection equipment may shift due to temperature variations under different ambient temperatures. By detecting standard gases of known concentrations at a series of standard temperatures and comparing the results with theoretical values, the extent to which temperature affects the sensor output can be determined. This allows for the calculation of a compensation coefficient to offset or reduce measurement errors caused by temperature variations, thereby improving the accuracy of the detection results. The correspondence between temperature and the gas concentration compensation coefficient constitutes a correction mechanism that automatically corrects the sensor output based on the real-time ambient temperature. This mechanism is crucial for ensuring the reliability of power equipment condition monitoring because it provides consistent detection performance under various temperature conditions, avoiding false alarms or missed alarms caused by temperature fluctuations.

[0064] Specifically, all detection results obtained from electrochemical gas sensors and ultraviolet photometric sensors at various sample temperatures were collected, including the measured concentration of the target gas. The measured concentration of each gas at different temperatures was compared with the theoretical concentration on the standard gas certificate. The deviation between the measured concentration and the theoretical concentration was calculated to determine the degree of influence of different temperatures on the gas sensor output. Based on the deviation analysis, a temperature compensation model was established for each gas. The model can be a simple linear regression or a more complex polynomial fitting, depending on the influence of temperature on the sensor response. A temperature-compensation coefficient curve was derived from the model, which represents the compensation coefficient required to correct the measured concentration to the theoretical concentration at a given temperature. Several temperature points were selected for repeated detection, and the determined compensation coefficient was used for correction to verify whether the corrected measured concentration was close to the theoretical concentration of the standard gas, thus ensuring the accuracy and effectiveness of the compensation coefficient. A detailed compensation coefficient table was compiled to show the correspondence between temperature and the corresponding compensation coefficient. This table will serve as the basis for temperature compensation when the device is used in the field. Furthermore, the coefficient table should be continuously updated and improved with subsequent experiments and experience accumulation to adapt to different environmental conditions and the effects of equipment aging. By following the steps described above, the deviations in target gas detection caused by the electrochemical gas sensor and the ultraviolet photometric sensor at different temperatures can be precisely determined, and compensation coefficients applicable to different temperatures can be calculated accordingly. The application of these compensation coefficients will significantly improve the accuracy and reliability of on-site gas detection results, especially in environments with large temperature variations.

[0065] As an optional embodiment, historical detection results and the corresponding detection times are obtained, wherein the historical detection results include a first historical detection result and a second historical detection result; based on the historical detection results, the first detection result and the second detection result, the gas concentration change trend in the target substation room is determined; based on the detection time and the gas concentration change trend, abnormal detection results in the target substation room are determined; and the abnormal detection results are displayed on a preset display screen.

[0066] Optionally, by monitoring and analyzing the trend of gas concentration changes over time, sudden increases or decreases in abnormal gas concentrations can be detected in a timely manner. Such anomalies often indicate potential faults within power equipment, such as partial discharge or overheating. Displaying the anomaly detection results on a preset display screen can immediately attract the attention of operation and maintenance personnel, providing an information basis for early warning and timely handling of faults. Continuous monitoring of gas concentration change trends helps assess the health status and performance trends of power distribution equipment. Based on the understanding of gas concentration change trends and the analysis of anomaly detection results, more effective preventive maintenance can be implemented, reducing economic losses caused by unplanned downtime and faults, extending equipment lifespan, and improving the overall operating efficiency of the power system.

[0067] Specifically, all historical detection results for the target substation are retrieved from a pre-established database to ensure data integrity and continuity. The database should include, but is not limited to, first historical detection results (electrochemical gas sensor detection results) and second historical detection results (ultraviolet photometric sensor detection results). For each record in the historical detection results, the corresponding detection time is extracted; these timestamps will be used for subsequent time series analysis.

[0068] Historical detection results are merged with the most recent detection result (first and second detection results) to ensure the dataset contains the most up-to-date information. Statistical methods, such as moving average, exponential smoothing, or time series analysis, are used to perform trend analysis on the historical and latest detection results. This step aims to identify patterns and trends in gas concentration changes over time, laying the foundation for subsequent anomaly detection. The first detection result (gas concentration detected by the electrochemical sensor, such as NO) is then used. x The gas concentration data (CO) and the second detection result (gas concentration detected by the ultraviolet photometric sensor, such as O3) are compared with historical data for the corresponding time period to analyze the consistency or difference between the current detection results and historical trends. The gas concentration data are plotted on a time axis to form a concentration change curve. Each point on the curve represents the gas concentration at different detection times. This intuitive chart allows for a clearer observation of the dynamic changes in gas concentration.

[0069] Based on gas concentration change trends, anomaly detection algorithms (such as Z-Score, IQR method, or Autoregressive Moving Average (ARIMA) model) are applied to identify detection results that deviate from the normal trend range. These algorithms can quantify the degree of deviation and identify anomalies. Detection results are classified according to the degree of anomaly, such as minor, moderate, and severe anomalies, to facilitate subsequent fault diagnosis and maintenance decisions. The timing of anomaly detection results is analyzed to explore the temporal patterns of anomaly occurrence and whether they are related to equipment operating status, weather conditions, or other known factors. The identified anomaly detection results are displayed on a preset display screen, which may include information such as the type and concentration of the abnormal gas, the detection time, and the anomaly level.

[0070] Through the above process, not only can the changing trends of gas concentration in the target substation be monitored, but also abnormal detection results can be detected and displayed in a timely manner, providing data support for the condition assessment and fault early warning of power equipment. The operation of this system depends not only on the accuracy of real-time gas sensors, but also on powerful data processing capabilities and intelligent anomaly detection algorithms to ensure the accuracy of monitoring results and the timeliness of response.

[0071] As an optional embodiment, based on a preset gas concentration warning threshold, the system determines whether there is an abnormal location among the multiple locations according to the first and second detection results corresponding to each location; if there is an abnormal location among the multiple locations, a warning prompt is generated based on the abnormal location and the first and second detection results corresponding to the abnormal location; and the warning prompt is displayed on a preset display screen.

[0072] Optionally, by monitoring gas concentrations at multiple locations in real time and comparing them with preset warning thresholds, the aim is to promptly detect potential equipment faults or anomalies, especially partial discharges or overheating phenomena closely related to the status of electrical equipment such as switchgear and ring main units in the substation. This allows for proactive measures to prevent the escalation of faults or accidents. Displaying warning information for abnormal locations on a preset screen provides on-site maintenance personnel or remote monitoring centers with immediate key information such as fault location, gas type, and concentration, helping them quickly pinpoint problems, develop effective maintenance plans and emergency response strategies, and improve maintenance efficiency and focus. Simultaneous gas concentration detection at multiple locations, through comparative analysis, can more accurately identify which locations are abnormal, avoiding false alarms and missed alarms, and ensuring the reliability and accuracy of warning information.

[0073] Specifically, based on power industry standards and historical fault data, for each target gas (such as NO) x CO, O3, CHO xSet preset gas concentration warning thresholds. Threshold settings should fully consider the gas concentration range during normal equipment operation, as well as concentration fluctuations under different environmental conditions such as temperature and humidity. Define what concentration levels are considered abnormal; generally, gas concentrations exceeding the warning threshold are considered abnormal signals. Thresholds are divided into different levels, such as minor, moderate, and severe abnormalities, with different levels of urgency corresponding to different warning measures.

[0074] Electrochemical gas sensors and ultraviolet (UV) photometric sensors are used to periodically or continuously detect gas concentrations at multiple key locations (such as switchgear and ring main units) within the target substation. The detection results for each location include a first detection result (gas concentration detected by the electrochemical sensor) and a second detection result (gas concentration detected by the UV photometric sensor). The detection results for each location are compared with preset gas concentration warning thresholds to determine whether the concentration level at each location exceeds the corresponding warning threshold. If the detection result at any location exceeds the warning threshold, that location is identified as an abnormal location. Considering that gas concentrations may fluctuate with changes in temperature and humidity, temperature-compensated detection results should be used for concentration comparisons.

[0075] For identified anomaly locations, record the specific detection results, including gas type, concentration value, detection time, and location information. Determine the urgency level of the warning based on the degree of deviation of the anomaly detection results from the warning threshold. Minor anomalies may only require recording and continued observation, while severe anomalies may require immediate action, such as initiating an emergency response or isolating equipment. Translate the anomaly information into easily understandable warning prompts, such as: "CO concentration at location A is abnormal, reaching XX ppm; immediate inspection recommended." Warning information should include the anomaly type, location, concentration, and recommended action.

[0076] The preset display screen should have a prominent user interface, capable of distinguishing different levels of warning information and displaying it in a clear and easy-to-understand manner. Once a warning is generated, it should be updated in real-time on the preset display screen to ensure that maintenance personnel receive the alert immediately. In addition to real-time display, the system should also have the function of recording and displaying historical warning information, which is helpful for post-event analysis and troubleshooting. Warning information is not only displayed on the local screen but can also be synchronized to the monitoring screen at the maintenance center or on mobile terminal applications via network connection, forming a remote monitoring capability. Based on preset gas concentration warning thresholds, the system can accurately determine the presence of abnormal gas concentrations in multiple locations and promptly generate warnings to be displayed on the preset display screen. This process not only allows for rapid response to potential power equipment failures but also provides a scientific basis for equipment maintenance through continuous monitoring and data analysis, making it a crucial link in power system status monitoring, fault warning, and preventative maintenance. Through precise threshold settings and an efficient warning mechanism, losses caused by faults can be minimized, improving the overall operational efficiency and safety of the power system.

[0077] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0078] Through the above description of the embodiments, those skilled in the art can clearly understand that the method for detecting the decomposition gas of insulating materials in a power distribution room according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0079] According to embodiments of the present invention, a device for detecting decomposition gases of insulating materials in a substation room is also provided for implementing the above-described method for detecting decomposition gases of insulating materials in a substation room. Figure 3 This is a structural block diagram of an insulation material decomposition gas detection device in a substation room according to an embodiment of the present invention, as shown below. Figure 3 As shown, the following describes the device for detecting the decomposition gas of insulating materials in the substation room.

[0080] The air inlet is used to collect the initial gas generated by the decomposition of the insulation material at multiple locations in the target substation room.

[0081] Water vapor and dust filters are used to filter the initial gas at multiple locations to obtain the filtered gas at each location.

[0082] An electrochemical gas sensor is used to detect the concentration of a first gas in the filtered gas at multiple locations, and to obtain the first detection result at each location. The first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide.

[0083] An ultraviolet photometric sensor is used to detect the concentration of a second gas in the filtered gas at multiple locations, and to obtain a second detection result for each location, wherein the second gas includes ozone.

[0084] The display screen is used to display the first and second detection results corresponding to multiple locations.

[0085] The microprocessor unit is used to store the first and second detection results corresponding to multiple locations into a preset database.

[0086] As an optional embodiment, the above-described device further includes a temperature compensation circuit, wherein the temperature compensation circuit is used to adjust the gas signals detected by the electrochemical gas sensor and the ultraviolet photometric sensor.

[0087] Optionally, Figure 4 This is a structural block diagram of an insulating material decomposition gas detection device in a substation room according to an optional embodiment of the present invention, such as... Figure 4 As shown, the temperature compensation circuit is connected to two sensors. Its main purpose in the gas detection system is to ensure that the sensor output signal accurately reflects the true gas concentration and avoids detection errors caused by temperature changes. The performance of electrochemical gas sensors and ultraviolet photometric sensors may be affected by ambient temperature. For example, increased temperature may lead to faster sensor response and changes in sensitivity, while decreased temperature may slow down the response or affect sensor stability. The temperature compensation circuit monitors the ambient temperature in real time and adjusts the sensor output signal according to temperature changes, thereby ensuring detection accuracy.

[0088] Specifically, firstly, the internal temperature sensor continuously monitors the ambient temperature inside the substation to obtain real-time information on the temperature conditions of the detection environment. The system requires a pre-set temperature compensation coefficient table, derived from experimental data, reflecting the compensation factors required by the electrochemical gas sensor and the ultraviolet photometric sensor at different temperatures. The temperature compensation coefficient table is crucial for achieving temperature compensation, ensuring the basis for temperature correction of the sensor output signals. The electrochemical gas sensor and the ultraviolet photometric sensor detect NO respectively. x CO, O3, CHO x The gas sensor detects and converts it into electrical signals (usually current or voltage). These signals are then sent to a signal conditioning unit for preliminary processing. Simultaneously, the temperature signal read by the temperature sensor is also sent to the signal conditioning unit to ensure synchronization between the temperature information and the gas signal. The signal conditioning unit consults a temperature compensation coefficient table based on the real-time temperature data provided by the temperature sensor to obtain the compensation coefficient for the current temperature. These compensation coefficients are then used to adjust the raw output signal of the gas sensor to eliminate or reduce the influence of temperature changes on the signal reading. The specific process of signal adjustment typically involves the application of a signal compensation algorithm. This algorithm performs mathematical operations on the raw signal based on the sensor's characteristics, a physical model of the temperature's influence on the sensor, and preset compensation coefficients to obtain a temperature-compensated signal value. The temperature-compensated signal value is output to an analog-to-digital converter (ADC) to be converted into a digital signal for further processing and analysis. Finally, the temperature-compensated signal, along with other detection data, is sent to a microprocessor unit for data fusion and processing. The processed data not only reflects the actual gas concentration but also considers the influence of ambient temperature, ensuring the accuracy of the concentration reading. The processed results are displayed on a preset display screen for user reading and understanding. Through the above process, the application of temperature compensation circuit in gas detection device effectively solves the problem of the influence of ambient temperature changes on sensor readings, and improves the accuracy and reliability of gas detection.

[0089] As an optional embodiment, the above-mentioned device further includes an alarm unit, wherein the alarm unit includes a sound player and an LED light, wherein the sound player is used to play an alarm sound when an abnormality is detected in the target substation room, and the LED light is used to illuminate to remind when an abnormality is detected in the target substation room.

[0090] Optionally, Figure 4This is a structural block diagram of an insulating material decomposition gas detection device in a power distribution room according to an optional embodiment of the present invention. As shown in Figure 4, the alarm unit is connected to the microprocessor unit and may include a sound player and an LED light. Its main purpose is to provide an immediate and conspicuous warning signal. When the gas detection device detects that the gas concentration in the power distribution room exceeds the preset warning threshold, an abnormal situation exists. Through the dual prompts of sound and light, it ensures that on-site personnel can quickly notice potential dangers or faults so as to take timely countermeasures, protect personnel safety, and avoid further damage to equipment.

[0091] Specifically, when an abnormal gas concentration is detected, the microprocessor unit in the device immediately analyzes the concentration, type, and detection location of the abnormal gas. Once the anomaly is confirmed, the microprocessor sends an alarm signal to the alarm unit. The sound player in the alarm unit receives the alarm signal from the microprocessor unit, activates, and plays a pre-set alarm sound. This sound should be loud enough and alert to be clearly heard even in noisy substation rooms. The sound player will continue or loop the alarm sound until the anomaly is confirmed and resolved, at which point it will receive a signal to clear the alarm. When the alarm signal reaches the LED light, the LED light is immediately activated and begins to illuminate, entering a flashing mode. The flashing frequency and mode can be preset according to the urgency of the alarm; for example, rapid flashing is used for severe anomalies, and slow flashing for minor anomalies. Different LED colors may encode different alarm types or urgency levels, such as red for severe alarms and yellow for warnings, to enhance visual recognition. The sound player and LED light can be designed for linked alarms, meaning that both activate simultaneously when an anomaly is detected, ensuring that the alarm signal is noticed by staff even in visually limited or noisy environments.

[0092] Staff can confirm alarm information, including the type, concentration, and location of the abnormal gas, through the device's display screen. After confirmation, they can manually operate the device to deactivate the alarm. In some designs, the alarm unit automatically stops alarming when the gas concentration drops to a safe range. The microprocessor unit monitors changes in gas concentration and automatically sends a deactivation signal to the alarm unit once the abnormal situation is resolved. The alarm unit, through the combined use of a sound player and LED lights, provides an immediate and effective alarm mechanism for the gas detection device. It can communicate any abnormal situation to on-site personnel immediately. Whether in a noisy substation or a poorly lit environment, the alarm unit ensures accurate transmission of alarm signals, providing maintenance personnel with timely information to respond quickly, take appropriate measures to handle the abnormality, protect personnel safety, and prevent further damage to electrical equipment. It is an indispensable safety component in power system condition monitoring and fault early warning systems.

[0093] Embodiments of the present invention may provide a computer device. Optionally, in this embodiment, the computer device may be located in at least one of a plurality of network devices in a computer network. The computer device includes a memory and a processor.

[0094] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the method and device for detecting the decomposition gas of insulating materials in a substation room in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the aforementioned method for detecting the decomposition gas of insulating materials in a substation room. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0095] The processor can access information and application programs stored in the memory via a transmission device to perform the following steps: collecting initial gases generated by the decomposition of insulating materials at multiple locations in the target substation; filtering the initial gases at each location to obtain filtered gases at each location; detecting the concentration of a first gas in the filtered gases at each location based on an electrochemical gas sensor to obtain a first detection result for each location, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; detecting the concentration of a second gas in the filtered gases at each location based on an ultraviolet photometric sensor to obtain a second detection result for each location, wherein the second gas includes ozone; storing the first and second detection results for each location in a preset database and displaying them on a preset display screen.

[0096] Optionally, the processor may also execute program code for the following steps: obtaining first detection results corresponding to multiple locations and obtaining second detection results corresponding to multiple locations, including: detecting the ambient temperature in the target substation room; determining a target compensation coefficient corresponding to the ambient temperature based on a preset correspondence between temperature and gas concentration compensation coefficients; using the target compensation coefficient to compensate for the concentration of the first gas in the filtered gas corresponding to multiple locations to obtain the first detection results corresponding to multiple locations; and using the target compensation coefficient to compensate for the concentration of the second gas in the filtered gas corresponding to multiple locations to obtain the second detection results corresponding to multiple locations.

[0097] Optionally, the processor may also execute program code for the following steps: compensating for the concentration of the second gas in the filtered gas at multiple locations using a target compensation coefficient to obtain the second detection result at each of the multiple locations, including: compensating for the concentration of the second gas in the filtered gas at multiple locations based on a preset formula and a target compensation coefficient to obtain the second detection result at each of the multiple locations, wherein the preset formula is as follows: ,in, This is the second test result. This refers to the optical path length of the absorption cell in the ultraviolet photometric sensor. The target compensation coefficient, This represents the ozone absorption coefficient in the ultraviolet photometric sensor. The light intensity of the filtered gas as it passes through the absorption cell is measured. The light intensity detected when zero air passes through the absorption cell. For ambient temperature, The standard temperature corresponding to zero air.

[0098] Optionally, the processor may also execute program code for the following steps: collecting standard gas; detecting the standard gas at multiple sample temperatures using an electrochemical gas sensor and an ultraviolet photometric sensor to obtain detection results corresponding to each of the multiple sample temperatures; and determining the correspondence between temperature and gas concentration compensation coefficients based on the multiple sample temperatures and their respective detection results.

[0099] Optionally, the processor may also execute program code for the following steps: acquiring historical detection results and the detection time corresponding to the historical detection results, wherein the historical detection results include a first historical detection result and a second historical detection result; determining the gas concentration change trend in the target substation room based on the historical detection results, the first detection result, and the second detection result; determining the abnormal detection result in the target substation room based on the detection time and the gas concentration change trend; and displaying the abnormal detection result on a preset display screen.

[0100] Optionally, the processor may also execute program code that performs the following steps: based on a preset gas concentration warning threshold, determine whether there is an abnormal location among the multiple locations according to the first and second detection results corresponding to each of the multiple locations; if there is an abnormal location among the multiple locations, generate a warning prompt based on the abnormal location, the first detection result and the second detection result corresponding to the abnormal location; and display the warning prompt on a preset display screen.

[0101] This invention provides a method for detecting gases generated by the decomposition of insulating materials in a substation. The method involves collecting initial gases generated by the decomposition of insulating materials at multiple locations within the target substation; filtering these initial gases to obtain filtered gases at each location; detecting the concentration of a first gas in the filtered gases at each location using an electrochemical gas sensor to obtain a first detection result for each location, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; detecting the concentration of a second gas in the filtered gases at each location using an ultraviolet photometric sensor to obtain a second detection result for each location, wherein the second gas includes ozone; and storing the first and second detection results at each location in a preset database and displaying them on a preset display screen. This method achieves targeted detection of gas concentrations, thereby improving the accuracy of gas detection and solving the technical problem that the decomposition of insulating materials in substations generates many other types of gases, making it difficult for a single sensor to accurately detect multiple characteristic gases simultaneously, leading to low accuracy in subsequent defect detection.

[0102] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a non-volatile storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0103] Embodiments of the present invention also provide a non-volatile storage medium. Optionally, in this embodiment, the aforementioned non-volatile storage medium can be used to store the program code executed by the method for detecting the decomposition gas of insulating materials in a substation room provided in the above embodiments.

[0104] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.

[0105] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: collecting initial gases generated by the decomposition of insulating materials at multiple locations in the target substation; filtering the initial gases at multiple locations to obtain filtered gases at multiple locations; detecting the concentration of a first gas in the filtered gases at multiple locations based on an electrochemical gas sensor to obtain a first detection result at multiple locations, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; detecting the concentration of a second gas in the filtered gases at multiple locations based on an ultraviolet photometric sensor to obtain a second detection result at multiple locations, wherein the second gas includes ozone; storing the first and second detection results at multiple locations in a preset database and displaying them on a preset display screen.

[0106] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: obtaining first detection results corresponding to multiple locations and obtaining second detection results corresponding to multiple locations, including: detecting the ambient temperature in the target substation room; determining a target compensation coefficient corresponding to the ambient temperature based on a preset correspondence between temperature and gas concentration compensation coefficients; compensating for the concentration of the first gas in the filtered gas corresponding to multiple locations using the target compensation coefficient to obtain the first detection results corresponding to multiple locations; and compensating for the concentration of the second gas in the filtered gas corresponding to multiple locations using the target compensation coefficient to obtain the second detection results corresponding to multiple locations.

[0107] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: compensating for the concentration of the second gas in the filtered gas at multiple locations using a target compensation coefficient to obtain the second detection result at each of the multiple locations, including: compensating for the concentration of the second gas in the filtered gas at multiple locations based on a preset formula and a target compensation coefficient to obtain the second detection result at each of the multiple locations, wherein the preset formula is as follows: ,in, This is the second test result. This refers to the optical path length of the absorption cell in the ultraviolet photometric sensor. The target compensation coefficient, This represents the ozone absorption coefficient in the ultraviolet photometric sensor. The light intensity of the filtered gas as it passes through the absorption cell is measured. The light intensity detected when zero air passes through the absorption cell. For ambient temperature, The standard temperature corresponding to zero air.

[0108] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: collecting standard gas; detecting the standard gas at multiple sample temperatures based on an electrochemical gas sensor and an ultraviolet photometric sensor to obtain detection results corresponding to each of the multiple sample temperatures; and determining the correspondence between temperature and gas concentration compensation coefficient based on the multiple sample temperatures and the detection results corresponding to each of the multiple sample temperatures.

[0109] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: obtaining historical detection results and the detection time corresponding to the historical detection results, wherein the historical detection results include a first historical detection result and a second historical detection result; determining the gas concentration change trend in the target substation room based on the historical detection results, the first detection result, and the second detection result; determining the abnormal detection result of the target substation room based on the detection time and the gas concentration change trend; and displaying the abnormal detection result on a preset display screen.

[0110] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: based on a preset gas concentration warning threshold, determining whether there is an abnormal location among the multiple locations according to the first detection result and the second detection result corresponding to each of the multiple locations; if there is an abnormal location among the multiple locations, generating a warning prompt based on the abnormal location, the first detection result and the second detection result corresponding to the abnormal location; and displaying the warning prompt on a preset display screen.

[0111] Embodiments of the present invention also provide a computer program product, including a computer program. Optionally, in this embodiment, when the computer program is executed by a processor, it can: collect initial gases generated by the decomposition of insulating materials at multiple locations in a target substation; filter the initial gases at multiple locations to obtain filtered gases at multiple locations; detect the concentration of a first gas in the filtered gases at multiple locations based on an electrochemical gas sensor to obtain a first detection result at multiple locations, wherein the first gas includes carbon monoxide, nitric oxide, and nitrogen dioxide; detect the concentration of a second gas in the filtered gases at multiple locations based on an ultraviolet photometric sensor to obtain a second detection result at multiple locations, wherein the second gas includes ozone; and store the first and second detection results at multiple locations in a preset database and display them on a preset display screen.

[0112] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0113] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0114] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0115] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0116] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0117] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0118] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for detecting decomposition gases from insulating materials in a substation room, characterized in that, include: Collect the initial gases generated by the decomposition of insulating materials at multiple locations within the target substation room; The initial gas corresponding to each of the plurality of locations is filtered to obtain the filtered gas corresponding to each of the plurality of locations. Based on an electrochemical gas sensor, the concentration of a first gas in the filtered gas at each of the multiple locations is detected to obtain a first detection result for each of the multiple locations, wherein the first gas includes carbon monoxide, nitric oxide and nitrogen dioxide; Based on an ultraviolet photometric sensor, the concentration of a second gas in the filtered gas at each of the multiple locations is detected to obtain a second detection result for each of the multiple locations, wherein the second gas includes ozone; The first and second detection results corresponding to each of the multiple locations are stored in a preset database and displayed on a preset display screen.

2. The method according to claim 1, characterized in that, Obtaining the first detection result corresponding to each of the plurality of locations and obtaining the second detection result corresponding to each of the plurality of locations includes: Detect the ambient temperature in the target substation room; Based on the preset correspondence between temperature and gas concentration compensation coefficients, a target compensation coefficient corresponding to the ambient temperature is determined. The target compensation coefficient is used to compensate for the concentration of the first gas in the filtered gas corresponding to each of the plurality of locations, to obtain the first detection result corresponding to each of the plurality of locations; and the target compensation coefficient is used to compensate for the concentration of the second gas in the filtered gas corresponding to each of the plurality of locations, to obtain the second detection result corresponding to each of the plurality of locations.

3. The method according to claim 2, characterized in that, The step of compensating for the concentration of the second gas in the filtered gas corresponding to each of the multiple locations using the target compensation coefficient to obtain the second detection result corresponding to each of the multiple locations includes: Based on the preset formula and the target compensation coefficient, the concentration of the second gas in the filtered gas corresponding to each of the multiple locations is compensated to obtain the second detection result corresponding to each of the multiple locations. The preset formula is as follows: ， in, The second detection result is... The optical path length of the absorption cell in the ultraviolet photometric sensor is [missing information]. The target compensation coefficient is... The ozone absorption coefficient in the ultraviolet photometric sensor is given. The light intensity detected when the filtered gas passes through the absorption cell. The light intensity detected when zero air passes through the absorption cell. The ambient temperature is... This refers to the standard temperature corresponding to zero air.

4. The method according to claim 2, characterized in that, Also includes: Collect standard gases; At multiple sample temperatures, the standard gas is detected based on the electrochemical gas sensor and the ultraviolet photometric sensor to obtain the detection results corresponding to each of the multiple sample temperatures; Based on the temperatures of the multiple samples and the corresponding detection results, the correspondence between the temperature and the gas concentration compensation coefficient is determined.

5. The method according to claim 1, characterized in that, Also includes: Obtain historical detection results and the detection times corresponding to the historical detection results, wherein the historical detection results include a first historical detection result and a second historical detection result; Based on the historical detection results, the first detection result, and the second detection result, the gas concentration change trend in the target substation room is determined; Based on the detection time and the gas concentration change trend, the abnormal detection result of the target substation room is determined; The anomaly detection results are displayed on the preset display screen.

6. The method according to claim 1, characterized in that, Also includes: Based on a preset gas concentration warning threshold, and according to the first and second detection results corresponding to each of the multiple locations, it is determined whether there are any abnormal locations among the multiple locations; If the abnormal location exists among the multiple locations, an early warning prompt is generated based on the abnormal location, the first detection result and the second detection result corresponding to the abnormal location; The warning message is displayed on the preset display screen.

7. A device for detecting the decomposition gas of insulating materials in a substation room, characterized in that, include: The air inlet is used to collect the initial gas generated by the decomposition of the insulation material at multiple locations in the target substation room. A water vapor and dust filter is used to filter the initial gas corresponding to each of the multiple locations to obtain the filtered gas corresponding to each of the multiple locations. An electrochemical gas sensor is used to detect the concentration of a first gas in the filtered gas at each of the multiple locations, and to obtain a first detection result at each of the multiple locations, wherein the first gas includes carbon monoxide, nitric oxide and nitrogen dioxide; An ultraviolet photometric sensor is used to detect the concentration of a second gas in the filtered gas at each of the multiple locations, and to obtain a second detection result at each of the multiple locations, wherein the second gas includes ozone; A display screen is used to display the first and second detection results corresponding to each of the plurality of locations; The microprocessor unit is used to store the first detection result and the second detection result corresponding to each of the plurality of locations into a preset database.

8. The apparatus according to claim 7, characterized in that, It also includes a temperature compensation circuit, wherein the temperature compensation circuit is used to adjust the gas signals detected by the electrochemical gas sensor and the ultraviolet photometric sensor.

9. The apparatus according to claim 7, characterized in that, It also includes an alarm unit, which includes a sound player and an LED light. The sound player is used to play an alarm sound when an abnormality is detected in the target substation room, and the LED light is used to illuminate to remind the user when an abnormality is detected in the target substation room.

10. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the non-volatile storage medium to perform the method for detecting decomposition gases of insulating materials in a power distribution room as described in any one of claims 1 to 6.

11. A computer device, characterized in that, include: Memory and processor The memory stores computer programs; The processor is configured to execute a computer program stored in the memory, wherein when the computer program is executed, the processor performs the method for detecting decomposition gases of insulating materials in a power distribution room as described in any one of claims 1 to 6.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the method for detecting decomposition gases of insulating materials in a power distribution room as described in any one of claims 1 to 6.

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