Thermal power plant control system control cabinet water immersion alarm method and system

Abstract

The invention discloses a thermal power plant control system control cabinet water immersion alarm method and system, and relates to the technical field of safety monitoring, and the method comprises the steps: arranging a sensor in a control cabinet of a thermal power plant, and collecting the data of the control cabinet in real time; dynamically adjusting an alarm threshold value of the sensor based on the stored environment reference value; according to a dynamically set alarm threshold value, executing collaborative judgment operation of multi-sensor data; and executing graded alarm operation on the basis of judging the water immersion state. Through cooperative monitoring of multiple sensors, dynamic threshold adjustment and graded alarm judgment, the problems of inaccurate water immersion monitoring and unreasonable response are solved, and accurate monitoring of the water immersion state of the control cabinet is realized. Dynamic adjustment of an alarm threshold is carried out based on an environment reference value to adapt to environment changes and reduce false alarms; and corresponding alarm and protection measures are taken under different water immersion severity degrees through grading judgment logic of basic alarm, primary alarm and emergency alarm, so that the safe operation of the control cabinet of the thermal power plant is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of safety monitoring, and in particular to a water flooding alarm method and system for a control cabinet of a thermal power plant control system. Background Art

[0002] In the control system of a thermal power plant, the control cabinet is usually used to centrally manage and dispatch important electrical equipment and control modules to ensure the normal operation of the power plant. However, the control cabinet is often affected by environmental factors, especially in a humid or water-filled environment, where water immersion may occur, causing short circuits, corrosion, and even shutdown accidents of the equipment in the control cabinet. Currently, the commonly used water immersion monitoring methods mostly rely on the threshold judgment of a single sensor, and an alarm is triggered when the data collected by the sensor exceeds the set threshold. However, due to the complex environmental changes in thermal power plants, the fixed threshold setting of a single sensor is prone to false alarms or missed alarms when the humidity and temperature fluctuate, and it is impossible to effectively distinguish the severity of water immersion, and lacks a graded response mechanism. Therefore, there is an urgent need for a control cabinet water immersion monitoring method that can dynamically adjust the alarm threshold, determine the water immersion state through multi-sensor collaboration, and perform graded alarms according to the degree of water immersion, so as to improve the accuracy of water immersion detection and the rationality of system response. Summary of the invention

[0003] In view of the above-mentioned problems, the present invention is proposed.

[0004] Therefore, the technical problem solved by the present invention is: how to achieve accurate water immersion monitoring and graded alarm in the control cabinet of a thermal power plant control system to adapt to complex and changeable environmental conditions, and effectively reduce false alarms and missed alarms to ensure the safe operation of equipment in the control cabinet.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a water flooding alarm method for a control cabinet of a thermal power plant control system, which comprises the following steps:

[0006] Arrange sensors in the control cabinet of the thermal power plant to collect control cabinet data in real time;

[0007] Dynamically adjust the sensor's alarm threshold based on stored environmental baseline values;

[0008] Perform collaborative judgment operations on multi-sensor data based on dynamically set alarm thresholds;

[0009] A graded alarm operation is performed based on the determination of the water immersion state.

[0010] As a preferred solution of the water flooding alarm method for a control cabinet of a thermal power plant control system described in the present invention, wherein: the arrangement of sensors in the control cabinet of the thermal power plant to collect control cabinet data in real time includes:

[0011] A water level sensor, a humidity sensor and a temperature sensor are arranged in the control cabinet. The water level sensor is arranged at the bottom of the control cabinet, the humidity sensor is arranged at the middle or upper position of the control cabinet, and the temperature sensor is installed at a designated position inside the control cabinet;

[0012] Collect the initial water level, humidity and temperature data in the control cabinet and use the initial data as the environmental benchmark value of the control cabinet.

[0013] As a preferred solution of the water flooding alarm method for a control cabinet of a thermal power plant control system described in the present invention, the dynamic adjustment of the alarm threshold of the sensor based on the stored environmental reference value includes:

[0014] According to the preset collection cycle, the control unit receives the current data collected in real time by the water level, humidity and temperature sensors, and performs denoising and de-duplication preprocessing;

[0015] The current data obtained after preprocessing is compared with the environmental reference value, and the current environmental state is judged based on the comparison result. If the fluctuation of humidity or temperature data exceeds the environmental reference value range, the threshold is dynamically adjusted.

[0016] As a preferred solution of the water flooding alarm method for a control cabinet of a thermal power plant control system described in the present invention, the dynamic adjustment of the threshold value includes:

[0017] When the humidity data increases compared to the baseline humidity value, the alarm threshold of the humidity sensor is increased to keep consistent with the current humidity change state;

[0018] When the temperature data increases compared to the reference temperature value, the alarm thresholds of the humidity sensor and water level sensor are adjusted to match the humidity and water level changes required when the temperature rises;

[0019] When the temperature data decreases compared to the reference temperature value, the alarm thresholds of the humidity sensor and the water level sensor are lowered to match the environmental changes of humidity and water level under low temperature conditions.

[0020] As a preferred solution of the water immersion alarm method for a control cabinet of a thermal power plant control system described in the present invention, the collaborative judgment operation of multi-sensor data performed based on the dynamically set alarm threshold includes performing signal correlation calculation on the collected data of the water level sensor, humidity sensor and temperature sensor to complete a comprehensive judgment of the water immersion status in the control cabinet.

[0021] As a preferred solution of the water flooding alarm method for a control cabinet of a thermal power plant control system described in the present invention, wherein: performing a collaborative judgment operation of multi-sensor data according to a dynamically set alarm threshold includes:

[0022] When the data of the water level sensor reaches the water level alarm threshold, and the data of the humidity sensor also reaches the humidity alarm threshold, it is determined to be a water immersion state;

[0023] When the data of the water level sensor reaches the water level alarm threshold, and the data of the temperature sensor is higher than the temperature threshold, it is determined to be in a water immersion state;

[0024] When the humidity sensor data reaches the humidity alarm threshold, and the temperature sensor data is higher than the temperature threshold, it is determined to be in a water immersion state;

[0025] When flooding occurs, only a normal alarm signal is sent to the remote monitoring center, allowing operation and maintenance personnel to know the flooding status and determine the alarm level based on the trend of sensor data.

[0026] As a preferred solution of the water flooding alarm method for a control cabinet of a thermal power plant control system described in the present invention, the alarm levels include:

[0027] If the value change range of the water level sensor and humidity sensor is less than the preset change threshold within the set continuous collection cycle, it is judged as a first-level alarm;

[0028] If the value change range of the water level sensor and the temperature sensor is less than the preset change threshold within the set continuous collection cycle, it is judged as a first-level alarm;

[0029] In the first-level alarm state, the sound and light alarm device in the control cabinet is activated, and a common alarm signal is sent to the remote monitoring center;

[0030] If the data of the water level sensor continuously exceeds the water level alarm threshold, and the growth slope of the humidity sensor within the set continuous collection cycle exceeds the preset threshold, it is judged as an emergency alarm;

[0031] If the data of the water level sensor is significantly higher than the water level alarm threshold, and the data of the temperature sensor remains above the temperature alarm threshold within the set continuous collection period, and the fluctuation range exceeds the set change threshold, it is judged as an emergency alarm;

[0032] In the emergency alarm state, the sound and light alarm device is activated, the emergency alarm signal is sent to the remote monitoring center, and the emergency protection operation is triggered.

[0033] Another object of the present invention is to provide a water flooding alarm system for a control cabinet of a thermal power plant control system, which can accurately detect and promptly respond to the water flooding status in the control cabinet through multi-sensor collaborative monitoring, dynamic threshold adjustment, and multi-level alarm judgment based on the severity of the water flooding, thereby solving the problems of false alarms, missed alarms, and inability to distinguish the severity of the water flooding in the prior art due to a single threshold setting.

[0034] In order to solve the above technical problems, the present invention provides the following technical solutions: A water flooding alarm system for a control cabinet of a thermal power plant control system, comprising: a sensor acquisition module, a data processing and dynamic threshold adjustment module, a collaborative judgment and alarm classification module, and an alarm and emergency protection module;

[0035] The sensor acquisition module collects real-time data in the control cabinet, and obtains real-time environmental data in the control cabinet through water level sensors, humidity sensors and temperature sensors arranged in different positions;

[0036] The data processing and dynamic threshold adjustment module performs real-time analysis and processing on the data collected by the sensor, and dynamically adjusts the alarm thresholds of water level, humidity and temperature according to the environmental baseline value and the current environmental status;

[0037] The collaborative judgment and alarm classification module determines whether the water flooding state has occurred based on the dynamically adjusted threshold value and the trend of the sensor data, and performs alarm classification operations according to different water flooding severity levels;

[0038] The alarm and emergency protection module performs corresponding alarm and protection operations according to the alarm signal output by the collaborative judgment and alarm classification module.

[0039] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above-mentioned method for alarming water flooding in a control cabinet of a thermal power plant control system are implemented.

[0040] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a water flooding alarm method for a control cabinet of a thermal power plant control system as described above.

[0041] The beneficial effects of the present invention are as follows: through multi-sensor collaborative monitoring, dynamic threshold adjustment and hierarchical alarm judgment, the problems of inaccurate water flooding monitoring and unreasonable response in the prior art are solved, and accurate monitoring and reasonable response of the water flooding status of the control cabinet are achieved. Specifically, the system improves the detection accuracy through the collaborative monitoring of water level, humidity and temperature sensors; dynamically adjusts the alarm threshold based on the environmental reference value to adapt to environmental changes and reduce false alarms; and adopts corresponding alarm and protection measures under different water flooding severity through the hierarchical judgment logic of basic alarm, first-level alarm and emergency alarm, thereby effectively ensuring the safe operation of the thermal power plant control cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0043] Figure 1 The present invention provides an overall flow chart of a method for alarming water flooding in a control cabinet of a thermal power plant control system according to the first embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0045] Example 1, reference Figure 1 According to an embodiment of the present invention, a water flooding alarm method for a control cabinet of a thermal power plant control system is provided, comprising:

[0046] Arrange sensors in the control cabinet of the thermal power plant to collect control cabinet data in real time;

[0047] Dynamically adjust the sensor's alarm threshold based on stored environmental baseline values;

[0048] Perform collaborative judgment operations on multi-sensor data based on dynamically set alarm thresholds;

[0049] A graded alarm operation is performed based on the determination of the water immersion state.

[0050] A water level sensor, a humidity sensor and a temperature sensor are arranged in the control cabinet. The water level sensor is arranged at the bottom of the control cabinet, the humidity sensor is arranged at the middle or upper position of the control cabinet, and the temperature sensor is installed at a designated position inside the control cabinet;

[0051] Collect the initial water level, humidity and temperature data in the control cabinet and use the initial data as the environmental benchmark value of the control cabinet.

[0052] It is further explained that:

[0053] The dynamic setting of the alarm threshold is automatically adjusted by the control unit based on the environmental baseline value of the control cabinet, seasonal climate changes and historical humidity data to adapt to the temperature and humidity changes in the environment where the control cabinet is located.

[0054] According to the preset collection cycle, the control unit receives the current data collected in real time by the water level, humidity and temperature sensors, and performs denoising and de-duplication preprocessing;

[0055] The current data obtained after preprocessing is compared with the environmental reference value, and the current environmental state is judged based on the comparison result. If the fluctuation of humidity or temperature data exceeds the environmental reference value range, the threshold is dynamically adjusted.

[0056] When the humidity data increases compared to the baseline humidity value, the alarm threshold of the humidity sensor is increased to keep consistent with the current humidity change state;

[0057] When the temperature data increases compared to the reference temperature value, the alarm thresholds of the humidity sensor and water level sensor are adjusted to match the humidity and water level changes required when the temperature rises;

[0058] When the temperature data decreases compared to the reference temperature value, the alarm thresholds of the humidity sensor and the water level sensor are lowered to match the environmental changes of humidity and water level under low temperature conditions.

[0059] It is further explained that:

[0060] The humidity of the environment where the control cabinet is located will vary greatly in different seasons or weather conditions. For example, in the rainy season or summer, the humidity is usually high; while in the dry season, the humidity is low. If a fixed humidity alarm threshold is used, it is easy to false alarm in the high humidity season, and it may not be sensitive enough in the dry season. By dynamically adjusting the humidity threshold, the system can increase the threshold in a high humidity environment to reduce false alarms caused by natural humidity fluctuations; in a dry environment, the system will lower the humidity threshold to ensure sensitive response to humidity changes.

[0061] The temperature inside the control cabinet can also change due to seasonal temperatures, external equipment operation, and other factors. Rising temperatures can cause humidity sensor readings to change and can also cause condensation inside the control cabinet. By appropriately increasing the humidity and water level thresholds in high temperature conditions, the system can avoid false alarms caused by rising temperatures. In low temperature environments, the system lowers the thresholds to more sensitively detect possible condensation or water leaks.

[0062] The change of water level may be disturbed in high humidity or abnormal temperature environment. Dynamic adjustment of the threshold of water level sensor can help reduce false alarms caused by environmental noise or short-term abnormal fluctuations. For example, in high humidity environment, the system raises the water level threshold to reduce false alarms caused by humidity interference. In low humidity conditions, the water level threshold is lowered, so that the system can detect possible flooding problems earlier.

[0063] Fixed alarm thresholds are prone to false alarms in complex environments, reducing system reliability and operation and maintenance efficiency. By real-time monitoring of environmental data and adaptive adjustment, the system can flexibly change the threshold according to the actual environmental status, thereby maintaining the stability of the alarm system and effectively improving the accuracy of detection. The dynamic adjustment design reduces the limitations of fixed threshold settings, allowing the system to work stably in a changing external environment and reducing the need for human intervention.

[0064] Signal correlation calculation is performed on the collected data of the water level sensor, humidity sensor and temperature sensor to complete the comprehensive judgment of the water immersion status in the control cabinet.

[0065] When the data of the water level sensor reaches the water level alarm threshold, and the data of the humidity sensor also reaches the humidity alarm threshold, it is determined to be a water immersion state;

[0066] When the data of the water level sensor reaches the water level alarm threshold, and the data of the temperature sensor is higher than the temperature threshold, it is determined to be in a water immersion state;

[0067] When the humidity sensor data reaches the humidity alarm threshold, and the temperature sensor data is higher than the temperature threshold, it is determined to be in a water immersion state;

[0068] When flooding occurs, only a normal alarm signal is sent to the remote monitoring center, allowing operation and maintenance personnel to know the flooding status and determine the alarm level based on the trend of sensor data.

[0069] If the value change range of the water level sensor and humidity sensor is less than the preset change threshold within the set continuous collection cycle, it is judged as a first-level alarm;

[0070] If the value change range of the water level sensor and the temperature sensor is less than the preset change threshold within the set continuous collection cycle, it is judged as a first-level alarm;

[0071] In the first-level alarm state, the sound and light alarm device in the control cabinet is activated, and a common alarm signal is sent to the remote monitoring center;

[0072] If the data of the water level sensor continuously exceeds the water level alarm threshold, and the growth slope of the humidity sensor within the set continuous collection cycle exceeds the preset threshold, it is judged as an emergency alarm;

[0073] If the data of the water level sensor is significantly higher than the water level alarm threshold, and the data of the temperature sensor remains above the temperature alarm threshold within the set continuous collection period, and the fluctuation range exceeds the set change threshold, it is judged as an emergency alarm;

[0074] In the emergency alarm state, the sound and light alarm device is activated, the emergency alarm signal is sent to the remote monitoring center, and the emergency protection operation is triggered.

[0075] It is further explained that:

[0076] The emergency alarm signal is sent to the monitoring system or the mobile device of the operation and maintenance personnel through the wireless communication module, so as to quickly respond to the flood alarm in an emergency.

[0077] The alarm triggering time, alarm duration and alarm release time are stored to form alarm history records for subsequent maintenance and analysis. The working status of water level sensors, humidity sensors and temperature sensors are regularly checked, and the working accuracy of the sensors is judged by comparing the conductivity changes or deviation values ​​of the sensor collected data, so as to realize sensor fault detection.

[0078] The collected data of humidity sensor and water level sensor are processed by time series analysis algorithm, and the continuous change trend of the data is analyzed. When the changes of humidity and water level data meet the characteristics of flooding trend, the control unit will issue a warning signal in advance.

[0079] Embodiment 2 is an embodiment of the present invention, which provides a system for a water flooding alarm method for a control cabinet of a thermal power plant control system, including: a sensor acquisition module, a data processing and dynamic threshold adjustment module, a collaborative judgment and alarm classification module, and an alarm and emergency protection module;

[0080] The sensor acquisition module collects real-time data in the control cabinet, and obtains real-time environmental data in the control cabinet through water level sensors, humidity sensors and temperature sensors arranged in different positions;

[0081] The data processing and dynamic threshold adjustment module performs real-time analysis and processing on the data collected by the sensor, and dynamically adjusts the alarm thresholds of water level, humidity and temperature according to the environmental baseline value and the current environmental status;

[0082] The collaborative judgment and alarm classification module determines whether the water flooding state has occurred based on the dynamically adjusted threshold value and the trend of the sensor data, and performs alarm classification operations according to different water flooding severity levels;

[0083] The alarm and emergency protection module performs corresponding alarm and protection operations according to the alarm signal output by the collaborative judgment and alarm classification module.

[0084] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.

[0085] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0086] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0087] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0088] Embodiment 3: In this embodiment, in order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments. This embodiment experiments the existing traditional method and the method of this embodiment respectively.

[0089] Verify the detection accuracy, false alarm rate, response time, rationality of graded alarms and the adaptability of the system to environmental changes of the water immersion alarm system of the present invention under different environmental conditions.

[0090] Set up environments with different humidity and temperatures, including dry, normal, humid, and extremely humid conditions; also simulate different levels of flooding.

[0091] Use water level, humidity and temperature sensors, installed according to the arrangement of the present invention.

[0092] Set a fixed collection cycle, such as collecting data once every minute. Preset fixed alarm thresholds and dynamically adjusted alarm thresholds to compare and verify the false alarm rate of dynamic threshold adjustment.

[0093] Table 1 False alarm rate comparison table

[0094]

[0095] The data in the table show the false alarm rates of fixed thresholds and dynamic thresholds under different environmental conditions. The false alarm rate is significantly reduced by adjusting the dynamic threshold, especially in humid and extremely humid environments.

[0096] Table 2 Sensor collaborative judgment accuracy test table

[0097]

[0098] Table 2 verifies the accuracy of multi-sensor collaborative judgment and analyzes the water immersion judgment effect of the system under different combination conditions.

[0099] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A water flooding alarm method for a control cabinet of a thermal power plant control system, characterized in that: include: Arrange sensors in the control cabinet of the thermal power plant to collect control cabinet data in real time; Dynamically adjust the sensor's alarm threshold based on stored environmental baseline values; Perform collaborative judgment operations on multi-sensor data based on dynamically set alarm thresholds; A graded alarm operation is performed based on the determination of the water immersion state.

2. A method for alarming water flooding in a control cabinet of a thermal power plant control system as claimed in claim 1, characterized in that: The arrangement of sensors in the control cabinet of the thermal power plant to collect control cabinet data in real time includes: A water level sensor, a humidity sensor and a temperature sensor are arranged in the control cabinet. The water level sensor is arranged at the bottom of the control cabinet, the humidity sensor is arranged at the middle or upper position of the control cabinet, and the temperature sensor is installed at a designated position inside the control cabinet; Collect the initial water level, humidity and temperature data in the control cabinet and use the initial data as the environmental benchmark value of the control cabinet.

3. A method for alarming water flooding in a control cabinet of a thermal power plant control system as claimed in claim 2, characterized in that: The dynamically adjusting the alarm threshold of the sensor based on the stored environmental reference value includes: According to the preset collection cycle, the control unit receives the current data collected in real time by the water level, humidity and temperature sensors, and performs denoising and de-duplication preprocessing; The current data obtained after preprocessing is compared with the environmental reference value, and the current environmental state is judged based on the comparison result. If the fluctuation of humidity or temperature data exceeds the environmental reference value range, the threshold is dynamically adjusted.

4. A method for alarming water flooding in a control cabinet of a thermal power plant control system as claimed in claim 3, characterized in that: The threshold dynamic adjustment includes: When the humidity data increases compared to the baseline humidity value, the alarm threshold of the humidity sensor is increased to keep consistent with the current humidity change state; When the temperature data increases compared to the reference temperature value, the alarm thresholds of the humidity sensor and water level sensor are adjusted to match the humidity and water level changes required when the temperature rises; When the temperature data decreases compared to the reference temperature value, the alarm thresholds of the humidity sensor and the water level sensor are lowered to match the environmental changes of humidity and water level under low temperature conditions.

5. A method for alarming water flooding in a control cabinet of a thermal power plant control system as claimed in claim 4, characterized in that: The collaborative judgment operation of performing multi-sensor data according to the dynamically set alarm threshold includes performing signal correlation calculation on the collected data of the water level sensor, the humidity sensor and the temperature sensor to complete a comprehensive judgment on the water immersion status in the control cabinet.

6. A method for alarming water flooding in a control cabinet of a thermal power plant control system as claimed in claim 5, characterized in that: The collaborative judgment operation of multi-sensor data is performed according to the dynamically set alarm threshold, including: When the data of the water level sensor reaches the water level alarm threshold, and the data of the humidity sensor also reaches the humidity alarm threshold, it is determined to be a water immersion state; When the data of the water level sensor reaches the water level alarm threshold, and the data of the temperature sensor is higher than the temperature threshold, it is determined to be in a water immersion state; When the humidity sensor data reaches the humidity alarm threshold, and the temperature sensor data is higher than the temperature threshold, it is determined to be in a water immersion state; When flooding occurs, only a normal alarm signal is sent to the remote monitoring center, allowing operation and maintenance personnel to know the flooding status and determine the alarm level based on the trend of sensor data.

7. A method for alarming water flooding in a control cabinet of a thermal power plant control system as claimed in claim 6, characterized in that: The alarm levels include: If the value change range of the water level sensor and humidity sensor is less than the preset change threshold within the set continuous collection cycle, it is judged as a first-level alarm; If the value change range of the water level sensor and the temperature sensor is less than the preset change threshold within the set continuous collection cycle, it is judged as a first-level alarm; In the first-level alarm state, the sound and light alarm device in the control cabinet is activated, and a common alarm signal is sent to the remote monitoring center; If the water level sensor data continues to exceed the water level alarm threshold, and the humidity sensor's growth slope exceeds the preset threshold within the set continuous collection cycle, it is judged as an emergency alarm; If the data of the water level sensor is significantly higher than the water level alarm threshold, and the data of the temperature sensor remains above the temperature alarm threshold within the set continuous collection period, and the fluctuation range exceeds the set change threshold, it is judged as an emergency alarm; In the emergency alarm state, the sound and light alarm device is activated, the emergency alarm signal is sent to the remote monitoring center, and the emergency protection operation is triggered.

8. A system using a water flooding alarm method for a control cabinet of a thermal power plant control system as claimed in any one of claims 1 to 7, characterized in that: It includes sensor acquisition module, data processing and dynamic threshold adjustment module, collaborative judgment and alarm classification module, alarm and emergency protection module; The sensor acquisition module collects real-time data in the control cabinet, and obtains real-time environmental data in the control cabinet through water level sensors, humidity sensors and temperature sensors arranged in different positions; The data processing and dynamic threshold adjustment module performs real-time analysis and processing on the data collected by the sensor, and dynamically adjusts the alarm thresholds of water level, humidity and temperature according to the environmental baseline value and the current environmental status; The collaborative judgment and alarm classification module determines whether the water flooding state has occurred based on the dynamically adjusted threshold value and the trend of the sensor data, and performs alarm classification operations according to different water flooding severity levels; The alarm and emergency protection module performs corresponding alarm and protection operations according to the alarm signal output by the collaborative judgment and alarm classification module.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a method for water flooding alarm of a control cabinet of a thermal power plant control system according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for water flooding alarm of a control cabinet of a thermal power plant control system as described in any one of claims 1 to 7 are implemented.

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