A valve tower leakage monitoring system and method

Abstract

The present invention discloses a valve tower water leakage monitoring system and method, including: a detection and sensing unit including at least one group of laser radar arrays, each group of laser radar arrays including several laser radars, real-time monitoring of data information of each valve tower in the valve hall; a number of analysis and calculation units are set, the number of which corresponds to the number of laser radars, and the image information of the corresponding valve hall is generated according to the data information of the laser radar, and the image information of the corresponding valve hall at the current moment is judged based on the pre-judgment algorithm model. Whether there is an abnormality; the data storage unit stores the image information of the valve hall corresponding to all analysis and calculation units; the judgment unit, when a certain analysis and calculation unit judges that the image information of the valve hall is abnormal, retrieves the image information of other analysis and calculation units stored in the data storage unit and overlaps with the abnormal area, and cross-comparisons the preset algorithm model to judge whether there is leakage in the valve hall. The system of the present invention is convenient for detecting leakage inside the valve hall, and can detect small-capacity leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of power system monitoring, and in particular to a valve tower water leakage monitoring system and method. Background Art

[0002] The converter valve is the core equipment in the DC transmission system. The design capacity of ±800kV UHV DC transmission projects is usually above 8GW. Under rated working conditions, the heat loss generated by the thyristor semiconductor devices in the UHV converter valve is as high as 20MW, which must be removed from the converter valve through an effective water cooling system. Therefore, the converter valve water cooling system is an extremely important component of the UHV DC transmission system. In the UHV converter valve, the pipeline for circulating deionized cooling water is hundreds of meters long, and there are thousands of interfaces that use melting technology and threaded fastening and sealing. Under the long-term action of electric power and water flow impact, as well as the aging and deterioration of rubber sealing materials, it is very easy to cause leakage of cooling water, or even leakage. The leakage of cooling water will have a strong weakening effect on the insulation of high-voltage electrical equipment, which will lead to serious consequences such as partial discharge and surface discharge short circuit.

[0003] At present, the valve cooling system of each DC converter station is equipped with various types of liquid level gauges to measure the liquid level of the expansion water tank, spray pool, etc. of the valve cooling system, and the measurement signal is sent to the valve cooling protection system and the water replenishment control module of the control system. Since the liquid level gauge calibration technology generally adopts the connection principle, it is bulky and can only be calibrated in the laboratory. At the same time, due to the large water storage capacity of the water cooling system, it can usually reach 2m 3 As mentioned above, for milliliter-level leakage, it is impossible to judge by monitoring the water level, water pressure, flow rate and other parameters in the water storage tank. There is a problem that it is difficult to detect leakage inside the valve hall and it is impossible to detect small-volume leakage. Summary of the invention

[0004] Based on this, the technical problem to be solved by the present invention is to overcome the defects of the difficulty in detecting internal leakage of the valve hall in the valve tower of the prior art and the inability to detect small-capacity leakage, thereby providing a valve tower leakage monitoring system and method.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a valve tower water leakage monitoring system, comprising:

[0007] A detection and sensing unit, the detection and sensing unit comprises: at least one group of laser radar arrays, wherein each group of the laser radar arrays comprises: a plurality of laser radars for real-time monitoring of data information of each valve tower in the valve hall;

[0008] The analyzing and calculating units are provided in a plurality, and the number of the analyzing and calculating units corresponds to the number of the laser radars in the detecting and sensing unit, and are used to generate image information of the corresponding valve hall according to the corresponding laser radar data information, and to judge the valve hall area covered by the radar based on the pre-judgment algorithm model, and to judge whether there is any abnormality in the image information of the corresponding valve hall at the current moment, and the abnormality includes: pre-judgment of valve hall leakage;

[0009] A data storage unit, used to store image information of the valve hall corresponding to all the laser radars;

[0010] The judgment unit, when one of the several analysis and calculation units determines that the image information of the valve hall is abnormal, retrieves the image information formed by other laser radars from the data storage unit, wherein the monitoring space area covered by the retrieved image information includes the area predicted to be abnormal, and according to the retrieved multiple groups of image information, a cross-comparison is performed based on a preset algorithm model to determine whether there is leakage in the valve hall area.

[0011] Optionally, it also includes: an alarm display unit, which is used to display the alarm information of the abnormal valve hall position point and to issue an alarm in a predetermined alarm form.

[0012] Optionally, the laser radars in each group of the laser radar array in the detection and perception unit are arranged on the same horizontal line.

[0013] Optionally, it also includes: a wireless communication module, which is used to establish a connection with a monitoring person and send the alarm information to a terminal device of the monitoring person.

[0014] Optionally, it also includes: an optical fiber transmission unit, which is used to complete the transmission of information between the transmission detection and perception unit, the analysis and calculation unit, the data storage unit, the judgment unit, the alarm display unit, and the wireless communication module according to the optical fiber transmission method.

[0015] Optionally, the resolution of the laser radar is selected according to information of the water droplets to be monitored.

[0016] In a second aspect, an embodiment of the present invention provides a valve tower water leakage monitoring method, based on the valve tower water leakage monitoring system described in the first aspect of the embodiment, the method comprises:

[0017] The spatial status image information of each valve tower area in the monitoring valve hall is obtained in real time through the laser radar;

[0018] Judging whether the image information of the corresponding valve hall at the current moment exists based on the pre-judgment algorithm model, the situation includes: pre-judgment of valve hall leakage;

[0019] When one of the several analysis and calculation units determines that there is an abnormality in the image information of the valve hall, the image information formed by other laser radars is retrieved from the data storage unit, wherein the monitoring space area covered by the retrieved image information includes an area predicted to be abnormal, and a cross-comparison is performed based on the preset algorithm model according to the retrieved multiple groups of image information to determine whether there is leakage in the valve hall area.

[0020] Optionally, the method further includes: generating an abnormal result of a leaking valve hall according to the water drop information of the leaking valve hall image information, wherein the abnormal result includes: the leakage amount of the valve hall and the location point of the abnormal valve hall.

[0021] Optionally, it also includes: monitoring personnel receiving abnormal results indicating the presence of a leaking valve hall according to a predetermined alarm form.

[0022] Optionally, the sampling frequency of the laser radar on the valve hall is determined according to the shortest time taken for a water drop to pass through a preset monitoring space distance.

[0023] The technical solution of the present invention has the following advantages:

[0024] 1. The valve tower water leakage detection system provided by the present invention can effectively improve the accuracy of water leakage monitoring, can detect milliliter-level cooling liquid leakage failures, and improve the system operation response efficiency.

[0025] 2. The valve tower leakage monitoring system provided by the present invention adopts a high-resolution laser radar as a space detection and perception unit, and has artificial intelligence recognition and analysis capabilities for the monitored spatial point cloud images. It can also monitor the liquid leakage status of the cooling system and provide early warning of leakage faults by cross-comparing multiple analysis and calculation units of the same monitoring target.

[0026] 3. In the valve tower water leakage monitoring system provided by the present invention, the monitoring area is cross-detected by multiple laser radars, thus avoiding monitoring blind spots caused by structural shielding.

[0027] 4. The valve tower leakage monitoring system and method provided by the present invention, the monitoring data generated by each laser radar is subjected to cross-sectional processing and then to independent image recognition. The data is transmitted upward only when an abnormality is determined. The modular configuration with edge computing capabilities is more conducive to the flexible configuration and upgrade of the system according to different monitoring environments.

[0028] 5. The valve tower water leakage monitoring system and method provided by the present invention requires cross-comprehensive comparison and evaluation of abnormal data, and also requires comparison and evaluation of historical information and future information. The abnormality is confirmed by comparing the information in the "space" dimension and the "time" dimension. The cross-comparison of status information in different dimensions can avoid misjudgment caused by shielding, light, foreign body reflection, etc.

[0029] 6. The valve tower water leakage monitoring system provided by the present invention can estimate the leakage amount and leakage location according to the analysis results of different radar monitoring and analysis calculation units and the abnormal interval time in the historical data, which is helpful for the rapid response of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A principle block diagram of a specific example of a valve tower water leakage monitoring system provided by an embodiment of the present invention;

[0032] Figure 2 A top view of water leakage detection of a specific example of a converter valve tower of a valve tower water leakage monitoring system provided by an embodiment of the present invention;

[0033] Figure 3 A side view of a specific example of a converter valve tower of a valve tower water leakage monitoring system provided by an embodiment of the present invention;

[0034] Figure 4 A flowchart of a specific example of a valve tower water leakage monitoring system method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] An embodiment of the present invention provides a valve tower water leakage monitoring system, which can be applied to but not limited to scenarios of water leakage monitoring in high-voltage and ultra-high-voltage direct current converter valve halls. It can be applicable to any high-voltage and large-capacity power electronic converter valve hall using liquid cooling, and can also be applied to other closed high-voltage and large-capacity power electronic converter valve tower water leakage monitoring scenarios.

[0041] The embodiment of the present invention provides a valve tower water leakage monitoring system, such as Figure 1 As shown, the monitoring system includes: the laser radar array in the detection and perception unit monitors the data information of each valve tower in the valve hall in real time. The analysis and calculation unit generates the image information of the corresponding valve hall according to the data information of the corresponding laser radar, and at the same time, makes a preliminary prediction on whether the corresponding valve hall is leaking, wherein the number of analysis and calculation units corresponds to the number of laser radars in the detection and perception unit. At the same time, the generated image information of the valve hall is also stored in the data storage unit. When the analysis and calculation unit preliminarily determines that there is leakage in the valve hall, the judgment unit needs to cross-compare and analyze the image information of the valve hall within the preset range of the valve hall where leakage is preliminarily present, and comprehensively consider whether there is leakage in the valve hall. This is just an example, and it is not limited to this. In actual applications, the corresponding preset range is selected according to the actual situation. The monitoring blind spots caused by the structural shielding of the monitoring area are avoided, and the accuracy of monitoring is improved.

[0042] In the embodiment of the present invention, the detection and sensing unit includes: at least one group of laser radar arrays, the number of laser radar arrays is not limited here, and is selected accordingly according to actual conditions. In practice, the valve tower includes multiple valve layers (valve module layers), such as Figure 2 The figure shows a top view of three radars corresponding to one valve tower. For example, each valve tower corresponds to a group of laser radar arrays, or multiple valve towers correspond to a group of laser radar arrays, or each valve layer corresponds to a group of laser radar arrays, which is not limited here.

[0043] In the embodiment of the present invention, each laser radar array includes: a plurality of laser radars for real-time monitoring of data information of each valve tower in the valve hall. The resolution of the laser radar is selected according to the information of the water droplets to be monitored. The number and resolution of the laser radar are not limited here, and are selected accordingly according to the actual situation. The sampling frequency of the laser radar is determined by the shortest time T that the water droplets take to pass through the monitoring space distance. water The sampling frequency should be at least 1 / (n*T water ), where n should be no less than 2. The monitoring space distance is selected according to the actual situation and is not limited here. The resolution of the laser radar must be at least less than 1 / 2 of the typical leakage droplet diameter. The typical leakage droplet diameter can be determined based on factors such as the actual engineering converter valve water cooling pipeline connection form, pipeline size, and equipment tolerance to leakage, and is not limited here. The laser radar array is usually composed of but not limited to three or more radars.

[0044] In actual applications, the laser radar array is arranged on the walls around the converter valve hall. The laser radar is arranged on the wall of the valve hall, which can realize detection at a long distance, avoiding the impact of monitoring methods on the converter under high voltage, high current and high frequency working conditions. The laser radar array can be selected according to the direction of the primary electrical equipment and busbar in the actual valve hall. The radar can be arranged on the same side, on different sides, or on both sides. However, radars responsible for the same monitoring area must be arranged on the same horizontal line. Figure 3 The figure shows a side view of the radar arrangement on the converter valve tower.

[0045] At the same time, the radar must also consider the reflection of the laser light source by the metal wall of the valve hall during the layout process. If necessary, light wave absorbing materials must be pasted on the wall facing the radar. In the embodiment of the present invention, a group of laser radars are configured in the space area between each valve module layer, or only in the space between the last valve module layers, or they can be configured in a targeted manner as needed. The effective detection coverage range is larger than the projection area of ​​the converter valve. In order to ensure the accuracy of the detection data and avoid line of sight obstruction caused by the structure of the valve tower equipment, the number of radars usually set is greater than or equal to 3.

[0046] In an embodiment of the present invention, a plurality of analysis and calculation units are provided. The number of analysis and calculation units provided corresponds to the number of laser radars in the detection and perception unit, and is used to generate image information of the corresponding valve hall according to the data information of the corresponding laser radar. And based on the pre-judgment algorithm model, the valve hall area covered by the radar is judged. It is judged whether there is any image information of the corresponding valve hall at the current moment, and the abnormal situation includes: pre-judgment of valve hall leakage. The pre-judgment algorithm model is a common model in the prior art, and is not limited here. A model with corresponding functions is selected according to the actual situation. At the same time, the image information of the valve hall corresponding to all the laser radars is stored in the data storage unit.

[0047] The data information of each valve tower in the valve hall monitored by the laser radar in real time is point cloud data, and the image information corresponding to the current moment is generated by analyzing the point cloud data. The improved convolutional neural network model trained by the system is used to quickly identify and process the cross-sectional image of each valve tower, and make a preliminary judgment on whether there is valve hall leakage in the image information corresponding to the valve hall at the current moment. According to the time required for water droplets to pass through the monitoring height range, the point cloud data is sliced ​​in section. The analysis and calculation unit performs image recognition analysis on the point cloud data slices generated by different radars, and uses the trained improved convolutional neural network algorithm to achieve accurate recognition of pixel-level anomalies in the image.

[0048] In an embodiment of the present invention, the judgment unit is used to retrieve image information formed by other laser radars from the data storage unit when one of the several analysis and calculation units determines that the image information of the valve hall has an abnormality. Other laser radars refer to other laser radars in the detection and perception unit corresponding to the analysis and calculation unit with the abnormality. Among them, the monitoring space area covered by the retrieved image information includes an area predicted to be abnormal, and a cross-comparison is performed based on the preset algorithm model according to the multiple groups of image information retrieved to determine whether there is leakage in the valve hall area. The abnormal area is not limited here, and it is selected accordingly according to the actual situation. The preset algorithm model is a common model in the prior art and is not limited here. A trained deep learning algorithm can be used, combined with the actual radar monitoring angle, to cross-compare abnormal points to eliminate misjudgments caused by structural occlusions and other foreign objects.

[0049] In actual application, if the image processing analysis and recognition results in the analysis and calculation unit show no problems, the next section will continue to be analyzed and processed. If the image processing analysis results in the analysis and calculation unit show problems, the areas with problems will be marked, and the image information with problems will be sent to the judgment unit. At this time, the judgment unit retrieves the image information of the analysis and calculation units within the first preset range of the analysis and calculation units with problems at the current moment (the image information at this time is still the image information collected by different analysis and calculation units for the same valve hall), and judges whether the valve hall has leakage based on the preset algorithm model.

[0050] After identifying the anomaly, the analysis and calculation unit and the judgment unit also need to trace back and compare historical images, as well as track images for a period of time in the future. If regular dripping of foreign matter is found, it is determined that cooling water leakage has occurred.

[0051] The valve tower leakage monitoring system provided by the embodiment of the present invention also includes: an alarm display unit, which is used to display the alarm information of the abnormal valve hall location point, and alarm in a predetermined alarm form. When leakage occurs, the location point of the leakage will alarm in a predetermined alarm form, for example: it can be sent to the monitoring personnel's mobile phone via text message or in other alarm forms, and the alarm information is sent to the monitoring personnel, without limitation. The alarm information includes: the amount of water leakage in the valve hall, the leakage interval time and other information, so that the operating personnel can grasp the maintenance opportunity. This is just an example, not limited to this, and in practice, the corresponding alarm information is selected according to the actual situation.

[0052] The valve tower water leakage monitoring system provided by the embodiment of the present invention further includes: a wireless communication module for establishing a connection with the monitoring personnel and sending alarm information to the terminal device of the monitoring personnel, so that the operating personnel can call for inspection and report the alarm information at the same time to warn the operating personnel of the risk of dripping.

[0053] The valve tower water leakage monitoring system provided by the embodiment of the present invention also includes: an optical fiber transmission unit, which is used to complete the transmission of information between the transmission detection sensing unit, the analysis and calculation unit, the data storage unit, the judgment unit, the alarm display unit, and the wireless communication module according to the optical fiber transmission method. The accuracy of data transmission and the reliability of the monitoring and early warning system in the strong electromagnetic environment of the high-voltage direct current transmission valve hall are guaranteed.

[0054] In a specific embodiment, if one group of analysis and calculation units corresponding to several radars monitoring the same area finds an abnormality, the other radars and analysis and calculation units in this area group will also send data of the same time section to the judgment unit.

[0055] In the judgment unit, multiple section data of the same monitoring area are cross-compared, and the algorithm automatically eliminates the differences in abnormal identification results caused by spatial shielding and other reasons. If the judgment unit determines that there may be leakage after comparing and identifying multiple section data, the section data before the abnormal moment is retrieved for further comparison, and the abnormal phenomena in the subsequent time period are monitored, tracked and compared. If regular leakage and dripping are found, it can be determined that there is a water leakage problem in the projection area of ​​the valve tower. The judgment unit can also judge the leakage amount based on data such as the size of the water droplets and the time interval of dripping. At the same time, according to the abnormal position in the image at different angles, the spatial positioning of the water droplet dripping position is performed, which helps the main maintenance personnel to quickly locate. If the judgment unit determines that there is indeed an abnormality, the abnormal result will be passed to the result generation unit, and the judgment unit will generate alarm information according to a unified alarm notification format. If the cross-comprehensive evaluation unit determines that there is no abnormality, it means that the neural network of the image processing unit needs further optimization. The cross-comprehensive evaluation unit will then feed back the "misjudged" cross-sectional information to the corresponding analysis and calculation unit to facilitate the processing unit to perform self-learning and upgrading of the neural network.

[0056] It should be noted that the algorithms and models provided by various units of the present invention are mature algorithms in the prior art, and models obtained by combining the prior art.

[0057] A valve tower water leakage monitoring system provided by an embodiment of the present invention detects falling water droplets inside a valve hall where the atmospheric environmental conditions are relatively stable through the use of a laser radar installed in the valve hall, and sensitively monitors the falling water droplets from the valve hall through the cleaning and identification of radar feedback signals and the mining of historical signal patterns, thereby enabling real-time monitoring of valve tower water leakage, early detection of cooling water leakage inside the valve hall, and identification and detection of tiny targets in environments with poor visual conditions.

[0058] Example 2

[0059] The embodiment of the present invention provides a valve tower water leakage monitoring method, based on the valve tower water leakage monitoring system of embodiment 1, such as Figure 4 As shown, the control method includes the following steps:

[0060] Step S1: obtaining spatial status image information of each valve tower area in the monitoring valve hall in real time through a laser radar;

[0061] Step S2: judging whether the image information of the corresponding valve hall at the current moment exists based on the pre-judgment algorithm model, and the situation includes: pre-judgment of valve hall leakage;

[0062] Step S3: When one of the several analysis and calculation units determines that there is an abnormality in the image information of the valve hall, the image information formed by other laser radars is retrieved from the data storage unit, wherein the monitoring space area covered by the retrieved image information includes an area predicted to be abnormal, and according to the retrieved multiple groups of image information, a cross-comparison is performed based on a preset algorithm model to determine whether there is leakage in the valve hall area.

[0063] The valve tower water leakage monitoring method provided by the embodiment of the present invention further includes: generating an abnormal result of a leaking valve hall according to the water drop information of the image information of the leaking valve hall, wherein the abnormal result includes: the leakage amount of the valve hall and the location point of the abnormal valve hall. This is only an example and is not limited to this. In actual applications, corresponding abnormal results are generated according to actual conditions.

[0064] The valve tower water leakage monitoring method provided by the embodiment of the present invention further includes: the monitoring personnel receives the abnormal result of the leakage valve hall according to the predetermined alarm form. This is only an example and is not limited to this. In actual application, the corresponding predetermined alarm is selected according to the actual situation.

[0065] The valve tower leakage monitoring method provided by the embodiment of the present invention obtains the spatial status image information of each valve tower area in the monitoring valve hall in real time through the laser radar. Based on the pre-judgment algorithm model, it is judged whether there is a situation of image information corresponding to the valve hall at the current moment, and the situation includes: pre-judgment of valve hall leakage. When one of the several analysis and calculation units determines that there is an abnormality in the image information of the valve hall, the image information formed by other laser radars is retrieved from the data storage unit, wherein the monitoring space area covered by the retrieved image information includes the area predicted to be abnormal, and according to the retrieved multiple groups of image information, a cross-comparison is performed based on the preset algorithm model to determine whether there is leakage in the valve hall area. The method provided by the embodiment of the present invention assists the operating personnel in evaluating the degree of leakage, so that the leakage phenomenon in the converter valve can be discovered in time at an early stage, so as to reasonably arrange the maintenance work and improve the equipment operation reliability and system availability of ultra-high voltage direct current transmission.

[0066] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention.

Claims

1. A valve tower water leakage monitoring system, characterized in that: include: The detection and sensing unit includes: at least one group of laser radar arrays, wherein each group of the laser radar arrays includes: a plurality of laser radars for real-time monitoring of data information of each valve tower in the valve hall, and the laser radar sampling frequency is determined by the shortest time T taken by a water droplet to pass through the monitoring space distance. water The sampling frequency is at least 1 / (n*T water ), where n is not less than 2; The analyzing and calculating units are provided in a number, and the number of the analyzing and calculating units corresponds to the number of the laser radars in the detecting and sensing unit, and are used to generate image information of the corresponding valve hall according to the corresponding laser radar data information, and judge the valve hall area covered by the radar based on the pre-judgment algorithm model, and judge whether there is an abnormality in the image information of the corresponding valve hall at the current moment, and the abnormality includes: pre-judgment of valve hall leakage; A data storage unit, used to store image information of the valve hall corresponding to all the laser radars; The judgment unit, when one of the several analysis and calculation units determines that the image information of the valve hall is abnormal, retrieves the image information formed by other laser radars from the data storage unit, wherein the monitoring space area covered by the retrieved image information includes the area predicted to be abnormal, and according to the retrieved multiple groups of image information, a cross-comparison is performed based on a preset algorithm model to determine whether there is leakage in the valve hall area.

2. The valve tower water leakage monitoring system according to claim 1, characterized in that: Also includes: The alarm display unit is used to display the alarm information of the abnormal valve hall position point and to give an alarm in a predetermined alarm form.

3. The valve tower water leakage monitoring system according to claim 2, characterized in that: The laser radars in each group of the laser radar array in the detection and perception unit are arranged on the same horizontal line.

4. The valve tower water leakage monitoring system according to claim 3, characterized in that: Also includes: The wireless communication module is used to establish a connection with the monitoring personnel and send the alarm information to the terminal device of the monitoring personnel.

5. The valve tower water leakage monitoring system according to claim 4, characterized in that: Also includes: The optical fiber transmission unit is used to complete the transmission of information between the transmission detection and perception unit, the analysis and calculation unit, the data storage unit, the judgment unit, the alarm display unit, and the wireless communication module according to the optical fiber transmission method.

6. The valve tower water leakage monitoring system according to claim 5, characterized in that: The resolution of the laser radar is selected according to the information of the water droplets to be monitored.

7. A valve tower leakage monitoring method, characterized in that: Based on the valve tower water leakage monitoring system according to any one of claims 1 to 6, the method comprises: The spatial status image information of each valve tower area in the monitoring valve hall is obtained in real time through the laser radar; Judging whether the image information of the corresponding valve hall at the current moment exists based on the pre-judgment algorithm model, the situation includes: pre-judgment of valve hall leakage; When one of the several analysis and calculation units determines that there is an abnormality in the image information of the valve hall, the image information formed by other laser radars is retrieved from the data storage unit, wherein the monitoring space area covered by the retrieved image information includes an area predicted to be abnormal, and a cross-comparison is performed based on the preset algorithm model according to the retrieved multiple groups of image information to determine whether there is leakage in the valve hall area.

8. The valve tower water leakage monitoring method according to claim 7, characterized in that: Also includes: According to the water drop information of the image information of the leaking valve hall, an abnormal result of the leaking valve hall is generated, and the abnormal result includes: the leakage amount of the valve hall and the position point of the abnormal valve hall.

9. The valve tower water leakage monitoring method according to claim 8, characterized in that: Also includes: The monitoring personnel receive abnormal results of the existence of a leaking valve hall according to the predetermined alarm form.

10. The valve tower water leakage monitoring method according to claim 9, characterized in that: The sampling frequency of the laser radar on the valve hall is determined according to the shortest time taken by a water droplet to pass through a preset monitoring space distance.

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