Method, system and equipment for reducing false alarm of offshore wind power fire extinguishing system and storage medium

Abstract

The invention relates to the field of offshore wind power fire fighting, in particular to a method, a system and equipment for reducing false alarms of an offshore wind power fire fighting system and a storage medium. Comprising the following steps: acquiring a smoke signal of the wind turbine generator, and acquiring the temperature of the wind turbine generator when the smoke signal of the wind turbine generator is acquired; and obtaining the average temperature of the wind turbine generator set in each preset time, judging the average temperature in all the preset time, and when the average temperature in each latter preset time is not smaller than the average temperature in the former preset time and the smoke signal continuously increases to a preset threshold value in the preset time, sending out a fire signal. According to the method, the temperature change trend and the smoke change trend in the period of time are calculated, whether a fire occurs or not is judged according to the temperature change trend and the smoke change trend, the false alarm rate caused by abnormity of a single factor is remarkably reduced, and the accuracy and the reliability of fire early warning are improved.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind power fire protection, and in particular to a method, system, device and storage medium for reducing false alarms of offshore wind power fire protection systems. Background Art

[0002] A large amount of solid and liquid combustibles are used in offshore wind turbines, such as various types of lubricants, hydraulic oils, electrical components, wires and cables, nacelle covers and blade materials, etc. Among them, there are many types and quantities of combustible items in the cabin space of offshore wind turbines, and there are many machines and equipment and they are densely arranged, and the cabin space is narrow, which is most prone to fire; offshore wind turbines are generally built in sea areas. When a fire occurs in an offshore wind turbine, it is difficult to rescue it, and the wind turbine has rapid ventilation. Once a fire occurs in an offshore wind turbine, the fire will spread rapidly, causing huge economic losses; due to the special use environment of wind turbines, the reliability of the fire protection system is particularly important.

[0003] Most of the fire protection systems of offshore wind turbines in the prior art use detectors to monitor temperature, smoke, etc., and generate alarms or early warning signals when triggered, so that the fire protection system extinguishes the fire of the wind turbine. However, offshore wind turbines are located in a complex environment. Overheating of certain components in the offshore wind turbines can also trigger smoke alarms, which often cause maintenance alarms. Secondly, after a fire alarm occurs, it is mainly the staff who quickly arrive at the scene or verify it through monitoring, and report the situation on the scene to the firefighters, who cooperate with the staff to judge the fire situation. However, the fire situation is judged by people, which may easily lead to inaccurate judgment of the fire situation under certain circumstances, thereby making non-standard or wrong decisions, which may easily lead to a waste of fire protection resources. Summary of the invention

[0004] In response to the problems mentioned in the prior art, the present invention proposes a method, system, equipment and storage medium for reducing false alarms in offshore wind power fire protection systems. Smoke and temperature are obtained through a collection unit, and the temperature change trend is obtained by comparing the smoke and temperature. The change trend of the smoke is then judged, and whether a fire has occurred is judged based on the temperature change and the smoke change, thereby avoiding false alarms. At the same time, according to the change trend of the smoke and the on-site conditions, firefighters can be helped to determine the size of the fire and make the best fire judgment.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: The present invention provides a method for reducing false alarms of an offshore wind power fire protection system, comprising the following steps: S1, collecting smoke signals of wind turbines, and when the smoke signals of wind turbines are collected, collecting the temperature of the wind turbines; S2. Obtain the average temperature of the wind turbine within each preset time, and judge the average temperature within all preset times. When the average temperature within each subsequent preset time is not less than the average temperature within the previous preset time, and the smoke signal continues to increase to a preset threshold within the preset time, a fire signal is issued.

[0006] As a further improvement of the present invention, the average temperature within all preset time periods is determined, the temperature at each moment within the preset time period is obtained, and the temperatures at all moments are processed to obtain the average temperature within the preset time period; The average temperature of each subsequent preset time is compared with the average temperature of the previous preset time. If the average temperature of each subsequent preset time is greater than or equal to the average temperature of the previous preset time, it means that the temperature is continuously increasing.

[0007] As a further improvement of the present invention, when the temperature increases, the smoke signal within a preset time is identified, and the smoke signal within the preset time is compared with a preset threshold value to select to send out a fire signal. As a further improvement of the present invention, the fire condition signal includes a maintenance alarm, a minor fire alarm and a fire alarm.

[0008] As a further improvement of the present invention, the preset threshold includes a first threshold and a second threshold; When the smoke signal is less than the first threshold, a fire signal is issued as a maintenance alarm; When the smoke signal is greater than the first threshold and less than the second threshold, a fire signal is issued as a minor fire alarm; When the smoke signal is equal to or greater than the second threshold, a fire signal is issued as a serious fire alarm.

[0009] As a further improvement of the present invention, when obtaining the temperature at each moment within the preset time, the interval time between each adjacent moment is the same.

[0010] As a further improvement of the present invention, the preset time is 10 to 20 seconds.

[0011] A system for reducing false alarms of an offshore wind power fire protection system, comprising: A collection unit is used to collect smoke signals of the wind turbine generator set, and when the smoke signals of the wind turbine generator set are collected, the temperature of the wind turbine generator set is collected; A judgment unit is used to obtain the average temperature of the wind turbine in each preset time, and judge the average temperature in all preset times, when the average temperature in each subsequent preset time is not less than the average temperature in the previous preset time, and the smoke signal continues to increase to a preset threshold; Alarm unit, used to send out fire signals.

[0012] A device for reducing false alarms of an offshore wind power fire fighting system comprises a processor and a memory, wherein the processor implements the above-mentioned method for reducing false alarms of an offshore wind power fire fighting system when executing a computer program stored in the memory.

[0013] A computer-readable storage medium is used to store a computer program, wherein the computer program, when executed by a processor, implements the above-mentioned method for reducing false alarms of an offshore wind power fire protection system.

[0014] Compared with the prior art, the present invention has achieved the following technical effects: The present invention analyzes and judges the temperature and smoke collected within a preset time, calculates the temperature change trend and the smoke change trend within this period, and determines whether a fire has occurred based on the temperature change trend and the smoke change trend, which significantly reduces the false alarm rate caused by the abnormality of a single factor and improves the accuracy and reliability of fire warning. At the same time, when a fire is identified, the present invention can identify the actual situation on the scene based on the analysis of the smoke change trend, and output targeted fire signals for the fire by judging the smoke concentration and the threshold. Firefighters select appropriate fire-fighting devices and equipment based on the fire signal and take effective fire-fighting measures, thereby greatly reducing the overall pressure on the fire protection system and effectively reducing unnecessary consumption and waste of fire protection resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a flow chart of a method for reducing false alarms of an offshore wind power fire protection system according to the present invention; Figure 2 A connection diagram of a system for reducing false alarms of an offshore wind power fire protection system according to the present invention; Figure 3 The figure is a schematic diagram of the structure of a computer device according to the present invention.

[0016] Figure numerals: 1. control unit; 2. collection unit; 3. judgment unit; 4. alarm unit. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0018] Example 1 like Figure 1 As shown, the present invention provides a method for reducing false alarms of an offshore wind power fire protection system, comprising the following steps: S1, collecting smoke signals of wind turbines, and when the smoke signals of wind turbines are collected, collecting the temperature of the wind turbines; S2. Obtain the average temperature of the wind turbine within each preset time, and judge the average temperature within all preset times. When the average temperature within each subsequent preset time is not less than the average temperature within the previous preset time, and the smoke signal continues to increase to a preset threshold within the preset time, a fire signal is issued.

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments: In the present invention, firstly, the electrical components, wires and cables, generator boxes, gear systems, brake systems, etc. in the offshore wind turbine generator set are installed with a collection unit 2, and the above-mentioned parts that are prone to fire are identified through the collection unit 2. When the smoke signal is collected, the collection unit 2 starts to collect the temperature, and determines whether a fire has occurred by judging the trend of the temperature change, so as to avoid maintenance alarms caused by temperature fluctuations due to abnormal conditions.

[0020] The average temperature of all preset time is judged, the temperature of each moment in the preset time is obtained, the temperature of all moments is processed, and the average temperature of the preset time is obtained; the average temperature of each subsequent preset time is compared with the average temperature of the previous preset time. If the average temperature of each subsequent preset time is greater than or equal to the average temperature of the previous preset time, it means that the temperature is increasing. When obtaining the temperature of each moment in the preset time, the interval time of each adjacent moment is the same.

[0021] In the embodiment, assuming that the preset time is 10S, each moment is set to 1S, and there are ten moments in a preset time, which are recorded as T0-T9 respectively. The temperatures of the ten moments are added together to calculate the average temperature of the first preset time. Then, the average temperature of the second preset time is calculated according to the above method. ..., calculate the average temperature within multiple preset times until all temperature values ​​are compared. If the comparison is satisfied, < < …< , it means that the temperature is increasing. At this time, it is necessary to compare the smoke change trend to judge. In this comparison method, the average temperature at the preset time is the average temperature of all moments each time. Therefore, when compared with the average temperature of the next preset time, the obtained temperature change trend is more accurate. If the fire alarm is triggered, the temperature must show an overall upward trend, avoiding the detector maintenance alarm caused by the continuous unstable temperature fluctuations caused by abnormal conditions during this period.

[0022] When the temperature increases, the smoke signal within the preset time is identified, and the smoke signal within the preset time is compared with the preset threshold value to select the fire signal. In the embodiment, the smoke alarm is used to detect the change of smoke, and the change trend of smoke is determined by identifying the change of smoke concentration; in the embodiment, the smoke alarm preferably uses the photoelectric effect to detect smoke. The smoke sensor usually contains a light source, an optical element and a photodetector (such as a photodiode or a phototransistor). When smoke enters the detection area, it will scatter light and change the propagation path and intensity of light. The scattered light is focused by the optical element onto the photodetector, causing the current of the photodetector to change; by detecting the change of this photocurrent, the smoke sensor can determine whether there is smoke, estimate the concentration of smoke, set a threshold for the smoke concentration, and determine whether a fire has occurred by judging the smoke concentration on the premise that the temperature is on an upward trend.

[0023] The fire signal includes a maintenance alarm, a minor fire alarm, and a fire alarm. The preset threshold includes a first threshold and a second threshold. In the embodiment, the first threshold and the second threshold are set for the smoke concentration. The following are several situations with different smoke concentrations: The first is that when the smoke signal is less than the first threshold, a fire signal is issued as a maintenance alarm; at this time, although the temperature is on an upward trend, since the smoke concentration does not reach the first threshold, it means that overheating and smoke may be caused by the circuit current, and the probability of fire is not high. Therefore, the alarm unit 4 issues a maintenance alarm, and the staff goes to the site for inspection and processing without the need for firefighters.

[0024] The second is when the smoke signal is greater than the first threshold and less than the second threshold, a fire signal is issued as a minor fire alarm; at this time, the temperature is on an upward trend, and since the smoke concentration exceeds the first threshold, it indicates that overheating and smoke may be caused by the circuit current. Since the smoke concentration is already very high, there are signs of a fire, so the alarm unit 4 issues a minor fire alarm to notify firefighters to go to the scene for processing. When handling the fire, they can carry dry powder fire extinguishers, gas fire extinguishers, etc. to extinguish the fire.

[0025] The third is that when the smoke signal is equal to or greater than the second threshold, a fire signal is issued as a major fire alarm. At this time, the temperature is on an upward trend. Since the smoke concentration exceeds the second threshold, it means that overheating and smoke may be caused by the circuit current. The smoke concentration reaches the scale of a fire, and a fire has occurred. Therefore, the alarm unit 4 issues a major fire alarm to notify firefighters to go to the scene for processing. Firefighting facilities can be used to extinguish the fire, such as turbofan guns, fine water mist devices, etc.

[0026] The preset time is 10 to 20 seconds. In the embodiment, the preset time is 10 to 20 seconds, preferably 10 seconds, and the preset time can be adjusted according to different actual use scenarios.

[0027] Example 2 Based on the same inventive concept, an embodiment of the present invention also provides a system for reducing false alarms of offshore wind power fire fighting systems. Since the principle of solving the problem by the system for reducing false alarms of offshore wind power fire fighting systems is similar to the aforementioned method for reducing false alarms of offshore wind power fire fighting systems, the implementation of the system for reducing false alarms of offshore wind power fire fighting systems can refer to the implementation of the method for reducing false alarms of offshore wind power fire fighting systems, and the repeated parts will not be repeated.

[0028] In specific implementation, the system for reducing false alarms of offshore wind power fire protection systems provided by the embodiment of the present invention specifically includes: a collection unit 2, which is used to collect smoke signals of wind turbines, and when the smoke signals of wind turbines are collected, the temperature of the wind turbines is collected; The judgment unit 3 is used to obtain the average temperature of the wind turbine in each preset time, and judge the average temperature in all preset times. When the average temperature in each subsequent preset time is not less than the average temperature in the previous preset time, and the smoke signal continues to increase to a preset threshold, a fire signal is issued.

[0029] In the embodiment of the present invention, the acquisition unit 2 specifically includes a smoke sensor and a temperature sensor, such as Figure 2 As shown, the smoke sensor can detect in real time whether there is smoke in the current environment, and the temperature sensor is normally in standby mode. When the smoke sensor detects a smoke signal, the temperature sensor is triggered to work.

[0030] Figure 2 As shown, this embodiment also includes a control unit 1, wherein the control module is connected to the smoke sensor and the temperature sensor respectively for connecting to transmit detection signals and data.

[0031] The judgment unit 3 is connected to the control unit 1, and the control unit 1 transmits data to the judgment unit 3. The judgment unit 3 is used to judge the collected temperature data and smoke data to obtain the temperature change trend and the smoke change trend, so as to judge whether a fire occurs, thereby reducing the occurrence of maintenance alarms.

[0032] The embodiment further includes an alarm unit 4, and the judgment unit 3 selects the alarm unit 4 to send out a suitable fire signal according to the temperature change trend and the smoke change trend.

[0033] Accordingly, an embodiment of the present invention also provides an electronic device for reducing the fire protection system of offshore wind power generation, such as Figure 3As shown, it includes a processor 101 and a memory 102, wherein the processor 101 and the memory 102 can be connected via a bus or other means, and the processor 101 implements a turbine blade improvement verification method provided by an embodiment of the present invention when executing a computer program stored in the memory 102. In this embodiment, the processor 101 can be a central processing unit. The processor 101 can also be other general-purpose processors, digital signal processor application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc., or a combination of the above-mentioned various types of chips.

[0034] The memory 102, as a non-transient computer-readable storage medium, can be used to store non-transient software programs, non-transient computer executable programs and modules, such as the program instructions / modules corresponding to the methods in the above method embodiments. The processor 101 executes the processor by running the non-transient software programs, instructions and modules stored in the memory 102. In some embodiments, the memory 102 may optionally include a memory remotely arranged relative to the processor 101, and these remote memories may be connected to the processor 101 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0035] One or more modules are stored in the memory 102, and when executed by the processor 101, the method in the above method embodiment is executed.

[0036] For more specific processes of the above method, please refer to the corresponding contents disclosed in the aforementioned embodiments, which will not be repeated here.

[0037] Accordingly, an embodiment of the present invention further provides a computer-readable storage medium for storing a computer program, wherein when the computer program is executed by a processor, the method for reducing false alarms of an offshore wind power fire protection system as provided in an embodiment of the present invention is implemented.

[0038] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the systems, devices, and storage media disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part.

[0039] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0040] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0041] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0042] The above is a detailed introduction to a method, system, device and storage medium for reducing false alarms of offshore wind power fire protection systems provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for reducing false alarms in offshore wind power fire protection systems, characterized in that: The following steps are involved: S1, collecting smoke signals of wind turbines, and when the smoke signals of wind turbines are collected, collecting the temperature of the wind turbines; S2. Obtain the average temperature of the wind turbine within each preset time, and judge the average temperature within all preset times. When the average temperature within each subsequent preset time is not less than the average temperature within the previous preset time, and the smoke signal continues to increase to a preset threshold within the preset time, a fire signal is issued.

2. A method for reducing false alarms of offshore wind power fire protection systems according to claim 1, characterized in that: Determine the average temperature within all preset times, obtain the temperature at each moment within the preset time, process the temperatures at all moments, and obtain the average temperature within the preset time; The average temperature of each subsequent preset time is compared with the average temperature of the previous preset time. If the average temperature of each subsequent preset time is greater than or equal to the average temperature of the previous preset time, it means that the temperature is continuously increasing.

3. A method for reducing false alarms of offshore wind power fire protection systems according to claim 2, characterized in that: When the temperature increases, the smoke signal within the preset time is identified, and the smoke signal within the preset time is compared with the preset threshold to select to send out a fire signal.

4. A method for reducing false alarms of offshore wind power fire protection systems according to claim 3, characterized in that: The fire situation signals include maintenance alarm, minor fire alarm and fire alarm.

5. A method for reducing false alarms of offshore wind power fire protection systems according to claim 3, characterized in that: The preset threshold includes a first threshold and a second threshold; When the smoke signal is less than the first threshold, a fire signal is issued as a maintenance alarm; When the smoke signal is greater than the first threshold and less than the second threshold, a fire signal is issued as a minor fire alarm; When the smoke signal is equal to or greater than the second threshold, a fire signal is issued as a serious fire alarm.

6. A method for reducing false alarms of offshore wind power fire protection systems according to claim 2, characterized in that: When obtaining the temperature at each moment within the preset time, the interval time between each adjacent moment is the same.

7. A method for reducing false alarms of offshore wind power fire protection systems according to claim 1, characterized in that: The preset time is 10 to 20 seconds.

8. A system for reducing false alarms in offshore wind power fire protection systems, characterized in that: include: A collection unit is used to collect smoke signals of the wind turbine generator set, and when the smoke signals of the wind turbine generator set are collected, the temperature of the wind turbine generator set is collected; A judgment unit is used to obtain the average temperature of the wind turbine in each preset time, and judge the average temperature in all preset times, when the average temperature in each subsequent preset time is not less than the average temperature in the previous preset time, and the smoke signal continues to increase to a preset threshold; Alarm unit, used to send out fire signals.

9. A device for reducing false alarms in offshore wind power fire protection systems, characterized in that: It comprises a processor and a memory, wherein when the processor executes the computer program stored in the memory, the method for reducing false alarms of an offshore wind power fire fighting system as claimed in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein when the computer program is executed by a processor, the method for reducing false alarms of an offshore wind power fire protection system as described in any one of claims 1 to 7 is implemented.

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