A photovoltaic box-type substation, monitoring method and storage medium thereof

Abstract

The present application relates to the field of photovoltaic substations, and in particular to a photovoltaic box-type substation, a monitoring method and a storage medium thereof, which includes a box body, electrical equipment is placed in the box body, a plurality of fire extinguishing pipes are arranged in the box body, the fire extinguishing pipes are clamped and fixed on the outer wall of the electrical equipment or the inner wall of the electrical equipment in the box body, and also includes a temperature detection module, an electric energy detection module, an image recognition module, a data processing module and a trigger module, the trigger module is arranged on the fire extinguishing pipe, the temperature detection module is used to detect and obtain temperature detection data and output it, the electric energy detection module is used to detect and obtain electric energy detection data and output it, the image recognition module is used to detect and obtain image recognition data and output it, the data processing module is used to receive data, and after processing and calculating the data, a processing signal is obtained and output to the trigger module, and the trigger module triggers the fire extinguishing pipe. The present application has the effect of improving the protection effect.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic substations, and in particular to a photovoltaic box-type substation, a monitoring method and a storage medium thereof. Background Art

[0002] With the development of power electronics technology and the continuous in-depth research of photovoltaic systems, the photovoltaic industry has achieved multi-faceted development with the continuous advancement of related technologies, and the advantages of photovoltaic box-type substations in photovoltaic grid-connected power generation and other fields have become increasingly obvious. Based on development goals and modern information technology, the specific application of intelligent box-type substations has been analyzed in many aspects, which generally include monitoring, remote control, protection and communication functions.

[0003] However, since multiple electrical equipment such as electrical cabinets and transformers can be installed in a box-type substation, the fire extinguishing devices used for safety protection are still devices such as fire extinguishing pipes. Only when the flame burns the fire extinguishing pipe will the fire extinguishing pipe be triggered to spray fire extinguishing gases such as perfluorohexanone. Many electrical equipment are very close to each other. Once an electrical equipment catches fire, it is very easy to cause damage or even ignite other nearby electrical equipment. At this time, if the fire extinguishing pipe is triggered again, chain damage to the electrical equipment has occurred, which will greatly affect the transmission of electricity. Summary of the invention

[0004] In order to improve the problem that the high integration of photovoltaic box-type substations makes it difficult to trigger fire extinguishing devices in time to ensure safety, the present application provides a photovoltaic box-type substation, a monitoring method and a storage medium thereof.

[0005] The present application provides a photovoltaic box-type substation, which adopts the following technical solution:

[0006] A photovoltaic box-type substation comprises a box body, in which electrical equipment is placed, and a plurality of fire-extinguishing pipes are arranged in the box body, and the fire-extinguishing pipes are clamped and fixed on the outer wall of the electrical equipment or the inner wall of the electrical equipment in the box body, and further comprises a temperature detection module, an electric energy detection module, an image recognition module, a data processing module and a trigger module, wherein the trigger module is arranged on the fire-extinguishing pipe, the temperature detection module is used to detect the temperature of the electrical equipment, obtain temperature detection data and output it, the electric energy detection module is used to detect the voltage and current of the electrical equipment, obtain electric energy detection data and output it, the image recognition module is used to detect the image in the box body or the electrical equipment, obtain image recognition data and output it, the data processing module is used to receive the temperature detection data, the electric energy detection data and the image recognition data, and after processing and calculating the data, obtain a processing signal and output it to the trigger module, and the trigger module triggers the fire-extinguishing pipe.

[0007] By adopting the above technical solution, the pre-high temperature conditions of whether a fire will occur can be automatically judged in advance through the detection and identification of temperature, current, voltage and image, and then the fire extinguishing pipe is actively triggered by the trigger module to cool down the device, so that the device is immediately sprayed with cooling water and isolated from the air when it is about to catch fire, so that the device is cooled down. Even if the purpose of cooling down is not achieved, it will not burn because the air has been isolated in advance and there are no oxidation and combustion conditions, thereby achieving the purpose of flame retardancy, and protecting other electrical equipment and devices in advance so that other devices can work normally and transmit electrical energy.

[0008] Optionally, the trigger module includes a heating element for heating and raising the temperature, the heating element is in contact with the fire extinguishing pipe, and the fire extinguishing pipe is connected to a pressure detection module, the pressure detection module is used to detect the pressure inside the fire extinguishing pipe or the pressure inside the electrical equipment, obtain pressure detection data and output it to the data processing module.

[0009] By adopting the above technical solution, the pressure detection module is used to determine whether the fire extinguishing pipe can be triggered normally, and then the normal fire extinguishing pipe is actively and quickly heated and triggered by the heating element.

[0010] Optionally, the trigger module also includes a plurality of heat-conducting needles, the number of the heating elements is multiple, the multiple heating elements are cross-arranged to form a heating network, the heating network cover is arranged on the fire extinguishing pipe, the heat-conducting needles are arranged at the intersection positions of the multiple heating elements, and the ends of the heat-conducting needles are in contact with the outer wall of the fire extinguishing pipe.

[0011] By adopting the above technical solution, the fire extinguishing pipe is heated by the heat-conducting needles. After one heat-conducting part is heated up, all the heat-conducting needles on this heat-conducting part will be heated up and transfer the temperature to the fire extinguishing pipe. However, there is only one heat-conducting needle at the staggered position of two heat-conducting parts that are heated up at the same time. The temperature of this heat-conducting needle is much higher than that of other heat-conducting needles, so that the heat-conducting needle here can partially melt the outer wall of the fire extinguishing pipe, making the outer wall of the fire extinguishing pipe here thinner, while the other heat-conducting needles only play the role of heating the gas temperature inside the fire extinguishing pipe, accelerating the triggering speed of the fire extinguishing pipe, and spraying it out from the thinnest place, thereby achieving the effect of specifying the spraying position.

[0012] The present application provides a monitoring method for a photovoltaic box-type substation, which adopts the following technical solution:

[0013] A monitoring method for a photovoltaic box-type substation, comprising:

[0014] Acquiring the power detection data, the temperature detection data and the timing data, wherein the processing signal includes an active emergency cooling signal;

[0015] Determining operating power data through the electric energy detection data and a preset electrical equipment resistance threshold;

[0016] Determine temperature trend data through the temperature detection data and the timing data;

[0017] Determining temperature warning data through the temperature trend data, a preset fire warning threshold and a preset trigger time data;

[0018] Determine and output the temperature warning holding data through the electric energy detection data, the timing data and the temperature warning data;

[0019] The active emergency cooling data is determined by the temperature warning maintenance data, the operating power data and a preset overload threshold.

[0020] Determine trigger coordinate data through the temperature warning data and the electrical equipment resistance threshold;

[0021] An active emergency cooling signal is determined and outputted through the trigger coordinate data and the active emergency cooling data.

[0022] By adopting the above technical solution, it is possible to automatically determine where the overload temperature is too high and is about to catch fire based on the temperature, current and voltage, and control the corresponding fire extinguishing pipe to trigger the spray toward the specified position, thereby achieving automatic cooling and air isolation, improving the degree of intelligence and being more automatic.

[0023] Optional, including:

[0024] The processing signal also includes a delayed preparation signal and a preparation trigger signal to obtain the pressure detection data;

[0025] Determine the preparation coordinate data by using the trigger coordinate data and a preset preparation quantity threshold;

[0026] Determine and output a delayed preparation signal through the preparation coordinate data, a preset delay trigger threshold and the active emergency cooling data;

[0027] Determining a trigger signal through the pressure detection data, the timing data and a preset trigger release threshold;

[0028] Determine and output a confirmation signal through the trigger signal, the delayed preparation signal, and the active emergency cooling signal;

[0029] Acquire the temperature trend data again through the confirmation signal;

[0030] The determination of a preparation trigger signal is performed through the temperature trend data, the timing data and the fire warning threshold and the output is performed.

[0031] By adopting the above technical solution, more fire extinguishing pipes will be triggered additionally, so that more fire extinguishing pipes are in a critical state. Once the previously triggered fire extinguishing pipe fails to achieve the desired effect, the spray will continue to be triggered after a delay, so that the device at the designated position will be cooled down again and kept in an air-isolated state, thereby improving the protective effect.

[0032] Optional, including:

[0033] Determine and output a heating wire start signal based on the trigger coordinate data, the active emergency cooling signal and a preset heating wire threshold;

[0034] Determine and output the heating wire delay start signal through the preparation coordinate data, the delayed preparation signal and the heating wire threshold;

[0035] Determine and output a critical holding signal through the heating wire delay start signal;

[0036] The heating wire start signal is determined and outputted through the critical hold signal and the preparation trigger signal.

[0037] By adopting the above technical solution, the control of the heat conducting needle is more precise.

[0038] Optional, including:

[0039] Acquiring the image recognition data;

[0040] determining image change data using the image recognition data and the timing data;

[0041] Determining open flame data through the image change data and a preset flame change threshold;

[0042] Determining smoldering data by using the image change data and a preset distortion speed threshold;

[0043] Determine fire extinguishing data through the open flame data, the smoldering data and the temperature trend data;

[0044] The heating wire start signal is determined and outputted according to the fire extinguishing data and the heating wire threshold.

[0045] By adopting the above technical solution, although the temperature, current and voltage detection are accurate, the detection range is too small. If the range of temperature, current and voltage detection is to be expanded, more detection instruments are required, which is too costly. Image recognition can be used to compensate for the limitations of temperature, current and voltage detection and further improve the protection effect.

[0046] The present application provides a computer-readable storage medium, which adopts the following technical solution:

[0047] A computer-readable storage medium stores a computer program that can be loaded and executed by a processor and is a method for monitoring a photovoltaic box-type substation.

[0048] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0049] In summary, the present application includes at least one of the following beneficial technical effects:

[0050] When the device is about to catch fire, it will be immediately cooled down by spraying and isolated from the air, so that the device can be cooled down. Even if the purpose of cooling down is not achieved, it will not burn because there are no oxidation and combustion conditions due to the air isolation in advance, thus achieving the purpose of flame retardancy. Other electrical equipment and devices are protected in advance, so that other devices can work normally and transmit electrical energy.

[0051] Speed ​​up the triggering speed of the fire extinguishing pipe and achieve the effect of designated spraying position.

[0052] Realize automatic cooling and air isolation, improve intelligence and be more automatic. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the overall structure of a photovoltaic box-type substation in an embodiment of the present application.

[0054] Figure 2 It is a structural diagram showing the fire extinguishing pipe after the box is opened.

[0055] Figure 3 It is a module schematic diagram of a photovoltaic box-type substation in an embodiment of the present application.

[0056] Figure 4 It is a schematic diagram of the structure of the highlight trigger module.

[0057] Figure 5 It is a flow chart of a monitoring method for a photovoltaic box-type substation in an embodiment of the present application.

[0058] Figure 6 It is a flowchart diagram of step S2 to step S26.

[0059] Figure 7 It is a flowchart diagram of step S3 to step S33.

[0060] Figure 8 It is a flowchart diagram of step S4 to step S45.

[0061] Explanation of the accompanying drawings: 1. Box body; 11. Fire extinguishing pipe; 2. Temperature detection module; 21. Electric energy detection module; 22. Image recognition module; 23. Data processing module; 24. Pressure detection module; 3. Trigger module; 31. Heating element; 32. Heat conducting needle; 33. Heating network. DETAILED DESCRIPTION

[0062] The following is combined with Figure 1-8 This application is described in further detail.

[0063] The present application embodiment discloses a photovoltaic box-type substation. Figure 1 and Figure 2 The photovoltaic box-type substation includes a box body 1, and multiple electrical equipment are placed in the box body 1. The electrical equipment in the box body 1 includes various electrical cabinets, transformers, etc. A plurality of fire extinguishing pipes 11 are also installed in the box body 1. The fire extinguishing pipe 11 uses, for example, a fire extinguishing pipe 11 that sprays compressed perfluorohexanone gas. The fire extinguishing pipe 11 can be snap-fitted and fixed by magnetic attraction or hooks or other methods. The fire extinguishing pipe 11 is snap-fitted and fixed on the inner wall of the box body 1 or on the outer wall of the electrical equipment in the box body 1 or on the inner wall of the electrical equipment, for example, it is installed on the inner wall of the electrical cabinet, facing the direction of various electrical equipment in the electrical cabinet, such as circuit breakers, electric energy meters, etc., and for transformers, they are installed on the inner wall of the box body 1 facing the transformer.

[0064] Reference Figure 2 and Figure 3 , also includes a temperature detection module 2, an electric energy detection module 21, an image recognition module 22, a data processing module 23, a pressure detection module 24 and a trigger module 3. The trigger module 3 is installed on the fire extinguishing pipe 11. The temperature detection module 2 can use a temperature sensor, and the temperature detection module 2 is installed on the electrical equipment. Multiple temperature detection modules 2 can be installed on the same electrical equipment. The temperature detection module 2 is used to detect the temperature of the electrical equipment, obtain temperature detection data and output it.

[0065] Reference Figure 2 and Figure 3 The electric energy detection module 21 can be a voltmeter or an ammeter or an electric energy meter with the function of detecting current and voltage at the same time. The electric energy detection module 21 is used to detect the voltage and current of the electrical equipment, obtain the electric energy detection data and output it, and the electric energy detection data includes the voltage and current data. The image recognition module 22 can be a camera, and the number is multiple. The image recognition module 22 using a global eye or cameras in multiple corners is installed at the center of the top wall inside the box 1. The image recognition module 22 of a micro camera is installed in the electrical cabinet. This micro camera faces the components that are prone to failure, such as circuit breakers, etc. The image recognition module 22 is used to detect the image in the box 1 or the electrical equipment, obtain the image recognition data and output it.

[0066] Reference Figure 2 and Figure 3 The data processing module 23 includes a processor and a database. The database is used to store various threshold data, such as electrical equipment resistance threshold, fire warning threshold and other threshold data. The processor is used to receive temperature detection data, power detection data, image recognition data and pressure detection data, and call the corresponding threshold data from the database. After calculating and processing the data, a processing signal is obtained and output to the trigger module 3, and the trigger module 3 triggers the fire extinguishing pipe 11.

[0067] Reference Figure 2 and Figure 3 and Figure 4 A pressure detection module 24 is connected to the fire extinguishing pipe 11. The pressure detection module 24 can be a pressure gauge. The pressure detection module 24 is connected to the metal part at the end of the fire extinguishing pipe 11 and is sealed and extended into the fire extinguishing pipe 11. The pressure detection module 24 is used to detect the pressure in the fire extinguishing pipe 11 or the pressure in the electrical equipment, obtain pressure detection data and output it to the data processing module 23.

[0068] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0069] Reference Figure 4 The trigger module 3 includes a plurality of heating elements 31 for heating and a plurality of heat-conducting needles 32. The heating elements 31 may be fast-heating devices such as heating resistors. The plurality of heating elements 31 are cross-arranged to form a heating network 33. For example, the plurality of heating elements 31 are distributed horizontally, and the plurality of heating elements 31 are distributed vertically. However, the horizontally distributed heating elements 31 are not in direct contact with the vertically distributed heating elements 31. Instead, the heat-conducting needles 32 are fixedly connected at staggered positions. The extension direction of the heat-conducting needles 32 is perpendicular to the extension direction of the heating elements 31. The horizontally distributed heating elements 31 and the vertically distributed heating elements 31 are distributed and fixed on the heat-conducting needles 32 along the extension direction of the heat-conducting needles 32. The heat-conducting needles 32 are made of insulating materials with high thermal conductivity. The heating network 33 is covered on the fire extinguishing pipe 11, and the heating elements 31 are in contact with the outer wall of the fire extinguishing pipe 11 through the heat-conducting needles 32.

[0070] The implementation principle of a photovoltaic box-type substation in an embodiment of the present application is as follows: when an overload occurs inside an electrical device and a fire is about to occur, the increased temperature is detected by the temperature detection module 2, and the overloaded current and voltage are detected by the electric energy detection module 21, and then the processor controls the heating element 31 to generate heat, and the heat is transferred to the fire extinguishing pipe 11 through the heat conducting needle 32, and at the same time, a small amount of melting occurs at the position where the outer wall of the fire extinguishing pipe 11 is resisted by the heat conducting needle 32, so that the outer wall of the fire extinguishing pipe 11 at this point becomes slightly thinner, so that the gas inside the fire extinguishing pipe 11 is expanded by the high temperature and then ejected from here, thereby accurately spraying to the designated position, cooling and isolating the medium to extinguish the fire.

[0071] The present application embodiment discloses a monitoring method for a photovoltaic box-type substation. Figure 5 , the monitoring method of photovoltaic box-type substation includes the following steps:

[0072] S1. Acquire power detection data, temperature detection data and timing data, and process signals including active emergency cooling signals;

[0073] S11, determining operating power data through electric energy detection data and a preset electrical equipment resistance threshold;

[0074] S12, determining temperature trend data through temperature detection data and timing data;

[0075] S13, determining temperature warning data according to temperature trend data, a preset fire warning threshold and preset trigger time data;

[0076] S14, determining the temperature warning holding data through the power detection data, the timing data and the temperature warning data and outputting it;

[0077] S15. Determine active emergency cooling data through temperature warning maintenance data, operating power data and a preset overload threshold.

[0078] S16, determining trigger coordinate data through temperature warning data and electrical equipment resistance threshold;

[0079] S17, determining and outputting an active emergency cooling signal through the triggering coordinate data and the active emergency cooling data.

[0080] In detail: the electric energy detection data includes current and voltage data. The resistance threshold of the electrical equipment is the internal resistance threshold of the detected object. For example, if the circuit breaker in the electrical cabinet is detected, the resistance threshold of the electrical equipment is the internal resistance of the circuit breaker. If a certain circuit is detected, the resistance threshold of the electrical equipment is the overall resistance of this circuit. The power data of this resistance is obtained by combining the current and voltage data, which can usually be used as the power of heating, that is, the operating power data. The temperature detection data obtained by the detection is combined with time to obtain a temperature-time curve, and the tangent of this curve is the acceleration of the temperature. According to this acceleration, the temperature change trend can be obtained. For example, if the timing data is 1min, the temperature detection data is 40℃, the timing data is 1min10s, the temperature detection data is 45℃, the timing data is 1min20s, and the temperature detection data is 55℃, then the temperature change speeds of the two times are 5℃ / (10s) and 10℃ / (10s), and the acceleration of the temperature change is Therefore, it can be predicted that the temperature of 1min30s is 70℃, which is the temperature trend data; the fire warning threshold is the warning temperature before the fire. For example, after the temperature of this device exceeds 110℃, it will heat up and catch fire uncontrollably quickly, so 110℃ is the fire warning threshold. The trigger time data is the time required for the trigger module 3 to trigger the fire extinguishing pipe 11. If it takes 5s for the trigger module 3 to heat and trigger the fire extinguishing pipe 11, the trigger time data is 5s. According to the temperature trend data and the fire warning threshold, it can be predicted that the current temperature has reached the fire warning threshold. The time required, if this time is less than the trigger time data, then the output indicates that the temperature warning data of the fire extinguishing pipe 11 is triggered, and then the electric energy detection data is calculated in combination with the time to determine whether the current and voltage have changed. For example, if the overload protection is triggered, the circuit will be disconnected, and the current will return to zero. At this time, the temperature warning holding data not triggering the fire extinguishing pipe 11 will be output. However, if the current and voltage are not reduced, and the temperature warning data indicates that the fire extinguishing pipe 11 needs to be triggered, then the output indicates that the temperature warning holding data of the fire extinguishing pipe 11 is triggered, and the heating is controlled by the temperature warning holding data. The component 31 raises the temperature to the temperature that is about to trigger the fire extinguishing pipe 11 but does not trigger it. For example, if the fire extinguishing pipe 11 is triggered at 150°C, then the temperature warning holding data controls the heating component 31 to rise to 120°C. At this time, there is almost no melting effect on the outer wall of the fire extinguishing pipe 11. If the operating power data remains unchanged and exceeds the overload threshold, it is judged that the resistor is still in an overload state and continues to generate excessive heat. If the temperature warning holding data is received, the active emergency cooling data is output to control the heating component 31 to quickly rise to the highest temperature, for example, quickly rise to 400°C, so that the original 120°C can quickly exceed the triggering temperature of the fire extinguishing pipe 11, and at the same time, the high temperature melts part of the outer wall to reduce the thickness, so that the fire extinguishing pipe 11 erupts from here; and which heating component 31 is conductively heated, the corresponding trigger coordinate data is obtained according to which electrical equipment or which device in the electrical equipment corresponds to the corresponding electrical equipment resistance threshold in the temperature warning data, and then the active emergency cooling signal is output through the active emergency cooling data for control, that is, the heating component 31 on the fire extinguishing pipe 11 at the corresponding position is controlled according to the trigger coordinate data.

[0081] Reference Figure 6 , further comprising the following steps:

[0082] S2, processing signals also include delayed preparation signals and preparation trigger signals to obtain pressure detection data;

[0083] S21, determining the preparation coordinate data by comparing the trigger coordinate data with a preset preparation quantity threshold;

[0084] S22, determining and outputting a delayed preparation signal by preparing coordinate data, a preset delay trigger threshold and active emergency cooling data;

[0085] S23, determining a trigger signal through pressure detection data, timing data and a preset trigger release threshold;

[0086] S24, determining a confirmation signal through a trigger signal, a delayed preparation signal, and an active emergency cooling signal and outputting the confirmation signal;

[0087] S25, obtaining temperature trend data again through a confirmation signal;

[0088] S26. Determine the preparation trigger signal through the temperature trend data, timing data and fire warning threshold and output it.

[0089] In detail: if the preparation quantity threshold is set to 2, then according to the trigger coordinate data, the coordinates of the two fire extinguishing pipes 11 adjacent to the fire extinguishing pipe 11 at the position corresponding to the trigger coordinate data are output, which is the preparation coordinate data. These fire extinguishing pipes 11 are prepared fire extinguishing pipes 11, and the fire extinguishing pipe 11 corresponding to the preparation coordinate data reaches the critical temperature according to the temperature warning holding data but is not triggered. If the delayed trigger threshold is set to 5s, it will not be triggered within 5s after the active emergency cooling data is output, and the delayed preparation signal is output at the same time, indicating that the active emergency cooling data has been output at this time, but the other adjacent fire extinguishing pipes 11 are not triggered due to the delay. The trigger release threshold represents the normal pressure of the fire extinguishing pipe 11 when it is not triggered. At this time, the pressure detection data corresponding to the adjacent fire extinguishing pipe 11 and the trigger release threshold are used to determine whether the fire extinguishing pipe 11 is normal. If the pressure detection data If the pressure is lower than the trigger release threshold, it means that the fire extinguishing pipe 11 may not be able to trigger the spray fire extinguishing. At this time, the preparation coordinate data will be recalculated. If the pressure detection data is greater than the trigger release threshold, it means that the fire extinguishing pipe 11 is normal. At this time, the output is a trigger signal indicating that the fire extinguishing pipe 11 can be triggered normally; that is, if the trigger signal, the delayed preparation signal and the active emergency cooling signal are received at the same time, it means that the previous fire extinguishing pipe 11 has been triggered, and the subsequent fire extinguishing pipe 11 is also ready, and a confirmation signal is output. At this time, the temperature trend data is obtained at a high frequency within the delayed 5s. If the temperature trend data has a downward trend, the prepared fire extinguishing pipe 11 will not be triggered. If the temperature trend data still has an upward trend, it will be determined again with the fire warning threshold, and the preparation trigger signal will be output to trigger the two prepared fire extinguishing pipes 11 to perform cooling and fire extinguishing spray again.

[0090] Reference Figure 7 , controlling the corresponding heating element 31 by triggering the coordinate data and preparing the coordinate data, further comprising the following steps:

[0091] S3, determining and outputting a heating wire start signal by triggering coordinate data, an active emergency cooling signal and a preset heating wire threshold;

[0092] S31, determining and outputting a heating wire delay start signal by preparing coordinate data, a delay preparation signal and a heating wire threshold;

[0093] S32, determining the critical holding signal through the heating wire delay start signal and outputting it;

[0094] S33, determining the heating wire start signal through the critical hold signal and the ready trigger signal and outputting it.

[0095] In detail: the fire extinguishing pipe 11 closest to the equipment or device that is about to catch fire is determined by triggering the coordinate data. The heating wire threshold is the position of all the heating elements 31 on the fire extinguishing pipe 11. At this time, the position of the heat-conducting needle 32 closest to the fire extinguishing pipe 11 is selected. The heat-conducting needle 32 corresponds to the numbers of the two heating elements 31, and then the two numbered heating elements 31 are controlled to heat. The signal for controlling the heating of the corresponding numbered heating elements 31 is the heating wire start signal. The heating wire delay start signal is the same. Find other fire extinguishing pipes 11 closest to this fire extinguishing pipe 11 , and then determine the position of the heat-conducting needle 32 on the other fire-extinguishing pipe 11 that is closest to the position where cooling and fire extinguishing are required, and then find the numbers of the two heating elements 31 corresponding to the heat-conducting needle 32, and then control the two numbered heating elements 31 to heat, thereby triggering the prepared fire-extinguishing pipe 11; but after the heating wire delay start signal is output, a critical holding signal will be output at the same time, that is, the prepared fire-extinguishing pipe 11 will be kept at a critical temperature but not triggered, and after waiting to receive the preparation trigger signal, the heating wire start signal will be output again to trigger the prepared fire-extinguishing pipe 11.

[0096] Reference Figure 8 , further comprising the following steps:

[0097] S4, obtaining image recognition data;

[0098] S41, determining image change data through image recognition data and timing data;

[0099] S42, determining the open flame data through the image change data and a preset flame change threshold;

[0100] S43, determining smoldering data through the image change data and a preset distortion speed threshold;

[0101] S44, determining fire extinguishing data through open flame data, smoldering data and temperature trend data;

[0102] S45. Determine the heating wire start signal based on the fire extinguishing data and the heating wire threshold and output it.

[0103] In detail: the image recognition data can be a picture or a video, and when combined with time, it is represented as a video. At the same time, the image recognition data combined with time can be calculated to obtain the image change data of the image change, which can be understood as the difference between the image recognition data at this time and the image recognition data of the previous time unit. If the time unit is one-twenty-fourth of a second, it means a frame rate of twenty-four frames per second. The flame change threshold is the change data of the flame in the case of no wind or weak wind. In the box 1, there is usually no wind or weak wind. The distortion speed threshold is the change of air density caused by the smoldering high-temperature gas without open flames, resulting in the distortion change rate of the image after the air density is changed in the image. According to the image The change data and the flame change threshold can be used to determine whether there is an open flame and obtain open flame data. The image change data and the distortion speed threshold can be used to determine whether there is a smoldering phenomenon and obtain smoldering data. Either the open flame data or the smoldering data indicates the existence of an open flame or a smoldering phenomenon, but the temperature trend data does not show an upward trend. This indicates that the temperature detection module 2 is damaged, or the burning device is small and is not within the detection range of the temperature detection module 2. At this time, the fire extinguishing data is determined, and then the heating wire start signal is output through the heating wire threshold to control the heating element 31 to heat and trigger the fire extinguishing pipe 11, and at the same time output it to the user for the user to determine why the temperature detection module 2 did not detect it.

[0104] The present application embodiment discloses a computer-readable storage medium. Figure 1 The computer-readable storage medium stores a computer program that can be loaded and executed by a processor for a monitoring method of a photovoltaic box-type substation.

[0105] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0106] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic box-type substation, characterized in that: The invention comprises a box (1), wherein the electrical equipment is placed in the box (1), wherein a plurality of fire extinguishing pipes (11) are arranged in the box (1), wherein the fire extinguishing pipes (11) are clamped and fixed on the outer wall of the electrical equipment or the inner wall of the electrical equipment in the box (1), and further comprises a temperature detection module (2), an electric energy detection module (21), an image recognition module (22), a data processing module (23) and a trigger module (3), wherein the trigger module (3) is arranged on the fire extinguishing pipe (11), and the temperature detection module (2) is used to detect the temperature of the electrical equipment to obtain The power detection module (21) is used to detect the voltage and current of the electrical equipment, obtain the power detection data and output it, the image recognition module (22) is used to detect the image in the box (1) or the electrical equipment, obtain the image recognition data and output it, the data processing module (23) is used to receive the temperature detection data, the power detection data and the image recognition data, perform data processing and calculation, obtain the processing signal and output it to the trigger module (3), the trigger module (3) triggers the fire extinguishing pipe (11); The trigger module (3) comprises a heating element (31) for heating and raising the temperature, the heating element (31) being in contact with the fire extinguishing pipe (11), the fire extinguishing pipe (11) being connected to a pressure detection module (24), the pressure detection module (24) being used to detect the pressure in the fire extinguishing pipe (11) or the pressure in the electrical equipment, obtain pressure detection data and output it to the data processing module (23); The trigger module (3) further comprises a plurality of heat-conducting needles (32); the number of the heating elements (31) is plural; the plurality of heating elements (31) are cross-arranged to form a heating net (33); the heating net (33) is covered on the fire-extinguishing pipe (11); the heat-conducting needles (32) are arranged at the intersection of the plurality of heating elements (31); and the ends of the heat-conducting needles (32) are in contact with the outer wall of the fire-extinguishing pipe (11); Acquiring the electric energy detection data, the temperature detection data and the timing data, wherein the processing signal includes an active emergency cooling signal; Determining operating power data through the electric energy detection data and a preset electrical equipment resistance threshold; Determine temperature trend data through the temperature detection data and the timing data; Determining temperature warning data through the temperature trend data, a preset fire warning threshold and a preset trigger time data; Determine and output the temperature warning holding data through the electric energy detection data, the timing data and the temperature warning data; Determine active emergency cooling data through the temperature warning maintenance data, the operating power data and a preset overload threshold; Determine trigger coordinate data through the temperature warning data and the electrical equipment resistance threshold; An active emergency cooling signal is determined and outputted through the trigger coordinate data and the active emergency cooling data.

2. A monitoring method for a photovoltaic box-type substation, using a photovoltaic box-type substation according to claim 1, characterized in that: include: The processing signal also includes a delayed preparation signal and a preparation trigger signal to obtain the pressure detection data; Determine the preparation coordinate data by using the trigger coordinate data and a preset preparation quantity threshold; Determine and output a delayed preparation signal through the preparation coordinate data, a preset delay trigger threshold and the active emergency cooling data; Determining a trigger signal through the pressure detection data, the timing data and a preset trigger release threshold; Determine and output a confirmation signal through the trigger signal, the delayed preparation signal, and the active emergency cooling signal; Acquire the temperature trend data again through the confirmation signal; The preparation trigger signal is determined and outputted according to the temperature trend data, the timing data and the ignition warning threshold.

3. A monitoring method for a photovoltaic box-type substation according to claim 2, characterized in that: include: Determine and output a heating wire start signal based on the trigger coordinate data, the active emergency cooling signal and a preset heating wire threshold; Determine and output the heating wire delay start signal through the preparation coordinate data, the delayed preparation signal and the heating wire threshold; Determine and output a critical holding signal through the heating wire delay start signal; The heating wire start signal is determined and outputted through the critical hold signal and the preparation trigger signal.

4. A monitoring method for a photovoltaic box-type substation according to claim 3, characterized in that: include: Acquiring the image recognition data; determining image change data using the image recognition data and the timing data; Determining open flame data through the image change data and a preset flame change threshold; Determining smoldering data by using the image change data and a preset distortion speed threshold; Determine fire extinguishing data through the open flame data, the smoldering data and the temperature trend data; The heating wire start signal is determined and outputted according to the fire extinguishing data and the heating wire threshold.

5. A computer-readable storage medium, characterized in that: The computer program is stored which can be loaded by a processor and executes a monitoring method for a photovoltaic box-type substation as claimed in any one of claims 2 to 4.

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