Insulation arc extinguishing gas leakage monitoring method and related device

Abstract

The invention relates to the technical field of electric power, in particular to an insulation arc extinguishing gas leakage monitoring method and device, a storage medium and electronic equipment. The monitoring method comprises the following steps: monitoring the air pressure and temperature in the electrical room, and monitoring the concentrations of insulating arc extinguishing gases at different point positions in the electrical room; when it is monitored that the insulation arc extinguishing gas concentration of one point reaches a threshold value, the time difference between the insulation arc extinguishing gas concentration of the point and the insulation arc extinguishing gas concentration of the adjacent point reaches the threshold value is measured, and the insulation arc extinguishing gas concentration variable quantity of the point when the insulation arc extinguishing gas concentration of the adjacent point reaches the threshold value is monitored; and according to the measured value of the air pressure, the measured value of the temperature, the time difference and the concentration variable quantity of the insulating arc-extinguishing gas, the leakage position of the insulating arc-extinguishing gas in the electrical room is positioned. According to the monitoring method provided by the invention, the leakage position of the insulation arc extinguishing gas can be accurately positioned, the safety of electric equipment is ensured, and the potential risk is reduced.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular to a method, a device, a storage medium and an electronic device for monitoring leakage of insulating arc extinguishing gas. Background Art

[0002] SF6 gas is a colorless, tasteless, odorless, non-toxic gas. Due to its excellent insulation and arc extinguishing properties, it is widely used in power equipment such as high-voltage switches, gas insulated switchgear (GIS), high-voltage transformers, and high-voltage transmission lines. As an insulating and arc extinguishing medium, it can improve the reliability and safety of equipment and ensure the stable operation of the power system. However, under the influence of arcs, corona, sparks, partial discharges, high temperature and high humidity, SF6 gas will decompose highly toxic substances, and it is heavier than air and easily sinks to the lower layer, causing local hypoxia and suffocation.

[0003] In the prior art, online leakage monitoring is designed to monitor the amount of SF6 gas deposited in the environment, that is, when the SF6 deposition value reaches the maximum limit, an alarm and ventilation are performed, which means that it can only respond after the SF6 gas accumulates in the environment to a certain standard.

[0004] The existing technology cannot locate and monitor the leakage point actively from the source. It cannot find and locate the leakage point in time for the small amount of leakage in the early stage of leakage. To determine the specific leakage point of the GIS gas chamber, personnel still need to use handheld leak detection equipment to monitor all GIS equipment gas chamber connections, branch pipes, density meters and other locations one by one. In addition, the existing technology mainly focuses on whether the concentration of SF6 gas insulation arc extinguishing gas exceeds the standard, and the data of one monitoring point does not represent the overall insulation arc extinguishing gas concentration in the environment. The monitoring and improvement measures for the local hypoxic environment that may be caused by SF6 leakage are not perfect. Summary of the invention

[0005] The main purpose of the present invention is to solve the problem in the prior art that insulation arc extinguishing gas leakage monitoring only measures the deposition amount, is difficult to locate the source, find the initial leakage, and is difficult to realize local hypoxia monitoring.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a monitoring method for insulating arc extinguishing gas leakage is provided, which is applied to a monitoring system. The monitoring system is arranged in an electrical room and includes a data processing unit, an air pressure sensor, a temperature sensor and a concentration monitoring transmitter. The monitoring method includes.

[0007] The air pressure and temperature in the electrical room are monitored, and the concentration of insulating arc-extinguishing gas at different points in the electrical room is monitored.

[0008] When it is monitored that the insulating arc-extinguishing gas concentration at one of the points reaches a threshold value, the time difference between the insulating arc-extinguishing gas concentration at the point and the adjacent point reaching the threshold value is measured, and the concentration change of the insulating arc-extinguishing gas at the point when the insulating arc-extinguishing gas concentration at the adjacent point reaches the threshold value is monitored.

[0009] The leakage position of the insulating arc-extinguishing gas in the electrical room is located according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas.

[0010] In some embodiments, locating the position of the insulating arc-extinguishing gas leakage in the electrical room according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas includes:

[0011] Fitting the diffusion process of the insulating arc-extinguishing gas according to the measured values ​​of the gas pressure and the temperature;

[0012] According to the diffusion process and the concentration change of the insulating arc-extinguishing gas, a leakage distance between the leakage position and the point is obtained;

[0013] According to the diffusion process and the time difference, obtaining the distance difference between the leakage position and the point, and the distance difference between the leakage position and the adjacent point;

[0014] Obtain a fixed distance between the point and the adjacent point; and locate the leakage position according to the fixed distance, the distance difference, and the leakage distance.

[0015] In some embodiments, the step of fitting the diffusion process of the insulating arc-extinguishing gas according to the measured values ​​of the gas pressure and the temperature comprises:

[0016] According to the preset time intervals, the dynamic discrete measurement values ​​of the air pressure and the dynamic discrete measurement values ​​of the temperature are obtained;

[0017] Substituting the dynamic discrete measurement value of the gas pressure and the dynamic discrete measurement value of the temperature into the following formula, the dynamic diffusion coefficient of the insulating arc extinguishing gas is obtained:

[0018]

[0019] Wherein, D is the dynamic diffusion coefficient; P is the dynamic discrete measurement value of the air pressure; T is the dynamic discrete measurement value of the temperature; VB is the volume of the insulating arc-extinguishing gas calculated by the dynamic discrete measurement value of the air pressure and the dynamic discrete measurement value of the temperature.

[0020] In some embodiments, obtaining the distance difference between the leakage position and the point, and between the leakage position and the adjacent point according to the diffusion process and the time difference includes:

[0021] The dynamic diffusion coefficient is multiplied by the time interval, and the time difference is accumulated to obtain the distance difference.

[0022] In some embodiments, obtaining the leakage distance between the leakage position and the point according to the diffusion process and the concentration change of the insulating arc-extinguishing gas includes:

[0023] Calculate the concentration rise time and discrete concentration rise rate for the insulating arc extinguishing gas concentration at the point to reach a threshold value according to the dynamic diffusion coefficient and the time difference;

[0024] The leakage distance is obtained according to the concentration rise time, the discrete concentration rise rate and the concentration change of the insulating arc extinguishing gas.

[0025] In some embodiments, the following steps are also included: if the fixed distance is equal to the distance difference, or the insulating arc-extinguishing gas concentration at only one point reaches the threshold within a preset limit time, determining that the leakage position is located at the point.

[0026] In some embodiments, the following steps are also included: when the concentration of the insulating arc-extinguishing gas at any point reaches a threshold, increasing the ventilation volume of the electrical room; and / or issuing an alarm.

[0027] According to another aspect of the present invention, a monitoring device for insulating arc extinguishing gas leakage is provided, which is applied to a monitoring system, wherein the monitoring system is arranged in an electrical room, and the monitoring system comprises a data processing unit, a pressure sensor, a temperature sensor, and a concentration monitoring transmitter; the monitoring device comprises:

[0028] A monitoring module, used to monitor the air pressure and temperature in the electrical room, and to monitor the concentration of insulating arc-extinguishing gas at different points in the electrical room;

[0029] A measuring module is used to measure the time difference between the insulating arc-extinguishing gas concentration at one point and that at an adjacent point when the insulating arc-extinguishing gas concentration at one point reaches a threshold value, and to monitor the concentration change of the insulating arc-extinguishing gas at the point when the insulating arc-extinguishing gas concentration at the adjacent point reaches the threshold value;

[0030] The positioning module is used to locate the leakage position of the insulating arc-extinguishing gas in the electrical room according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas.

[0031] According to another aspect of the present invention, a storage medium is provided, storing a computer program, wherein the computer program implements the above monitoring method when executed by a processor.

[0032] According to another aspect of the present invention, an electronic device is provided, comprising at least a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the above monitoring method when executing the computer program in the memory.

[0033] The method of this embodiment monitors the air pressure, temperature and insulating arc-extinguishing gas concentration at different points in the electrical room, fits the diffusion process according to the air pressure and temperature measurement values, and locates the leakage position using the time difference and concentration change. This can improve the accuracy of leakage source positioning and system response efficiency, reduce the amount of calculation, and facilitate rapid repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0035] Figure 1 A schematic diagram showing the structure of a monitoring system according to an embodiment of the present disclosure is shown;

[0036] Figure 2 A schematic diagram showing the steps of the monitoring method according to an embodiment of the present disclosure is shown;

[0037] Figure 3 A schematic diagram showing the on-site arrangement of a monitoring system according to an embodiment of the present disclosure is shown;

[0038] Figure 4 A schematic diagram of the calculation process of an embodiment of the present disclosure is shown;

[0039] Figure 5 A schematic diagram of the module structure of the data processing unit of the monitoring system according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0043] Embodiment 1

[0044] The embodiment of the present disclosure provides a monitoring method for insulating arc extinguishing gas leakage, which can realize accurate monitoring of insulating arc extinguishing gas leakage, not only can locate the source and detect the initial leakage in time, but also can monitor the local hypoxia condition, greatly improve the safety and stability of power equipment operation, and reduce potential risks. The specific implementation method of the present disclosure is described below using SF6 gas as an example.

[0045] The monitoring method is applied to a monitoring system, which is arranged in an electrical room, such as Figure 1 As shown, the monitoring system includes a data processing unit, an air pressure sensor, a temperature sensor and a plurality of concentration monitoring transmitters 4 .

[0046] like Figure 2 As shown, the monitoring method provided by the embodiment of the present disclosure includes:

[0047] S1: monitor the air pressure and temperature in the electrical room, and monitor the concentration of insulating arc-extinguishing gas at different points in the electrical room.

[0048] Specifically, the points are arranged at the same height level of the electrical room.

[0049] Further, preferably Figure 3As shown, each point is arranged around the air pressure sensor and the temperature sensor, and is evenly and equidistantly arranged. Each point is connected to an independent concentration monitoring transmitter 4 to measure the concentration of the insulating arc-extinguishing gas 5 cm above the ground to ensure accurate measurement results.

[0050] Furthermore, the gas pressure, temperature and insulating arc extinguishing gas concentration are monitored at certain time intervals, and the time interval is preferably no more than 1 second to ensure the real-time nature of the measurement results.

[0051] S2: If it is monitored that the insulating arc-extinguishing gas concentration at one of the points reaches the threshold, measure the time difference between the insulating arc-extinguishing gas concentration at the point and the adjacent point to reach the threshold, and measure the concentration change of the insulating arc-extinguishing gas at the point when the insulating arc-extinguishing gas concentration at the adjacent point reaches the threshold.

[0052] Specifically, the time difference between the insulating arc-extinguishing gas concentration at the point and the adjacent point reaching the threshold is measured, including: starting timing after monitoring that the insulating arc-extinguishing gas concentration at one of the points reaches the threshold, and when the insulating arc-extinguishing gas concentration at the adjacent point reaches the threshold, outputting the counted time as the time difference.

[0053] Specifically, the concentration change of the insulating arc-extinguishing gas at the adjacent point is measured when the concentration of the insulating arc-extinguishing gas at the adjacent point reaches the threshold value. Figure 3 For example, if it is monitored that the insulating arc extinguishing gas concentration at one of the points 501 has reached a preset threshold, the insulating arc extinguishing gas concentrations of the points 502 and 503 equidistant from the point need to be monitored in real time. If the insulating arc extinguishing gas concentration at point 502 reaches the preset threshold first, point 502 will be used as an adjacent point to perform calculations in this step and the next step.

[0054] Specifically, the concentration change of the insulating arc-extinguishing gas at the adjacent point is measured when the concentration of the insulating arc-extinguishing gas at the adjacent point reaches a threshold value. That is, when the concentration of the insulating arc-extinguishing gas at the adjacent point 502 reaches a preset threshold value, the concentration of the insulating arc-extinguishing gas at point 501 is measured and the threshold value is subtracted to obtain the concentration change of the insulating arc-extinguishing gas.

[0055] S3: Locate the leakage position of the insulating arc-extinguishing gas in the electrical room according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas.

[0056] Specifically, locating the position of the insulating arc-extinguishing gas leakage in the electrical room according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas includes:

[0057] Fitting the diffusion process of the insulating arc-extinguishing gas according to the measured values ​​of the gas pressure and the temperature;

[0058] According to the diffusion process and the concentration change of the insulating arc-extinguishing gas, a leakage distance between the leakage position and the point is obtained;

[0059] According to the diffusion process and the time difference, obtaining the distance difference between the leakage position and the point, and the distance difference between the leakage position and the adjacent point;

[0060] A fixed distance between the point and the adjacent point is obtained, and the leakage position is located according to the fixed distance, the distance difference, and the leakage distance.

[0061] Furthermore, in the above steps, fitting the diffusion process of the insulating arc-extinguishing gas according to the measured values ​​of the air pressure and the measured values ​​of the temperature includes: obtaining the dynamic discrete measured values ​​of the air pressure and the dynamic discrete measured values ​​of the temperature at preset time intervals; substituting the dynamic discrete measured values ​​of the air pressure and the dynamic discrete measured values ​​of the temperature into the following formula to obtain the dynamic diffusion coefficient of the insulating arc-extinguishing gas:

[0062]

[0063] Wherein, D is the dynamic diffusion coefficient; P is the dynamic discrete measurement value of the air pressure; T is the dynamic discrete measurement value of the temperature; VB is the volume of the insulating arc-extinguishing gas calculated by the dynamic discrete measurement value of the air pressure and the dynamic discrete measurement value of the temperature.

[0064] Specifically, the principle of the above formula is that the points are arranged at the same height level of the electrical room. Since there is little air flow disturbance in the electrical room, it can be regarded as a stable state, so the diffusion process of SF6 gas can be regarded as a two-dimensional diffusion process, that is, the diffusion rate calculation can be used.

[0065] According to the diffusion rate calculation formula:

[0066]

[0067] Where:

[0068] D is the diffusion coefficient of A and B gases (m2 / s, A is air, B is SF6 gas); P is the total gas pressure; T is the gas temperature; MA is the molar mass of air (29g / mol), MB is the molar mass of SF6 (146.0554g / mol); ∑VA is the volume of air (fixed value); ∑VB is the volume of SF6 gas diffuser (calculated by real-time monitoring). Substituting the above parameters into the formula used in the embodiment of the present disclosure can obtain the formula used in the embodiment of the present disclosure.

[0069] Further, according to the diffusion process and the time difference, obtaining the distance difference between the leakage position and the point, and between the leakage position and the adjacent point, includes:

[0070] Calculate according to the following formula:

[0071] L=∑D·S

[0072] In the formula, L is the distance difference, D is the dynamic diffusion coefficient, and S is the time interval. That is, the dynamic diffusion coefficient is multiplied by the time interval, and the time interval is accumulated according to the time difference to obtain the distance difference.

[0073] Furthermore, according to the diffusion process and the concentration change of the insulating arc-extinguishing gas, the leakage distance between the leakage position and the point is obtained, including: calculating the concentration rise time and discrete concentration rise rate for the insulating arc-extinguishing gas concentration at the point to reach a threshold value according to the dynamic diffusion coefficient and the time difference; and obtaining the leakage distance according to the concentration rise time, discrete concentration rise rate and the concentration change of the insulating arc-extinguishing gas.

[0074] Specifically, the principle of the above steps is that the discrete dynamic diffusion coefficient is calculated according to the time interval, and the time difference is set as the coordinate axis, so as to obtain a discrete dynamic diffusion coefficient and time-related function with a step length of the above time interval, and then the concentration change over time can be calculated step by step in a discrete form, that is, starting from the initial concentration distribution, the concentration value is continuously updated until the concentration at the monitoring point reaches the threshold, and the time at this time is recorded as the concentration rise time, and then the change is divided by the time in steps to obtain the discrete concentration rise rate. After that, the diffusion distance of each time interval is calculated step by step according to the discrete concentration rise rate, and then the leakage distance is obtained by accumulating.

[0075] Furthermore, the leakage position is located according to the fixed distance between the measured point and the adjacent point, and the distance difference and the leakage distance calculated in the above steps.

[0076] The leakage position is located according to the fixed distance, the distance difference and the leakage distance.

[0077] There are many computer algorithms for locating the leak location. Figure 4 Take the example to explain the above calculation principle through analytical geometry:

[0078] like Figure 4 As shown, it is assumed that the coordinates of point 501 are (0, 0), the coordinates of the adjacent point 502 are (a, 0), and the coordinates of the leakage position 6 are (x, y).

[0079] Assume again that according to the above steps: the leakage distance between the leakage position 6 and the point 501 is c; the distance difference between the leakage position 6 and the point 501, and between the leakage position 6 and the adjacent point 502 is b; and the fixed distance between the point and the adjacent point is a.

[0080] According to the geometric relationship, the equation group can be established:

[0081]

[0082] There are two equations with two unknowns in the system of equations, and the equations can be solved. Then, according to the actual device layout or geometric situation, the redundant solutions are discarded, and the coordinates of the leakage position 6 can be obtained as (x, y).

[0083] In addition, optionally, the leakage position may be solved by using a trigonometric function method, which will not be described in detail here.

[0084] In summary, the leakage position can be located according to the fixed distance, the distance difference, and the leakage distance by calculation. That is, this step realizes locating the leakage position of the insulating arc-extinguishing gas in the electrical room according to the measured value of the air pressure, the measured value of the temperature, the time difference, and the concentration change of the insulating arc-extinguishing gas.

[0085] In a specific implementation, the method further includes the following steps: if the fixed distance is equal to the distance difference, or the insulating arc extinguishing gas concentration at only one point reaches the threshold within a preset limit time, determining that the leakage position is located at the point.

[0086] This approach avoids complex multi-point analysis and ambiguous positioning judgments, improves the accuracy of leak source positioning, improves the response efficiency of the system, reduces the amount of computing for monitoring and analysis, and allows maintenance personnel to quickly take repair measures on the leak point.

[0087] In a specific implementation, the following steps are also included: when the concentration of the insulating arc-extinguishing gas at any point reaches a threshold, the ventilation volume of the electrical room is increased; and / or an alarm is issued. Ventilation and alarm when the concentration of the insulating arc-extinguishing gas reaches a threshold are conducive to ensuring personnel safety and maintaining stable operation of the equipment.

[0088] The method of this embodiment monitors the air pressure, temperature and insulating arc-extinguishing gas concentration at different points in the electrical room, fits the diffusion process according to the air pressure and temperature measurement values, and locates the leakage position using the time difference and concentration change. This can improve the accuracy of leakage source positioning and system response efficiency, reduce the amount of calculation, and facilitate rapid repair.

[0089] At the same time, when there is a specific relationship between the fixed distance and the distance difference, accurate positioning can be achieved. In addition, ventilation and alarm when the concentration reaches the threshold can not only ensure the safety of personnel and avoid the danger of inhaling toxic gases and hypoxia, but also maintain the stable operation of the equipment and reduce the impact of abnormal gas concentration on the equipment.

[0090] In summary, the embodiments of the present disclosure can realize accurate monitoring of insulation arc extinguishing gas leakage, which can not only locate the source and promptly detect initial leakage, but also monitor local hypoxia conditions, greatly improving the safety and stability of power equipment operation and reducing potential risks.

[0091] Embodiment 2

[0092] This embodiment provides a monitoring system, which is arranged in an electrical room. Figure 1 As shown, the monitoring system includes a data processing unit 1 , an air pressure sensor 2 , a temperature sensor 3 and a plurality of concentration monitoring transmitters 4 .

[0093] Furthermore, the air pressure sensor 2, the temperature sensor 3 and the plurality of concentration monitoring transmitters 4 are connected to the data processing unit 1 via a CAN cable to form a communication link.

[0094] Further, such as Figure 5 As shown, the data processing unit 1 includes a data storage module 101, a timer 102, a processor 103, an alarm module 104, a display module 105, and a linkage control module 106. Among them:

[0095] The data storage module 101 can store the real-time data of SF6 insulating arc extinguishing gas concentration, pressure, temperature collected on site and the timestamp data in the data processing process frequently, so as to facilitate the later processing.

[0096] The timer 102 is used to perform timing according to the monitoring method described in the first embodiment.

[0097] The processor 103 is used to analyze and calculate the real-time data of the concentration, pressure and temperature of the SF6 insulating arc extinguishing gas, including the diffusion rate, diffusion speed and diffusion distance, and send the analysis results to the status display module, the linkage control module and the alarm module. Specifically, the functional module of the processor 103 can implement each method step of the first embodiment.

[0098] The alarm module 104 is used to issue an alarm according to the measured value of the SF6 insulating arc extinguishing gas concentration to notify relevant personnel to check the on-site situation.

[0099] The display module 105 is used to display the device data and status in real time, including the real-time data of SF6 insulating arc extinguishing gas concentration, gas pressure, temperature, alarm status, leakage location, linkage status, sensor status, etc.

[0100] The linkage control module 106 is used to complete the control output including fire protection, ventilation and dehumidification according to the data processing CPU instructions.

[0101] The detection system provided in this embodiment can realize the monitoring method described in the first embodiment.

[0102] Embodiment 3

[0103] This embodiment provides a storage medium storing a computer program. When the computer program is executed by a processor, the monitoring method described in the first embodiment is implemented.

[0104] Embodiment 4

[0105] This embodiment provides an electronic device, which includes at least a memory and a processor. The memory stores a computer program, and the processor implements the monitoring method provided in the first embodiment when executing the computer program in the memory.

[0106] The storage medium may be included in the electronic device, or may exist independently without being installed in the electronic device.

[0107] The storage medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device: obtains at least two Internet Protocol addresses; sends a node evaluation request including at least two Internet Protocol addresses to a node evaluation device, wherein the node evaluation device selects an Internet Protocol address from the at least two Internet Protocol addresses and returns it; receives the Internet Protocol address returned by the node evaluation device; wherein the obtained Internet Protocol address indicates an edge node in a content distribution network.

[0108] Alternatively, the storage medium carries one or more programs, and when the one or more programs are executed by the electronic device, the electronic device: receives a node evaluation request including at least two Internet Protocol addresses; selects an Internet Protocol address from the at least two Internet Protocol addresses; and returns the selected Internet Protocol address; wherein the received Internet Protocol address indicates an edge node in a content distribution network.

[0109] Computer program code for performing operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the passenger computer, partially on the passenger computer, as a separate software package, partially on the passenger computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the passenger computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0110] It should be noted that the storage medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer readable signal medium may also be any storage medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0111] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0112] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, constitute a limitation on the unit itself.

[0113] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0114] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0115] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0116] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0117] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0118] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A method for monitoring insulation arc extinguishing gas leakage, characterized in that: Applied to a monitoring system, the monitoring system is arranged in an electrical room, the monitoring system includes a data processing unit, an air pressure sensor, a temperature sensor and a concentration monitoring transmitter, and the monitoring method includes: Monitoring the air pressure and temperature in the electrical room, and monitoring the concentration of insulating arc-extinguishing gas at different points in the electrical room; When it is monitored that the insulating arc-extinguishing gas concentration at one of the points reaches a threshold value, the time difference between the insulating arc-extinguishing gas concentration at the point and the adjacent point reaching the threshold value is measured, and the concentration change of the insulating arc-extinguishing gas at the point when the insulating arc-extinguishing gas concentration at the adjacent point reaches the threshold value is monitored; The leakage position of the insulating arc-extinguishing gas in the electrical room is located according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas.

2. The method for monitoring insulation arc extinguishing gas leakage according to claim 1, characterized in that: The method of locating the position of the insulating arc-extinguishing gas leakage in the electrical room according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas comprises: Fitting the diffusion process of the insulating arc-extinguishing gas according to the measured values ​​of the gas pressure and the temperature; According to the diffusion process and the concentration change of the insulating arc-extinguishing gas, a leakage distance between the leakage position and the point is obtained; According to the diffusion process and the time difference, obtaining the distance difference between the leakage position and the point, and the distance difference between the leakage position and the adjacent point; Obtain a fixed distance between the point and the adjacent point; and locate the leakage position according to the fixed distance, the distance difference, and the leakage distance.

3. The method for monitoring insulation arc extinguishing gas leakage according to claim 2, characterized in that: in, The step of fitting the diffusion process of the insulating arc-extinguishing gas according to the measured value of the gas pressure and the measured value of the temperature comprises: According to the preset time intervals, the dynamic discrete measurement values ​​of the air pressure and the dynamic discrete measurement values ​​of the temperature are obtained; Substituting the dynamic discrete measurement value of the gas pressure and the dynamic discrete measurement value of the temperature into the following formula, the dynamic diffusion coefficient of the insulating arc extinguishing gas is obtained: Wherein, D is the dynamic diffusion coefficient; P is the dynamic discrete measurement value of the air pressure; T is the dynamic discrete measurement value of the temperature; VB is the volume of the insulating arc-extinguishing gas calculated by the dynamic discrete measurement value of the air pressure and the dynamic discrete measurement value of the temperature.

4. The method for monitoring insulation arc extinguishing gas leakage according to claim 3, characterized in that: Obtaining the distance difference between the leakage position and the point, and between the leakage position and the adjacent point according to the diffusion process and the time difference, including: The dynamic diffusion coefficient is multiplied by the time interval, and the time difference is accumulated to obtain the distance difference.

5. The method for monitoring insulation arc extinguishing gas leakage according to claim 3, characterized in that: Obtaining a leakage distance between the leakage position and the point according to the diffusion process and the concentration change of the insulating arc-extinguishing gas, including: Calculate the concentration rise time and discrete concentration rise rate for the insulating arc extinguishing gas concentration at the point to reach a threshold value according to the dynamic diffusion coefficient and the time difference; The leakage distance is obtained according to the concentration rise time, the discrete concentration rise rate and the concentration change of the insulating arc extinguishing gas.

6. The method for monitoring insulation arc extinguishing gas leakage according to claim 2, characterized in that: The method further includes the following steps: if the fixed distance is equal to the distance difference, or the insulating arc extinguishing gas concentration at only one point reaches the threshold value within the preset limit time, determining that the leakage position is located at the point.

7. The method for monitoring insulation arc extinguishing gas leakage according to claim 1, characterized in that: The following steps are also included: When the concentration of the insulating arc-extinguishing gas at any point reaches a threshold, the ventilation volume of the electrical room is increased; and / or an alarm is issued.

8. A monitoring device for insulating arc extinguishing gas leakage, characterized in that: Applied to a monitoring system, the monitoring system is arranged in an electrical room, the monitoring system includes a data processing unit, an air pressure sensor, a temperature sensor and a concentration monitoring transmitter; the monitoring device includes: A monitoring module, used to monitor the air pressure and temperature in the electrical room, and to monitor the concentration of insulating arc-extinguishing gas at different points in the electrical room; A measuring module is used to measure the time difference between the insulating arc-extinguishing gas concentration at one point and that at an adjacent point when the insulating arc-extinguishing gas concentration at one point reaches a threshold value, and to monitor the concentration change of the insulating arc-extinguishing gas at the point when the insulating arc-extinguishing gas concentration at the adjacent point reaches the threshold value; The positioning module is used to locate the leakage position of the insulating arc-extinguishing gas in the electrical room according to the measured value of the gas pressure, the measured value of the temperature, the time difference and the concentration change of the insulating arc-extinguishing gas.

9. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the monitoring method according to any one of claims 1 to 7 is implemented.

10. An electronic device, comprising at least a memory and a processor, wherein a computer program is stored in the memory, wherein: The processor implements the monitoring method according to any one of claims 1 to 7 when executing the computer program on the memory.

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