Water leakage monitoring method and monitoring device for transformer substation terminal box

Abstract

The present invention provides a method and device for monitoring water leakage of a transformer substation terminal box, the monitoring method comprising selecting the type of terminal box to be monitored; determining the time period to be monitored; determining the starting factor of the terminal box in the time period to be monitored, the starting factor being used to characterize the starting probability of the terminal box during use; and judging the operating state of the terminal box based on the starting factor. By determining the starting factor of the terminal box in the time period to be monitored, the operating state of the terminal box can be judged based on the starting factor, thereby realizing automatic judgment of whether the terminal box is leaking and whether the heater is normal, realizing monitoring and diagnosis of the operating state of the heater in the terminal box, and at the same time reducing the manpower cost of manpower inspection during the operation of the transformer substation, being able to timely discover the box body affected by moisture or heater failure, avoiding low insulation of the DC system caused by moisture, affecting the safe operation of the entire secondary equipment control circuit, and improving the safety of transformer substation operation.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment monitoring, and in particular to a method and a device for monitoring water leakage of a transformer substation terminal box. Background Art

[0002] The terminal box is the intermediate link for connecting outdoor electrical equipment in the substation with indoor measurement, control, protection, communication and other equipment. Its interior is the gathering place of various secondary wirings. It is mainly responsible for connecting indoor non-electrical protection signals, communications and measurement and control devices with various outdoor electrical equipment. It plays a dual role of measurement and protection in the power system. Whether its operating status is good directly affects the safety of power system operation and the stability of power supply.

[0003] When the air is humid, especially in the rainy season, frequent rain will cause water to penetrate into the terminal box with poor sealing performance. If the water cannot be evaporated and discharged from the box in time, the water vapor will form condensation on the top of the next morning due to the large temperature difference between the inside and outside of the box. This situation can easily cause a short circuit in the terminal block, which can cause serious accidents such as malfunction of switches and knife switches, or even worse, low insulation of the DC system and false alarms in the signal circuit.

[0004] The existing technology mainly installs heating plates and exhaust fans in the terminal box to reduce the humidity in the terminal box. However, once the heating plate or the exhaust fan fails, it will also affect the normal operation of the equipment in the terminal box. In order to avoid the above situation, for manned substations, special patrol duty personnel will be arranged in advance according to the recent weather forecast to open the terminal boxes in the substation one by one to check whether there is water leakage, whether the heater is started normally, etc. This adds a lot of repetitive work to the patrol personnel. At the same time, manual inspections cannot find problems in time, which leads to various accidents in the terminal box.

[0005] Therefore, there is a technical problem in the prior art that the terminal box cannot self-monitor the working status of the heater and the accident rate of the terminal box is high. Summary of the invention

[0006] The main purpose of the present invention is to provide a water leakage monitoring method and monitoring device for a substation terminal box, so as to solve the technical problems existing in the related art that the terminal box cannot self-monitor the working status of the heater and the terminal box has a high accident rate.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a method for monitoring water leakage of a terminal box of a substation is provided, comprising the following steps: selecting the type of terminal box to be monitored; determining the time period to be monitored; determining the starting factor of the terminal box within the time period to be monitored, the starting factor being used to characterize the starting probability of the terminal box during use; and judging the operating status of the terminal box based on the starting factor.

[0008] Further, the selecting the type of the substation terminal box to be monitored includes: acquiring a working area of ​​the terminal box; determining the type of the terminal box based on the working area, and selecting the type of the terminal box to be monitored.

[0009] Further, the determining of the time period to be monitored includes: counting the number of heaters started in the terminal box to be monitored N s ; Determine the time period to be monitored based on the quantity.

[0010] Further, the determining the time period to be monitored based on the quantity includes: obtaining a start threshold value of a heater of the terminal box to be monitored ; Based on the startup number Ns and the startup threshold Determine the time period to be monitored, wherein if the number of heater activations reaches 2 , then this time is selected as the starting point of the heater startup statistical time period; if the number of heater startups decreases to 1.2 , then select this time as the end point of the heater startup statistical time period.

[0011] Furthermore, the start threshold The average number of heaters activated on sunny days in the terminal box of the type to be monitored during the specified time period.

[0012] Furthermore, determining the startup factor of the terminal box during the time period to be monitored includes: calculating the average startup duration of the heaters of all selected terminal boxes during the time period to be monitored; obtaining the startup duration of the heaters in each terminal box during the time period; and determining the startup factor of each terminal box during the time period based on the startup duration.

[0013] Furthermore, the operation status of the terminal box is determined based on the starting factor, including: if the starting factor is greater than a first comparison threshold and less than a second comparison threshold, it indicates that the terminal box is in a normal operation state; if the starting factor is greater than the second comparison threshold and less than a third comparison threshold, it indicates that the terminal box is in a high-load operation state; if the starting factor is greater than the third comparison threshold, it indicates that the terminal box is in a water leakage state; if the starting factor is greater than the fourth comparison threshold and less than the first comparison threshold, it indicates that the terminal box heater is working abnormally; if the starting factor is close to the fifth comparison threshold, it indicates that the terminal box heater is faulty.

[0014] According to another aspect of the present invention, a leakage monitoring device for a substation terminal box is provided, comprising: a selection module for selecting the type of terminal box to be monitored; a first determination module for determining a time period to be monitored; a second determination module for determining a starting factor of the terminal box within the time period to be monitored, the starting factor being used to characterize the starting probability of the terminal box during use; and a judgment module for judging the operating status of the terminal box based on the starting factor.

[0015] According to another aspect of the present invention, the present invention further provides a safety belt storage medium storing a computer program, wherein when the computer program is executed by a processor, the steps of the method for monitoring water leakage in a substation terminal box described in any one of the above items are implemented.

[0016] According to another aspect of the present invention, the present invention also provides an electronic device, comprising at least a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program on the memory, the steps of the water leakage monitoring method for the substation terminal box as described in any one of the above items are implemented.

[0017] By applying the leakage monitoring method for the substation terminal box provided by the present invention, by determining the starting factor of the terminal box within the time period to be monitored, the operating status of the terminal box can be judged based on the starting factor, thereby realizing automatic judgment on whether the terminal box is leaking and whether the heater is normal, and realizing the monitoring and diagnosis of the operating status of the heater in the terminal box. At the same time, the manpower cost of manual inspection during the operation of the substation is greatly reduced, and the box that is affected by moisture or heater failure can be discovered in time, avoiding low insulation of the DC system due to moisture, affecting the safe operation of the entire secondary equipment control loop, and improving the safety of the substation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 A flow chart showing the steps of the method for monitoring water leakage in a transformer substation terminal box provided by the present invention is shown;

[0020] Figure 2 A flowchart showing the steps of selecting the type of terminal box of the substation to be monitored in the present invention;

[0021] Figure 3 A flow chart showing the steps of determining a time period to be monitored in the present invention is shown;

[0022] Figure 4 The present invention shows the number of startups N sFlowchart of steps for determining the time period to be monitored;

[0023] Figure 5 A flowchart of the steps of determining the start factor of the terminal box within the time period to be monitored in the present invention is shown;

[0024] Figure 6 A circuit diagram of a terminal box heater in the present invention is shown;

[0025] Figure 7 The structural block diagram of the water leakage monitoring device for the transformer substation terminal box provided by the present invention is shown;

[0026] Figure 8 The figure shows a schematic diagram of the structure of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0027] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but are not intended to limit the present disclosure.

[0028] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0030] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the attached drawings.

[0031] It should also be understood that, although the present disclosure has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0032] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0033] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but only to serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0035] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0036] The present disclosure is further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] In order to solve the technical problems in the prior art that the terminal box cannot self-monitor the working status of the heater and the terminal box has a high accident rate, the present invention provides a water leakage monitoring method and device for a substation terminal box.

[0038] Figure 1 The flowchart of the leakage monitoring method of the transformer substation terminal box provided by the present invention is shown as follows: Figure 1 As shown, the water leakage monitoring method comprises the following steps:

[0039] S101, select the type of terminal box to be monitored.

[0040] In this step, select the type of terminal box to be monitored.

[0041] Specifically, in a substation, there are a large number of terminal boxes. To facilitate monitoring, the terminal boxes are divided into different types, and a certain type of terminal box is selected for monitoring each time, so that the working status of the terminal box can be monitored more accurately.

[0042] Figure 2 The flowchart of the steps for selecting the type of terminal box of the substation to be monitored in the present invention is shown as follows: Figure 2 As shown, selecting the type of terminal box to be monitored includes the following steps:

[0043] S201, obtaining a working area of ​​the terminal box.

[0044] In this step, the working area of ​​the terminal box is obtained; wherein the working area is the working area of ​​the terminal box in the substation.

[0045] In order to transmit the electric energy generated by the power plant to a distant place, the voltage needs to be increased and converted into high voltage during the power transmission process, and then the voltage is reduced as needed near the user. This work of raising and lowering the voltage is completed by the substation. In my country, the common voltage levels of AC power transmission and transformation include 1000kV, 750kV, 500kV, 330kV, 220kV, 110kV, 66kV, 35kV, 20kV, and 10kV.

[0046] Specifically, a substation usually has areas with three voltage levels. In this step, the voltage area where the terminal box is located is obtained, so that the terminal box is classified according to the voltage area where the terminal box is located.

[0047] S202: Determine the type of the terminal box based on the working area, and select the type of the terminal box to be monitored.

[0048] After completing the above step S201, in this step, the type of the terminal box is determined based on the working area, and the type of the terminal box to be monitored is selected.

[0049] Specifically, after obtaining the working area of ​​the terminal box, in this step, the monitoring area is divided according to the voltage level of the terminal box, and the terminal boxes of the same voltage level are classified into one category, so that the working area of ​​the terminal box is divided by determining the working area of ​​the terminal box. In the process of monitoring the terminal box, the type of the terminal box is determined by selecting the working area of ​​the terminal box.

[0050] S102, determining a time period to be monitored.

[0051] After completing the above step S101, in this step, the time period to be monitored is determined.

[0052] Specifically, after determining the object to be monitored, in this step, the time period to be monitored during the working process of the object to be monitored is further determined. Figure 3 As shown, the determining of the time period to be monitored comprises the following steps:

[0053] S301, counting the number of heaters started in the terminal box to be monitored N s .

[0054] After determining the type of terminal box to be monitored, in this step, the number of heater activations N in all terminal boxes of the type to be monitored is counted. s .

[0055] For example, assuming that the number of terminal boxes to be monitored is 40, the number of terminal boxes whose internal heaters are activated among the selected 40 terminal boxes is monitored.

[0056] S302, based on the startup quantity N s The time period to be monitored is determined.

[0057] After completing the above step S301, in this step, based on the startup number N s Determine the time period to be monitored, wherein determining the time period to be monitored includes determining a start time and an end time of the time period to be monitored.

[0058] Furthermore, if Figure 4 As shown, the startup number N s Determining the time period to be monitored comprises the following steps:

[0059] S401, obtaining the start threshold of the heater of the terminal box to be monitored .

[0060] In this step, the start threshold of the heater of the terminal box to be monitored is obtained. ; Wherein, the start threshold Used to indicate the working status of the heater in the terminal box.

[0061] Specifically, the average number of heaters in the selected type of terminal box that are activated on sunny days is counted, and this average number is used as the activation threshold. To characterize the working status of the heater in the terminal box. In order to improve the accuracy of the data, a longer period of time can be selected for statistics, such as 50 days or 100 days, and the average number of heaters started in the terminal box on sunny days during this period of time can be counted. This value characterizes the working status of the heater in the terminal box in normal weather.

[0062] S402, based on the startup quantity N s and start threshold The time period to be monitored is determined.

[0063] After completing the above step S401, in this step, based on the startup number N s and start threshold The time period to be monitored is determined.

[0064] In the time determination process, the time period to be monitored can be determined by determining the start time and the end time. Specifically, the number of heaters started in all terminal boxes can objectively reflect the overall working status of the terminal box. In all terminal boxes, if the number of heaters started reaches 2 , then select this time point as the starting point of the statistical period; if the number of heater starts reaches 1.2 , then this time point is selected as the end point of the statistical time period, so that the starting point and the end point of the statistical time period can be determined according to the number of heater startups.

[0065] S103, determining a start-up factor of the terminal box within a time period to be monitored.

[0066] After completing the above step S102, in this step, a start-up factor of the terminal box in the time period to be monitored is determined, wherein the start-up factor is used to characterize the start-up probability of the terminal box during use.

[0067] Specifically, Figure 5 As shown, the determining of the start-up factor of the terminal box within the time period to be monitored specifically includes the following steps:

[0068] S501, calculating the average duration of heater activation of all selected terminal boxes within the time period to be monitored.

[0069] In this step, the average duration of heater activation of all selected terminal boxes within the time period to be monitored is calculated.

[0070] Among them, let T i is the heating time of the heater in the i-th terminal box, is the average duration of all heater activations in the terminal box, then It can be obtained by the following formula:

[0071] .

[0072] Specifically, Figure 6 The circuit diagram of the terminal box heater is shown as Figure 6As shown, the time relay can be connected in series in the heater circuit. When the switch in the heater controller is closed, the heater circuit is turned on, the time relay is energized, its contact SJ is closed, and timing begins. A time relay is set in each terminal box and connected to the terminal block of the measurement and control screen, so that the heating time of the heater can be collected and transmitted to the measurement and control screen.

[0073] Taking a 500kV substation as an example, the time relay contacts in the 35kV area terminal box, 220kV local control cabinet, and 500kV control cabinet are connected to the common positive power supply of the measurement and control panel, and then returned to the input end of the measurement and control panel, forming the entire time monitoring and statistical loop. The time data is sent to the App on the monitoring background computer in the main control room, so that the time curve of the start and stop of each terminal box heater can be displayed in real time.

[0074] S502, obtaining the start-up time of the heater in each terminal box within the time period to be monitored.

[0075] After completing the above step S501, in this step, the start-up time of the heater in each terminal box within the time period to be monitored is obtained.

[0076] Specifically, during the use of the terminal box, the humidity inside it is bound to be different due to the different positions and internal structures, so the startup time of the heater in the terminal box is also different. In this step, the startup time of the heater in each terminal box during the time period to be monitored is obtained to characterize the working status of the heater during the time period to be monitored.

[0077] S503: Determine a startup factor of each terminal box within a time period to be monitored based on the startup duration.

[0078] After completing the above step S502, in this step, the startup factor of each terminal box in the time period is determined based on the startup duration.

[0079] Specifically, the startup time of each terminal box in the statistical time period is used Average startup time The relative percentage of is used as the starting factor to characterize the working state of the heater in the terminal box. The specific algorithm is as follows:

[0080] ,in is the starting factor of the i-th terminal box.

[0081] S104: Determine the operating status of the terminal box based on the startup factor.

[0082] After the starting factor is determined, in this step, the operating state of the terminal box is judged based on the starting factor, wherein the operating state at least includes a normal operating state, a high-load operating state, a water leakage state, an abnormal heater operating state, and a heater failure state.

[0083] Specifically, if the startup factor is greater than the first comparison threshold and less than the second comparison threshold, it means that the heater is within the normal operating range, indicating that the terminal box is in normal operating state; preferably, the first comparison threshold can be -50%, and the second comparison threshold can be 50%.

[0084] If the startup factor is greater than the second comparison threshold and less than the third comparison threshold, at this time, the heater described in the manual is started more frequently, indicating that the heater in the terminal box is in a high-load operation state; preferably, the third comparison threshold can be 100%.

[0085] If the startup factor is greater than the third comparison threshold, it means that the heater startup is significantly higher than the daily average level, indicating that the terminal box is in a water leakage state.

[0086] If the startup factor is greater than the fourth comparison threshold and less than the first comparison threshold, it means that the heater startup frequency is low, indicating that the terminal box heater is working abnormally; preferably, the fourth comparison threshold may be -80%.

[0087] If the startup factor is approximately the fifth comparison threshold, it means that the heater is rarely started, indicating that the terminal box heater is faulty; preferably, the fifth comparison threshold is -100%.

[0088] By applying the leakage monitoring method for the substation terminal box provided by the present invention, by determining the starting factor of the terminal box within the time period to be monitored, the operating status of the terminal box can be judged based on the starting factor, thereby realizing automatic judgment on whether the terminal box is leaking and whether the heater is normal, and realizing the monitoring and diagnosis of the operating status of the heater in the terminal box. At the same time, the manpower cost of manual inspection during the operation of the substation is greatly reduced, and the box that is affected by moisture or heater failure can be discovered in time, avoiding low insulation of the DC system due to moisture, affecting the safe operation of the entire secondary equipment control loop, and improving the safety of the substation operation.

[0089] Example 2

[0090] In order to better implement the above method, the second aspect of the present disclosure further provides a water leakage monitoring device for a transformer substation terminal box, and the alarm device can be integrated on an electronic device.

[0091] For example, Figure 7As shown, the monitoring device 200 may include: a selection module 210, a first determination module 220, a second determination module 230 and a judgment module 240, which are specifically as follows:

[0092] (1) A selection module 210 , which is used to select the type of terminal box to be monitored.

[0093] (2) A first determining module 220, which is used to determine a time period to be monitored.

[0094] (3) A second determination module 230, which is used to determine a start-up factor of the terminal box within a time period to be monitored, wherein the start-up factor is used to characterize a start-up probability of the terminal box during use.

[0095] (4) A judgment module 240, wherein the judgment module 240 is used to judge the operating state of the terminal box based on the starting factor.

[0096] Furthermore, the selection module 210 includes a first acquisition unit and a first determination unit, wherein the first acquisition unit acquires the working area of ​​the terminal box; the first determination unit is used to determine the type of the terminal box based on the working area and select the type of the terminal box to be monitored.

[0097] Furthermore, the first determination module 220 includes a statistical unit and a second determination unit, wherein the statistical unit is used to count the number of heater startups N of the terminal box to be monitored. s ; The second determination unit is used to determine the time period to be monitored based on the quantity.

[0098] Furthermore, the second determination unit is used to obtain a start threshold value of a heater of the terminal box to be monitored. The second determination unit is also used based on the startup number Ns and the startup threshold Determine the time period to be monitored, wherein if the number of heater activations reaches 2 , then this time is selected as the starting point of the heater startup statistical time period; if the number of heater startups decreases to 1.2 , then select this time as the end point of the heater startup statistical time period.

[0099] Furthermore, the start threshold The average number of heaters activated on sunny days in the terminal box of the type to be monitored during the specified time period.

[0100] Furthermore, the second determination module 230 includes a calculation unit, a second acquisition unit and a third determination unit, wherein the calculation unit is used to calculate the average duration of heater startup of all selected terminal boxes within the time period to be monitored; the second acquisition unit is used to acquire the startup duration of the heater in each terminal box within the time period; and the third determination unit is used to determine the startup factor of each terminal box within the time period based on the startup duration.

[0101] Furthermore, the operation status of the terminal box is determined based on the starting factor, including: if the starting factor is greater than a first comparison threshold and less than a second comparison threshold, it indicates that the terminal box is in a normal operation state; if the starting factor is greater than the second comparison threshold and less than a third comparison threshold, it indicates that the terminal box is in a high-load operation state; if the starting factor is greater than the third comparison threshold, it indicates that the terminal box is in a water leakage state; if the starting factor is greater than the fourth comparison threshold and less than the first comparison threshold, it indicates that the terminal box heater is working abnormally; if the starting factor is close to the fifth comparison threshold, it indicates that the terminal box heater is faulty.

[0102] By applying the leakage monitoring device for the substation terminal box provided by the present invention, by determining the starting factor of the terminal box within the time period to be monitored, the operating status of the terminal box can be judged based on the starting factor, thereby realizing automatic judgment on whether the terminal box is leaking and whether the heater is normal, and realizing the monitoring and diagnosis of the operating status of the heater in the terminal box. At the same time, the manpower cost of manual inspection during the operation of the substation is greatly reduced, and the box that is affected by moisture or heater failure can be discovered in time, avoiding low insulation of the DC system due to moisture, affecting the safe operation of the entire secondary equipment control circuit, and improving the safety of substation operation.

[0103] Example 3

[0104] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0105] To this end, a third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium and stores a computer program. When the computer program is executed by a processor, the method provided by the embodiment of the present disclosure is implemented, including the following steps S11 to S14:

[0106] S11, select the type of terminal box to be monitored;

[0107] S12, determining the time period to be monitored;

[0108] S13, determining a startup factor of the terminal box in a time period to be monitored, wherein the startup factor is used to characterize a startup probability of the terminal box during use;

[0109] S14, judging the operating status of the terminal box based on the startup factor.

[0110] Furthermore, when the computer program is executed by a processor, other methods provided by any of the above embodiments of the present disclosure are implemented.

[0111] By applying the leakage monitoring method for the substation terminal box provided by the present invention, by determining the starting factor of the terminal box within the time period to be monitored, the operating status of the terminal box can be judged based on the starting factor, thereby realizing automatic judgment on whether the terminal box is leaking and whether the heater is normal, and realizing the monitoring and diagnosis of the operating status of the heater in the terminal box. At the same time, the manpower cost of manual inspection during the operation of the substation is greatly reduced, and the box that is affected by moisture or heater failure can be discovered in time, avoiding low insulation of the DC system due to moisture, affecting the safe operation of the entire secondary equipment control loop, and improving the safety of the substation operation.

[0112] Example 4

[0113] A fourth embodiment of the present disclosure provides an electronic device, such as Figure 8 As shown, the electronic device at least includes a memory 310 and a processor 320. The memory 310 stores a computer program. The processor 320 implements the method provided by any embodiment of the present disclosure when executing the computer program on the memory 310. Exemplarily, the method executed by the electronic device computer program is as follows:

[0114] S21, select the type of terminal box to be monitored;

[0115] S22, determining a time period to be monitored;

[0116] S23, determining a startup factor of the terminal box in a time period to be monitored, wherein the startup factor is used to characterize a startup probability of the terminal box during use;

[0117] S24, judging the operating status of the terminal box based on the startup factor.

[0118] In specific implementation, the selection module 210, the first determination module 220, the second determination module 230 and the judgment module 240 are all stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.

[0119] By applying the leakage monitoring method for the substation terminal box provided by the present invention, by determining the starting factor of the terminal box within the time period to be monitored, the operating status of the terminal box can be judged based on the starting factor, thereby realizing automatic judgment on whether the terminal box is leaking and whether the heater is normal, and realizing the monitoring and diagnosis of the operating status of the heater in the terminal box. At the same time, the manpower cost of manual inspection during the operation of the substation is greatly reduced, and the box that is affected by moisture or heater failure can be discovered in time, avoiding low insulation of the DC system due to moisture, affecting the safe operation of the entire secondary equipment control loop, and improving the safety of the substation operation.

[0120] The storage medium may be included in the electronic device, or may exist independently without being installed in the electronic device.

[0121] 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.

[0122] 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.

[0123] 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).

[0124] 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. Computer readable signal media may also be any storage medium other than computer readable storage media that can 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), or any suitable combination of the above.

[0125] 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 the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0126] 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, limit the unit itself.

[0127] 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).

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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 only example forms of implementing the claims.

[0132] 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 water leakage in a transformer substation terminal box, characterized in that: The steps include: Select the type of terminal box to be monitored; Determine the time period to be monitored; Determine a startup factor of the terminal box within a time period to be monitored, wherein the startup factor is used to characterize a startup probability of the terminal box during use; Determining the operating state of the terminal box based on the startup factor; The determining of the time period to be monitored includes: counting the number Ns of heaters started in the terminal box to be monitored; and determining the time period to be monitored based on the number; The determining of the time period to be monitored based on the quantity includes: obtaining a start threshold value of a heater of the terminal box to be monitored. ; Based on the startup number N s and start threshold Determine the time period to be monitored, wherein if the number of heater activations reaches 2 , then this time is selected as the starting point of the heater startup statistical time period; if the number of heater startups decreases to 1.2 , then select this time as the end point of the heater startup statistical time period; The determining of the start-up factor of the terminal box in the time period to be monitored includes: calculating the average duration of heater start-up of all selected terminal boxes in the time period to be monitored; obtaining the start-up duration of the heater in each terminal box in the time period; and determining the start-up factor of each terminal box in the time period based on the start-up duration; The method of judging the operating status of the terminal box based on the starting factor includes: if the starting factor is greater than the first comparison threshold and less than the second comparison threshold, it indicates that the terminal box is in a normal operating state; if the starting factor is greater than the second comparison threshold and less than the third comparison threshold, it indicates that the terminal box is in a high-load operating state; if the starting factor is greater than the third comparison threshold, it indicates that the terminal box is in a water leakage state; if the starting factor is greater than the fourth comparison threshold and less than the first comparison threshold, it indicates that the terminal box heater is working abnormally; if the starting factor is close to the fifth comparison threshold, it indicates that the terminal box heater is faulty.

2. The method for monitoring water leakage of a transformer substation terminal box according to claim 1, characterized in that: The type of substation terminal box to be monitored is selected, including: Acquire the working area of ​​the terminal box; The type of the terminal box is determined based on the working area, and the type of the terminal box to be monitored is selected.

3. The method for monitoring water leakage of a transformer substation terminal box according to claim 1, characterized in that: The start threshold The average number of heaters activated on sunny days in the terminal box of the type to be monitored during the specified time period.

4. A water leakage monitoring device for a transformer substation terminal box, characterized in that: include: Selection module, used to select the type of terminal box to be monitored; A first determination module, used to determine a time period to be monitored; A second determination module is used to determine a start-up factor of the terminal box within a time period to be monitored, wherein the start-up factor is used to characterize a start-up probability of the terminal box during use; A judging module, used for judging the operation state of the terminal box based on the starting factor; The determining of the time period to be monitored includes: counting the number Ns of heaters started in the terminal box to be monitored; and determining the time period to be monitored based on the number; The determining of the time period to be monitored based on the quantity includes: obtaining a start threshold value of a heater of the terminal box to be monitored. ; Based on the startup number N s and start threshold Determine the time period to be monitored, wherein if the number of heater activations reaches 2 , then this time is selected as the starting point of the heater startup statistical time period; if the number of heater startups decreases to 1.2 , then select this time as the end point of the heater startup statistical time period; The determining of the start-up factor of the terminal box in the time period to be monitored includes: calculating the average duration of heater start-up of all selected terminal boxes in the time period to be monitored; obtaining the start-up duration of the heater in each terminal box in the time period; and determining the start-up factor of each terminal box in the time period based on the start-up duration; The method of judging the operating status of the terminal box based on the starting factor includes: if the starting factor is greater than the first comparison threshold and less than the second comparison threshold, it indicates that the terminal box is in a normal operating state; if the starting factor is greater than the second comparison threshold and less than the third comparison threshold, it indicates that the terminal box is in a high-load operating state; if the starting factor is greater than the third comparison threshold, it indicates that the terminal box is in a water leakage state; if the starting factor is greater than the fourth comparison threshold and less than the first comparison threshold, it indicates that the terminal box heater is working abnormally; if the starting factor is close to the fifth comparison threshold, it indicates that the terminal box heater is faulty.

5. A seat belt storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for monitoring water leakage of a substation terminal box according to any one of claims 1 to 3 are implemented.

6. 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 steps of the method for monitoring water leakage of a substation terminal box according to any one of claims 1 to 3 when executing the computer program on the memory.

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