Flood disaster monitoring and warning method for power equipment and facilities

Abstract

The invention discloses a flood disaster monitoring and warning method for power equipment and facilities, relates to the technical field of flood disaster monitoring, and solves the problems that the warning judgment information is limited and the severity of disasters such as the equipment damage degree, the power failure range and the number of affected users cannot be accurately reflected due to a single warning mode in the prior art. The method comprises the following steps: firstly, acquiring the submerging range and water depth of flood in the future time, and geographic information and equipment information of equipment; then, based on the flood influence range and the water depth, in combination with the geographic information and the equipment information of the power equipment, determining the influence range of the flood disaster on the power equipment; a flood influence degree coefficient is obtained by combining key information such as equipment damage degree, a power failure range and the number of affected users, and then alarms of different levels are given based on the flood influence degree coefficient capable of reflecting comprehensive flood influence, so that alarm signals contain more comprehensive flood disaster influence information.

Description

Technical Field

[0001] The present invention relates to the technical field of flood disaster monitoring, and in particular to a flood disaster monitoring and alarm method for electric power equipment and facilities. Background Art

[0002] Floods are extremely destructive to power grids, severely impacting the safe and stable operation of power systems. In affected areas, floodwaters can inundate critical infrastructure such as substations and distribution rooms, causing short-circuit damage to transformers and switchgear, leading to widespread power outages. Substations, as the core hubs of power systems, house high-voltage equipment, control devices, and protective devices that require extremely high insulation performance and operating environments. Flooding not only degrades the insulation performance of these devices but can also cause short-circuit failures and even damage delicate components within them, paralyzing the entire substation and rapidly expanding the scope of the outage.

[0003] Current flood disaster monitoring systems primarily focus on post-disaster alarm functions, lacking in-depth analysis of power equipment damage and user impacts. Once a flood disaster is detected, the system can only issue a simple alarm signal, failing to provide comprehensive, differentiated alarm signals that incorporate key information such as the extent of equipment damage, the scope of the power outage, and the number of affected users. This single-minded alarm model results in limited alarm information, failing to accurately reflect the severity and priority of the disaster. Consequently, the alarm level information is unclear, making it difficult for power operations and maintenance personnel to quickly formulate targeted emergency response measures, impacting grid restoration efficiency and power supply reliability.

[0004] In view of this, a method for monitoring and warning of flood damage to power equipment and facilities is needed. Summary of the Invention

[0005] To address the problem in existing technologies where a single alarm mode results in limited alarm judgment information and an inability to accurately reflect the severity of disasters, such as the degree of equipment damage, the scope of power outages, and the number of affected users, the present invention provides a method for monitoring and alerting power equipment and facilities affected by floods. This method can combine the impact of flood disasters on power equipment with key information such as the degree of equipment damage, the scope of power outages, and the number of affected users to derive a flood impact coefficient. Based on this flood impact coefficient, which reflects the comprehensive impact of the flood, different levels of alarms are issued, ensuring that the alarm signal contains more comprehensive flood disaster impact information. The specific technical solution is as follows:

[0006] A method for monitoring and warning of flood damage to power equipment and facilities, comprising the following steps:

[0007] Obtain the flooding range and depth of the flood at a future time, as well as the geographical information and equipment information of the equipment;

[0008] Based on the flood impact range and water depth, combined with the geographical information and equipment information of each power equipment, determine the scope of each power equipment affected by the flood disaster;

[0009] Calculate and output the flood impact coefficient as follows:

[0010]

[0011] Where Z is the flood impact coefficient, S W is the flood impact range, T W is the flood impact time, S E is the impact range of the device, T E is the equipment impact time, K u_i represents the influence coefficient of the i-th user within the device's influence range, D u_i is the user level of the i-th user, R e_j is the maintenance difficulty level of the jth affected equipment, D e_j is the importance level of the jth affected device;

[0012] Different alarm ranges are set according to different flood impact coefficients, and corresponding alarm operations are performed based on the flood impact coefficients calculated in real time.

[0013] Preferably, the geographical information includes the geographical location and altitude, and the equipment information includes the equipment type, equipment insulation performance, and equipment moisture resistance.

[0014] Preferably, the specific steps for determining the scope of each power equipment affected by the flood disaster are as follows:

[0015] According to the moisture-proof performance and insulation performance of different types of power equipment, a power equipment water level table is set and stored, wherein the power equipment water level table stores the shutdown water level, damage water level, shutdown water level duration and damage water level duration of each type of power equipment;

[0016] Determine the impact range of power equipment based on the expected flooding range and depth at a future time and the water level gauge of power equipment;

[0017] Based on the affected devices, output the extent of the equipment affected by the flood.

[0018] Preferably, the electric equipment water level meter also stores the time required for maintenance of each type of electric equipment, which is represented by the average of the historical maintenance time of the electric equipment.

[0019] Preferably, the equipment affected condition is any one of the following:

[0020] (1) The water depth at the location of the power equipment reaches the shutdown water level, and the time it takes to reach the shutdown water level is not less than the duration of the shutdown water level;

[0021] (2) The water depth at the location of the electrical equipment reaches the damage level, and the time it takes to reach the damage level is not less than the duration of the damage level.

[0022] Preferably, the affected coefficient K u_i Only users within the affected range of the device are considered, ignoring users within the affected range of the flood, and the value is [0, 1]. When a user is affected by a power outage, K u_i The value of is 1. If it is not affected by power outage, then K u_i The value is 0.

[0023] Preferably, the maintenance difficulty level is determined based on the historical average maintenance time of the current equipment. The longer the maintenance time, the higher the maintenance difficulty level of the power equipment. Moreover, within the same average maintenance time range, the maintenance difficulty level of the power equipment that falls under the situation where "the water depth at the location of the power equipment reaches the shutdown water level, and the time to reach the shutdown water level is not less than the duration of the shutdown water level" is lower than that of the power equipment that falls under the situation where "the water depth at the location of the power equipment reaches the damage water level, and the time to reach the damage water level is not less than the duration of the damage water level".

[0024] Preferably, the importance level is determined by the impact range after the power outage caused by a fault in the current power equipment and the level of users affected within the impact range. The larger the impact range and the higher the level of users affected, the higher the importance level of the power equipment.

[0025] A computer-readable storage medium includes a stored program, wherein when the program is run, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned method for monitoring and alarming flood damage to power equipment and facilities.

[0026] A processor is used to run a program, wherein when the program is run, the above-mentioned method for monitoring and warning of flood disasters of electric power equipment and facilities is executed.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention first obtains the inundation range and water depth of the flood at a future moment, as well as the geographical information and equipment information of the equipment; then, based on the flood impact range and water depth, combined with the geographical information and equipment information of each power equipment, determines the range of each power equipment affected by the flood disaster; then, combined with the impact of the flood disaster on the power equipment, and then combined with key information such as the degree of equipment damage, power outage range, and the number of affected users, a flood impact degree coefficient is derived; and then, based on this flood impact degree coefficient that can reflect the comprehensive impact of the flood, different levels of alarms are issued, so that the alarm signal contains more comprehensive flood disaster impact information. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0030] Figure 1 Flow chart of the method of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0033] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0035] In one embodiment of the present invention, a method for monitoring and warning of flood damage to power equipment and facilities is provided. Figure 1 As shown, the following steps are included:

[0036] Step 1: Obtain a flood risk map to determine the expected flooding range and depth at future times. Furthermore, obtain geographic information and equipment information for each power device. Geographic information includes location (latitude and longitude) and altitude. Equipment information includes device type, insulation performance, and moisture resistance. Both insulation performance and moisture resistance are measured using pre-defined ratings.

[0037] Flood risk maps are an important non-engineering flood prevention measure. They integrate information from geography, socioeconomics, rainstorms, and flood characteristics. Through data surveys, flood calculations, and collation, they visually depict the potential inundation area and depth in a given region. This helps analyze and pre-evaluate the risks and hazards posed by floods of varying magnitudes. Compilation of flood risk maps requires the collection of remote sensing, topographic, DEM, hydrological, flood characteristics, and historical disaster data. By constructing hydrological and hydrodynamic models, real-time flood forecasting and assessment of flood risk are achieved. These maps can be obtained from local flood control and drought relief headquarters, water conservancy departments, public resource trading platforms, and other sources. Additionally, some research institutions, universities, and geographic information system platforms can also access flood risk maps.

[0038] The location and altitude of electrical equipment can be used to determine whether it will be affected by floods. This includes situations such as being unaffected, being immersed (with varying degrees of immersion), and being submerged. In addition to geographic information, equipment information can also be used to assess the extent of a device's impact. Some equipment has good moisture resistance and insulation properties, making it resistant to immersion or even submersion. However, equipment with poor moisture resistance or insulation properties may cease functioning or even become damaged and scrapped if submerged.

[0039] The following are some examples of electrical equipment to illustrate the differences in their ability to resist flooding:

[0040] Overhead transmission lines: Due to their overhead design, floods have less direct impact on them, but flood erosion may cause damage to the supporting structure, thus affecting the stability of the line.

[0041] Underground power transmission lines: Although they have a certain resistance to freshwater immersion, if they are immersed in salt water for too long or are submerged in salt water, their insulation performance may deteriorate or even short-circuit.

[0042] Substations: These substations have concentrated equipment and require high insulation performance. Once submerged by floods, a large amount of equipment may be damaged, making repairs difficult and resulting in long power outages.

[0043] Distribution box: If it adopts a moisture-proof design, it can effectively resist humid environments and reduce the impact of floods on internal equipment.

[0044] Cable branch box: It has poor moisture resistance. If it is exposed to a humid environment for a long time, the insulation performance will decrease and it is easy to cause a short circuit.

[0045] This shows that even in the same location, different types of electrical equipment can be affected very differently by floods due to differences in insulation performance and moisture resistance. Therefore, when conducting flood risk assessments, it is necessary to adopt a targeted assessment approach based on the characteristics of specific equipment types.

[0046] Step 2: Based on the flood impact range and water depth, combined with the geographic information and equipment information of each power equipment, determine the scope of each power equipment affected by the flood disaster.

[0047] The specific implementation of this step is as follows:

[0048] S1: According to the moisture-proof performance and insulation performance of different types of power equipment, a power equipment water level table is set and stored, wherein the power equipment water level table stores the shutdown water level, damage water level, shutdown water level duration and damage water level duration of each type of power equipment.

[0049] The shutdown water level indicates that the current power equipment will not be able to continue working at the shutdown water level, but it has not reached a serious situation such as being scrapped, and the degree of damage is smaller than that at the damage water level. The damage water level indicates that the current power equipment will be seriously damaged such as being scrapped at the damage water level. The shutdown water level duration describes that the current power equipment will only shut down after a certain duration at the shutdown water level, and the duration here is the shutdown water level duration. Similarly, the damage water level duration describes that the current power equipment will only be damaged after a certain duration at the damage water level, and the duration here is the damage water level duration.

[0050] In addition, the electric power equipment water level table further stores the time required for maintenance of each type of electric power equipment, which is represented by the average of the historical maintenance time of the electric power equipment.

[0051] S2: Based on the flooding range and depth at a future time, and using the power equipment water level table, determine the impact range of the power equipment. The criteria for this determination include not only the water depth within the flooding range, but also the duration of the flooding of the power equipment. Specifically, the equipment must be affected by any of the following conditions:

[0052] 1. The water depth at the location of the power equipment reaches the shutdown water level, and the time it takes to reach the shutdown water level is not less than the duration of the shutdown water level;

[0053] 2. The water depth at the location where the power equipment is located reaches the damage level, and the time it takes to reach the damage level is not less than the duration of the damage level.

[0054] Taking into account the duration of flooding of electrical equipment (including immersion of part of the structure) is because some electrical equipment will not stop working or be damaged immediately after being flooded. For some electrical equipment with good insulation or moisture-proof performance, it may take a period of time after being flooded before it stops working or is damaged. For example, underground transmission lines.

[0055] S3: Output the extent of equipment affected by the flood disaster based on the affected equipment.

[0056] Step 3: Calculate and output the flood impact coefficient;

[0057] The flood impact coefficient reflects the flood impact range and duration, equipment impact range and duration, number of affected users and corresponding levels, and maintenance difficulty. The specific calculation of the flood impact coefficient is as follows:

[0058]

[0059] Where Z is the flood impact coefficient, S W is the flood impact range, expressed as flood impact area, T W is the flood impact time, S E The impact range of the equipment is expressed by the area of the power outage caused by the shutdown of the affected equipment. E The equipment impact time is expressed by the repair time of the equipment with the longest repair time among all affected equipment plus the flood impact time. K u_i represents the influence coefficient of the i-th user within the device's influence range, D u_i is the user level of the i-th user, R e_j is the maintenance difficulty level of the jth affected equipment, D e_j is the importance level of the jth affected device.

[0060] Among them, the affected coefficient K mentioned in the above formula is u_i Only users within the impact range of the equipment are considered, not those within the impact range of the flood. This is because the formula focuses on reflecting the impact of power equipment and the degree of impact. Although the impact of flood disasters is also included, it is only one item (mainly the first item "S W ·T W ”) will not be affected by K u_i The repeated impact in the term of , in order to reduce the reflection of the flood itself and increase the impact of the power equipment affected by the flood.u_i The value of is [0, 1]. When the user is affected, K u_i The value of is 1. If it is not affected, then K u_i The value is 0. The impact mentioned here refers to whether the current user is affected by the power outage, that is, whether the current user has self-generated and self-used distributed power supply or other power storage or power output, which is sufficient to supply its own use. Such customers are not affected by the power outage, so the impact coefficient K u_i The value of is zero, and the remaining users who will lose power supply due to power outage will be affected by the coefficient K u_i The value of is 1.

[0061] User Level D u_i Depending on the importance of the user, in this embodiment, registrations are first allocated based on different user categories (for example, important institutions such as hospitals and schools are assigned a high level). Then, based on different user types, pre-set user levels are incorporated into the calculation formula. In practice, user levels can be allocated based on the specific nature of each user in the current area. Various user level allocation methods exist for reference, so we will not elaborate on them here.

[0062] Repair difficulty level R e_j and importance level D e_j The definitions are also made by relevant personnel based on the different situations of each type of power equipment. When calculating, the pre-set coefficients can be directly brought in. No further details are given here. A definition principle is provided for reference only, and this reference is not intended to limit this application.

[0063] One definition principle is as follows: the maintenance difficulty level is determined based on the historical average maintenance time of the current equipment. The longer the maintenance time, the higher the maintenance difficulty level of the power equipment. On this basis, within the same average maintenance time range, if the water depth at the location of the power equipment reaches the shutdown water level, and the time it takes to reach the shutdown water level is not less than the duration of the shutdown water level, then its maintenance difficulty level is lower than that of the situation where the water depth at the location of the power equipment reaches the damage water level, and the time it takes to reach the damage water level is not less than the duration of the damage water level. The importance level is determined by the scope of impact after the power outage due to a fault in the current power equipment and the level of users affected within the affected scope. The larger the impact range and the higher the level of the affected users, the higher the importance level of the power equipment.

[0064] Step 4: Perform an alarm operation based on the flood impact coefficient.

[0065] Different alarm ranges are set according to different flood impact coefficients. When the real-time calculated flood impact coefficient falls into a certain alarm range, the alarm measures corresponding to the alarm range are activated, including sending alarm text messages to relevant personnel, calling alarm numbers to relevant departments, etc.

[0066] To sum up, the present invention first obtains the inundation range and water depth of the flood at a future moment, as well as the geographical information and equipment information of the equipment; then, based on the flood impact range and water depth, combined with the geographical information and equipment information of each power equipment, determines the impact range of each power equipment affected by the flood disaster; and then combines the impact of the flood disaster on the power equipment, and then combines key information such as the degree of equipment damage, power outage range, and the number of affected users to derive the flood impact degree coefficient, and then based on this flood impact degree coefficient that can reflect the comprehensive impact of the flood, different levels of alarms are issued, so that the alarm signal contains more comprehensive flood disaster impact information.

[0067] Those skilled in the art will appreciate that the units of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition of each example has been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0068] In the embodiments provided by the present invention, it should be understood that the division of units is merely a logical function division, and there may be other division methods in actual implementation, for example, multiple units can be combined into one unit, one unit can be split into multiple units, or some features can be ignored, etc.

[0069] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0070] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-0nly Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc., various media that can store program code.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A method for monitoring and warning of flood damage to power equipment and facilities, characterized in that: The following steps are involved: Obtain the flooding range and depth of the flood at a future time, as well as the geographical information and equipment information of the equipment; Based on the flood impact range and water depth, combined with the geographical information and equipment information of each power equipment, determine the scope of each power equipment affected by the flood disaster; Calculate and output the flood impact coefficient as follows: Where Z is the flood impact coefficient, S W is the flood impact range, T W is the flood impact time, S E is the impact range of the device, T E is the equipment impact time, K u_i represents the influence coefficient of the i-th user within the device's influence range, D u_i is the user level of the i-th user, R e_j is the maintenance difficulty level of the jth affected equipment, D e_j is the importance level of the jth affected device; Different alarm ranges are set according to different flood impact coefficients, and corresponding alarm operations are performed based on the flood impact coefficients calculated in real time.

2. A method for monitoring and warning of flood damage to power equipment and facilities according to claim 1, characterized in that: Geographic information includes geographical location and altitude, and equipment information includes equipment type, equipment insulation performance, and equipment moisture resistance.

3. A method for monitoring and warning of flood damage to power equipment and facilities according to claim 1, characterized in that: The specific steps to determine the scope of each power equipment affected by flood disasters are as follows: According to the moisture-proof performance and insulation performance of different types of power equipment, a power equipment water level table is set and stored, wherein the power equipment water level table stores the shutdown water level, damage water level, shutdown water level duration and damage water level duration of each type of power equipment; Determine the impact range of power equipment based on the expected flooding range and depth at a future time and the water level gauge of power equipment; Based on the affected devices, output the extent of the equipment affected by the flood.

4. A method for monitoring and warning of flood damage to power equipment and facilities according to claim 3, characterized in that: The electric power equipment water level meter also stores the time required for maintenance of each type of electric power equipment, which is represented by the average of the historical maintenance time of each type of electric power equipment.

5. A method for monitoring and warning of flood damage to power equipment and facilities according to claim 3, characterized in that: The device is affected by any of the following conditions: (1) The water depth at the location of the power equipment reaches the shutdown water level, and the time it takes to reach the shutdown water level is not less than the duration of the shutdown water level; (2) The water depth at the location of the electrical equipment reaches the damage level, and the time it takes to reach the damage level is not less than the duration of the damage level.

6. A method for monitoring and warning of flood damage to power equipment and facilities according to claim 1, characterized in that: The affected coefficient K u_i Only users within the affected range of the device are considered, ignoring users within the affected range of the flood, and the value is [0, 1]. When a user is affected by a power outage, K u_i The value of is 1. If it is not affected by power outage, then K u_i The value is 0.

7. A method for monitoring and warning of flood damage to power equipment and facilities according to claim 5, characterized in that: The maintenance difficulty level is determined based on the historical average maintenance time of the current equipment. The longer the maintenance time, the higher the maintenance difficulty level of the power equipment. Moreover, within the same average maintenance time range, the maintenance difficulty level of power equipment that falls under the situation where "the water depth at the location of the power equipment reaches the shutdown water level, and the time it takes to reach the shutdown water level is not less than the duration of the shutdown water level" is lower than that of power equipment that falls under the situation where "the water depth at the location of the power equipment reaches the damage water level, and the time it takes to reach the damage water level is not less than the duration of the damage water level." 8. The method for monitoring and warning of flood damage to electric power equipment and facilities according to claim 1, characterized in that: The importance level is determined by the impact range of power outage caused by current power equipment failure and the level of users affected within the impact range. The larger the impact range and the higher the level of affected users, the higher the importance level of the power equipment.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for monitoring and alarming flood damage to electric power equipment and facilities according to any one of claims 1 to 8.

10. A processor, characterized in that: The processor is used to run a program, wherein the program, when running, executes the method for monitoring and alarming flood damage to electric power equipment and facilities as described in any one of claims 1 to 8.

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