Operation and maintenance inspection method and device based on electric power scene model

Abstract

The invention relates to the technical field of electric power operation and maintenance, in particular to an operation and maintenance inspection method based on an electric power scene model. Comprising the following steps: dividing each piece of power equipment in a power system into a plurality of causality units according to causality; wherein the number of the battery devices in the causality unit is not less than two, and the output of at least one power device in the same causality unit is used as the input of other power devices; according to the input data and the output data of each power device in the causality unit, establishing a power scene sub-model corresponding to the input data and the output data; establishing an electric power scene model according to the input data and the output data of the electric power scene sub-model and the input data and the output data of electric power equipment without causality in the electric power system; performing inspection on the causality unit in sequence according to the plurality of power scene sub-models; and inspecting the power system according to the power scene model. According to the invention, computing power resources can be saved during electric power inspection.

Description

Technical Field

[0001] The present invention relates to the field of electric power operation and maintenance technology, and in particular to an operation and maintenance inspection method and device based on an electric power scenario model. Background Art

[0002] The power system includes a variety of power equipment, and regular maintenance and inspection are required for the power equipment of the entire power system. However, in the existing technology, when performing inspections, all power equipment in the entire power system is inspected, which consumes a lot of computing resources. Summary of the invention

[0003] The embodiments of the present invention provide an operation and maintenance inspection method, device, electronic device and storage medium based on an electric power scenario model, which can save computing resources during electric power inspection.

[0004] In a first aspect, an embodiment of the present invention provides an operation and maintenance inspection method based on a power scenario model, comprising: Divide each power device in the power system into a plurality of causal units according to causality; wherein the number of battery devices in the causal unit is not less than two, and the output of at least one power device in the same causal unit serves as the input of other power devices; Establishing a corresponding power scenario sub-model according to the input data and output data of each power device in the causal unit; Establishing a power scenario model according to the input data and output data of the power scenario sub-model and the input data and output data of the power equipment in the power system that does not have causality; Conducting inspections on the causal units in sequence according to the plurality of power scenario sub-models; The power system is inspected according to the power scenario model.

[0005] In a possible design, inspecting the causal unit in sequence according to the plurality of power scenario sub-models includes: Performing a screening operation among the plurality of causal units that have not been inspected, and determining a causal unit to be inspected; Performing an inspection operation on the causal unit to be inspected; The screening operation and the inspection operation are repeated until the inspection of all the causal units is completed.

[0006] In one possible design, the screening operation includes: According to the difference Δq between the total computing power Q of the power system and the real-time computing amount q1 of the power system, the causal units whose data amount qi to be calculated is lower than Δq are screened out; wherein, i=1, 2…N, N is the number of the causal units. When the causal unit inspection starts, each uninspected qi is traversed and screened according to the screening condition Δq-qi≥0. For all qi that pass the screening, the causal units to be inspected are determined according to the minimum formula q0=argmin(Δq-qi). If no qi passes the screening, the screening is performed again after q1 is reduced by the preset threshold.

[0007] In one possible design, the inspection operation includes: Collect input data of the power equipment as the cause and output data of the power equipment as the effect in the causal unit, use the input data of the power equipment as the cause as the input data of the corresponding power scenario sub-model, the power scenario sub-model obtains output data based on the input data, compare the output data of the power equipment as the effect in the causal unit with the output data output by the power scenario sub-model, and make a judgment based on the comparison result; wherein, the input data and the output data include power time series data and temperature time series data.

[0008] In a possible design, when the difference between the output data of the causal unit and the output data of the power scenario sub-model is greater than a preset difference, after maintenance, the input data and output data of each power device in the causal unit are re-collected to establish a new power scenario sub-model; The power scenario model is updated according to the new power scenario sub-model.

[0009] In a possible design, inspecting the power system according to the power scenario model includes: Determine the idle time period of the power system based on historical data; During the idle time period, the power scenario model is used to calculate data of each non-causal power device of the power system; Collecting actual data of each non-causal power device of the power system; Whether the non-causal power device is faulty is determined according to actual data of the non-causal power device and data calculated by the power scenario model.

[0010] In one possible design, it also includes: Collect load-side data of the power system; When the load-end data is lower than a preset load, performing a full-power test on the power equipment and / or the non-causal power equipment in the causal unit; The power scenario sub-model and / or the power scenario model is optimized according to the result of the full power test.

[0011] In a second aspect, an embodiment of the present invention further provides an operation and maintenance inspection device based on a power scenario model, which is used to implement any of the above methods, and the device includes: A first unit is used to divide each power device in the power system into a plurality of causal units according to causality; wherein the number of battery devices in the causal unit is not less than two, and the output of at least one power device in the same causal unit serves as the input of other power devices; The second unit is used to establish a corresponding power scenario sub-model according to the input data and output data of each power device in the causal unit; A third unit is used to establish a power scenario model according to the input data and output data of the power scenario sub-model and the input data and output data of the power equipment without causality in the power system; A fourth unit is used to inspect the causal unit in sequence according to the plurality of power scenario sub-models; The fifth unit is used to inspect the power system according to the power scenario model.

[0012] In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method described in any embodiment of this specification is implemented.

[0013] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed in a computer, enables the computer to execute the method described in any embodiment of this specification.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In this embodiment, multiple power equipment are divided into causal units composed of multiple causal power equipment and non-causal power equipment that are not causal with other power equipment according to causality. The input data and output data of all electrical equipment in the causal unit are collected to establish a power scenario sub-model. The power scenario sub-model can simplify the data of the power equipment in the causal unit into input data and output data, without the need for data of the power equipment in the intermediate process. A power scenario model is established based on the power scenario sub-model and non-causal power equipment to inspect all power equipment. As the power equipment is used, its own performance may decline or there may be faults. Therefore, it is necessary to inspect the equipment inside the causal unit from time to time. If its performance declines and no maintenance is required, data is collected to update the power scenario sub-model. If it fails, it is repaired in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a flow chart of an operation and maintenance inspection method based on a power scenario model provided by an embodiment of the present invention; Figure 2 is a hardware architecture diagram of an electronic device provided by an embodiment of the present invention; Figure 3 It is a structural diagram of an operation and maintenance inspection device based on an electric power scenario model provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] The specific implementation of the above concept is described below.

[0019] Please refer to Figure 1 The embodiment of the present invention provides an operation and maintenance inspection method based on a power scenario model, comprising: Divide each power device in the power system into a plurality of causal units according to causality; wherein the number of battery devices in the causal unit is not less than two, and the output of at least one power device in the same causal unit serves as the input of other power devices; According to the input data and output data of each power device in the causal unit, a corresponding power scenario sub-model is established; Establishing a power scenario model according to input data and output data of the power scenario sub-model and input data and output data of power equipment that does not have causality in the power system; Conduct inspections on causal units in sequence according to multiple power scenario sub-models; Inspect the power system based on the power scenario model.

[0020] In this embodiment, multiple power equipment are divided into causal units composed of multiple causal power equipment and non-causal power equipment that is not causal with other power equipment according to causality. The input data and output data of all electrical equipment in the causal unit are collected to establish a power scenario sub-model. The power scenario sub-model can simplify the data of the power equipment in the causal unit into input end data and output end data, without the need for data of the power equipment in the intermediate process. A power scenario model is established based on the power scenario sub-model and non-causal power equipment to inspect all power equipment. As the power equipment is used, its own performance may decline, or there may be faults. Therefore, it is necessary to inspect the equipment inside the causal unit from time to time. If its performance declines and no maintenance is required, data is collected to update the power scenario sub-model. If it fails, it is repaired in time.

[0021] In this embodiment, the power scenario model and the power scenario sub-model can be established based on deep learning technology, which specifically includes feature data extraction, establishing a reward function, and training and optimizing the model based on the reward function.

[0022] In addition, the power scenario model can rely on historical data to make data forecasts to provide a reference for the regulation decisions of the power system.

[0023] It should be noted that non-causal power equipment is not unrelated to other power equipment. Since they are in the same power system, each electrical equipment has a certain coupling relationship to complete the power supply task of the power system.

[0024] In some embodiments of the present invention, the causal units are inspected in sequence according to a plurality of power scenario sub-models, including: Performing a screening operation among multiple causal units that have not been inspected, and determining a causal unit to be inspected; Perform inspection operations on the causal unit to be inspected; The screening operation and the inspection operation are repeated until the inspection of all causal units is completed.

[0025] In this embodiment, the causal units that are not inspected simultaneously can be broken down into smaller units, thus saving computing power consumption per unit time.

[0026] In some embodiments of the present invention, the screening operation includes: According to the difference Δq between the total computing power Q of the power system and the real-time computing amount q1 of the power system, the causal units whose data amount qi to be calculated is lower than Δq are screened out; wherein, i=1, 2…N, N is the number of causal units. When the causal unit inspection starts, each uninspected qi is traversed and screened according to the screening condition Δq-qi≥0. For all qi that pass the screening, the causal units to be inspected are determined according to the minimum formula q0=argmin(Δq-qi). If no qi passes the screening, the screening is performed again after q1 is reduced by the preset threshold.

[0027] In this embodiment, the inspection operation relies on the computing power provided by the power system. The surplus computing power is determined based on the total computing power Q of the power system and the real-time computing amount q1 required for power control coordination of the current power system. The causal units to be inspected are flexibly selected for inspection operations based on the surplus computing power.

[0028] In some embodiments of the present invention, the inspection operation includes: Collect input data of the power equipment as the cause and output data of the power equipment as the effect in the causal unit, use the input data of the power equipment as the cause as the input data of the corresponding power scenario sub-model, the power scenario sub-model obtains output data based on the input data, compares the output data of the power equipment as the effect in the causal unit with the output data output by the power scenario sub-model, and makes a judgment based on the comparison result; wherein, the input data and output data include power time series data and temperature time series data.

[0029] In this embodiment, the measured data and the calculated data of the model can be used to detect whether the model (electric power scenario sub-model) needs to be optimized or regenerated.

[0030] In some embodiments of the present invention, when the difference between the output data of the causal unit and the output data of the power scenario sub-model is greater than a preset difference, after maintenance, the input data and output data of each power device in the causal unit are re-collected to establish a new power scenario sub-model; The power scenario model is updated according to the new power scenario sub-model.

[0031] In some embodiments of the present invention, inspecting the power system according to the power scenario model includes: Determine the idle time period of the power system based on historical data; During off-peak hours, the power scenario model is used to calculate the data of each non-causal power device in the power system; Collect actual data of each non-causal power device in the power system; Whether the non-causal power equipment is faulty is determined based on actual data of the non-causal power equipment and data calculated by the power scenario model.

[0032] In this embodiment, using the idle time period can save computing power. Of course, inspections can also be performed during other time periods.

[0033] In some embodiments of the present invention, it further comprises: Collect load-side data of the power system; When the load-end data is lower than a preset load, a full-power test is performed on the power equipment and / or the non-causal power equipment in the causal unit; The power scenario sub-model and / or the power scenario model is optimized based on the results of the full power test.

[0034] In this embodiment, the power equipment has no abnormalities during normal use, but its performance will be reduced when used at full power. Therefore, the power system can be adjusted to make some power equipment run at full power and test its status.

[0035] In some embodiments of the present invention, the power system further includes an energy storage unit, and the energy storage unit is used to provide electrical energy for the full power test.

[0036] In the present invention, during the inspection, the vibration of the generator rotor must also be monitored. If the rotor of the generator rotates too fast, it will cause the rotor to vibrate, which will affect the service life of the equipment and have an adverse effect on the frequency modulation of the power plant. Therefore, a heating device is provided on the bearing of the rotor of the generator, and the heating device can be a resistance heating device attached to the bearing. The vibration information of the rotor can be collected in real time, and a vibration sensor can be used to collect it, and it can be determined whether to turn on the heating device based on the vibration information. Specifically, when the vibration frequency of the rotor is close to the resonance frequency, the heating device is turned on to heat the lubricating oil in the bearing, so that the viscosity of the lubricating oil becomes smaller, the system state at the rotor is changed, and then the resonance frequency is changed to prevent it from resonating. Since only the viscosity of the lubricating oil is reduced, the lubricating oil still has a certain lubricating effect, and will not significantly change the rotation speed of the rotor. At the same time, the lubricating oil still has a protective effect and will not cause obvious wear of the parts. In addition, when the amplitude of the rotor reaches a certain preset amplitude, the heating device can also be used to heat the lubricating oil in the bearing. The lubricating oil with reduced viscosity increases the friction, slightly preventing the rotation of the rotor, and at the same time stops providing power to the engine to generate electricity, so that it can slowly decelerate while maintaining a certain speed to prevent the rotor amplitude from being too large. At the same time, the power of other generators is increased to balance the power generation. It should be noted that a cooling device, such as a water cooling or air cooling device, can be set to cool the bearing after the rotor resumes stable rotation.

[0037] like Figure 2 , Figure 3 As shown, the embodiment of the present invention provides an operation and maintenance inspection device based on the power scenario model. The device embodiment can be implemented by software, or by hardware or a combination of software and hardware. From the hardware level, Figure 2 As shown in FIG. 1 , a hardware architecture diagram of an electronic device where an operation and maintenance inspection device based on a power scenario model is provided in an embodiment of the present invention is located. Figure 2 In addition to the processor, memory, network interface, and non-volatile memory shown, the electronic device in the embodiment may also include other hardware, such as a forwarding chip responsible for processing messages, etc. Taking software implementation as an example, Figure 3 As shown, as a device in a logical sense, the CPU of the electronic device in which it is located reads the corresponding computer program in the non-volatile memory into the memory and runs it. This embodiment provides an operation and maintenance inspection device based on the power scenario model, including: A first unit is used to divide each power device in the power system into a plurality of causal units according to causality; wherein the number of battery devices in the causal unit is not less than two, and the output of at least one power device in the same causal unit serves as the input of other power devices; The second unit is used to establish a corresponding power scenario sub-model according to the input data and output data of each power device in the causal unit; A third unit is used to establish a power scenario model according to the input data and output data of the power scenario sub-model and the input data and output data of the power equipment without causality in the power system; A fourth unit is used to inspect the causal unit in sequence according to the plurality of power scenario sub-models; The fifth unit is used to inspect the power system according to the power scenario model.

[0038] It is understandable that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on an operation and maintenance inspection device based on a power scenario model. In other embodiments of the present invention, an operation and maintenance inspection device based on a power scenario model may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0039] The information interaction, execution process and other contents between the modules in the above-mentioned device are based on the same concept as the embodiment of the method of the present invention. For the specific contents, please refer to the description in the embodiment of the method of the present invention, and no further description is given here.

[0040] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, an operation and maintenance inspection method based on a power scenario model in any embodiment of the present invention is implemented.

[0041] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the processor executes an operation and maintenance inspection method based on a power scenario model in any embodiment of the present invention.

[0042] Specifically, a system or device equipped with a storage medium can be provided, on which software program code that implements the functions of any of the above-mentioned embodiments is stored, and a computer (or CPU or MPU) of the system or device can be enabled to read and execute the program code stored in the storage medium.

[0043] In this case, the program code itself read from the storage medium can realize the function of any one of the above-mentioned embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.

[0044] The storage medium embodiments for providing the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (such as CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), a magnetic tape, a non-volatile memory card, and a ROM. Alternatively, the program code can be downloaded from a server computer via a communication network.

[0045] In addition, it should be clear that the functions of any of the above embodiments can be implemented not only by executing the program code read by the computer, but also by enabling an operating system operating on the computer to complete part or all of the actual operations based on instructions from the program code.

[0046] In addition, it can be understood that the program code read from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then based on the instructions of the program code, a CPU installed on the expansion board or expansion module is enabled to perform part or all of the actual operations, thereby realizing the functions of any of the above-mentioned embodiments.

[0047] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical factors in the process, method, article or device including the elements.

[0048] A person of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, etc., various media that can store program codes.

[0049] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An operation and maintenance inspection method based on a power scenario model, characterized in that: include: Divide each power device in the power system into a plurality of causal units according to causality; wherein the number of battery devices in the causal unit is not less than two, and the output of at least one power device in the same causal unit serves as the input of other power devices; Establishing a corresponding power scenario sub-model according to the input data and output data of each power device in the causal unit; Establishing a power scenario model according to the input data and output data of the power scenario sub-model and the input data and output data of the power equipment in the power system that does not have causality; Conducting inspections on the causal units in sequence according to the plurality of power scenario sub-models; The power system is inspected according to the power scenario model.

2. The method according to claim 1, characterized in that The inspecting the causal unit in sequence according to the plurality of power scenario sub-models comprises: Performing a screening operation among the plurality of causal units that have not been inspected, and determining a causal unit to be inspected; Performing an inspection operation on the causal unit to be inspected; The screening operation and the inspection operation are repeated until the inspection of all the causal units is completed.

3. The method according to claim 2, characterized in that The screening operation includes: According to the difference Δq between the total computing power Q of the power system and the real-time computing amount q1 of the power system, the causal units whose data amount qi to be calculated is lower than Δq are screened out; wherein, i=1, 2…N, N is the number of the causal units. When the causal unit inspection starts, each uninspected qi is traversed and screened according to the screening condition Δq-qi≥0. For all qi that pass the screening, the causal units to be inspected are determined according to the minimum formula q0=argmin(Δq-qi). If no qi passes the screening, the screening is performed again after q1 is reduced by the preset threshold.

4. The method according to claim 2, characterized in that: The inspection operation includes: Collect input data of the power equipment as the cause and output data of the power equipment as the effect in the causal unit, use the input data of the power equipment as the cause as the input data of the corresponding power scenario sub-model, the power scenario sub-model obtains output data based on the input data, compare the output data of the power equipment as the effect in the causal unit with the output data output by the power scenario sub-model, and make a judgment based on the comparison result; wherein, the input data and the output data include power time series data and temperature time series data.

5. The method according to claim 4, characterized in that When the difference between the output data of the causal unit and the output data of the power scenario sub-model is greater than a preset difference, after maintenance, the input data and output data of each power device in the causal unit are re-collected to establish a new power scenario sub-model; The power scenario model is updated according to the new power scenario sub-model.

6. The method according to any one of claims 1 to 5, characterized in that: The inspecting the power system according to the power scenario model includes: Determine the idle time period of the power system based on historical data; During the idle time period, the power scenario model is used to calculate data of each non-causal power device of the power system; Collecting actual data of each non-causal power device of the power system; Whether the non-causal power device is faulty is determined according to actual data of the non-causal power device and data calculated by the power scenario model.

7. The method according to claim 1, characterized in that Also includes: Collect load-side data of the power system; When the load-end data is lower than a preset load, performing a full-power test on the power equipment and / or the non-causal power equipment in the causal unit; The power scenario sub-model and / or the power scenario model is optimized according to the result of the full power test.

8. An operation and maintenance inspection device based on a power scenario model, characterized in that: For implementing the method according to any one of claims 1 to 7, the device comprises: A first unit is used to divide each power device in the power system into a plurality of causal units according to causality; wherein the number of battery devices in the causal unit is not less than two, and the output of at least one power device in the same causal unit serves as the input of other power devices; The second unit is used to establish a corresponding power scenario sub-model according to the input data and output data of each power device in the causal unit; A third unit is used to establish a power scenario model according to the input data and output data of the power scenario sub-model and the input data and output data of the power equipment without causality in the power system; A fourth unit is used to inspect the causal unit in sequence according to the plurality of power scenario sub-models; The fifth unit is used to inspect the power system according to the power scenario model.

9. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, which, when executed in a computer, causes the computer to execute the method according to any one of claims 1 to 7.

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