Feeder group power supply switching capability evaluation method and device and power supply switching capability evaluation system

Abstract

The invention provides a feeder group power supply switching capability evaluation method and device and a power supply switching capability evaluation system, and the method comprises the steps: obtaining the magnitude of current of a power distribution network passing through each feeder at a plurality of historical moments, and obtaining a plurality of historical current values of each feeder; determining a power supply conversion current value of each feeder line according to the plurality of historical current values of each feeder line, wherein the power supply conversion current value is the magnitude of current passing through the feeder line in the power supply conversion process; the conversion power supply current value in the historical current values is deleted, the actual current value of each feeder line is obtained, and the actual current value is the magnitude of current passing through the feeder line when the feeder line is not connected with other feeder lines; and according to the actual current value and the current limiting value of each feeder line of the feeder line group, whether the feeder line group meets the complete power supply conversion capability is evaluated, and the complete power supply conversion capability is the capability that any feeder line of the feeder line group can bear all current magnitudes of the feeder line group. According to the method, the problem of inaccurate judgment of the actual complete transfer power supply capability of the feeder group in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of power evaluation, and in particular to a method and device for evaluating the power transfer capability of a feeder group, a computer-readable storage medium, a computer program product, and a power transfer capability evaluation system. Background Art

[0002] In the current distribution network system operation data management practice, we can derive the operating current values ​​of each feeder from the system. These values ​​are the actual collected operating data. However, these actually collected operating current values ​​are likely to be affected by the power transfer. These data reflect the operating current of the feeder group, not necessarily the current data of the line itself. For the planning analysis and system operation analysis of the distribution network, we hope to obtain the maximum current value of each line itself, so that it is more convenient to calculate and analyze, so as to accurately evaluate the actual power transfer capacity of the feeder group.

[0003] At present, neither data centers nor big data platforms such as distribution network technical management support platforms have this function. The calculations and analysis work involved need to be handled manually, which is not only time-consuming but also labor-intensive. System operation professionals and power grid planning professionals across the province are in urgent need of this function. By combining the calculation and analysis of the topological ring network lines and the actual operating current of the feeder, it is possible to more accurately evaluate whether the feeder group meets the full power transfer capacity, avoiding the impact of the power transfer when the system collects current value data and resulting in the inability to accurately evaluate the power transfer capacity of the feeder group. This effectively improves the work efficiency of data analysts and can more accurately judge the full power transfer capacity of the feeder group. Summary of the invention

[0004] The main purpose of the present application is to provide a method, device, computer-readable storage medium, computer program product and power transfer capacity evaluation system for a feeder group, so as to at least solve the problem of inaccurate judgment on the actual complete power transfer capacity of a feeder group in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a method for evaluating the power supply transfer capacity of a feeder group is provided, including: obtaining the current passing through each feeder of the distribution network at multiple historical moments to obtain multiple historical current values ​​of each feeder; determining the power supply current value of each feeder according to the multiple historical current values ​​of each feeder, the power supply current value being the current passing through the feeder during the power supply transfer process; deleting the power supply current value in the historical current values ​​to obtain the actual current value of each feeder, the actual current value being the current passing through the feeder when the feeder is not connected to other feeders; based on the actual current value and current limiting value of each feeder of the feeder group, evaluating whether the feeder group meets the full power supply capacity, the full power supply capacity being the ability of any one of the feeders of the feeder group to carry all the current of the feeder group.

[0006] Optionally, determining the transfer power supply current value of each feeder according to the multiple historical current values ​​of each feeder includes: acquiring multiple historical closing times of each connecting switch between each feeder; determining the current value of each feeder at the multiple historical closing times from the multiple historical current values ​​according to the multiple historical closing times of each connecting switch, and determining the current value as the transfer power supply current value.

[0007] Optionally, based on the actual current value and the current limiting value of each feeder in the feeder group, evaluating whether the feeder group meets the full power transfer capacity includes: determining each feeder group in the distribution network based on the connection relationship between each feeder in the distribution network; calculating the sum of the actual current values ​​of each feeder to obtain the actual carrying current value of the feeder group; obtaining the current limiting value of each feeder, and judging whether the feeder group meets the full power transfer capacity based on the current limiting value and the actual carrying current value.

[0008] Optionally, the current limiting value of each of the feeders is obtained, and whether the feeder group meets the full power transfer capacity is judged according to the current limiting value and the actual carrying current value, including: when the actual carrying current value of the feeder group is less than the current limiting value corresponding to each of the feeders, the feeder group meets the full power transfer capacity; when the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the feeder, the feeder group does not meet the full power transfer capacity.

[0009] Optionally, when the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the target feeder, the load distribution on the load side of the target feeder is adjusted, and the target feeder is any one of the feeders in the feeder group.

[0010] Optionally, before determining the power supply current value of each feeder according to the multiple historical current values ​​of each feeder, the method further includes: deleting abnormal current values ​​in the historical current values.

[0011] According to another aspect of the present application, a feeder group power transfer capacity evaluation device is provided, comprising: a first acquisition unit, used to acquire the current amount passing through each feeder of the distribution network at multiple historical moments, and obtain multiple historical current values ​​of each feeder; a first determination unit, used to determine the power transfer current value of each feeder according to the multiple historical current values ​​of each feeder, and the power transfer current value is the current amount passing through the feeder during the power transfer process; a first deletion unit, used to delete the power transfer current value in the historical current values, and obtain the actual current value of each feeder, and the actual current value is the current amount passing through the feeder when the feeder is not connected to other feeders; a second determination unit, used to evaluate whether the feeder group meets the full power transfer capacity according to the actual current value and the current limiting value of each feeder of the feeder group, and the full power transfer capacity is the ability of any one of the feeders of the feeder group to carry all the current amounts of the feeder group.

[0012] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the method described in any one of the devices where the computer-readable storage medium is located is controlled.

[0013] According to another aspect of the present application, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, any one of the methods described above is implemented.

[0014] According to another aspect of the present application, a feeder group power supply capacity assessment system is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of the described methods.

[0015] Applying the technical solution of the present application, in the above-mentioned method for evaluating the power transfer capacity of a feeder group, the method includes: obtaining the current amount passing through each feeder of the distribution network at multiple historical moments to obtain multiple historical current values ​​of each of the above-mentioned feeders; determining the power transfer current value of each of the above-mentioned feeders according to the multiple historical current values ​​of each of the above-mentioned feeders, the above-mentioned power transfer current value is the current amount passing through the above-mentioned feeder during the power transfer process; deleting the above-mentioned power transfer current value in the above-mentioned historical current values ​​to obtain the actual current value of each of the above-mentioned feeders, the above-mentioned actual current value is the current amount passing through the above-mentioned feeder when the above-mentioned feeder is not connected to other feeders; according to the above-mentioned actual current value and the current limiting value of each of the above-mentioned feeders of the feeder group, evaluating whether the above-mentioned feeder group meets the full power transfer capacity, the above-mentioned full power transfer capacity is the ability of any one of the above-mentioned feeders of the above-mentioned feeder group to carry all the current amounts of the above-mentioned feeder group. The present application collects historical current amounts passing through each feeder in the distribution network, and deletes the transfer power supply current values ​​passing through each feeder from the historical current values ​​to obtain actual current values ​​passing through each feeder. By analyzing the actual current values ​​of each feeder in the feeder group and the current limiting values ​​of each feeder, it is possible to more accurately evaluate whether the feeder group meets the full transfer power supply capacity, thereby avoiding the inability to accurately evaluate the transfer power supply capacity of the feeder group due to the influence of the transfer power supply when the system collects current value data, and solving the problem of inaccurate judgment on the actual full transfer power supply capacity of the feeder group in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for evaluating a feeder group power supply capability according to an embodiment of the present application is shown;

[0017] Figure 2 A schematic diagram of a flow chart of a method for evaluating the power supply transfer capability of a feeder group provided according to an embodiment of the present application is shown;

[0018] Figure 3 A structural block diagram of a feeder group power supply capability assessment device provided according to an embodiment of the present application is shown.

[0019] The above drawings include the following reference numerals:

[0020] 102, processor; 104, memory; 106, transmission device; 108, input and output devices. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] As introduced in the background technology, in the prior art, the current passing through the feeder is affected by the power transfer, resulting in the collected current value not necessarily being the current data of the feeder itself, thereby affecting the judgment of the full power transfer capability. To solve this technical problem, the embodiments of the present application provide a feeder group power transfer capability evaluation method, device, computer-readable storage medium, computer program product and power transfer capability evaluation system.

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a feeder group power supply capacity evaluation method according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as a computer program corresponding to a feeder group power supply capacity assessment method in an embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The above-mentioned specific network example may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0028] In this embodiment, a method for evaluating the power supply capacity of a feeder group running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] Figure 2 1 is a flow chart of a method for evaluating the power supply capability of a feeder group according to an embodiment of the present application. Figure 2 As shown, the method comprises the following steps:

[0030] Step S201, obtaining the current amount passing through each feeder of the distribution network at multiple historical moments, and obtaining multiple historical current values ​​of each of the above feeders;

[0031] Specifically, by collecting historical current data of the distribution network, we can obtain a series of current records of feeders at different time points, providing data support for subsequent power transfer capacity analysis.

[0032] Step S202, determining a power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the power supply current value is the amount of current passing through the feeder during the power supply transfer process;

[0033] Specifically, multiple historical current values ​​of each feeder are obtained by collecting historical current data of the distribution network, wherein the multiple historical current values ​​include the current flowing through the feeder when the feeder is operating alone and the transfer current value, that is, the current passing through the feeder during the transfer current value, that is, the transfer current value is determined in the historical current values.

[0034] Step S203, deleting the power supply current value in the historical current value, and obtaining the actual current value of each of the feeders, where the actual current value is the current passing through the feeder when the feeder is not connected to other feeders;

[0035] Specifically, by screening and eliminating those current values ​​generated by power transfer, we can obtain independent current data of each feeder when it is not connected to other feeders. These data reflect the real current load of the feeder. Through this processing method, the accuracy of the current data is improved, providing more reliable data for the management of the distribution network.

[0036] Step S204, evaluating whether the feeder group meets the full power transfer capacity based on the actual current value and the current limit value of each of the feeders of the feeder group, where the full power transfer capacity is the ability of any one of the feeders of the feeder group to carry all the current of the feeder group.

[0037] Specifically, based on the actual current value and rated current limit value of each feeder, we can evaluate whether the entire feeder group has complete power transfer capabilities, that is, determine whether any single feeder can independently bear the current load of the entire feeder group. Through this evaluation, we can ensure that when a power grid failure occurs or maintenance is required, power can be quickly and safely redistributed, thereby improving the flexibility of the power grid and the continuity of power supply.

[0038] Through this embodiment, in the above-mentioned feeder group power transfer capacity evaluation method, the current amount passing through each feeder of the distribution network at multiple historical moments is obtained to obtain multiple historical current values ​​of each of the above-mentioned feeders; the power transfer current value of each of the above-mentioned feeders is determined according to the multiple historical current values ​​of each of the above-mentioned feeders, and the above-mentioned power transfer current value is the current amount passing through the above-mentioned feeder during the power transfer process; the above-mentioned power transfer current value in the above-mentioned historical current value is deleted to obtain the actual current value of each of the above-mentioned feeders, and the above-mentioned actual current value is the current amount passing through the above-mentioned feeder when the above-mentioned feeder is not connected to other feeders; according to the above-mentioned actual current value and the current limiting value of each of the above-mentioned feeders of the feeder group, it is evaluated whether the above-mentioned feeder group meets the full power transfer capacity, and the above-mentioned full power transfer capacity is the ability of any one of the above-mentioned feeders of the above-mentioned feeder group to carry all the current amounts of the above-mentioned feeder group. The present application collects historical current amounts passing through each feeder in the distribution network, and deletes the transfer power supply current values ​​passing through each feeder from the historical current values ​​to obtain actual current values ​​passing through each feeder. By analyzing the actual current values ​​of each feeder in the feeder group and the current limiting values ​​of each feeder, it is possible to more accurately evaluate whether the feeder group meets the full transfer power supply capacity, thereby avoiding the inability to accurately evaluate the transfer power supply capacity of the feeder group due to the influence of the transfer power supply when the system collects current value data, and solving the problem of inaccurate judgment on the actual full transfer power supply capacity of the feeder group in the prior art.

[0039] In order to determine the transfer power supply current value from the historical current value, in an optional implementation manner, the transfer power supply current value of each of the above feeders is determined according to a plurality of the above historical current values ​​of each of the above feeders, and the above step S202 includes:

[0040] Step S2021, obtaining a plurality of historical closing times of each tie switch between each of the above feeders;

[0041] Specifically, multiple closing time points of the tie switches between the feeders are collected and recorded, and the transfer power supply current generated by the tie switch operation is identified through the multiple closing time points of the tie switches, so as to accurately separate the transfer power supply current value from the historical current value later.

[0042] Step S2022: determining the current value of each of the feeders at the multiple historical closing times from the multiple historical current values ​​according to the multiple historical closing times of each of the tie switches, and determining the current value as the transfer power supply current value.

[0043] Specifically, at multiple historical closing time points of each interconnecting switch, we screen and match the corresponding historical current data to accurately identify the current value of each feeder at these specific moments and mark it as the transfer current value. This process achieves accurate classification of current data, which helps to achieve more refined current management and more effective fault handling in power grid operation.

[0044] In order to more accurately evaluate whether the feeder group meets the full power transfer capability, in an optional implementation, based on the actual current value and the current limit value of each of the feeders of the feeder group, it is evaluated whether the feeder group meets the full power transfer capability, and the step S204 includes:

[0045] Step S2041, determining each of the feeder groups in the distribution network based on the connection relationship between the feeders in the distribution network;

[0046] Specifically, each feeder group is clearly divided according to the interconnection relationship between the feeders in the distribution network. In this way, we can comprehensively evaluate the actual carrying current value and current limiting value of the feeder group.

[0047] Step S2042, calculating the sum of the actual current values ​​of the feeders to obtain the actual carrying current value of the feeder group;

[0048] Specifically, by accumulating the actual current value of each feeder, we obtain the actual carrying current value of the entire feeder group. Through this process, we avoid the situation where the total current of the feeder group calculated is too large due to the influence of the feeder in the feeder group being affected by the transferred power supply, and thus causing misjudgment. By performing various current management calculations in the distribution network based on the actual carrying current of the feeder group obtained, we can effectively prevent the occurrence of overload, thereby ensuring the safe and stable operation of the power grid.

[0049] Step S2043, obtaining the current limiting value of each of the above feeders, and judging whether the above feeder group meets the full power transfer capability according to the current limiting value and the actual carrying current value.

[0050] Specifically, by collecting the current limiting value of each feeder and combining it with the actual current carrying value of the feeder group, we can evaluate whether the feeder group has the ability to fully assume the power transfer capacity. This method can effectively evaluate the power supply reliability of the power grid in emergency situations, ensure that the power grid can safely and effectively transfer electricity in the event of a failure or maintenance, reduce the risk of power outages, and improve the overall stability and power supply quality of the power grid.

[0051] In order to determine whether the feeder group meets the full power transfer capability, in an optional implementation, the current limiting value of each of the feeders is obtained, and whether the feeder group meets the full power transfer capability is judged according to the current limiting value and the actual carrying current value, and the step S2043 includes:

[0052] Step S20431, when the actual carrying current value of the feeder group is less than the current limiting value corresponding to each of the feeders, the feeder group meets the full power transfer capability;

[0053] Specifically, the current limiting value of each feeder is obtained and compared with the actual carrying current value of the feeder group. If the actual carrying current value of the feeder group does not exceed the current limiting value of any feeder, then it can be determined that the feeder group has the ability to fully transfer power. This judgment method can ensure that when a power grid fails, power can be quickly and safely redistributed, reducing power outage time and improving the flexibility of the power grid and the continuity of power supply.

[0054] Step S20432: When the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the feeder, the feeder group does not meet the full power transfer capability.

[0055] Specifically, if the actual carrying current value of the feeder group exceeds the current limit value of any feeder, it means that the feeder group cannot meet the requirements of full power transfer, and the feeders in the feeder group may be overloaded, posing a safety hazard. This assessment helps to identify potential bottlenecks and risk points of each feeder group in the power grid, so as to take preventive measures during power grid planning and operation.

[0056] In order to prevent the feeder from being overloaded, in an optional implementation manner, the method further includes:

[0057] Step S301, when the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the target feeder, adjust the load distribution on the load side of the target feeder, the target feeder being any one of the feeders in the feeder group.

[0058] Specifically, in order to prevent feeder overload, when it is detected that the current limiting value of any feeder in the feeder group exceeds the actual carrying current value of the feeder group, the load of this target feeder is redistributed. The implementation of this strategy enables the power grid to adjust the power distribution in time when facing the risk of overload, reduce the burden on overloaded feeders, and ensure the stable operation of the power grid.

[0059] In order to make the collected historical current values ​​more accurate and reliable, in an optional implementation manner, the method further includes:

[0060] Step S302, deleting abnormal current values ​​in the above historical current values.

[0061] Specifically, in order to ensure the accuracy and credibility of the collected historical current values, abnormal values ​​in the collected historical current values ​​are eliminated to reduce the impact of erroneous readings and random fluctuations on power grid analysis, thereby providing more accurate current data.

[0062] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0063] The embodiment of the present application also provides a feeder group power transfer capacity assessment device. It should be noted that a feeder group power transfer capacity assessment device in the embodiment of the present application can be used to execute a feeder group power transfer capacity assessment method provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0064] The following introduces a feeder group power supply capacity assessment device provided in an embodiment of the present application.

[0065] Figure 3 1 is a structural block diagram of a feeder group power supply capacity evaluation device according to an embodiment of the present application. Figure 3 As shown, the device comprises:

[0066] A first acquisition unit 10 is used to acquire the current amount passing through each feeder of the distribution network at multiple historical moments, and obtain multiple historical current values ​​of each of the above feeders;

[0067] Specifically, by collecting historical current data of the distribution network, we can obtain a series of current records of feeders at different time points, providing data support for subsequent power transfer capacity analysis.

[0068] A first determining unit 20 is used to determine a transfer power supply current value of each of the feeders according to the plurality of historical current values ​​of each of the feeders, wherein the transfer power supply current value is the amount of current passing through the feeder during the transfer power supply process;

[0069] Specifically, multiple historical current values ​​of each feeder are obtained by collecting historical current data of the distribution network, wherein the multiple historical current values ​​include the current flowing through the feeder when the feeder is operating alone and the transfer current value, that is, the current passing through the feeder during the transfer current value, that is, the transfer current value is determined in the historical current values.

[0070] A first deleting unit 30 is used to delete the above-mentioned power supply current value in the above-mentioned historical current value, and obtain the actual current value of each of the above-mentioned feeders, where the above-mentioned actual current value is the current amount passing through the above-mentioned feeder when the above-mentioned feeder is not connected to other feeders;

[0071] Specifically, by screening and eliminating those current values ​​generated by power transfer, we can obtain independent current data of each feeder when it is not connected to other feeders. These data reflect the real current load of the feeder. Through this processing method, the accuracy of the current data is improved, providing more reliable data for the management of the distribution network.

[0072] The second determination unit 40 is used to evaluate whether the above-mentioned feeder group meets the full power transfer capacity according to the above-mentioned actual current value and the current limiting value of each of the above-mentioned feeders of the feeder group, and the above-mentioned full power transfer capacity is the ability of any one of the above-mentioned feeders of the above-mentioned feeder group to carry all the current of the above-mentioned feeder group.

[0073] Specifically, based on the actual current value and rated current limit value of each feeder, we can evaluate whether the entire feeder group has complete power transfer capabilities, that is, determine whether any single feeder can independently bear the current load of the entire feeder group. Through this evaluation, we can ensure that when a power grid failure occurs or maintenance is required, power can be quickly and safely redistributed, thereby improving the flexibility of the power grid and the continuity of power supply.

[0074] Through this embodiment, the first acquisition unit is used to obtain the current passing through each feeder of the distribution network at multiple historical moments to obtain multiple historical current values ​​of each of the above feeders; the first determination unit is used to determine the power supply current value of each of the above feeders according to the multiple historical current values ​​of each of the above feeders, and the above power supply current value is the current passing through the above feeder during the power supply process; the first deletion unit is used to delete the above power supply current value in the above historical current values ​​to obtain the actual current value of each of the above feeders, and the above actual current value is the current passing through the above feeder when the above feeder is not connected to other feeders; the second determination unit is used to evaluate whether the above feeder group meets the full power supply capacity according to the above actual current value and the current limiting value of each of the above feeders of the feeder group, and the above full power supply capacity is the ability of any one of the above feeders of the above feeder group to carry all the current of the above feeder group. The present application collects historical current amounts passing through each feeder in the distribution network, and deletes the transfer power supply current values ​​passing through each feeder from the historical current values ​​to obtain actual current values ​​passing through each feeder. By analyzing the actual current values ​​of each feeder in the feeder group and the current limiting values ​​of each feeder, it is possible to more accurately evaluate whether the feeder group meets the full transfer power supply capacity, thereby avoiding the inability to accurately evaluate the transfer power supply capacity of the feeder group due to the influence of the transfer power supply when the system collects current value data, and solving the problem of inaccurate judgment on the actual full transfer power supply capacity of the feeder group in the prior art.

[0075] In order to determine the transfer power supply current value from the historical current value, in an optional implementation manner, the transfer power supply current value of each of the above feeders is determined according to a plurality of the above historical current values ​​of each of the above feeders, and the above first determination unit includes:

[0076] A first determination module is used to obtain a plurality of historical closing times of each tie switch between each of the above feeders;

[0077] Specifically, multiple closing time points of the tie switches between the feeders are collected and recorded, and the transfer power supply current generated by the tie switch operation is identified through the multiple closing time points of the tie switches, so as to accurately separate the transfer power supply current value from the historical current value later.

[0078] The second determination module is used to determine the current value of each of the above-mentioned feeders at the above-mentioned multiple historical closing times from the multiple above-mentioned historical current values ​​according to the multiple above-mentioned historical closing times of each of the above-mentioned contact switches, and determine the above-mentioned current value as the above-mentioned power supply current value.

[0079] Specifically, at multiple historical closing time points of each interconnecting switch, we screen and match the corresponding historical current data to accurately identify the current value of each feeder at these specific moments and mark it as the transfer current value. This process achieves accurate classification of current data, which helps to achieve more refined current management and more effective fault handling in power grid operation.

[0080] In order to more accurately evaluate whether the feeder group meets the full power transfer capability, in an optional implementation, based on the actual current value and the current limit value of each of the feeders of the feeder group, it is evaluated whether the feeder group meets the full power transfer capability, and the second determination unit includes:

[0081] A third determination module, configured to determine each of the feeder groups in the distribution network based on a connection relationship between each of the feeders in the distribution network;

[0082] Specifically, each feeder group is clearly divided according to the interconnection relationship between the feeders in the distribution network. In this way, we can comprehensively evaluate the actual carrying current value and current limiting value of the feeder group.

[0083] A fourth determination module, used for calculating the sum of the actual current values ​​of the feeders to obtain the actual carrying current value of the feeder group;

[0084] Specifically, by accumulating the actual current value of each feeder, we obtain the actual carrying current value of the entire feeder group. Through this process, we avoid the situation where the total current of the feeder group calculated is too large due to the influence of the feeder in the feeder group being affected by the transferred power supply, and thus causing misjudgment. By performing various current management calculations in the distribution network based on the actual carrying current of the feeder group obtained, we can effectively prevent the occurrence of overload, thereby ensuring the safe and stable operation of the power grid.

[0085] The fifth determination module is used to obtain the above-mentioned current limiting value of each of the above-mentioned feeders, and determine whether the above-mentioned feeder group meets the full power transfer capacity according to the above-mentioned current limiting value and the above-mentioned actual carrying current value.

[0086] Specifically, by collecting the current limiting value of each feeder and combining it with the actual current carrying value of the feeder group, we can evaluate whether the feeder group has the ability to fully assume the power transfer capacity. This method can effectively evaluate the power supply reliability of the power grid in emergency situations, ensure that the power grid can safely and effectively transfer electricity in the event of a failure or maintenance, reduce the risk of power outages, and improve the overall stability and power supply quality of the power grid.

[0087] In order to determine whether the feeder group meets the full power transfer capability, in an optional implementation, the current limiting value of each of the above feeders is obtained, and whether the feeder group meets the full power transfer capability is judged according to the current limiting value and the actual carrying current value, and the fifth determination module includes:

[0088] A first determination submodule is used to determine that the feeder group meets the full power transfer capability when the actual carrying current value of the feeder group is less than the current limiting value corresponding to each of the feeders;

[0089] Specifically, the current limiting value of each feeder is obtained and compared with the actual carrying current value of the feeder group. If the actual carrying current value of the feeder group does not exceed the current limiting value of any feeder, then it can be determined that the feeder group has the ability to fully transfer power. This judgment method can ensure that when a power grid fails, power can be quickly and safely redistributed, reducing power outage time and improving the flexibility of the power grid and the continuity of power supply.

[0090] The second determination submodule is used to determine that the feeder group does not meet the full power transfer capability when the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the feeder.

[0091] Specifically, if the actual carrying current value of the feeder group exceeds the current limit value of any feeder, it means that the feeder group cannot meet the requirements of full power transfer, and the feeders in the feeder group may be overloaded, posing a safety hazard. This assessment helps to identify potential bottlenecks and risk points of each feeder group in the power grid, so as to take preventive measures during power grid planning and operation.

[0092] It should be noted that the above-mentioned device can derive in real time the actual current value of each feeder, the actual current-carrying value of the feeder group and whether the feeder group meets the full power transfer capacity, providing data support for planning and operation personnel.

[0093] In order to prevent the feeder from being overloaded, in an optional implementation manner, the above device further includes:

[0094] The first control unit is used to adjust the load distribution on the load side of the target feeder when the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the target feeder. The target feeder is any one of the feeders in the feeder group.

[0095] Specifically, in order to prevent feeder overload, when it is detected that the current limiting value of any feeder in the feeder group exceeds the actual carrying current value of the feeder group, the load of this target feeder is redistributed. The implementation of this strategy enables the power grid to adjust the power distribution in time when facing the risk of overload, reduce the burden on overloaded feeders, and ensure the stable operation of the power grid.

[0096] In order to make the collected historical current values ​​more accurate and reliable, in an optional implementation manner, the above device further includes:

[0097] The second control unit is used to delete the abnormal current value in the above historical current value.

[0098] Specifically, in order to ensure the accuracy and credibility of the collected historical current values, abnormal values ​​in the collected historical current values ​​are eliminated to reduce the impact of erroneous readings and random fluctuations on power grid analysis, thereby providing more accurate current data.

[0099] The above-mentioned feeder group power supply capacity assessment device includes a processor and a memory, and the above-mentioned first acquisition unit, first determination unit, first deletion unit, and second determination unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to implement corresponding functions. The above-mentioned modules are all located in the same processor; or, the above-mentioned modules are located in different processors in any combination.

[0100] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the actual full power transfer capability of the feeder group can be accurately determined by adjusting kernel parameters.

[0101] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0102] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned feeder group power supply capacity evaluation method.

[0103] Specifically, a method for evaluating the power supply capability of a feeder group includes:

[0104] Step S201, obtaining the current amount passing through each feeder of the distribution network at multiple historical moments, and obtaining multiple historical current values ​​of each of the above feeders;

[0105] Step S202, determining a power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the power supply current value is the amount of current passing through the feeder during the power supply transfer process;

[0106] Step S203, deleting the power supply current value in the historical current value, and obtaining the actual current value of each of the feeders, where the actual current value is the current passing through the feeder when the feeder is not connected to other feeders;

[0107] Step S204, evaluating whether the feeder group meets the full power transfer capacity based on the actual current value and the current limit value of each of the feeders of the feeder group, where the full power transfer capacity is the ability of any one of the feeders of the feeder group to carry all the current of the feeder group.

[0108] An embodiment of the present invention provides a processor, and the processor is used to run a program, wherein the program executes the above-mentioned method for evaluating the power supply transfer capability of a feeder group when running.

[0109] Specifically, a method for evaluating the power supply capability of a feeder group includes:

[0110] Step S201, obtaining the current amount passing through each feeder of the distribution network at multiple historical moments, and obtaining multiple historical current values ​​of each of the above feeders;

[0111] Step S202, determining a power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the power supply current value is the amount of current passing through the feeder during the power supply transfer process;

[0112] Step S203, deleting the power supply current value in the historical current value, and obtaining the actual current value of each of the feeders, where the actual current value is the current passing through the feeder when the feeder is not connected to other feeders;

[0113] Step S204, evaluating whether the feeder group meets the full power transfer capacity based on the actual current value and the current limit value of each of the feeders of the feeder group, where the full power transfer capacity is the ability of any one of the feeders of the feeder group to carry all the current of the feeder group.

[0114] The present application also provides a computer program product, which, when executed on a data processing device, is suitable for executing a program for initializing at least the following method steps:

[0115] Step S201, obtaining the current amount passing through each feeder of the distribution network at multiple historical moments, and obtaining multiple historical current values ​​of each of the above feeders;

[0116] Step S202, determining a power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the power supply current value is the amount of current passing through the feeder during the power supply transfer process;

[0117] Step S203, deleting the power supply current value in the historical current value, and obtaining the actual current value of each of the feeders, where the actual current value is the current passing through the feeder when the feeder is not connected to other feeders;

[0118] Step S204, evaluating whether the feeder group meets the full power transfer capacity based on the actual current value and the current limit value of each of the feeders of the feeder group, where the full power transfer capacity is the ability of any one of the feeders of the feeder group to carry all the current of the feeder group.

[0119] An embodiment of the present application also provides a feeder group power supply transfer capacity assessment system, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, including executing any one of the above-mentioned feeder group power supply transfer capacity assessment methods.

[0120] Specifically, a method for evaluating the power supply capability of a feeder group includes:

[0121] Step S201, obtaining the current amount passing through each feeder of the distribution network at multiple historical moments, and obtaining multiple historical current values ​​of each of the above feeders;

[0122] Step S202, determining a power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the power supply current value is the amount of current passing through the feeder during the power supply transfer process;

[0123] Step S203, deleting the power supply current value in the historical current value, and obtaining the actual current value of each of the feeders, where the actual current value is the current passing through the feeder when the feeder is not connected to other feeders;

[0124] Step S204, evaluating whether the feeder group meets the full power transfer capacity based on the actual current value and the current limit value of each of the feeders of the feeder group, where the full power transfer capacity is the ability of any one of the feeders of the feeder group to carry all the current of the feeder group.

[0125] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0126] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0127] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0128] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0129] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0130] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0131] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0132] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0133] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity 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, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0134] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0135] 1) A method for evaluating the power transfer capacity of a feeder group of the present application, obtaining the current passing through each feeder of the distribution network at multiple historical moments to obtain multiple historical current values ​​of each of the above feeders; determining the power transfer current value of each of the above feeders according to the multiple historical current values ​​of each of the above feeders, the above power transfer current value is the current passing through the above feeder during the power transfer process; deleting the above power transfer current value in the above historical current value to obtain the actual current value of each of the above feeders, the above actual current value is the current passing through the above feeder when the above feeder is not connected to other feeders; based on the above actual current value and the current limiting value of each of the above feeders of the feeder group, evaluating whether the above feeder group meets the full power transfer capacity, the above full power transfer capacity is the ability of any one of the above feeders of the above feeder group to carry all the current of the above feeder group. The present application collects historical current amounts passing through each feeder in the distribution network, and deletes the transfer power supply current values ​​passing through each feeder from the historical current values ​​to obtain actual current values ​​passing through each feeder. By analyzing the actual current values ​​of each feeder in the feeder group and the current limiting values ​​of each feeder, it is possible to more accurately evaluate whether the feeder group meets the full transfer power supply capacity, thereby avoiding the inability to accurately evaluate the transfer power supply capacity of the feeder group due to the influence of the transfer power supply when the system collects current value data, and solving the problem of inaccurate judgment on the actual full transfer power supply capacity of the feeder group in the prior art.

[0136] 2) A feeder group power supply capacity assessment device of the present application, a first acquisition unit, used to obtain the current passing through each feeder of the distribution network at multiple historical moments, and obtain multiple historical current values ​​of each of the above feeders; a first determination unit, used to determine the power supply current value of each of the above feeders according to the multiple historical current values ​​of each of the above feeders, and the above power supply current value is the current passing through the above feeder during the power supply process; a first deletion unit, used to delete the above power supply current value in the above historical current values, and obtain the actual current value of each of the above feeders, and the above actual current value is the current passing through the above feeder when the above feeder is not connected to other feeders; a second determination unit, used to evaluate whether the above feeder group meets the full power supply capacity according to the above actual current value and current limiting value of each of the above feeders of the feeder group, and the above full power supply capacity is the ability of any one of the above feeders of the above feeder group to carry all the current of the above feeder group. The present application collects historical current amounts passing through each feeder in the distribution network, and deletes the transfer power supply current values ​​passing through each feeder from the historical current values ​​to obtain actual current values ​​passing through each feeder. By analyzing the actual current values ​​of each feeder in the feeder group and the current limiting values ​​of each feeder, it is possible to more accurately evaluate whether the feeder group meets the full transfer power supply capacity, thereby avoiding the inability to accurately evaluate the transfer power supply capacity of the feeder group due to the influence of the transfer power supply when the system collects current value data, and solving the problem of inaccurate judgment on the actual full transfer power supply capacity of the feeder group in the prior art.

[0137] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for evaluating the power supply capacity of a feeder group, characterized in that: include: Acquire the current amount passing through each feeder of the distribution network at multiple historical moments to obtain multiple historical current values ​​of each feeder; Determine a transfer power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the transfer power supply current value is the amount of current passing through the feeder during the transfer power supply process; Deleting the transferred power supply current value in the historical current value to obtain an actual current value of each feeder, wherein the actual current value is the amount of current passing through the feeder when the feeder is not connected to other feeders; According to the actual current value and the current limiting value of each feeder of the feeder group, evaluate whether the feeder group meets the full power transfer capacity, and the full power transfer capacity is the ability of any feeder of the feeder group to carry all the current of the feeder group.

2. The method according to claim 1, characterized in that Determining the power supply current value of each feeder according to the plurality of historical current values ​​of each feeder includes: Acquire multiple historical closing times of each tie switch between each of the feeders; According to the multiple historical closing times of the tie switches, the current value of each feeder at the multiple historical closing times is determined from the multiple historical current values, and the current value is determined as the transfer power supply current value.

3. The method according to claim 1, characterized in that According to the actual current value and the current limit value of each feeder of the feeder group, evaluating whether the feeder group meets the full power transfer capability includes: Determining each feeder group in the distribution network based on a connection relationship between each feeder in the distribution network; Calculating the sum of the actual current values ​​of each feeder to obtain the actual carrying current value of the feeder group; The current limiting value of each feeder is obtained, and whether the feeder group meets the full power transfer capacity is determined according to the current limiting value and the actual carrying current value.

4. The method according to claim 3, characterized in that Obtaining the current limit value of each feeder, and judging whether the feeder group meets the full power transfer capability according to the current limit value and the actual carrying current value, including: When the actual carrying current value of the feeder group is less than the current limiting value corresponding to each feeder, the feeder group meets the full power transfer capability; When the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the feeder, the feeder group does not meet the full power transfer capability.

5. The method according to claim 4, characterized in that The method further comprises: When the actual carrying current value of the feeder group is greater than or equal to the current limiting value of the target feeder, the load distribution on the load side of the target feeder is adjusted, and the target feeder is any one of the feeders in the feeder group.

6. The method according to claim 1, characterized in that Before determining the power supply current value of each feeder according to the plurality of historical current values ​​of each feeder, the method further includes: The abnormal current value in the historical current value is deleted.

7. A device for evaluating the power supply capacity of a feeder group, characterized in that: include: A first acquisition unit is used to acquire the current amount passing through each feeder of the distribution network at multiple historical moments, and obtain multiple historical current values ​​of each feeder; A first determining unit is used to determine a transfer power supply current value of each feeder according to a plurality of historical current values ​​of each feeder, wherein the transfer power supply current value is the amount of current passing through the feeder during the transfer power supply process; A first deleting unit is used to delete the transfer current value in the historical current value to obtain an actual current value of each feeder, where the actual current value is the amount of current passing through the feeder when the feeder is not connected to other feeders; The second determination unit is used to evaluate whether the feeder group meets the full power transfer capacity according to the actual current value and the current limiting value of each feeder of the feeder group, and the full power transfer capacity is the ability of any feeder of the feeder group to carry all the current of the feeder group.

8. 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 according to any one of claims 1 to 6.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

10. A power transfer capability assessment system, characterized in that: include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of claims 1 to 6.

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