Power distribution network multi-dimensional evaluation method and related device

Abstract

The invention provides a power distribution network multi-dimensional evaluation method and a related device. The method comprises the following steps: acquiring a plurality of load points and power supply points of a target power distribution network; obtaining the load capacity of each load point to obtain a plurality of load capacities; determining a total power supply demand according to the plurality of load capacities; acquiring the installed capacity of each power supply point to obtain a plurality of installed capacities; determining a total power supply capacity according to the plurality of installed capacities; determining a power supply utilization rate according to the total power supply demand and the total power capacity; acquiring a first total electric quantity consumed by the plurality of load points and a second total electric quantity emitted by the plurality of power supply points in a preset time period; determining power supply efficiency according to the first total electric quantity and the second total electric quantity; obtaining the target availability of each load point to obtain a plurality of target availability; determining power supply reliability according to the multiple target availability; and determining a comprehensive power supply evaluation index according to the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights.

Description

Technical Field

[0001] The present application relates to the technical field of distribution network, and in particular to a multi-dimensional evaluation method and related devices for distribution network. Background Art

[0002] In the existing power system, the operation and management of the distribution network depends on the accurate monitoring and evaluation of load points and power supply points. The traditional distribution network evaluation method mainly focuses on single indicators, such as power supply capacity and power supply efficiency, while ignoring the evaluation of comprehensive performance. This may cause problems such as insufficient power supply and low efficiency during the operation of the distribution network.

[0003] Therefore, how to achieve a comprehensive evaluation of the comprehensive performance of the distribution network needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide a multi-dimensional evaluation method and related devices for a distribution network, which achieve a comprehensive evaluation of the comprehensive performance of the distribution network and improve the accuracy and reliability of the comprehensive evaluation.

[0005] In a first aspect, an embodiment of the present application provides a multi-dimensional evaluation method for a distribution network, the method comprising:

[0006] Obtain multiple load points and multiple power supply points corresponding to the target distribution network;

[0007] Obtaining the load capacity of each load point among the multiple load points to obtain multiple load capacities;

[0008] determining a total power demand according to the multiple load capacities;

[0009] Obtaining the installed capacity of each of the multiple power supply points to obtain multiple installed capacities;

[0010] Determine a total power supply capacity according to the multiple installed capacities; the total power supply capacity is greater than the total power supply demand;

[0011] Determining a power supply utilization rate according to the total power supply demand and the total power supply capacity;

[0012] Acquire a first total amount of electricity consumed by the multiple load points within a preset time period and a second total amount of electricity generated by the multiple power points within the preset time period;

[0013] determining a power supply efficiency according to the first total power and the second total power;

[0014] Obtaining the target availability corresponding to each load point in the preset time period among the multiple load points to obtain multiple target availabilities;

[0015] Determining the power supply reliability corresponding to the target distribution network according to the multiple target availabilities;

[0016] Obtaining a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights;

[0017] The comprehensive power supply evaluation index of the target distribution network is determined according to the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network.

[0018] In a second aspect, an embodiment of the present application provides a multi-dimensional evaluation device for a distribution network, the device comprising an acquisition module, a determination module and an evaluation module, wherein:

[0019] The acquisition module is used to acquire multiple load points and multiple power supply points corresponding to the target distribution network; acquire the load capacity of each load point in the multiple load points to obtain multiple load capacities;

[0020] The determination module is used to determine the total power demand according to the multiple load capacities;

[0021] The acquisition module is further used to acquire the installed capacity of each power source point among the multiple power source points to obtain multiple installed capacities;

[0022] The determination module is further used to determine a total power capacity according to the multiple installed capacities; the total power capacity is greater than the total power demand; and the power utilization rate is determined according to the total power demand and the total power capacity;

[0023] The acquisition module is further used to acquire a first total amount of electricity consumed by the multiple load points within a preset time period and a second total amount of electricity generated by the multiple power points within the preset time period;

[0024] The determining module is further configured to determine a power supply efficiency according to the first total power and the second total power;

[0025] The acquisition module is further used to acquire the target availability corresponding to each load point in the preset time period among the multiple load points to obtain multiple target availabilities;

[0026] The determination module is further configured to determine the power supply reliability corresponding to the target distribution network according to the multiple target availabilities;

[0027] The acquisition module is further used to acquire a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights;

[0028] The evaluation module is used to determine the comprehensive power supply evaluation index of the target distribution network based on the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network.

[0029] In a third aspect, an embodiment of the present application provides an electronic device, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps of any method in the first aspect of the embodiment of the present application.

[0030] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in any method of the first aspect of the embodiment of the present application.

[0031] In a fifth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in any method of the first aspect of the embodiment of the present application. The computer program product may be a software installation package.

[0032] By implementing the embodiments of the present application, a comprehensive evaluation of the comprehensive performance of the distribution network is achieved, and the accuracy and reliability of the comprehensive evaluation are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a composition architecture diagram of a target distribution network provided in an embodiment of the present application;

[0035] Figure 2 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0036] Figure 3 It is a flow chart of a multi-dimensional evaluation method for a distribution network provided in an embodiment of the present application;

[0037] Figure 4is a schematic diagram of a security risk level table provided in an embodiment of the present application;

[0038] Figure 5 It is a block diagram of the functional modules of a multi-dimensional evaluation device for a distribution network provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] 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 are within the scope of protection of this application.

[0040] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0041] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship. The "plurality" appearing in the embodiments of the present application refers to two or more.

[0042] In the embodiments of the present application, "at least one item" or similar expressions refer to any combination of these items, including any combination of single items or plural items, and refer to one or more, and multiple refers to two or more. For example, at least one item of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0043] The "connection" that appears in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0044] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0045] In the existing power system, the operation and management of the distribution network depends on the accurate monitoring and evaluation of load points and power supply points. The traditional distribution network evaluation method mainly focuses on single indicators, such as power supply capacity and power supply efficiency, while ignoring the evaluation of comprehensive performance. This may cause problems such as insufficient power supply and low efficiency during the operation of the distribution network. Therefore, how to achieve a comprehensive evaluation of the comprehensive performance of the distribution network is urgent to be solved.

[0046] To solve the above problems, the embodiment of the present application provides a multi-dimensional evaluation method and related devices for a distribution network, which obtains multiple load points and multiple power supply points corresponding to a target distribution network; obtains the load capacity of each load point in the multiple load points to obtain multiple load capacities; determines the total power supply demand according to the multiple load capacities; obtains the installed capacity of each power supply point in the multiple power supply points to obtain multiple installed capacities; determines the total power supply capacity according to the multiple installed capacities; the total power supply capacity is greater than the total power supply demand; determines the power supply utilization rate according to the total power supply demand and the total power supply capacity; obtains the first total power consumed by the multiple load points within a preset time period and the first total power consumed by the multiple power points within a preset time period The second total amount of electricity generated in the time period; determine the power supply efficiency according to the first total amount of electricity and the second total amount of electricity; obtain the target availability corresponding to each load point in the preset time period among the multiple load points, and obtain multiple target availabilities; determine the power supply reliability corresponding to the target distribution network according to the multiple target availabilities; obtain a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights; determine the comprehensive power supply evaluation index of the target distribution network according to the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network. A comprehensive evaluation of the comprehensive performance of the distribution network is achieved, and the accuracy and reliability of the comprehensive evaluation are improved.

[0047] Combine the following Figure 1 A composition architecture for executing a multi-dimensional evaluation method for a distribution network in an embodiment of the present application is described. Figure 1This is a composition architecture diagram of a target distribution network provided in an embodiment of the present application, and the target distribution network includes but is not limited to power point 1, power point 2, component 1, component 2, component 3, component 4, load point 1, and load point 2, which are not specifically limited here. Among them, the target distribution network can be a DC distribution network, which is not specifically limited here.

[0048] The power source point refers to the location of the power source in the power system or circuit of the target distribution network, that is, the place where the power is provided. The power source point can be a generator, a transformer, or any other form of power supply equipment, which is usually responsible for providing current and voltage to the load point.

[0049] The load point refers to the location of the terminal equipment that receives electric energy in the power system or circuit of the target distribution network, that is, the place where the power load is used. The load point is usually the consumer of electricity, such as various electrical equipment, industrial machines, household appliances, etc. The load point may have different characteristics and requirements depending on the power consumption, power demand, etc.

[0050] Among them, components refer to the basic components in the circuit of the target distribution network, which are used to realize electrical functions or control the flow of current and voltage. Common components include resistors, capacitors, inductors, switches, transformers, relays, diodes, transistors, etc., which can be used for current limiting, energy storage, switch control, etc.

[0051] In a possible embodiment, power point 1 transmits electric energy to load point 1 through component 1 and component 2, and power point 2 transmits electric energy to load point 1 through component 3, component 1 and component 2. When component 1 or component 2 fails, power point 1 and power point 2 cannot transmit electric energy to load point 1. However, when component 3 fails, power point 1 can still transmit electric energy to load point 1 through component 1 and component 2.

[0052] It can be seen that when evaluating the reliability and continuous power supply capability of the target distribution network, the accuracy of the evaluation can be improved by considering the multi-path power transmission of the target distribution network, that is, considering that when some components fail, the power supply to the load point can still be guaranteed by other components and power supply points, thereby obtaining a more practical evaluation result.

[0053] Combine the following Figure 2 The electronic device in the embodiment of the present application is described. Figure 2 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, such as Figure 2 As shown, the electronic device includes one or more processors, a memory, a communication interface and one or more programs, and the processor is communicatively connected with the memory and the communication interface via an internal communication bus.

[0054] Among them, the processor is mainly used for:

[0055] Obtain multiple load points and multiple power supply points corresponding to the target distribution network;

[0056] Obtaining the load capacity of each load point among the multiple load points to obtain multiple load capacities;

[0057] Determine the total power demand based on multiple load capacities;

[0058] Obtaining the installed capacity of each power source point among the multiple power source points to obtain multiple installed capacities;

[0059] Determine the total power capacity based on multiple installed capacities; the total power capacity is greater than the total power demand;

[0060] Determine the power supply utilization rate based on the total power demand and total power capacity;

[0061] Obtaining a first total amount of electricity consumed by a plurality of load points within a preset time period and a second total amount of electricity generated by a plurality of power supply points within a preset time period;

[0062] determining a power supply efficiency according to the first total power and the second total power;

[0063] Obtaining a target availability corresponding to each load point in a preset time period among the multiple load points to obtain multiple target availabilities;

[0064] Determine the power supply reliability corresponding to the target distribution network according to multiple target availability;

[0065] Obtaining a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights;

[0066] The comprehensive power supply evaluation index of the target distribution network is determined according to the total power supply demand, power supply utilization, power supply efficiency, power supply reliability and four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network.

[0067] The one or more programs are stored in the above-mentioned memory and are configured to be executed by the above-mentioned processor, and the one or more programs include instructions for executing any step in the above-mentioned method embodiment.

[0068] Among them, the processor can be, for example, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, units and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication unit can be a communication interface, a transceiver, a transceiver circuit, etc., and the storage unit can be a memory.

[0069] The memory may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the nonvolatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus random access memory (DR RAM).

[0070] It is understandable that the electronic device may include more or fewer structural elements than those in the above structural block diagram, for example, including a power module, physical buttons, Wi-Fi module, speaker, Bluetooth module, sensor, display module, etc., which are not limited here. It is understandable that the electronic device may be equipped with Figure 1 The composition architecture described.

[0071] After understanding the software and hardware architecture of this application, Figure 3 A multi-dimensional evaluation method for a distribution network in an embodiment of the present application is described. Figure 3 : is a flow chart of a multi-dimensional evaluation method for a distribution network provided in an embodiment of the present application, which specifically includes the following steps:

[0072] Step S301, obtaining multiple load points and multiple power supply points corresponding to the target distribution network.

[0073] Specifically, the target distribution network includes but is not limited to load points and power points, where the power point usually refers to the node entering the distribution network from the main power grid or other power supply system, and the load point is the place where electricity is consumed, such as residences, factories, commercial areas, etc.

[0074] Step S302, obtaining the load capacity of each load point among the multiple load points to obtain multiple load capacities.

[0075] Specifically, the power demand of each load point can be measured or calculated through the monitoring system of the distribution network, and the load capacity of each load point can be obtained. That is, the load capacity of the load point can be calculated by obtaining parameters such as current, voltage and power of each load point.

[0076] Step S303: determining a total power demand according to the multiple load capacities.

[0077] Specifically, the total power demand corresponding to the distribution network can be obtained by accumulating the load capacity of each load point. It should be noted that in the process of accumulation, the load factor can also be adjusted as needed, and the spare capacity and load fluctuation can be considered to obtain a more accurate total power demand. Among them, the load factor reflects the degree of fluctuation of the load demand, which is usually the ratio between the peak load and the average load. If the demand at the load point fluctuates and the load factor is low, a higher spare capacity may need to be considered. Among them, in order to ensure the reliability of power supply and avoid power shortages, a certain spare capacity is usually configured for the distribution network. The spare capacity is usually determined based on factors such as the demand fluctuation of the load point and the reliability of the equipment. The spare capacity is generally configured at 10%-20% of the total load demand, and is not specifically limited here.

[0078] Step S304, obtaining the installed capacity of each of the multiple power supply points to obtain multiple installed capacities.

[0079] Specifically, the capacity data of the power generation units of each power source point in the distribution network can be collected, wherein the data can be obtained through design data, operation and maintenance documents, real-time monitoring systems, etc., which are not specifically limited here. If there are multiple generator sets in the power source point, the installed capacity of the power source point is the sum of the capacities of each generator set.

[0080] Step S305: determining a total power capacity according to the multiple installed capacities.

[0081] The total power capacity is greater than the total power demand. The total power capacity corresponding to the distribution network can be obtained by accumulating the installed capacity of each power point.

[0082] Step S306: determining a power supply utilization rate according to the total power demand and the total power supply capacity.

[0083] Specifically, the total power demand and total power capacity can be calculated according to a preset power utilization calculation formula to obtain the power utilization. The power utilization calculation formula is as follows:

[0084]

[0085] Among them, λ load Indicates the power supply utilization rate of the distribution network; T yea It represents the total average annual utilization hours of all load points in the distribution network; S load Indicates the total power demand; S source represents the total power capacity; 8760 represents the total hours in a year.

[0086] Step S307, obtaining a first total amount of electricity consumed by the plurality of load points within a preset time period and a second total amount of electricity generated by the plurality of power points within the preset time period.

[0087] Specifically, if the preset time period is set to one year, the total amount of electric energy consumed by all load points from the power source point in one year is obtained to obtain the first total amount of electric energy. At the same time, the total amount of electric energy delivered by all power sources to the load point in the same year is obtained to obtain the second total amount of electric energy.

[0088] Step S308: determining a power supply efficiency according to the first total power and the second total power.

[0089] Specifically, according to a preset power supply efficiency calculation formula, the first total power and the second total power are calculated to obtain the power supply efficiency of the distribution network. The power supply efficiency calculation formula is as follows:

[0090]

[0091] Among them, η year Indicates the power supply efficiency of the distribution network; E load_year It represents the total amount of electricity consumed by all load points in the distribution network throughout the year; E source_year It represents the total amount of electricity consumed by all power supply points in the distribution network throughout the year.

[0092] Step S309, obtaining the target availability corresponding to each load point in the plurality of load points within the preset time period, and obtaining a plurality of target availabilities.

[0093] The target distribution network includes a plurality of components; the components are used to connect the load point and the power source point to ensure that the electric energy is transmitted from the power source point to the load point, and the target availability corresponding to each load point in the preset time period is obtained for each load point in the plurality of load points to obtain a plurality of target availabilities, and the specific steps include:

[0094] According to the preset availability calculation step, the reference availability corresponding to each component in the multiple components and the load point i within the preset time period is calculated to obtain multiple reference availabilities; the load point i is any one of the multiple load points; the target availability i is determined according to the multiple reference availabilities; the target availability i is the target availability corresponding to the load point i in the multiple target availabilities; wherein the availability calculation step includes: obtaining component u; the component u is any one of the multiple components corresponding to the load point i; determining multiple connecting paths between the component u and the load point i; obtaining the component corresponding to each connecting path in the multiple connecting paths to obtain multiple component groups; each connecting path corresponds to an component group; calculating the availability of each connecting path according to the multiple component groups to obtain multiple path availabilities; calculating the sum of the multiple path availabilities to obtain the reference availability i; the reference availability i is the reference availability corresponding to the component u in the multiple reference availabilities.

[0095] In one possible embodiment, first, determine the element u associated with the load point i, and the element u is a key device that provides power or supports the load point. Then, obtain all the connection paths between the element u and the load point i, and the connection path may contain multiple intermediate elements. All the elements on each connection path are formed into an element group, and the elements in each element group jointly support the stable operation of the connection path corresponding to the element group. Then, calculate the availability of each connection path according to each element group to obtain multiple path availabilities, wherein the availability calculation can be performed based on the fault conditions of all elements on each connection path, which is not specifically limited here. Add the multiple path availabilities to obtain the reference availability i of the element u for the load point i. Finally, calculate the other elements v associated with the load point i according to the same steps as the element u, so as to obtain the reference availability v of other elements v for the load point i, wherein the element v can be one or more, which is not specifically limited here. The target availability i corresponding to the load point i can be obtained by adding or multiplying the reference availability i and the reference availability v, wherein if the connection relationship between the element u and the element v is a parallel relationship, the corresponding availability of the two is added, and if the connection relationship between the element u and the element v is a series relationship, the corresponding availability of the two is multiplied. It should be noted that other load points can be calculated according to the same steps as the load point i to obtain the target availability corresponding to other load points, that is, multiple target availability corresponding to multiple load points can be obtained.

[0096] It can be seen that by conducting a detailed analysis of the availability of each load point and considering the redundant design of different components and connection paths, the power supply stability of the load point under various conditions can be accurately evaluated, thereby improving the accuracy and reliability of the power supply performance evaluation of the distribution network.

[0097] Wherein, when the time length corresponding to the preset time period is one year, the steps of calculating the availability of each connected path according to the multiple component groups to obtain multiple path availabilities include:

[0098] Acquire multiple first components in a first component group; the first component group is any component group in the multiple component groups; calculate the availability of each first component in the multiple first components according to a preset availability calculation formula to obtain multiple component availabilities;

[0099] The availability calculation formula is as follows:

[0100]

[0101] Wherein, η represents the component availability of the reference component; the reference component is any first component among the plurality of first components; λ represents the annual failure rate of the reference component within the preset time period; T represents the annual average failure time of the reference component within the preset time period; 8760 represents the total number of hours in a year;

[0102] A first path availability is determined according to the product of the plurality of component availabilities; the first path availability is a path availability corresponding to the first component group in the plurality of path availabilities.

[0103] It should be noted that component availability refers to the proportion of components that can work normally within one year, the annual failure rate refers to the probability of a component failing within one year, and the annual average failure time refers to the average maintenance time usually required after a component fails. Each component group can be calculated according to the calculation steps of the first component group to obtain the path availability of the connected path corresponding to each component group.

[0104] Step S310: determining the power supply reliability corresponding to the target distribution network according to the multiple target availabilities.

[0105] The specific steps of determining the power supply reliability corresponding to the target distribution network according to the multiple target availabilities include:

[0106] Calculating the multiple target availability according to a preset reliability calculation formula to obtain the power supply reliability;

[0107] The reliability calculation formula is as follows:

[0108]

[0109] Wherein, A represents the power supply reliability corresponding to the target distribution network; U ui N represents the reference availability corresponding to the element u and the load point i; i represents the annual average load demand of the load point i; ∑N i Represents the sum of the annual average load demands of the multiple load points.

[0110] It can be seen that by accurately calculating the power supply reliability of the distribution network, it is convenient to conduct a comprehensive evaluation of the overall performance of the distribution network, thereby improving the accuracy of the comprehensive evaluation.

[0111] Step S311, obtaining a preset power supply evaluation weight group.

[0112] The power supply evaluation weight group includes four power supply evaluation weights, and the total power supply demand, power supply utilization, power supply efficiency, and power supply reliability correspond to a power supply evaluation weight respectively. For example, the total power supply demand, power supply utilization, power supply efficiency, and power supply reliability correspond to power supply evaluation weights a, b, c, and d respectively. The power supply evaluation weights a, b, c, and d can be set according to expert experience or historical data, or according to the specific needs and management objectives of the distribution network, and are not specifically limited here.

[0113] Step S312: determining a comprehensive power supply evaluation index of the target distribution network according to the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights.

[0114] The comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network. The total power supply demand, power supply utilization, power supply efficiency and power supply reliability are determined as the four power supply evaluation parameters corresponding to the target distribution network, and each power supply evaluation parameter corresponds to a power supply evaluation weight. The four power supply evaluation parameters and the four power supply evaluation weights are weighted averaged to obtain the comprehensive power supply evaluation index of the target distribution network.

[0115] It can be seen that by performing weighted calculations on the power supply evaluation parameters of multiple dimensions of the distribution network, a comprehensive evaluation of the comprehensive performance of the distribution network is achieved, and the accuracy and reliability of the comprehensive evaluation are improved.

[0116] In a possible embodiment, the target distribution network also includes multiple distributed energy units, and the installed capacity of each distributed energy unit in the multiple distributed energy units can be obtained to obtain multiple reference installed capacities; the sum of the multiple reference installed capacities is determined as the target installed capacity; the ratio of the target installed capacity to the total power supply capacity is determined as the distributed energy penetration rate; the power quality of the target distribution network is confirmed according to a preset first evaluation scheme; the power safety of the target distribution network is determined according to a preset second evaluation scheme; multiple power evaluation parameters of the target distribution network are determined according to the distributed energy penetration rate, the power quality and the power safety; a preset power evaluation weight group is obtained; the power evaluation weight group includes multiple power evaluation weights; the comprehensive power evaluation index of the target distribution network is determined according to the multiple power evaluation weights and the multiple power evaluation parameters; each power evaluation weight corresponds to an power evaluation parameter.

[0117] The specific steps of confirming the power quality of the target distribution network according to the preset first evaluation scheme include:

[0118] Obtain the actual operating voltage, preset rated voltage, maximum operating voltage and minimum operating voltage corresponding to the target distribution network; calculate the difference between the actual operating voltage and the preset rated voltage to obtain a first difference; take the absolute value of the first difference to obtain a first absolute value; determine the ratio between the first absolute value and the preset rated voltage as a voltage deviation; calculate the difference between the maximum operating voltage and the minimum operating voltage to obtain a second difference; determine the ratio between the second difference and the preset rated voltage as a voltage fluctuation; determine the power quality according to the voltage deviation and the voltage fluctuation; the smaller the voltage deviation and the voltage fluctuation, the higher the power quality.

[0119] The specific steps of determining the power safety of the target distribution network according to the preset second evaluation scheme include:

[0120] Obtain a preset safety risk level table; the safety risk level table includes multiple safety risk levels; perform a probability calculation step for each safety risk level in the multiple safety risk levels to obtain multiple comprehensive probabilities; each comprehensive probability corresponds to a safety risk level; obtain the safety risk level corresponding to the target distribution network in the multiple safety risk levels to obtain a target safety risk level; determine the comprehensive probability corresponding to the target safety risk level in the multiple comprehensive probabilities as the target probability; determine the power safety according to the target probability; wherein the probability calculation step includes: determining multiple safety factors corresponding to a reference safety risk level; the reference safety risk level is any one of the multiple safety risk levels; obtain the occurrence probability corresponding to each safety factor in the multiple safety factors to obtain multiple occurrence probabilities; determine the reference probability corresponding to the reference safety risk level according to the multiple occurrence probabilities; the reference probability is the comprehensive probability corresponding to the reference safety risk level in the multiple comprehensive probabilities.

[0121] For easier understanding, see Figure 4 , Figure 4: This is a schematic diagram of a safety risk level table provided by an embodiment of the present application, wherein in the safety risk level table, the safety risk level of the distribution network is divided into 1-5 levels, and the risk index increases in sequence, wherein 1 is a slight risk, 2 is a relatively slight risk, 3 is a moderate risk, 4 is a relatively serious risk, and 5 is a serious risk. Different combinations of S, F, and P parameters will correspond to different safety risk levels, and different parameters correspond to different safety factors, and safety factors include but are not limited to the severity of injury, the possibility of exposure to dangerous situations, and the possibility of limiting injury. Among them, for the severity of injury, the parameter S can be used to represent it. S0 means no injury; S1 means slight injury (reversible in the short term); S2 means high injury (reversible in the long term); S3 means severe injury (irreversible) or death. For the possibility of exposure to dangerous situations, the parameter F can be used to represent it. F1 is very rare (very rare exposure and / or short-term exposure), and F2 is frequent (continuous exposure and / or long-term exposure). For the possibility of limiting injury, the parameter P can be used to represent it. P1 means that the injury may be avoided, and P2 means that it is unlikely to avoid the injury. It should be noted that the probability of S0-S3 injury severity accidents occurring in the distribution network is Y S0 -Y S3 , the probability of being in F1 and F2 state is Y F1 , Y F2 , the probability of P1 and P2 is Y P1 , Y P2 Finally, the probability of each series path in the graph can be calculated by the cumulative multiplication method, and then the total probability of the parallel paths of each risk level can be calculated by the cumulative method, and finally the probability of the distribution network being at each safety risk level can be obtained.

[0122] It can be seen that through the above method, a multi-dimensional distribution network evaluation system can be established, so as to comprehensively and accurately evaluate the comprehensive power supply performance and power consumption performance of the distribution network, which is convenient for providing guidance and suggestions for the promotion, planning and construction of distribution network projects.

[0123] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the execution process on the method side. It is understandable that, in order to realize the above functions, the electronic device includes a hardware structure and / or software module corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

[0124] The embodiment of the present application can divide the electronic device into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0125] In the case of dividing each functional module into corresponding functional modules, Figure 5 : is a functional module composition block diagram of a distribution network multi-dimensional evaluation device provided in an embodiment of the present application, wherein the distribution network multi-dimensional evaluation device 500 includes an acquisition module 510, a determination module 520 and an evaluation module 530, wherein:

[0126] The acquisition module 510 is used to acquire multiple load points and multiple power supply points corresponding to the target distribution network; acquire the load capacity of each load point in the multiple load points to obtain multiple load capacities;

[0127] The determination module 520 is used to determine the total power demand according to the multiple load capacities;

[0128] The acquisition module 510 is further configured to acquire the installed capacity of each of the multiple power supply points to obtain multiple installed capacities;

[0129] The determination module 520 is further configured to determine a total power capacity according to the multiple installed capacities; the total power capacity is greater than the total power demand; and the power utilization rate is determined according to the total power demand and the total power capacity;

[0130] The acquisition module 510 is further used to acquire a first total amount of electricity consumed by the multiple load points within a preset time period and a second total amount of electricity generated by the multiple power points within the preset time period;

[0131] The determining module 520 is further configured to determine a power supply efficiency according to the first total power and the second total power;

[0132] The acquisition module 510 is further configured to acquire the target availability corresponding to each load point in the plurality of load points within the preset time period, and obtain a plurality of target availabilities;

[0133] The determination module 520 is further configured to determine the power supply reliability corresponding to the target distribution network according to the multiple target availabilities;

[0134] The acquisition module 510 is further used to acquire a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights;

[0135] The evaluation module 530 is used to determine the comprehensive power supply evaluation index of the target distribution network based on the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network.

[0136] Optionally, the target distribution network includes a plurality of elements; the elements are used to connect the load point and the power source point to ensure that electric energy is transmitted from the power source point to the load point. In acquiring the target availability corresponding to each load point in the preset time period among the plurality of load points and obtaining the plurality of target availabilities, the acquisition module 510 is specifically used to:

[0137] According to the preset availability calculation step, the reference availability corresponding to each component of the multiple components and the load point i within the preset time period is calculated to obtain multiple reference availabilities; the load point i is any load point of the multiple load points;

[0138] Determine a target availability i according to the multiple reference availabilities; the target availability i is the target availability corresponding to the load point i in the multiple target availabilities;

[0139] Wherein, the availability calculation step includes:

[0140] Obtaining an element u; the element u is any one of the multiple elements corresponding to the load point i;

[0141] determining a plurality of communication paths between the element u and the load point i;

[0142] Acquire a component corresponding to each of the plurality of communication paths to obtain a plurality of component groups; each communication path corresponds to one component group;

[0143] Calculating the availability of each connected path according to the plurality of component groups to obtain a plurality of path availabilities;

[0144] The sum of the multiple path availabilities is calculated to obtain a reference availability i; the reference availability i is a reference availability corresponding to the component u in the multiple reference availabilities.

[0145] Optionally, when the time length corresponding to the preset time period is one year, in calculating the availability of each connected path according to the multiple component groups to obtain the availabilities of multiple paths, the acquisition module 510 is further specifically used to:

[0146] Acquire a plurality of first components in a first component group; the first component group is any one component group in the plurality of component groups;

[0147] Calculating the availability of each of the plurality of first components according to a preset availability calculation formula to obtain a plurality of component availabilities;

[0148] The availability calculation formula is as follows:

[0149]

[0150] Wherein, η represents the component availability of the reference component; the reference component is any first component among the plurality of first components; λ represents the annual failure rate of the reference component within the preset time period; T represents the annual average failure time of the reference component within the preset time period; 8760 represents the total number of hours in a year;

[0151] A first path availability is determined according to the product of the plurality of component availabilities; the first path availability is a path availability corresponding to the first component group in the plurality of path availabilities.

[0152] Optionally, in determining the power supply reliability corresponding to the target distribution network according to the multiple target availabilities, the determining module 520 is specifically configured to:

[0153] Calculating the multiple target availability according to a preset reliability calculation formula to obtain the power supply reliability;

[0154] The reliability calculation formula is as follows:

[0155]

[0156] Wherein, A represents the power supply reliability corresponding to the target distribution network; U ui N represents the reference availability corresponding to the element u and the load point i; i represents the annual average load demand of the load point i; ∑N i Represents the sum of the annual average load demands of the multiple load points.

[0157] Optionally, the target distribution network further includes a plurality of distributed energy units, and the evaluation module 530 is specifically used for:

[0158] Obtaining the installed capacity of each distributed energy unit in the plurality of distributed energy units to obtain a plurality of reference installed capacities;

[0159] Determining the sum of the multiple reference installed capacities as the target installed capacity;

[0160] Determine the ratio of the target installed capacity to the total power capacity as the distributed energy penetration rate;

[0161] Confirming the power quality of the target distribution network according to a preset first evaluation scheme;

[0162] Determining the power safety of the target distribution network according to a preset second evaluation scheme;

[0163] Determining a plurality of power consumption evaluation parameters of the target distribution network according to the distributed energy penetration rate, the power quality and the power safety;

[0164] Obtaining a preset power consumption evaluation weight group; the power consumption evaluation weight group includes a plurality of power consumption evaluation weights;

[0165] The comprehensive electricity consumption evaluation index of the target distribution network is determined according to the multiple electricity consumption evaluation weights and the multiple electricity consumption evaluation parameters; each electricity consumption evaluation weight corresponds to one electricity consumption evaluation parameter.

[0166] Optionally, in the aspect of confirming the power quality of the target distribution network according to the preset first evaluation scheme, the evaluation module 530 is further specifically used for:

[0167] Obtaining an actual operating voltage, a preset rated voltage, a maximum operating voltage, and a minimum operating voltage corresponding to the target distribution network;

[0168] Calculating a difference between the actual operating voltage and the preset rated voltage to obtain a first difference;

[0169] Taking an absolute value of the first difference to obtain a first absolute value;

[0170] determining a ratio between the first absolute value and the preset rated voltage as a voltage deviation;

[0171] Calculating a difference between the maximum operating voltage and the minimum operating voltage to obtain a second difference;

[0172] determining a ratio between the second difference and the preset rated voltage as a voltage fluctuation;

[0173] The power quality is determined according to the voltage deviation and the voltage fluctuation; the smaller the voltage deviation and the voltage fluctuation are, the higher the power quality is.

[0174] Optionally, in determining the power safety of the target distribution network according to the preset second evaluation scheme, the evaluation module 530 is further specifically used to:

[0175] Obtaining a preset security risk level table; the security risk level table includes multiple security risk levels;

[0176] Performing a probability calculation step on each of the multiple security risk levels to obtain multiple comprehensive probabilities; each comprehensive probability corresponds to a security risk level;

[0177] Obtaining a security risk level corresponding to the target distribution network from the multiple security risk levels to obtain a target security risk level;

[0178] Determine the comprehensive probability corresponding to the target safety risk level among the multiple comprehensive probabilities as the target probability;

[0179] Determining the electricity safety according to the target probability;

[0180] Wherein, the probability calculation step includes:

[0181] Determine a plurality of security factors corresponding to a reference security risk level; the reference security risk level is any one of the plurality of security risk levels;

[0182] Obtaining an occurrence probability corresponding to each of the multiple security factors to obtain multiple occurrence probabilities;

[0183] A reference probability corresponding to the reference safety risk level is determined according to the multiple occurrence probabilities; the reference probability is a comprehensive probability corresponding to the reference safety risk level in the multiple comprehensive probabilities.

[0184] It can be seen that the accuracy and reliability of the evaluation are improved through a comprehensive evaluation of the comprehensive performance of the distribution network.

[0185] It should be noted that the specific implementation of each operation can adopt the corresponding description of the method embodiment shown above, and the distribution network multi-dimensional evaluation device 500 can be used to execute the above method embodiment of the present application, which will not be repeated here.

[0186] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps of any method recorded in the above method embodiments, and the above computer includes an electronic device.

[0187] The embodiment of the present application also provides a computer program product, the computer program product includes a non-transitory computer-readable storage medium storing a computer program, the computer program is operable to cause a computer to execute some or all of the steps of any method described in the method embodiment. The computer program product may be a software installation package, and the computer includes an electronic device.

[0188] It should be noted that, for the above-mentioned various embodiments, for the sake of simple description, they are all expressed as a series of action combinations. Those skilled in the art should be aware that the present application is not limited by the described order of actions, because some steps in the embodiments of the present application can be performed in other orders or simultaneously. In addition, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions, steps, modules or units involved are not necessarily required by the embodiments of the present application.

[0189] In the above embodiments, the embodiments of the present application have different focuses on the description of each embodiment. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0190] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

[0191] The steps of the method or algorithm described in the embodiments of the present application can be implemented in hardware or by executing software instructions by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (electrically EPROM, EEPROM), registers, hard disks, mobile hard disks, read-only compact disks (CD-ROMs) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a terminal device or a management device. Of course, the processor and the storage medium can also be present in a terminal device or a management device as discrete components.

[0192] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiments of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0193] The modules / units included in the devices and products described in the above embodiments may be software modules / units or hardware modules / units, or may be partially software modules / units and partially hardware modules / units. For example, for the devices and products applied to or integrated in the chip, the modules / units included therein may all be implemented in the form of hardware such as circuits, or at least some of the modules / units may be implemented in the form of software programs, which run on the processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for the devices and products applied to or integrated in the chip module, the modules / units included therein may all be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as a chip, circuit module, etc.) or in different components of the chip module, or at least some of the modules / units may be implemented in the form of software programs. The software programs run on the processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits. It is implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in hardware such as circuits; for various devices and products applied to or integrated in the terminal equipment, the various modules / units contained therein can be implemented in hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal equipment, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal equipment, and the remaining (if any) modules / units can be implemented in hardware such as circuits.

[0194] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above description is only the specific implementation method of the embodiments of the present application and is not intended to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A multi-dimensional evaluation method for distribution network, characterized in that: The method comprises: Obtain multiple load points and multiple power supply points corresponding to the target distribution network; Obtaining the load capacity of each load point among the multiple load points to obtain multiple load capacities; determining a total power demand according to the multiple load capacities; Obtaining the installed capacity of each of the multiple power supply points to obtain multiple installed capacities; Determine a total power supply capacity according to the multiple installed capacities; the total power supply capacity is greater than the total power supply demand; Determining a power supply utilization rate according to the total power supply demand and the total power supply capacity; Acquire a first total amount of electricity consumed by the multiple load points within a preset time period and a second total amount of electricity generated by the multiple power points within the preset time period; determining a power supply efficiency according to the first total power and the second total power; Obtaining the target availability corresponding to each load point in the preset time period among the multiple load points to obtain multiple target availabilities; Determining the power supply reliability corresponding to the target distribution network according to the multiple target availabilities; Obtaining a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights; The comprehensive power supply evaluation index of the target distribution network is determined according to the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network.

2. The method according to claim 1, characterized in that The target distribution network includes a plurality of elements; the elements are used to connect the load point and the power source point to ensure that the electric energy is transmitted from the power source point to the load point, and the target availability corresponding to each load point in the preset time period is obtained for each load point in the plurality of load points to obtain a plurality of target availabilities, including: According to the preset availability calculation step, the reference availability corresponding to each component of the multiple components and the load point i within the preset time period is calculated to obtain multiple reference availabilities; the load point i is any load point of the multiple load points; Determine a target availability i according to the multiple reference availabilities; the target availability i is a target availability corresponding to the load point i in the multiple target availabilities; Wherein, the availability calculation step includes: Obtaining an element u; the element u is any one of the multiple elements corresponding to the load point i; determining a plurality of communication paths between the element u and the load point i; Acquire a component corresponding to each of the plurality of communication paths to obtain a plurality of component groups; each communication path corresponds to one component group; Calculating the availability of each connected path according to the plurality of component groups to obtain a plurality of path availabilities; The sum of the multiple path availabilities is calculated to obtain a reference availability i; the reference availability i is a reference availability corresponding to the component u in the multiple reference availabilities.

3. The method according to claim 2, characterized in that When the time length corresponding to the preset time period is one year, the availability of each connected path is calculated according to the multiple component groups to obtain multiple path availabilities, including: Acquire a plurality of first components in a first component group; the first component group is any one component group in the plurality of component groups; Calculating the availability of each of the plurality of first components according to a preset availability calculation formula to obtain a plurality of component availabilities; The availability calculation formula is as follows: Wherein, η represents the component availability of the reference component; the reference component is any first component among the plurality of first components; λ represents the annual failure rate of the reference component within the preset time period; T represents the annual average failure time of the reference component within the preset time period; 8760 represents the total number of hours in a year; A first path availability is determined according to the product of the plurality of component availabilities; the first path availability is a path availability corresponding to the first component group in the plurality of path availabilities.

4. The method according to claim 3, characterized in that The determining, according to the multiple target availabilities, the power supply reliability corresponding to the target distribution network comprises: Calculating the multiple target availability according to a preset reliability calculation formula to obtain the power supply reliability; The reliability calculation formula is as follows: Wherein, A represents the power supply reliability corresponding to the target distribution network; U ui N represents the reference availability corresponding to the element u and the load point i; i represents the annual average load demand of the load point i; ∑N i Represents the sum of the annual average load demands of the multiple load points.

5. The method according to any one of claims 1 to 4, characterized in that: The target distribution network also includes a plurality of distributed energy units, and the method further includes: Obtaining the installed capacity of each distributed energy unit in the plurality of distributed energy units to obtain a plurality of reference installed capacities; Determining the sum of the multiple reference installed capacities as the target installed capacity; Determine the ratio of the target installed capacity to the total power capacity as the distributed energy penetration rate; Confirming the power quality of the target distribution network according to a preset first evaluation scheme; Determining the power safety of the target distribution network according to a preset second evaluation scheme; Determining a plurality of power consumption evaluation parameters of the target distribution network according to the distributed energy penetration rate, the power quality and the power safety; Obtaining a preset power consumption evaluation weight group; the power consumption evaluation weight group includes a plurality of power consumption evaluation weights; The comprehensive electricity consumption evaluation index of the target distribution network is determined according to the multiple electricity consumption evaluation weights and the multiple electricity consumption evaluation parameters; each electricity consumption evaluation weight corresponds to one electricity consumption evaluation parameter.

6. The method according to claim 5, characterized in that The step of confirming the power quality of the target distribution network according to a preset first evaluation scheme includes: Obtaining an actual operating voltage, a preset rated voltage, a maximum operating voltage, and a minimum operating voltage corresponding to the target distribution network; Calculating a difference between the actual operating voltage and the preset rated voltage to obtain a first difference; Taking an absolute value of the first difference to obtain a first absolute value; determining a ratio between the first absolute value and the preset rated voltage as a voltage deviation; Calculating a difference between the maximum operating voltage and the minimum operating voltage to obtain a second difference; determining a ratio between the second difference and the preset rated voltage as a voltage fluctuation; The power quality is determined according to the voltage deviation and the voltage fluctuation; the smaller the voltage deviation and the voltage fluctuation are, the higher the power quality is.

7. The method according to claim 5, characterized in that The step of determining the power safety of the target distribution network according to a preset second evaluation scheme includes: Obtaining a preset security risk level table; the security risk level table includes multiple security risk levels; Performing a probability calculation step on each of the multiple security risk levels to obtain multiple comprehensive probabilities; each comprehensive probability corresponds to a security risk level; Obtaining a security risk level corresponding to the target distribution network from the multiple security risk levels to obtain a target security risk level; Determine the comprehensive probability corresponding to the target safety risk level among the multiple comprehensive probabilities as the target probability; Determining the electricity safety according to the target probability; Wherein, the probability calculation step includes: Determine a plurality of security factors corresponding to a reference security risk level; the reference security risk level is any one of the plurality of security risk levels; Obtaining an occurrence probability corresponding to each of the multiple security factors to obtain multiple occurrence probabilities; A reference probability corresponding to the reference safety risk level is determined according to the multiple occurrence probabilities; the reference probability is a comprehensive probability corresponding to the reference safety risk level in the multiple comprehensive probabilities.

8. A multi-dimensional evaluation device for a distribution network, characterized in that: The device comprises an acquisition module, a determination module and an evaluation module, wherein: The acquisition module is used to acquire multiple load points and multiple power supply points corresponding to the target distribution network; acquire the load capacity of each load point in the multiple load points to obtain multiple load capacities; The determination module is used to determine the total power demand according to the multiple load capacities; The acquisition module is further used to acquire the installed capacity of each power source point among the multiple power source points to obtain multiple installed capacities; The determination module is further used to determine a total power capacity according to the multiple installed capacities; the total power capacity is greater than the total power demand; and the power utilization rate is determined according to the total power demand and the total power capacity; The acquisition module is further used to acquire a first total amount of electricity consumed by the multiple load points within a preset time period and a second total amount of electricity generated by the multiple power points within the preset time period; The determining module is further configured to determine a power supply efficiency according to the first total power and the second total power; The acquisition module is further used to acquire the target availability corresponding to each load point in the preset time period among the multiple load points to obtain multiple target availabilities; The determination module is further configured to determine the power supply reliability corresponding to the target distribution network according to the multiple target availabilities; The acquisition module is further used to acquire a preset power supply evaluation weight group; the power supply evaluation weight group includes four power supply evaluation weights; The evaluation module is used to determine the comprehensive power supply evaluation index of the target distribution network based on the total power supply demand, the power supply utilization rate, the power supply efficiency, the power supply reliability and the four power supply evaluation weights; the comprehensive power supply evaluation index is used to evaluate the comprehensive power supply performance of the target distribution network.

9. An electronic device, characterized in that: include: A processor, a memory, a communication interface, and one or more programs; The one or more programs are stored in the memory and configured to be executed by the processor, the programs comprising instructions for executing the steps in the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the processor is caused to perform the method according to any one of claims 1 to 7.

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