CN110570104A - Power distribution network power supply reliability analysis method and device - Google Patents
Power distribution network power supply reliability analysis method and device Download PDFInfo
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- CN110570104A CN110570104A CN201910783000.6A CN201910783000A CN110570104A CN 110570104 A CN110570104 A CN 110570104A CN 201910783000 A CN201910783000 A CN 201910783000A CN 110570104 A CN110570104 A CN 110570104A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
Abstract
the invention discloses a method and a device for analyzing power supply reliability of a power distribution network, wherein the method comprises the following steps: receiving a system architecture of a power distribution network; dividing a grid structure of the power distribution network into a plurality of feeder areas, and taking the feeder areas as minimum reliability analysis units; receiving index factors influencing power supply reliability, and determining the index factors of each feeder area; respectively carrying out load flow calculation on each feeder line area, and correcting index factors of the feeder line areas according to the non-convergence load flow calculation result; and establishing a power supply reliability analysis model according to the index factors of each feeder area, and respectively carrying out reliability calculation on the corresponding feeder areas in parallel according to the power supply reliability analysis model.
Description
Technical Field
The disclosure belongs to the technical field of power distribution networks, and relates to a method and a device for analyzing power supply reliability of a power distribution network.
background
the statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Power reliability refers to the ability of a power system to continuously provide power to a user. The method is an important content of power reliability management, and directly reflects the power supply capability of a power supply system to users. At present, with the development of economy, users put higher demands on the reliability of power supply. Therefore, the power supply department must improve the reliability of power supply to meet the requirements of users to the maximum extent.
However, the inventor finds that, in the research and development process, the evaluation and prediction of the power distribution network power supply reliability index mainly depends on human experience to carry out qualitative analysis, scientific and quantitative analysis cannot be well combined with the power grid practice, and the accuracy of reliability analysis is low. Particularly, in the development of the power distribution network, the access and active control strategies of various distributed power sources are the main characteristics of the power distribution network, and the distributed energy sources have the characteristics of volatility, intermittence and the like, so that the difficulty in analyzing the power supply reliability of the power distribution network is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, one or more embodiments of the present disclosure provide a method and an apparatus for analyzing power distribution reliability of a power distribution network.
according to one aspect of one or more embodiments of the present disclosure, a method for analyzing power supply reliability of a power distribution network is provided.
a power distribution network power supply reliability analysis method comprises the following steps:
receiving a system architecture of a power distribution network;
Dividing a grid structure of the power distribution network into a plurality of feeder areas, and taking the feeder areas as minimum reliability analysis units;
receiving index factors influencing power supply reliability, and determining the index factors of each feeder area;
Respectively carrying out load flow calculation on each feeder line area, and correcting index factors of the feeder line areas according to the non-convergence load flow calculation result;
and establishing a power supply reliability analysis model according to the index factors of each feeder area, and respectively carrying out reliability calculation on the corresponding feeder areas in parallel according to the power supply reliability analysis model.
according to an aspect of one or more embodiments of the present disclosure, there is provided a computer-readable storage medium.
A computer readable storage medium, wherein a plurality of instructions are stored, said instructions being adapted to be loaded by a processor of a terminal device and to execute said method for analyzing power distribution reliability of a power distribution network.
In accordance with an aspect of one or more embodiments of the present disclosure, an electronic device is provided.
An electronic device comprising a processor and a computer-readable storage medium, the processor to implement instructions; the computer readable storage medium is used for storing a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the power distribution reliability analysis method for the power distribution network.
According to an aspect of one or more embodiments of the present disclosure, an analysis apparatus for power supply reliability of a power distribution network is provided.
a power distribution network power supply reliability analysis device is based on the power distribution network power supply reliability analysis method and comprises the following steps:
A data receiving module configured to receive a grid structure of a power distribution network;
The feeder area dividing module is configured to divide the grid structure of the power distribution network into a plurality of feeder areas, and the feeder areas are used as minimum reliability analysis units;
The index factor determination module is configured to receive index factors influencing power supply reliability and determine the index factors of each feeder area;
The index factor correction module is configured to respectively perform load flow calculation on each feeder line area and correct index factors of the feeder line areas according to the non-convergence load flow calculation result;
And the reliability parallel computing module is configured to establish a power supply reliability analysis model according to the index factors of each feeder area, and perform reliability computation of the corresponding feeder area in parallel according to the power supply reliability analysis model.
The beneficial effect of this disclosure:
according to the method and the device for analyzing the power supply reliability of the power distribution network, the system architecture of the power distribution network is divided into a plurality of feeder areas, reliability analysis indexes are set for each feeder area in parallel, a power supply reliability analysis model is established, reliability analysis calculation is carried out, and the power supply reliability analysis efficiency of the power distribution network is effectively improved.
Drawings
the accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
fig. 1 is a flow diagram of a method for analyzing power distribution reliability of a power distribution network according to one or more embodiments.
the specific implementation mode is as follows:
technical solutions in one or more embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in one or more embodiments of the present disclosure, and it is to be understood that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from one or more embodiments of the disclosure without making any creative effort, shall fall within the scope of protection of the disclosure.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
it is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It is noted that the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods and systems according to various embodiments of the present disclosure. It should be noted that each block in the flowchart or block diagrams may represent a module, a segment, or a portion of code, which may comprise one or more executable instructions for implementing the logical function specified in the respective embodiment. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Without conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other, and the present disclosure will be further described with reference to the drawings and the embodiments.
Example one
In order to achieve full online data flow clustering and improve the algorithm efficiency, according to one aspect of one or more embodiments of the present disclosure, a method for analyzing the power supply reliability of a power distribution network is provided.
as shown in fig. 1, a method for analyzing power supply reliability of a power distribution network includes:
A power distribution network power supply reliability analysis method comprises the following steps:
Step S1, receiving a system architecture of the power distribution network;
step S2, dividing the grid structure of the power distribution network into a plurality of feeder areas, and taking the feeder areas as minimum units for reliability analysis;
Step S3, receiving index factors influencing the power supply reliability and determining the index factors of each feeder area;
Step S4, respectively carrying out load flow calculation on each feeder line area, and correcting index factors of the feeder line areas according to the load flow calculation results which are not converged;
and step S5, establishing a power supply reliability analysis model according to the index factors of each feeder area, and respectively carrying out reliability calculation on the corresponding feeder areas in parallel according to the power supply reliability analysis model.
Further, in step S1 in this embodiment, the system architecture of the power distribution network is a power distribution network structure diagram, where the power distribution network structure diagram includes a power distribution network structure and a plurality of elements, and the power distribution network elements include a power distribution transformer, an isolating switch, a circuit breaker, a fuse, and a feeder.
Further, in step S2 of this embodiment, the specific step of dividing the grid structure of the power distribution network into a plurality of feeder areas includes: and a feeder line partition method is adopted, the switch element is used as an inlet element of the feeder line area, and the grid structure of the power distribution network is divided into a plurality of feeder line areas.
further, in step S3 in this embodiment, an original index factor that affects the reliability of power supply is received, and the original index factor is subjected to normalization processing to obtain an index factor for reliability analysis.
Further, in step S3 of this embodiment, the specific step of determining the index factor of each feeder area includes:
Establishing an equivalent power network for each feeder line area;
And respectively determining the index factors of each element in the equivalent power network of each feeder area according to the index factors influencing the power supply reliability.
Further, in step S3 in this embodiment, a correlation coefficient between each of the standardized index factors and a preset reliability evaluation index is calculated, and a core index factor having a significant influence on power supply reliability is screened out from the index factors according to the correlation coefficient.
Further, in step S4 in this embodiment, power flow calculation is performed on data such as generator output power, transformer, line, load power flow, etc., and it is determined whether the calculation result converges, and if so, reliability analysis is performed, otherwise, the process returns to step S3 to perform correction.
Further, in step S5 of this embodiment, the power supply reliability analysis model is constructed based on a radial basis function neural network, and the specific steps include:
Receiving an optimal center vector, an optimal base width vector and an optimal output weight of a hidden layer of a radial basis function neural network, and respectively constructing a power supply reliability analysis model by combining index factors of each feeder line area according to the optimal center vector, the optimal base width vector and the optimal output weight;
and respectively carrying out reliability calculation on the corresponding feeder line areas in parallel according to the power supply reliability analysis model.
the embodiment selects a plurality of index factors influencing the power supply reliability; carrying out standardization processing on the original data by utilizing correlation analysis, calculating correlation coefficients between various indexes influencing power supply reliability and reliability evaluation indexes, and qualitatively analyzing the indexes which have obvious influence on the power supply reliability; and constructing a radial basis function neural network, optimizing a central vector, a base width vector and an output weight of the hidden layer, and finishing the training of the power supply reliability analysis model. The power supply reliability influence factors in multiple aspects are fully considered, the characteristic indexes are subjected to pre-screening processing by utilizing the correlation analysis theory, and the prediction precision, the stability and the generalization performance of the radial basis function neural network training model are effectively improved.
example two
According to an aspect of one or more embodiments of the present disclosure, there is provided a computer-readable storage medium.
A computer readable storage medium, wherein a plurality of instructions are stored, said instructions being adapted to be loaded by a processor of a terminal device and to execute said method for analyzing power distribution reliability of a power distribution network.
EXAMPLE III
In accordance with an aspect of one or more embodiments of the present disclosure, an electronic device is provided.
an electronic device comprising a processor and a computer-readable storage medium, the processor to implement instructions; the computer readable storage medium is used for storing a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the power distribution reliability analysis method for the power distribution network.
these computer-executable instructions, when executed in a device, cause the device to perform methods or processes described in accordance with various embodiments of the present disclosure.
in the present embodiments, a computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for performing various aspects of the present disclosure. The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
the computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction set architecture (isa) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry can execute computer-readable program instructions to implement aspects of the present disclosure by utilizing state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Example four
a power distribution network power supply reliability analysis device is based on the power distribution network power supply reliability analysis method and comprises the following steps:
a data receiving module configured to receive a grid structure of a power distribution network;
The feeder area dividing module is configured to divide the grid structure of the power distribution network into a plurality of feeder areas, and the feeder areas are used as minimum reliability analysis units;
The index factor determination module is configured to receive index factors influencing power supply reliability and determine the index factors of each feeder area;
the index factor correction module is configured to respectively perform load flow calculation on each feeder line area and correct index factors of the feeder line areas according to the non-convergence load flow calculation result;
and the reliability parallel computing module is configured to establish a power supply reliability analysis model according to the index factors of each feeder area, and perform reliability computation of the corresponding feeder area in parallel according to the power supply reliability analysis model.
it should be noted that although several modules or sub-modules of the device are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the modules described above may be embodied in one module in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module described above may be further divided into embodiments by a plurality of modules.
the beneficial effect of this disclosure:
According to the method and the device for analyzing the power supply reliability of the power distribution network, the system architecture of the power distribution network is divided into a plurality of feeder areas, reliability analysis indexes are set for each feeder area in parallel, a power supply reliability analysis model is established, reliability analysis calculation is carried out, and the power supply reliability analysis efficiency of the power distribution network is effectively improved.
the above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. a power distribution network power supply reliability analysis method is characterized by comprising the following steps:
Receiving a system architecture of a power distribution network;
Dividing a grid structure of the power distribution network into a plurality of feeder areas, and taking the feeder areas as minimum reliability analysis units;
receiving index factors influencing power supply reliability, and determining the index factors of each feeder area;
Respectively carrying out load flow calculation on each feeder line area, and correcting index factors of the feeder line areas according to the non-convergence load flow calculation result;
And establishing a power supply reliability analysis model according to the index factors of each feeder area, and respectively carrying out reliability calculation on the corresponding feeder areas in parallel according to the power supply reliability analysis model.
2. the method according to claim 1, wherein in the method, the system architecture of the power distribution network is a structure diagram of the power distribution network, the structure diagram of the power distribution network includes a structure of the power distribution network and several elements, and the elements of the power distribution network include distribution transformers, disconnectors, circuit breakers, fuses and feeders.
3. The method according to claim 1, wherein the step of dividing the grid structure of the distribution network into a plurality of feeder areas comprises: and a feeder line partition method is adopted, the switch element is used as an inlet element of the feeder line area, and the grid structure of the power distribution network is divided into a plurality of feeder line areas.
4. The method according to claim 1, wherein the method comprises receiving original index factors affecting the reliability of power supply, and performing standardization processing on the original index factors to obtain index factors for reliability analysis.
5. The method according to claim 1, wherein the step of determining the indicator factors for each feeder area comprises:
Establishing an equivalent power network for each feeder line area;
and respectively determining the index factors of each element in the equivalent power network of each feeder area according to the index factors influencing the power supply reliability.
6. The method for analyzing the power supply reliability of the power distribution network according to claim 1, wherein the method further comprises: and calculating a correlation coefficient between each standardized index factor and a preset reliability evaluation index, and screening out core index factors which have obvious influence on power supply reliability from the index factors according to the correlation coefficient.
7. the method for analyzing the power supply reliability of the power distribution network according to claim 1, wherein in the method, the power supply reliability analysis model is constructed based on a radial basis function neural network, and the specific steps include:
receiving an optimal center vector, an optimal base width vector and an optimal output weight of a hidden layer of a radial basis function neural network, and respectively constructing a power supply reliability analysis model by combining index factors of each feeder line area according to the optimal center vector, the optimal base width vector and the optimal output weight;
And respectively carrying out reliability calculation on the corresponding feeder line areas in parallel according to the power supply reliability analysis model.
8. A computer-readable storage medium having stored thereon a plurality of instructions, wherein the instructions are adapted to be loaded by a processor of a terminal device and to perform a method for analyzing the reliability of power supply to a power distribution network according to any of claims 1 to 7.
9. An electronic device comprising a processor and a computer-readable storage medium, the processor to implement instructions; a computer-readable storage medium for storing a plurality of instructions adapted to be loaded by a processor and to perform a method for analyzing the reliability of power supply to a power distribution network according to any of claims 1 to 7.
10. A power distribution network power supply reliability analysis device, based on the power distribution network power supply reliability analysis method as claimed in any one of claims 1 to 7, comprising:
A data receiving module configured to receive a grid structure of a power distribution network;
the feeder area dividing module is configured to divide the grid structure of the power distribution network into a plurality of feeder areas, and the feeder areas are used as minimum reliability analysis units;
the index factor determination module is configured to receive index factors influencing power supply reliability and determine the index factors of each feeder area;
The index factor correction module is configured to respectively perform load flow calculation on each feeder line area and correct index factors of the feeder line areas according to the non-convergence load flow calculation result;
And the reliability parallel computing module is configured to establish a power supply reliability analysis model according to the index factors of each feeder area, and perform reliability computation of the corresponding feeder area in parallel according to the power supply reliability analysis model.
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Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |