CN115392795A - Transformation assessment method, system, equipment and medium for power distribution network - Google Patents
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Abstract
The invention provides a method, a system, equipment and a medium for evaluating the transformation of a power distribution network, wherein the method comprises the steps of acquiring a plurality of operation parameters of the power distribution network to be transformed in the operation process, and determining a plurality of preset transformation schemes corresponding to the power distribution network to be transformed by combining the type of an area where the power distribution network to be transformed is located; acquiring a plurality of evaluation indexes in the plurality of preset reconstruction schemes, distributing corresponding weight values to the plurality of evaluation indexes respectively, and determining a comprehensive evaluation value according to the plurality of evaluation indexes and the corresponding weight values; and outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result. The method provided by the invention brings a plurality of evaluation indexes into comprehensive evaluation, so that the evaluation result is more reasonable.
Description
Technical Field
The invention relates to the technical field of power distribution networks, in particular to a method, a system, equipment and a medium for evaluating the transformation of a power distribution network.
Background
Along with the abundance of the types and the quantity of the power loads and the continuous improvement of the requirements of users on the power supply quality, simultaneously, the uncertainty influence brought by the gradual increase of the permeability of the distributed power supply puts forward higher requirements on the structure and the performance of a power grid.
The comprehensive decision of the power grid transformation scheme is a scheme optimization problem, and comprises the steps of establishing comprehensive evaluation indexes, and performing comprehensive evaluation and sequencing on the transformation scheme by using a proper evaluation method.
The existing power grid transformation method does not fully consider the ambiguity and uncertainty of the preference of a decision maker; the subjective and objective information in the decision making is not fully utilized, and the evaluation result is greatly influenced by the subjectivity.
Disclosure of Invention
The embodiment of the invention provides a method, a system, equipment and a medium for evaluating the transformation of a power distribution network, which can solve the problem that the evaluation result of a power grid transformation scheme in the prior art is not comprehensive enough.
In a first aspect of an embodiment of the present invention,
provided is a transformation assessment method for a power distribution network, the method comprising:
acquiring a plurality of operation parameters of a power distribution network to be modified in an operation process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining with the type of an area where the power distribution network to be modified is located, wherein the type of the area comprises at least one of cities, towns and villages, and the preset modification schemes comprise a plurality of first modification schemes corresponding to the cities, a plurality of second modification schemes corresponding to the towns and a plurality of third modification schemes corresponding to the villages;
acquiring a plurality of evaluation indexes in the plurality of preset modification schemes, respectively allocating corresponding weight values to the plurality of evaluation indexes, and determining a comprehensive evaluation value according to the plurality of evaluation indexes and the corresponding weight values, wherein the weight values comprise a first weight value and a second weight value, and the comprehensive evaluation value is used for indicating the value corresponding to the evaluation of the first weight value and the second weight value of the plurality of preset modification schemes;
and outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
In an alternative embodiment of the method according to the invention,
the plurality of evaluation indexes comprise at least one of a power distribution network loss index, a distributed power supply penetration index, a reliability index and a power distribution network cost index;
the method for acquiring the plurality of evaluation indexes in the plurality of preset modification schemes and respectively allocating the corresponding weight values to the plurality of evaluation indexes comprises the following steps:
constructing an interval intuition fuzzy judgment matrix based on a positive interval preferred by a decision maker when the decision maker compares the importance degrees of the plurality of evaluation indexes and a hesitation degree interval when the decision maker evaluates the importance degrees of the plurality of evaluation indexes;
and determining first weight values corresponding to the plurality of evaluation indexes based on the interval intuitive fuzzy judgment matrix and a consistency check method.
In an alternative embodiment of the method according to the invention,
the method for acquiring the plurality of evaluation indexes in the plurality of preset modification schemes and respectively allocating the corresponding weight values to the plurality of evaluation indexes comprises the following steps:
acquiring scheme attribute matrixes corresponding to the evaluation indexes, and carrying out standardization processing on the scheme attribute matrixes to convert the scheme attribute matrixes into standard matrixes;
and determining second weighted values corresponding to the evaluation indexes by an objective weighting method based on the standard matrix, the information content in the evaluation indexes, the standard deviation of the evaluation indexes and the conflict value of the coefficients corresponding to different evaluation indexes.
In an alternative embodiment of the method according to the invention,
the method for determining the comprehensive evaluation value according to the plurality of evaluation indexes and the corresponding weight values comprises the following steps:
respectively setting evaluation parameters of the weight values corresponding to the evaluation indexes according to the evaluation indexes and the corresponding weight values, and determining a comprehensive weight value according to a minimum information identification algorithm;
determining a weighted attribute decision matrix according to the comprehensive weight values and a good-bad solution distance algorithm, and determining the closeness of the preset reconstruction schemes according to the weighted attribute decision matrix;
and determining the comprehensive evaluation value through a scoring and sorting algorithm of a score function according to the closeness of the preset reconstruction schemes.
In a second aspect of an embodiment of the present invention,
there is provided a transformation assessment system for an electrical distribution network, the system comprising:
the system comprises a first unit, a second unit and a third unit, wherein the first unit is used for acquiring a plurality of operation parameters of a power distribution network to be modified in the operation process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining the type of an area where the power distribution network to be modified is located, wherein the type of the area comprises at least one of cities, towns and villages, and the preset modification schemes comprise a plurality of first modification schemes corresponding to the cities, a plurality of second modification schemes corresponding to the towns and a plurality of third modification schemes corresponding to the villages;
a second unit, configured to obtain multiple evaluation indexes in the multiple preset modification schemes, assign corresponding weight values to the multiple evaluation indexes, and determine a comprehensive evaluation value according to the multiple evaluation indexes and the corresponding weight values, where the weight values include a first weight value and a second weight value, and the comprehensive evaluation value is used to indicate a value corresponding to an evaluation corresponding to the first weight value and the second weight value of the multiple preset modification schemes;
and the third unit is used for outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
In an alternative embodiment of the method according to the invention,
the plurality of evaluation indexes comprise at least one of a power distribution network loss index, a distributed power supply penetration index, a reliability index and a power distribution network cost index;
the second unit is further configured to:
constructing an interval intuition fuzzy judgment matrix based on a positive interval preferred by a decision maker when the decision maker compares the importance degrees of the plurality of evaluation indexes and a hesitation degree interval when the decision maker evaluates the importance degrees of the plurality of evaluation indexes;
and determining first weight values corresponding to the plurality of evaluation indexes based on the interval intuitive fuzzy judgment matrix and a consistency check method.
In an alternative embodiment of the method according to the invention,
the second unit is further configured to:
acquiring scheme attribute matrixes corresponding to the evaluation indexes, and carrying out standardization processing on the scheme attribute matrixes to convert the scheme attribute matrixes into standard matrixes;
and determining second weighted values corresponding to the plurality of evaluation indexes through an objective weighting method based on the standard matrix, the information content of the plurality of evaluation indexes, the standard deviation of the plurality of evaluation indexes and the conflict value of the coefficients corresponding to different evaluation indexes.
In an alternative embodiment of the method according to the invention,
the third unit is further configured to:
respectively setting evaluation parameters of the weighted values corresponding to the evaluation indexes according to the evaluation indexes and the corresponding weighted values, and determining a comprehensive weighted value according to a minimum information identification algorithm;
determining a weighting attribute decision matrix according to the comprehensive weight value and a good-bad solution distance algorithm, and determining the closeness of the preset reconstruction schemes according to the weighting attribute decision matrix;
and determining the comprehensive evaluation value through a scoring and sorting algorithm of a score function according to the closeness of the preset reconstruction schemes.
In a third aspect of an embodiment of the present invention,
providing an apparatus comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to invoke the memory-stored instructions to perform the aforementioned method.
In a fourth aspect of an embodiment of the present invention,
there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method as set out above.
The embodiment of the invention provides a method for evaluating the transformation of a power distribution network, which comprises the following steps:
acquiring a plurality of operating parameters of a power distribution network to be modified in an operating process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining the type of an area where the power distribution network to be modified is located; acquiring a plurality of evaluation indexes in the preset transformation schemes, distributing corresponding weight values for the evaluation indexes respectively, and determining a comprehensive evaluation value according to the evaluation indexes and the corresponding weight values; and outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
The method can comprehensively consider the ambiguity and uncertainty of the preference of a decision maker, fully utilize subjective and objective information in decision making, and bring a plurality of evaluation indexes into comprehensive evaluation, so that the evaluation result is more reasonable.
Drawings
Fig. 1 is a schematic flow chart of a method for evaluating transformation of a power distribution network according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a modification evaluation system of a power distribution network according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein.
It should be understood that, in the various embodiments of the present invention, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that in the present application, "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that, in the present invention, "a plurality" means two or more. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, for example, and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "comprising a, B and C", "comprising a, B, C" means that all three of a, B, C are comprised, "comprising a, B or C" means comprising one of a, B, C, "comprising a, B and/or C" means comprising any 1 or any 2 or 3 of a, B, C.
It should be understood that in the present invention, "B corresponding to a", "a corresponds to B", or "B corresponds to a" means that B is associated with a, and B can be determined from a. Determining B from a does not mean determining B from a alone, but may be determined from a and/or other information. And the matching of A and B means that the similarity of A and B is greater than or equal to a preset threshold value.
As used herein, the term "if" may be interpreted as "at \8230; …" or "in response to a determination" or "in response to a detection" depending on the context.
The technical means of the present invention will be described in detail with reference to specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic flow chart of a method for evaluating transformation of a power distribution network according to an embodiment of the present invention, and as shown in fig. 1, the method includes:
s101, obtaining a plurality of operation parameters of the power distribution network to be modified in the operation process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining the type of the area where the power distribution network to be modified is located;
exemplarily, the area type includes at least one of a city, a town and a country, and the preset reconstruction scheme includes a plurality of first reconstruction schemes corresponding to the city, a plurality of second reconstruction schemes corresponding to the town and a plurality of third reconstruction schemes corresponding to the country;
illustratively, the first modification may include transforming the low-voltage distribution network into a hybrid ac/dc line of a parallel monopole structure; the second transformation scheme can comprise that the low-voltage distribution network is transformed into an alternating current-direct current hybrid line with a loop and a bipolar structure; a third modification may include modification of the low voltage distribution network to a modified hybrid ac/dc line having a looped bipolar configuration.
S102, obtaining a plurality of evaluation indexes in the preset transformation schemes, distributing corresponding weight values for the evaluation indexes respectively, and determining a comprehensive evaluation value according to the evaluation indexes and the corresponding weight values;
illustratively, the weighted values include a first weighted value and a second weighted value, and the comprehensive evaluation value is used for indicating a value corresponding to evaluation corresponding to the first weighted value and the second weighted value of the plurality of preset modification schemes; in the embodiment of the present invention, the first weight value and the second weight value may correspond to a subjective weight value and an objective weight value, respectively.
In an alternative embodiment of the method according to the invention,
the multiple evaluation indexes comprise at least one of a power distribution network loss index, a distributed power supply penetration index, a reliability index and a power distribution network cost index;
the method for acquiring the plurality of evaluation indexes in the plurality of preset modification schemes and respectively allocating the corresponding weight values to the plurality of evaluation indexes comprises the following steps:
constructing an interval intuition fuzzy judgment matrix based on a positive interval preferred by a decision maker when the decision maker compares the importance degrees of the plurality of evaluation indexes and a hesitation degree interval when the decision maker evaluates the importance degrees of the plurality of evaluation indexes;
and determining first weight values corresponding to the plurality of evaluation indexes based on the interval intuitive fuzzy judgment matrix and a consistency check method.
The method for determining the first weight value may be as follows:
wherein, the first and the second end of the pipe are connected with each other,
indicating the indexiAnd indexjA corresponding first weight value of the first weight value,m、nrespectively represent indexesiAnd indexjThe number of the corresponding ones is such that,
representing decision maker versus indexiAnd indexjThe importance degree of the above-mentioned two kinds of data is compared to obtain a preference indexiThe interval of the positive degree of (c),
representing decision maker versus indexiAnd indexjThe degree of importance of (b) is evaluated in the hesitation degree section.
In an alternative embodiment of the method according to the invention,
the method for acquiring the multiple evaluation indexes in the multiple preset reconstruction schemes and distributing the corresponding weight values to the multiple evaluation indexes respectively comprises the following steps:
acquiring scheme attribute matrixes corresponding to the evaluation indexes, and carrying out standardization processing on the scheme attribute matrixes to convert the scheme attribute matrixes into standard matrixes;
and determining second weighted values corresponding to the evaluation indexes by an objective weighting method based on the standard matrix, the information content in the evaluation indexes, the standard deviation of the evaluation indexes and the conflict value of the coefficients corresponding to different evaluation indexes.
The method for determining the second weight value may be represented by the following formula:
wherein the content of the first and second substances,M i indicating indexiThe amount of information contained in the information,s i 、s j respectively represent indexesiAnd indexjThe standard deviation of the (c) is,m、nrespectively represent indexesiAnd indexjThe number of the corresponding ones is such that,
indicating indexiAnd indexjThe correlation coefficient of (a) is calculated,
、
respectively represent indexesiAnd indexjAnd the derivative of the sample values,G i 、G j respectively represent indexesiIs a sum index ofjThe value of the conflict corresponding to the coefficient,covrepresenting the objective function.
In an alternative embodiment of the method according to the invention,
the method for determining the comprehensive evaluation value according to the plurality of evaluation indexes and the corresponding weight values comprises the following steps:
respectively setting evaluation parameters of the weight values corresponding to the evaluation indexes according to the evaluation indexes and the corresponding weight values, and determining a comprehensive weight value according to a minimum information identification algorithm;
determining a weighting attribute decision matrix according to the comprehensive weight value and a good-bad solution distance algorithm, and determining the closeness of the preset reconstruction schemes according to the weighting attribute decision matrix;
and determining the comprehensive evaluation value through a scoring and sorting algorithm of a score function according to the closeness of the preset reconstruction schemes.
Among them, the method of determining the comprehensive evaluation value may be represented by the following formula:
wherein, the first and the second end of the pipe are connected with each other,minJ()which represents the minimization of the objective function of the objective,wwhich indicates the overall evaluation value, represents,w ij indicating the indexiAnd indexjThe corresponding integrated weight value of the weight value,
、
respectively represent indexesiAnd indexjCorresponding first weight value and second weight value;
C ij indicating indexiAnd indexjThe corresponding degree of closeness is determined,Z + a decision matrix of the weighted attributes is represented,z ij indicating the indexiAnd indexjThe corresponding weighted attribute value.
S103, outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
Illustratively, according to the sequencing result of the comprehensive evaluation value, the effects of the preset modification scheme on the power quality, the power supply reliability of a power grid and the like in practical application can be comprehensively evaluated, and the coordination control and the comprehensive treatment on various power quality problems are facilitated.
The embodiment of the invention provides a method for evaluating the transformation of a power distribution network, which comprises the following steps:
acquiring a plurality of operating parameters of a power distribution network to be modified in an operating process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining the type of an area where the power distribution network to be modified is located; acquiring a plurality of evaluation indexes in the plurality of preset reconstruction schemes, distributing corresponding weight values to the plurality of evaluation indexes respectively, and determining a comprehensive evaluation value according to the plurality of evaluation indexes and the corresponding weight values; and outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
The method can comprehensively consider the ambiguity and uncertainty of the preference of a decision maker, fully utilize subjective and objective information in decision making, and bring a plurality of evaluation indexes into comprehensive evaluation, so that the evaluation result is more reasonable.
In a second aspect of an embodiment of the present invention,
a transformation evaluation system of a power distribution network is provided, fig. 2 is a schematic structural diagram of the transformation evaluation system of the power distribution network according to the embodiment of the present invention, and as shown in fig. 2, the system includes:
the first unit 21 is configured to obtain multiple operation parameters of a power distribution network to be modified in an operation process, and determine multiple preset modification schemes corresponding to the power distribution network to be modified in combination with a type of an area where the power distribution network to be modified is located, where the type of the area includes at least one of a city, a town, and a country, and the preset modification schemes include multiple first modification schemes corresponding to the city, multiple second modification schemes corresponding to the town, and multiple third modification schemes corresponding to the country;
a second unit 22, configured to obtain a plurality of evaluation indicators in the plurality of preset modification schemes, assign corresponding weight values to the plurality of evaluation indicators, and determine a comprehensive evaluation value according to the plurality of evaluation indicators and the corresponding weight values, where the weight values include a first weight value and a second weight value, and the comprehensive evaluation value is used to indicate a value corresponding to an evaluation corresponding to the first weight value and the second weight value of the plurality of preset modification schemes;
and a third unit 23, configured to output, according to a ranking result of the comprehensive evaluation value, a priority of a corresponding preset modification scheme according to an order corresponding to the ranking result.
In an alternative embodiment of the method according to the invention,
the plurality of evaluation indexes comprise at least one of a power distribution network loss index, a distributed power supply penetration index, a reliability index and a power distribution network cost index;
the second unit 21 is further configured to:
constructing an interval intuition fuzzy judgment matrix based on a positive interval preferred by a decision maker when the decision maker compares the importance degrees of the plurality of evaluation indexes and a hesitation degree interval when the decision maker evaluates the importance degrees of the plurality of evaluation indexes;
and determining first weight values corresponding to the plurality of evaluation indexes based on the interval intuitive fuzzy judgment matrix and a consistency check method.
In an alternative embodiment of the method according to the invention,
the second unit 21 is further configured to:
acquiring scheme attribute matrixes corresponding to the evaluation indexes, and carrying out standardization processing on the scheme attribute matrixes to convert the scheme attribute matrixes into standard matrixes;
and determining second weighted values corresponding to the evaluation indexes by an objective weighting method based on the standard matrix, the information content in the evaluation indexes, the standard deviation of the evaluation indexes and the conflict value of the coefficients corresponding to different evaluation indexes.
In an alternative embodiment of the method according to the invention,
the third unit 23 is further configured to:
respectively setting evaluation parameters of the weight values corresponding to the evaluation indexes according to the evaluation indexes and the corresponding weight values, and determining a comprehensive weight value according to a minimum information identification algorithm;
determining a weighted attribute decision matrix according to the comprehensive weight values and a good-bad solution distance algorithm, and determining the closeness of the preset reconstruction schemes according to the weighted attribute decision matrix;
and determining the comprehensive evaluation value through a scoring function scoring sorting algorithm according to the closeness of the preset reconstruction schemes.
In a third aspect of an embodiment of the present invention,
providing an apparatus comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to invoke the memory-stored instructions to perform the aforementioned method.
In a fourth aspect of an embodiment of the present invention,
there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method as described above.
The present invention may be methods, apparatus, systems and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied therein for carrying out aspects of the present invention.
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 via 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 the 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 invention 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 Smalltalk, 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, aspects of the present invention are implemented by personalizing an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), with state information of computer-readable program instructions, which can execute the computer-readable program instructions.
Aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood 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 computer-readable program instructions.
These computer-readable program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). 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 block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It is noted that, unless expressly stated otherwise, all the features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features. Where used, it is further preferred, even further and more preferred that the brief introduction of the further embodiment is made on the basis of the preceding embodiment, the contents of which further, preferably, even further or more preferred the rear band is combined with the preceding embodiment as a complete constituent of the further embodiment. Several further, preferred, still further or more preferred arrangements of the belt after the same embodiment may be combined in any combination to form a further embodiment.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for assessing the transformation of a power distribution network, the method comprising:
acquiring a plurality of operation parameters of a power distribution network to be modified in an operation process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining with the type of an area where the power distribution network to be modified is located, wherein the type of the area comprises at least one of cities, towns and villages, and the preset modification schemes comprise a plurality of first modification schemes corresponding to the cities, a plurality of second modification schemes corresponding to the towns and a plurality of third modification schemes corresponding to the villages;
acquiring a plurality of evaluation indexes in the plurality of preset modification schemes, respectively allocating corresponding weight values to the plurality of evaluation indexes, and determining a comprehensive evaluation value according to the plurality of evaluation indexes and the corresponding weight values, wherein the weight values comprise a first weight value and a second weight value, and the comprehensive evaluation value is used for indicating the value corresponding to the evaluation of the first weight value and the second weight value of the plurality of preset modification schemes;
and outputting the priority of the corresponding preset transformation scheme according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
2. The method of claim 1, wherein the plurality of evaluation metrics includes at least one of a power distribution grid loss metric, a distributed power penetration metric, a reliability metric, and a power distribution grid cost metric;
the method for acquiring the multiple evaluation indexes in the multiple preset reconstruction schemes and distributing the corresponding weight values to the multiple evaluation indexes respectively comprises the following steps:
constructing an interval intuition fuzzy judgment matrix based on a positive interval preferred by a decision maker when the decision maker compares the importance degrees of the plurality of evaluation indexes and a hesitation degree interval when the decision maker evaluates the importance degrees of the plurality of evaluation indexes;
and determining first weight values corresponding to the plurality of evaluation indexes based on the interval intuitive fuzzy judgment matrix and a consistency check method.
3. The method according to claim 2, wherein the obtaining of the plurality of evaluation indexes in the plurality of preset modification schemes, and the method for respectively assigning the plurality of evaluation indexes with corresponding weight values comprises:
acquiring scheme attribute matrixes corresponding to the evaluation indexes, and carrying out standardization processing on the scheme attribute matrixes to convert the scheme attribute matrixes into standard matrixes;
and determining second weighted values corresponding to the plurality of evaluation indexes through an objective weighting method based on the standard matrix, the information content of the plurality of evaluation indexes, the standard deviation of the plurality of evaluation indexes and the conflict value of the coefficients corresponding to different evaluation indexes.
4. The method according to claim 1, wherein the method of determining the composite evaluation value according to the plurality of evaluation indicators and the corresponding weight values comprises:
respectively setting evaluation parameters of the weight values corresponding to the evaluation indexes according to the evaluation indexes and the corresponding weight values, and determining a comprehensive weight value according to a minimum information identification algorithm;
determining a weighted attribute decision matrix according to the comprehensive weight values and a good-bad solution distance algorithm, and determining the closeness of the preset reconstruction schemes according to the weighted attribute decision matrix;
and determining the comprehensive evaluation value through a scoring and sorting algorithm of a score function according to the closeness of the preset reconstruction schemes.
5. A transformation assessment system for a power distribution network, the system comprising:
the system comprises a first unit, a second unit and a third unit, wherein the first unit is used for acquiring a plurality of operation parameters of a power distribution network to be modified in the operation process, and determining a plurality of preset modification schemes corresponding to the power distribution network to be modified by combining the type of an area where the power distribution network to be modified is located, wherein the type of the area comprises at least one of cities, towns and villages, and the preset modification schemes comprise a plurality of first modification schemes corresponding to the cities, a plurality of second modification schemes corresponding to the towns and a plurality of third modification schemes corresponding to the villages;
a second unit, configured to obtain multiple evaluation indexes in the multiple preset modification schemes, assign corresponding weight values to the multiple evaluation indexes, and determine a comprehensive evaluation value according to the multiple evaluation indexes and the corresponding weight values, where the weight values include a first weight value and a second weight value, and the comprehensive evaluation value is used to indicate a value corresponding to an evaluation corresponding to the first weight value and the second weight value of the multiple preset modification schemes;
and the third unit is used for outputting the priorities of the corresponding preset transformation schemes according to the sequencing result of the comprehensive evaluation value and the sequence corresponding to the sequencing result.
6. The system of claim 5, wherein the plurality of evaluation indicators includes at least one of a distribution grid loss indicator, a distributed power penetration indicator, a reliability indicator, and a distribution grid cost indicator;
the second unit is further configured to:
constructing an interval intuition fuzzy judgment matrix based on a positive interval preferred by a decision maker when the decision maker compares the importance degrees of the plurality of evaluation indexes and a hesitation degree interval when the decision maker evaluates the importance degrees of the plurality of evaluation indexes;
and determining first weight values corresponding to the plurality of evaluation indexes based on the interval intuitive fuzzy judgment matrix and a consistency check method.
7. The system of claim 5, wherein the third unit is further configured to:
respectively setting evaluation parameters of the weighted values corresponding to the evaluation indexes according to the evaluation indexes and the corresponding weighted values, and determining a comprehensive weighted value according to a minimum information identification algorithm;
determining a weighted attribute decision matrix according to the comprehensive weight values and a good-bad solution distance algorithm, and determining the closeness of the preset reconstruction schemes according to the weighted attribute decision matrix;
and determining the comprehensive evaluation value through a scoring and sorting algorithm of a score function according to the closeness of the preset reconstruction schemes.
8. The system of claim 6, wherein the second unit is further configured to:
acquiring scheme attribute matrixes corresponding to the evaluation indexes, and carrying out standardization processing on the scheme attribute matrixes to convert the scheme attribute matrixes into standard matrixes;
and determining second weighted values corresponding to the evaluation indexes by an objective weighting method based on the standard matrix, the information content in the evaluation indexes, the standard deviation of the evaluation indexes and the conflict value of the coefficients corresponding to different evaluation indexes.
9. An apparatus, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to invoke the memory-stored instructions to perform the method of any of claims 1 to 4.
10. A computer readable storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the method of any one of claims 1 to 4.
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