CN112541735B - Medium-low voltage distribution network project optimizing method and device - Google Patents
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Abstract
The application discloses a method and a device for optimizing a medium-low voltage distribution network project, wherein the method comprises the following steps: acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage; based on each power distribution network project, acquiring a reference score corresponding to each power distribution network project according to the mapping relation between the power distribution network project and the reference score; obtaining index benefit ratio of each power distribution network project according to project planning information and index data; normalizing the benefit ratio of each index to obtain additional points of each power distribution network project; and calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores. The technical problem that the development decision basis of the power distribution network is insufficient due to the fact that a scientific and effective project optimization method is lacked in the prior art is solved.
Description
Technical Field
The application relates to the technical field of power systems, in particular to a project optimizing method and device for a medium-low voltage distribution network.
Background
In recent years, with the acceleration of new rural power grid transformation, power distribution network planning projects gradually become development emphasis of power enterprises, and a large number of power distribution network projects are required to be put into production every year.
However, in the prior art, a scientific and effective project optimization method is lacked, which results in insufficient basis for development decisions of the power distribution network. Under the condition that investment is continuously increased, how to reasonably use limited resources such as manpower, equipment and the like for medium-low voltage distribution network projects becomes a problem to be solved urgently in investment decision-making of power grid enterprises.
Disclosure of Invention
In view of the above, the application provides a project optimizing method and device for a medium-low voltage power distribution network, which solve the technical problem that the prior art lacks a scientific and effective project optimizing method, so that the development decision basis of the power distribution network is insufficient.
The first aspect of the application provides a method for optimizing a medium-low voltage distribution network project, which comprises the following steps:
acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage;
based on each power distribution network project, acquiring a reference score corresponding to each power distribution network project according to the mapping relation between the power distribution network project and the reference score;
obtaining the index benefit ratio of each power distribution network project according to the project planning information and the index data;
normalizing each index benefit ratio to obtain additional points of each power distribution network project;
and calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores.
Preferably, the method further includes obtaining an index benefit ratio of each power distribution network project according to the project planning information and the index data, specifically including:
calculating the improvement degree of each power distribution network project on the index data by combining the index data value of each power distribution network project after implementation based on the project planning information and the index data;
according to the medium-low voltage index weight and each improvement degree, calculating the comprehensive contribution degree of each power distribution network project to the index data;
dividing the comprehensive contribution degree by the total investment of the project to obtain the index benefit ratio of the project of the power distribution network.
Preferably, based on each distribution network project, according to a mapping relationship between the distribution network project and the reference score, the reference score corresponding to each distribution network project is obtained, which specifically includes:
and acquiring the reference score of each power distribution network project according to the mapping relation between the project attribute category of each power distribution network project and the reference score based on the project attribute category of each power distribution network project.
Preferably, the distribution network project includes: the medium voltage distribution network project, the index data corresponding to the medium voltage distribution network project comprises: the power supply rate and the feeder automation effective coverage rate can be changed.
Preferably, the distribution network project includes: the low-voltage distribution network project, the index data corresponding to the low-voltage distribution network project comprises: overload distribution ratio, pre-overload distribution ratio and low voltage common area ratio.
The second aspect of the present application provides a medium-low voltage distribution network project preferential apparatus, including:
the first acquisition unit is used for acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage;
the second acquisition unit is used for acquiring the reference points corresponding to the distribution network projects according to the mapping relation between the distribution network projects and the reference points based on the distribution network projects;
the first calculation unit is used for obtaining the index benefit ratio of each power distribution network project according to the project planning information and the index data;
the second calculation unit is used for carrying out normalization processing on each index benefit ratio to obtain additional points of each power distribution network project;
and the third calculation unit is used for calculating the comprehensive score of each power distribution network project according to the reference score and the additional score of each power distribution network project, and determining an optimal power distribution network project list according to the comprehensive score.
Preferably, the first computing unit specifically includes:
the first calculating subunit is used for calculating the improvement degree of each power distribution network project on the index data based on the project planning information and the index data and combining the index data value of each power distribution network project after implementation;
the second calculating subunit is used for calculating the comprehensive contribution degree of each power distribution network project to the index data according to the middle-low voltage index weight and each improvement degree;
and the third calculation subunit is used for dividing the comprehensive contribution degree by the total investment of the project to obtain the index benefit ratio of the power distribution network project.
Preferably, the second obtaining unit is specifically configured to obtain, based on the item attribute category of each power distribution network item, a reference score of each power distribution network item according to a mapping relationship between the item attribute category of each power distribution network item and the reference score.
Preferably, the distribution network project includes: the medium voltage distribution network project, the index data corresponding to the medium voltage distribution network project comprises: the power supply rate and the feeder automation effective coverage rate can be changed.
Preferably, the distribution network project includes: the low-voltage distribution network project, the index data corresponding to the low-voltage distribution network project comprises: overload distribution ratio, pre-overload distribution ratio and low voltage common area ratio.
From the above technical solutions, the embodiments of the present application have the following advantages:
the application provides a project optimizing method for a medium-low voltage power distribution network, which comprises the following steps: acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage; based on each power distribution network project, acquiring a reference score corresponding to each power distribution network project according to the mapping relation between the power distribution network project and the reference score; obtaining index benefit ratio of each power distribution network project according to project planning information and index data; normalizing the benefit ratio of each index to obtain additional points of each power distribution network project; and calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores. In the method, the project of the power distribution network is selected based on the index data of the power distribution network, so that the scientificity and rationality of project investment decisions are enhanced, the power grid investment benefit is improved, and the technical problem that the prior art lacks a scientific and effective project optimization method, and the development decision basis of the power distribution network is insufficient is solved.
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In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic flow chart of an embodiment of a method for optimizing a medium-low voltage distribution network project in the embodiment of the present application;
fig. 2 is a flowchart of an application example of a project optimizing method for a medium-low voltage distribution network in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a preferred device for medium-low voltage distribution network project in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a project optimizing method and device for a medium-low voltage power distribution network, which solve the technical problem that the prior art lacks a scientific and effective project optimizing method, so that the development decision basis of the power distribution network is insufficient.
In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The first aspect of the application provides a project optimizing method for a medium-low voltage distribution network.
Referring to fig. 1, a flow chart of an embodiment of a method for optimizing a medium-low voltage distribution network project in an embodiment of the present application includes:
and step 101, acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage.
It will be appreciated that project planning information includes project name, project total investment, project attribute categories.
The medium-low voltage distribution network project in this embodiment is a medium-voltage distribution network project and a low-voltage distribution network project, that is to say, the method in this embodiment is suitable for the preference of the medium-voltage distribution network project, and is also suitable for the preference of the low-voltage distribution network project, and correspondingly, when the distribution network project is the medium-voltage distribution network project, the corresponding index data includes: the power supply rate and the feeder automation effective coverage rate can be changed. The index data corresponding to the low-voltage power distribution network project comprises: overload distribution ratio, pre-overload distribution ratio and low voltage common area ratio.
The calculation modes of the rotatable power supply rate and the effective coverage rate of feeder automation are respectively as follows:
rotatable power supply ratio=revolvable utility line number/medium voltage utility line number×100%.
Feeder automation effective coverage = number of medium voltage circuit/number of medium voltage utility circuit with feeder automation effective coverage x 100%.
The calculation modes of the overload distribution ratio, the pre-overload distribution ratio and the low voltage public station area ratio are respectively as follows:
overload distribution ratio = overload utility distribution number/utility distribution total number x 100%.
Pre-load ratio = number of utility changes over load and number of utility changes over load expected to be over loaded in one year x 100%.
The ratio of the voltage lower-voltage area=the number of the voltage lower-voltage public areas/the total number of public distribution transformer is multiplied by 100%.
The medium voltage distribution network project refers to a 20 kv or 10 kv project, and the low voltage distribution network project refers to a 0.4 kv project.
The current stage may be a current stage of a month at the current time, or a current stage of a year at the current time, which may be set as needed by a specific technology in the art, and is not specifically limited herein.
It should be noted that, in this embodiment, based on each power distribution network project, according to a mapping relationship between the power distribution network project and the reference score, the reference score corresponding to each power distribution network project is obtained, which specifically includes:
and acquiring the reference score of each power distribution network project according to the mapping relation between the project attribute category of each power distribution network project and the reference score based on the project attribute category of each power distribution network project.
It can be understood that the above-mentioned method for determining the reference score of each power distribution network project is merely illustrative, and in this embodiment, a mapping relationship between the project name and the reference score may be established according to the above-mentioned content, and then the reference score of each power distribution network project is determined based on the mapping relationship, and specific setting may refer to the description of the attribute category of the project and will not be repeated herein. The corresponding item attribute categories are classified into a (+) category, a first category, a second category, a third category, a fourth category and a fifth category according to the priority order of item implementation.
And step 103, obtaining the index benefit ratio of each power distribution network project according to the project planning information and the index data.
In this embodiment, according to project planning information and index data, an index benefit ratio of each power distribution network project is obtained, which specifically includes:
calculating the improvement degree of each power distribution network project on the index data by combining the index data value of each power distribution network project after implementation based on each project planning information and the index data;
according to the medium-low voltage index weight and each improvement degree, calculating the comprehensive contribution degree of each power distribution network project to the index data;
dividing the comprehensive contribution degree by the total investment of the project to obtain the index benefit ratio of each distribution network project.
It can be understood that, based on the index data of the medium voltage distribution network project, the calculation mode of the index data value after the implementation of the corresponding project is as follows:
based on the index data of the low-voltage power distribution network project, the calculation mode of the index data value after the implementation of the corresponding project is as follows:
degree of improvement x of index data by medium voltage distribution network project In (a) The method comprises the following steps:
wherein N is 1 And N 2 And respectively obtaining index data values before and after the implementation of the medium-voltage distribution network project.
Improvement degree x of index data by low-voltage distribution network project Low and low The method comprises the following steps:
wherein N1 'and N2' are index data values before and after implementation of the low-voltage distribution network project respectively.
Among the comprehensive contribution degree of the distribution network project to the index data, the comprehensive contribution degree y of the medium-voltage distribution network project to the index data In (a) The method comprises the following steps:
y in (a) ＝ω 1 x 1 +ω 2 x 2 ；
Wherein omega 1 、ω 2 Weights of the rotatable power supply rate and the effective coverage rate of feeder automation are respectively,
x 1 、x 2 effective coverage rate of medium-voltage distribution network project on rotatable power supply rate and feeder automationThe degree of improvement.
The comprehensive contribution degree y of the low-voltage distribution network project to the index data is as follows:
y low and low ＝ω 3 x 3 +ω 4 x 4 +ω 5 x 5
Wherein omega 3 、ω 4 、ω 5 The weights of the overload distribution ratio, the pre-overload distribution ratio and the low voltage transformer area ratio are respectively,
x 3 、x 4 、x 5 the improvement degree of the low-voltage distribution network project to the overload distribution ratio, the pre-overload distribution ratio and the voltage lower station area ratio is respectively.
The index benefit ratio of each power distribution network project is specifically calculated as follows:
wherein R is In (a) 、R Low and low Index benefit ratio of medium voltage distribution network project and low voltage distribution network project respectively, C In (a) 、C Low and low The total investment of medium voltage distribution network project and low voltage distribution network project respectively.
And 104, normalizing the index benefit ratio to obtain additional points of each power distribution network project.
The additional calculation of the distribution network project is as follows:
wherein R is I in (i) For index benefit ratio of medium voltage distribution network project i, R Middle max R is the maximum value of the project index benefit ratio of each medium-voltage distribution network Middle min The minimum value of the project index benefit ratio of each medium-voltage distribution network is calculated; r is R Low i The index benefit ratio of the project i of the low-voltage distribution network is R Low max Project index for each low-voltage distribution networkMaximum value of benefit ratio, R Low min And (5) the minimum value of the project index benefit ratio of each low-voltage distribution network.
And 105, calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores.
In the method for optimizing the medium-low voltage power distribution network project, project planning information of each power distribution network project and index data in a power distribution network at the current stage are obtained; based on each power distribution network project, acquiring a reference score corresponding to each power distribution network project according to the mapping relation between the power distribution network project and the reference score; obtaining index benefit ratio of each power distribution network project according to project planning information and index data; normalizing the benefit ratio of each index to obtain additional points of each power distribution network project; and calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores. In the method, the project of the power distribution network is selected based on the index data of the power distribution network, so that the scientificity and rationality of project investment decisions are enhanced, the power grid investment benefit is improved, and the technical problem that the prior art lacks a scientific and effective project optimization method, and the development decision basis of the power distribution network is insufficient is solved.
The foregoing is an embodiment of a method for optimizing a medium-low voltage power distribution network project, and the following is an application example of the method for optimizing a medium-low voltage power distribution network project.
Referring to fig. 2, a flowchart of an application example of a project optimizing method for a medium-low voltage power distribution network in an embodiment of the present application includes:
s1, based on the normalized power distribution network planning work, collecting information of low-voltage planning projects in the power distribution network and medium-low-voltage index data of the current (current stage) power distribution network.
Taking the local city office a as an example, there are 10 medium-voltage distribution network projects (hereinafter, abbreviated as medium-voltage projects) and 10 low-voltage distribution network projects (hereinafter, abbreviated as low-voltage projects), respectively, and the medium-voltage index data of the current year is: rotatable power supply rate (75%), feeder automation effective coverage (81.25%); the low-voltage index data of the current year are: the overload transformation ratio (1.0%), the pre-overload transformation ratio (0.2%), and the voltage lower station area ratio (3.8%), and specific information are shown in table 1 and table 2:
table 1 medium pressure planning project information and current situation index data
Table 2 low voltage planning project information and current situation index data
S2, determining the reference score of each medium-low voltage project according to the mapping relation between the project attribute category and the reference score. The reference scores of the medium-pressure item and the low-pressure item are shown in tables 3 and 4, respectively:
table 3 benchmark scores for medium-pressure items
| Sequence number | Medium-pressure project name | Item attribute category | Medium voltage project benchmark score |
| 1 | Medium voltage project 1 | Class II | 3 |
| 2 | Medium voltage project 2 | Class II | 3 |
| 3 | Medium voltage project 3 | Class I | 4 |
| 4 | Medium voltage item 4 | Class II | 3 |
| 5 | Medium voltage project 5 | Class I | 4 |
| 6 | Medium voltage item 6 | Class II | 3 |
| 7 | Medium voltage item 7 | Class II | 3 |
| 8 | Medium voltage item 8 | Three types | 2 |
| 9 | Medium voltage project 9 | Class II | 3 |
| 10 | Medium voltage project 10 | Three types | 2 |
TABLE 4 benchmark scores for Low pressure projects
And S3, based on the planning project information of the power distribution network and the medium-low voltage index data of the current power distribution network, combining the medium-low voltage index values after project implementation, and respectively calculating the improvement degree of the medium-low voltage index data of each medium-low voltage project and each low-voltage project.
Taking an item name 1 as an example, the medium-voltage item has the following rotatable power supply rate after the item is implemented:
the improvement degree of the rotatable power supply rate by the "project name 1" is 75.02-75=0.02.
The effective coverage rate of feeder automation after project implementation is as follows:
the improvement degree of the "project name 1" on the feeder automation effective coverage is 81.32-81.25=0.07.
The improvement degree of other medium-voltage projects on the index data can be obtained by the same method, and the improvement degree is specifically shown in table 5:
the degree of improvement of index data by the medium-pressure items in Table 5
Taking "project name 1" as an example, the rotatable power supply rate after project implementation is:
the improvement degree of the overload transformation ratio by the project name 1 is 1.04-1.033=0.007.
The pre-load transformation ratio after project implementation is as follows:
the improvement degree of the pre-load distribution ratio by the project name 1 is 0.
The pre-load transformation ratio after project implementation is as follows:
the improvement degree of the "item name 1" to the common area ratio with the lower voltage is 0.
The improvement degree of other low-voltage projects on the index data can be obtained by the same method, and the improvement degree is specifically shown in table 6:
TABLE 6 degree of improvement of index data by low-voltage items
And S4, respectively calculating the comprehensive contribution degree of the medium-voltage project and the low-voltage project to the index data according to the improvement degree of the project to the index and combining the weight of the medium-voltage index and the low-voltage index.
The medium-pressure project takes the project name 1 as an example, and the comprehensive contribution degree of the project name 1 to index data is
The comprehensive contribution degree of other medium-voltage projects to index data can be obtained by the same method, and the detailed description is shown in table 7:
comprehensive contribution of medium-pressure items to index data in Table 7
Taking "project name 1" as an example, the comprehensive contribution degree of the "project name 1" to index data is
The comprehensive contribution degree of other low-voltage projects to the index data can be obtained by the same method, and the detail is shown in a table 8.
Table 8 comprehensive contribution of low-pressure items to index data
S5, dividing the comprehensive contribution degree of the projects to the indexes by the total investment of the projects to obtain index benefit ratios of the projects, and carrying out normalization processing on the index benefit ratios of all the projects to obtain additional scores of each project.
Additional scores for medium voltage items are shown in table 9 and additional scores for low voltage items are shown in table 10.
Additional divisions of the pressure entries in Table 9
Table 10 additional points of low voltage items
And S6, adding the standard of each item with the additional score to obtain the comprehensive score of the item, and respectively determining the preferable sequence of the medium-voltage item and the low-voltage item according to the height of the comprehensive score of the item.
The base of table 3 is added to the additional score of table 9 to obtain a composite score for the medium voltage project, and the ranking is performed according to the composite score to obtain a priority ranking for the medium voltage project, as detailed in table 11.
Preferred ordering of the pressure items in Table 11
| Sequence number | Medium-pressure project name | Medium voltage project benchmark score | Additional sub-division of medium-voltage project | Medium voltage project comprehensive scoring |
| 1 | Medium voltage project 3 | 4 | 0.06 | 4.06 |
| 2 | Medium voltage project 5 | 4 | 0.04 | 4.04 |
| 3 | Medium voltage project 1 | 3 | 0.27 | 3.27 |
| 4 | Medium voltage project 9 | 3 | 0.27 | 3.27 |
| 5 | Medium voltage item 6 | 3 | 0.14 | 3.14 |
| 6 | Medium voltage item 4 | 3 | 0.07 | 3.07 |
| 7 | Medium voltage item 7 | 3 | 0.05 | 3.05 |
| 8 | Medium voltage project 2 | 3 | 0.00 | 3.00 |
| 9 | Medium voltage item 8 | 2 | 1.00 | 3.00 |
| 10 | Medium voltage project 10 | 2 | 0.15 | 2.15 |
The base of table 4 is added to the additional scores of table 10 to obtain a composite score for the low pressure items, and the low pressure items are ranked according to the composite score to obtain a prioritized ranking of the low pressure items, as detailed in table 12.
Table 12 preferred ordering of low voltage items
The application example provides a method for optimizing medium-low voltage projects based on index data of a power distribution network, which can be applied to investment planning and management work of a ground city power supply bureau, so that scientificity and rationality of project investment decisions are enhanced, and power grid investment benefits are improved.
The second aspect of the application provides a project optimizing device for a medium-low voltage distribution network.
Referring to fig. 3, in an embodiment of the present application, a schematic structural diagram of a preferred device for a medium-low voltage distribution network project includes:
a first obtaining unit 301, configured to obtain project planning information of each power distribution network project and index data in the current stage power distribution network;
the second obtaining unit 302 is configured to obtain, based on each power distribution network project, a reference score corresponding to each power distribution network project according to a mapping relationship between the power distribution network project and the reference score;
the first calculation unit 303 obtains the index benefit ratio of each power distribution network project according to the project planning information and the index data;
the second calculating unit 304 is configured to normalize each index benefit ratio to obtain additional points of each power distribution network project;
and a third calculation unit 305, configured to calculate a comprehensive score of each power distribution network project according to the reference score and the additional score of each power distribution network project, and determine an optimal power distribution network project list according to the comprehensive score.
Optionally, the first computing unit 303 specifically includes:
the first calculating subunit is used for calculating the improvement degree of each power distribution network project on the index data based on the planning information of each project and the index data and combining the index data value of each power distribution network project after implementation;
the second calculating subunit is used for calculating the comprehensive contribution degree of each power distribution network project to the index data according to the middle-low voltage index weight and each improvement degree;
and the third calculation subunit is used for dividing the comprehensive contribution degree by the total investment of the project to obtain the index benefit ratio of the project of each power distribution network.
Optionally, the second obtaining unit 302 is specifically configured to obtain, based on the project attribute category of each power distribution network project, a reference score of each power distribution network project according to a mapping relationship between the project attribute category of each power distribution network project and the reference score.
Optionally, the distribution network project includes: the index data corresponding to the medium-voltage distribution network project comprises: the power supply rate and the feeder automation effective coverage rate can be changed.
Optionally, the distribution network project includes: the index data corresponding to the low-voltage distribution network project comprises: overload distribution ratio, pre-overload distribution ratio and low voltage common area ratio.
In the embodiment, a project optimizing device for a medium-low voltage power distribution network firstly obtains project planning information of each power distribution network project and index data in a power distribution network at a current stage; based on each power distribution network project, acquiring a reference score corresponding to each power distribution network project according to the mapping relation between the power distribution network project and the reference score; obtaining index benefit ratio of each power distribution network project according to project planning information and index data; normalizing the benefit ratio of each index to obtain additional points of each power distribution network project; and calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores. In the method, the project of the power distribution network is selected based on the index data of the power distribution network, so that the scientificity and rationality of project investment decisions are enhanced, the power grid investment benefit is improved, and the technical problem that the prior art lacks a scientific and effective project optimization method, and the development decision basis of the power distribution network is insufficient is solved.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, e.g., the partitioning of units is merely a logical functional partitioning, and there may be additional ways in which the partitioning may be implemented, e.g., multiple units or components may be combined or integrated into another grid network to be installed, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected as needed to achieve the objectives of the embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, randomAccessMemory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. The project optimizing method for the medium-low voltage distribution network is characterized by comprising the following steps of:
acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage;
based on each power distribution network project, acquiring a reference score corresponding to each power distribution network project according to the mapping relation between the power distribution network project and the reference score;
obtaining the index benefit ratio of each power distribution network project according to the project planning information and the index data;
normalizing each index benefit ratio to obtain additional points of each power distribution network project;
calculating comprehensive scores of all the power distribution network projects according to the reference scores and the additional scores of all the power distribution network projects, and determining an optimal power distribution network project list according to the comprehensive scores;
according to the project planning information and the index data, obtaining the index benefit ratio of each power distribution network project specifically comprises the following steps:
calculating the improvement degree of each power distribution network project on the index data by combining the index data value of each power distribution network project after implementation based on the project planning information and the index data;
according to the medium-low voltage index weight and each improvement degree, calculating the comprehensive contribution degree of each power distribution network project to the index data;
dividing the comprehensive contribution degree by the total investment of the project to obtain the index benefit ratio of the project of the power distribution network;
the project planning information specifically comprises: project name, project total investment, and project attribute category;
the index data in the current-stage power distribution network comprises: index data of medium-voltage distribution network projects and index data of low-voltage distribution network;
the index data of the medium voltage distribution network project comprises: the current situation can be converted to the total number of the public lines, the number of newly increased rotatable power supply lines, the current situation total number of the public lines, the number of newly increased transformer substation outgoing lines, the current situation feeder automation effective coverage line number and the newly increased feeder automation effective coverage line number;
the index data of the low-voltage power distribution network project comprises: the current overload public distribution transformer number, the current overload solution public distribution transformer total number, the newly-added public distribution transformer number, the current pre-overload public distribution transformer number, the pre-overload solution distribution transformer number, the current voltage lower public distribution transformer area number and the solution voltage lower distribution transformer area number;
the improvement degrees include: the improvement degree of the index data by the medium-voltage distribution network project and the improvement degree of the index data by the low-voltage distribution network project;
the improvement degree x of the medium voltage distribution network project to the index data In (a) The method comprises the following steps:
wherein N is 1 And N 2 Index data values before and after implementation of the medium-voltage distribution network project are respectively obtained;
the improvement degree x of the low-voltage distribution network project to the index data Low and low The method comprises the following steps:
wherein N' 1 And N' 2 Index data values before and after implementation of the low-voltage power distribution network project are respectively obtained;
wherein, the comprehensive contribution degree y of medium-voltage distribution network project to index data In (a) The method comprises the following steps:
y in (a) ＝ω 1 x 1 +ω 2 x 2 ；
Wherein omega 1 、ω 2 Weights of the rotatable power supply rate and the effective coverage rate of feeder automation are respectively,
x 1 、x 2 the improvement degree of the effective coverage rate of the medium-voltage distribution network project on the rotatable power supply rate and the feeder automation is respectively obtained.
2. The medium-low voltage distribution network project optimizing method according to claim 1, wherein based on each distribution network project, obtaining a reference score corresponding to each distribution network project according to a mapping relation between the distribution network project and the reference score, specifically comprising:
and acquiring the reference score of each power distribution network project according to the mapping relation between the project attribute category of each power distribution network project and the reference score based on the project attribute category of each power distribution network project.
3. The method of claim 1, wherein the distribution network project comprises: the medium voltage distribution network project, the index data corresponding to the medium voltage distribution network project comprises: the power supply rate and the feeder automation effective coverage rate can be changed.
4. The method of claim 1, wherein the distribution network project comprises: the low-voltage distribution network project, the index data corresponding to the low-voltage distribution network project comprises: overload distribution ratio, pre-overload distribution ratio and low voltage common area ratio.
5. The utility model provides a medium-low voltage distribution network project preferred device which characterized in that includes:
the first acquisition unit is used for acquiring project planning information of each power distribution network project and index data in the power distribution network at the current stage;
the second acquisition unit is used for acquiring the reference points corresponding to the distribution network projects according to the mapping relation between the distribution network projects and the reference points based on the distribution network projects;
the first calculation unit is used for obtaining the index benefit ratio of each power distribution network project according to the project planning information and the index data;
the second calculation unit is used for carrying out normalization processing on each index benefit ratio to obtain additional points of each power distribution network project;
the third calculation unit is used for calculating the comprehensive score of each power distribution network project according to the reference score and the additional score of each power distribution network project, and determining an optimal power distribution network project list according to the comprehensive score;
the first computing unit specifically includes:
the first calculating subunit is used for calculating the improvement degree of each power distribution network project on the index data based on the project planning information and the index data and combining the index data value of each power distribution network project after implementation;
the second calculating subunit is used for calculating the comprehensive contribution degree of each power distribution network project to the index data according to the middle-low voltage index weight and each improvement degree;
the third calculation subunit is used for dividing the comprehensive contribution degree by the total investment of the project to obtain the index benefit ratio of the project of the power distribution network;
the project planning information specifically comprises: project name, project total investment, and project attribute category;
the index data in the current-stage power distribution network comprises: index data of medium-voltage distribution network projects and index data of low-voltage distribution network;
the index data of the medium voltage distribution network project comprises: the current situation can be converted to the total number of the public lines, the number of newly increased rotatable power supply lines, the current situation total number of the public lines, the number of newly increased transformer substation outgoing lines, the current situation feeder automation effective coverage line number and the newly increased feeder automation effective coverage line number;
the index data of the low-voltage power distribution network project comprises: the current overload public distribution transformer number, the current overload solution public distribution transformer total number, the newly-added public distribution transformer number, the current pre-overload public distribution transformer number, the pre-overload solution distribution transformer number, the current voltage lower public distribution transformer area number and the solution voltage lower distribution transformer area number;
the improvement degrees include: the improvement degree of the index data by the medium-voltage distribution network project and the improvement degree of the index data by the low-voltage distribution network project;
the medium voltage distribution network project pairDegree of improvement of index data x In (a) The method comprises the following steps:
wherein N is 1 And N 2 Index data values before and after implementation of the medium-voltage distribution network project are respectively obtained;
the improvement degree x of the low-voltage distribution network project to the index data Low and low The method comprises the following steps:
wherein N' 1 And N' 2 Index data values before and after implementation of the low-voltage power distribution network project are respectively obtained;
wherein, the comprehensive contribution degree y of medium-voltage distribution network project to index data In (a) The method comprises the following steps:
y in (a) ＝ω 1 x 1 +ω 2 x 2 ；
Wherein omega 1 、ω 2 Weights of the rotatable power supply rate and the effective coverage rate of feeder automation are respectively,
x 1 、x 2 the improvement degree of the effective coverage rate of the medium-voltage distribution network project on the rotatable power supply rate and the feeder automation is respectively obtained.
6. The medium-low voltage distribution network project preferentially selecting device according to claim 5, wherein the second obtaining unit is specifically configured to obtain, based on the project attribute category of each distribution network project, a reference score of each distribution network project according to a mapping relationship between the project attribute category of each distribution network project and the reference score.
7. The medium and low voltage distribution network project preferentially apparatus according to claim 5, wherein the distribution network project comprises: the medium voltage distribution network project, the index data corresponding to the medium voltage distribution network project comprises: the power supply rate and the feeder automation effective coverage rate can be changed.
8. The medium and low voltage distribution network project preferentially apparatus according to claim 5, wherein the distribution network project comprises: the low-voltage distribution network project, the index data corresponding to the low-voltage distribution network project comprises: overload distribution ratio, pre-overload distribution ratio and low voltage common area ratio.
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