CN103632203B - A kind of power distribution network division of the power supply area method based on overall merit - Google Patents
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Abstract
The present invention relates to the method for distribution system planning, and in particular to a kind of power distribution network division of the power supply area method based on overall merit.The method selectes the power supply area scope to be divided first, and the principal element on its present situation and influence division of the power supply area is analyzed, and sets up the assessment indicator system of division of the power supply area；Then the weight and standards of grading of evaluation index be set from suitable method；Overall merit is finally carried out, the division result of power supply area is determined.This method overcomes existing method only by expert or the shortcoming of leading experience qualitative classification, from the factor of influence power distribution network division of the power supply area, fully apply integrated evaluating method, overcome the defect that can only be powered region division in clustering methodology according to quantitative target, one can be done to power supply area comprehensively to evaluate, various regions can adjust the weight of each index with reference to own actual situation, and the accuracy of the method is greatly improved, with engineering application value very high.
Description
Technical field
The present invention relates to the method for distribution system planning, and in particular to a kind of power distribution network power supply area based on overall merit
Division methods.
Background technology
China is vast in territory, and powering area is vast, and various regions socio-economic development situation and electrical network feature difference are obvious.If pressing
According to a unified standard working-out power distribution network, then asset of equipments utilization rate can be caused not high or even serious waste situation, in skill
It is art, economically unreasonable.Therefore, for the otherness for embodying regional disparity and distribution network planning, build, power distribution network is realized
Lean is managed, and improves the efficiency and level of distribution network planning work, promotes China's distribution network planning to standardization, scientific hair
Exhibition, should all the time run through " differentiation planning " theory, in the case where considering that Regional Economic social development is presented non-equilibrium, knot
Each department power distribution network present situation and development trend are closed, the differentiation feature of different regions different stages of development is taken into account, to China's distribution
Net power supply area is divided, and is that the foundation of the distribution network planning and typical powering mode of differentiation lays the foundation.
(1) conventional integrated evaluating method
At present, conventional integrated evaluating method has comprehensive scoring method (Composite Grade Method), step analysis
Method (AHP), fuzzy comprehensive evaluation method, graphic-arts technique, multiple target, multi -index decision evaluation assessment, comprehensive appraisal expert system and intelligence
Evaluation system etc..
(2) comprehensive scoring method：
1. the characteristics of comprehensive scoring method：
Comprehensive scoring method have the advantages that it is more scientific, more quantify, be mainly manifested in：
(1) concept of weights is introduced, evaluation index result is more scientific；
(2) be conducive to playing the effect of evaluation index expert；
(3) devious conduct is effectively prevented.
Comprehensive scoring method there is also some shortcomings, mainly have：
(1) evaluation index factor and weights are difficult to reasonable definition.Evaluation index factor and weights determine to get up more complicated,
It is truly realized and scientific and reasonable is more difficult；
(2) evaluation index expert is not suitable with.Because panel member's category transfers property temporarily, them are allowed to fill in a short time
Divide and be familiar with being commented project data, it is comprehensively correct to grasp factor of evaluation and its weights, there is certain difficulty；
(3) the larger power of judging panel is imparted, because the professional skill of judging panel is not quite similar, if to judging panel without effective
Constraint, it is possible to there is " human feelings " relation.
2. the general step of comprehensive scoring method：
Comprehensive scoring method cannot carry out the occasion of quantitative analysis with unified dimension suitable for evaluation index, and use dimensionless
Fraction carry out overall merit.Comprehensive scoring method is that first each evaluation index is commented by the evaluation criterion of different indexs respectively
Point, then using weighting summation, try to achieve total score.
3. the comprehensive scoring method commonly used：
(1) addition point system
Be added each assessment item obatained score by addition for scoring Master, by total score number evaluate the excellent of different schemes
It is bad.Typically have even plus point system connects plus two kinds of point system with classification.
Assessment item is divided into grade sometimes according to importance, each grade gives standard scores, is then given by estimator
Each project marking of each scheme, then each scheme, each index obatained score is added, the total score according to obtained by each scheme
It is preferred that.
(2) even point system is multiplied
This method is that each evaluation index obatained score is even multiplied, and the size according to product is come the quality of evaluation of programme.
The characteristics of this method is that each scheme gained total score difference is larger, relatively more eye-catching because gross score is even to multiply gained.
(3) method of weighting scores
This method assumes that each evaluation index of each scheme has identical best result, and estimator is according to it to commenting
The judgement of valency index significance level, gives a weight coefficient respectively, is multiplied with the best result of the index, obtains dividing for the index
Number；Then the score of each index is added, that is, obtains the total score of scheme.Although this method is calculated slightly bothering, its result
It is relatively actual.The difference of method is determined according to weight coefficient, there are two kinds of specific algorithms.
The probability weight method of weight coefficient is determined according to comparative analysis.This method be according to the importance of evaluation index all
Regulation one best result and a corresponding flexible strategy, estimator can according to oneself view amendment (it is determined that) each evaluation index
Flexible strategy, are then respectively multiplied the flexible strategy of each scheme each index with the best result of each index, add up as each scheme
Gained total score, the scheme for scoring the most points as optimal case.
The method that weight coefficient is calculated according to emphasis index.When having in the evaluation index of scheme, an index is more important, its
His index has when having obvious incidence relation between its corresponding requirements, and each index again, and often evaluation of programme in this way is excellent
It is bad.
(3) index weights method to set up
Because the evaluation index quantity species that evaluation system is related to is various, and indices reflect evaluation object in difference
The performance of aspect, therefore effect played in assessment, suffered attention degree can not possibly be completely the same, it is therefore desirable to it is determined that every
The weight in assessment of index.The setting of evaluation index weight is the key content in comprehensive assessment work, is directly reflected
Evaluator determines that assessment result reflects the rationalization water of evaluation object combination property to the preference of evaluation index
It is flat.
Represented using normalized vector more than index weights, the weight sum of same layer index is 1.Index number is few
When, its weight is generally directly determined by expert；When index number is difficult to decision-making compared with multi-expert, the determination of its weight size is typically adopted
With methods such as analytic hierarchy process (AHP)s (AHP).
The advantage of AHP is to decompose complicated problem by setting up clearly hierarchical structure, with relative scale by the judgement of people
Scalarization, the comprehensive weight of scheme is drawn by solving judgment matrix, has the disadvantage to have ignored the ambiguity of artificial judgement, when not true
When the factors such as qualitative and ambiguity are more, AHP is vulnerable to the influence of marking person's subjective judgement.
The basic step of analytic hierarchy process (AHP) is as follows：
(1) clear and definite problem, the scope got to the heart of the problem, the factor that understanding problem is included determines the association between each factor
Relation and membership.
(2) evaluation model is set up.The final evaluation model includes destination layer, rule layer, indicator layer, solution layer.Each level
Should mutually disjoint, the factor of last layer plays dominating role to all or part of factor of adjacent next level, be formed from upper
Under successively dominance relation.When the factor that certain level is included is more, the level can be further divided into some subhierarchies.
The element that each element is arranged in usual each level is no more than 9.
(3) multilevel iudge matrix is constructed
Judgment matrix represented for last layer time index, the relative importance compared two-by-two between this level index, this
Relative importance numerical value is represented and just constitutes judgment matrix, and the relative importance numerical value for comparing two-by-two is general by nine grades of scaling laws,
Generally take 1~9 and its reciprocal (inverse represents that the importance being compared to each other has opposite similar meaning), it is each contained by each level
Factor can be compared to each other with a factor of last layer time as comparison criterion.
(4) Mode of Level Simple Sequence and its consistency check
This level index is calculated to the relative value of the importance degree of last layer time certain index (i.e. weight according to judgment matrix
Value) process, referred to as Mode of Level Simple Sequence.The method for using for ask the corresponding characteristic vector of judgment matrix eigenvalue of maximum and by its
Normalization, is specifically described to method for solving below.
For each multilevel iudge matrix A, a characteristic equation can be corresponded to：
AW=λ W (1)
After solution characteristic equation (1) obtains solution vector W and normalization, this vector is regarded as more than the secondary each factor of same layer
When one level factor is comparison criterion, the relative importance scale after being compared to each other.
(5) total hierarchial sorting and consistency check
Calculate all elements in same level and be referred to as level for the relative importance scale of top (general objective) and always arrange
Sequence.This process is successively carried out from highest level to lowest level.Finally, can obtain the importance power of each factor of evaluation
Weight.
(4) index standards of grading establishing method
1. Delphi (Delphi) method
Delphi method is a kind of method for being capable of fully general field expertise, experience and information, is beaten also known as expert
Point-score.The method is widely applied in network analysis and decision domain, is to take turns consultation methods a kind of multi-expert more.It is with anonymity
Mode repeatedly solicit expert opinion, and fed back with circulation by information communication, decision-making is reached unanimity, finally approach knot
Fruit is worth.Delphi methods have three below feature：
(1) anonymity：Information sheet is sent respectively to brainstrust, and the expert for participating in counseling services is mutually unaware of, and eliminates phase
Influence between mutually；
(2) situation feedback between taking turns：Landman makes statistics to the result of each round, and is issued often as feedback material
Position expert, refers to when seeking advice from and investigate for next round；
(3) statistical property of result：Result is processed using statistical method, realizes the quantitative place to expert opinion
Reason, this is an important feature of Delphi methods.
In the application process of Delphi, the invaluable experience and wisdom of expert have played important function, this for analysis and
Determining the input of Complex System Models has original advantage.When each factor is specifically processed, following two criterions are mainly followed：
1) expert opinion concentration degree E, according to the scoring a that formula (2) provides domain expertiWith adding for participation expert's number m
Weight average is calculated.
2) expert opinion dispersion δ, standard deviation is calculated according to formula (3).
Expert opinion concentration degree E reflects the degree of recognition of the expert to factor, and expert opinion dispersion then shows that expert exists
Degree of having different views in the factor problem.In the above-mentioned criterion of concrete application, according to the characteristics of particular problem, E is set0And δ0。
As the associated calculated values E of factor iiAnd δiThen remained when meeting formula (4) and formula (5), otherwise rejected.
Ei>E0 (4)
δi＜ δ0 (5)
Delphi methods are applied to all evaluation objects, and range of application runs through the links of overall merit, including evaluates
The links such as the screening of index, the foundation of index system, the determination of index weights, the formulation of evaluation criterion and overall merit all may be used
Solved with using Delphi.The advantage of Delphi methods is that expert is not influenceed by any extraneous factor, can fully be sent out
Wave its subjective initiative.On the basis of a large amount of extensive informations, the group wisdom of brainstrust can be concentrated, finally obtain and approach reality
Border, reasonably seek advice from result；The major defect of Delphi methods is that the time required for it may be very long, the manpower of consuming
Material resources are more；The determination that it is critical only that expert team member and scale of the method.
2. fuzzy synthetic appraisement method
Fuzzy overall evaluation be exactly based on fuzzy mathematics, using fuzzy relation synthesize principle, by some borders not
Clearly, quantitative factor quantification is difficult, grade situation carries out comprehensive eye exam one is subordinate to from Multiple factors to being evaluated things
The method of kind.Its " belonging to " nisi with subjection degree or " being not belonging to " describes intermediary's degree of difference, is with accurate
One kind description of the mathematical linguistics to ambiguity.The method that this qualitative index rationally quantifies, in preferably resolving Comprehensive Evaluation
The problems such as ambiguity of the uncertain or evaluation criteria of initial data.The basic of Model for Comprehensive is set up using blur method
Step can be expressed as：
1) determine judge object set of factors, factor refers to each attribute or performance of object, also referred to as parameter index or
Quality index, concentrated expression object quality；
2) set up and judge the set that collection, i.e. judge are constituted to the evaluation result that judge object may be made；
3) simple element evaluation and simple element evaluation fuzzy relation matrix are set up, and then calculates influence factor and tied to judging
The degree of membership of fruit；
4) agriculture products weight, and obtain comprehensive evaluation value.
Description of the part index number to problem has ambiguity in division of the power supply area comprehensive assessment index system, it is difficult to true
The quantitative relationship cut represents that this problem can well be solved by application fuzzy evaluation.By setting up membership function, can
Reflect that certain object has certain fuzzy quality or belongs to the degree of certain fuzzy concept using degree of membership, specific degree value is big
It is small to be degree of membership.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of power distribution network power supply area based on overall merit
Division methods, by the comprehensive scoring method in application comprehensive evaluation, consider not energetic index comprehensively, such as administrative level
Not, load character, load importance etc., one can be done to power supply area and are more comprehensively evaluated and rational division, solution
The attaching problem of division of the power supply area when two or more indexs in clustering methodology of having determined have contradiction, can provide unique
Division of the power supply area result.
The purpose of the present invention is realized using following technical proposals：
The present invention provides a kind of power distribution network division of the power supply area method based on overall merit, and it is theed improvement is that, institute
The method of stating comprises the steps：
(1) power distribution network division of the power supply area method and criteria for classifying present situation are analyzed；
(2) the power supply area scope for being divided is selected, the factor on its present situation and influence division of the power supply area is divided
Analysis；
(3) assessment indicator system of division of the power supply area is set up；
(4) weight to evaluation index is configured；
(5) standards of grading are set；
(6) overall merit is carried out to power supply area；
(7) type of power supply area is determined.
Further, in the step (2), the power supply area area is typically no less than 5km2It is (public according to national grid
Take charge of company standard Q/GDW 738-2012《Distribution network planning designing technique directive/guide》).
Further, in the step (3), according to the factor that division of the power supply area is influenceed in step (2), go into politics first
Control, economy and the aspect of load three set up the assessment indicator system of division of the power supply area, wherein：
Political index includes administrative grade；
Economic indicator includes year GDP per capita, year society's electricity consumption amount, year domestic load and per GDP power consumption per capita per capita；
Load index includes load density, load character and load priority.
Further, in the step (4), using AHP Decision Analysis, expert group Decision Method or questionnaire method etc.
Method is configured to the weight of evaluation index；When index weights are set, the weight sum of same layer index is 1.
Further, in the step (5), made using the power distribution network division of the power supply area result of cluster analysis first
The opinion rating of every evaluation index, and using Delphi method or fuzzy membership method make each evaluation index each
The standard or score range of opinion rating, the standards of grading use hundred-mark system, ten point system or the five-grade marking system.
The power distribution network division of the power supply area of cluster analysis comprises the steps：
A, analysis power distribution network division of the power supply area mode and criteria for classifying present situation；
B, the selected power supply area scope for dividing, the factor on its present situation and influence division of the power supply area are analyzed；
C, the assessment indicator system for setting up division of the power supply area；
The distribution situation of D, analysis each present situation index of power supply area and planning index；
E, achievement data is processed；
F, the data to each index carry out cluster analysis, check whether cluster analysis result meets normal distribution；
G, the criteria for classifying for setting up power supply area；
Determine the criteria for classifying of power supply area：
<1>It is A+ class power supply areas by the region division when the comprehensive grading of power supply area is more than 95 points；
<2>Comprehensive grading 90-95/when, by the region division be A class power supply areas；
<3>Comprehensive grading 85-90/when, by the region division be B+ class power supply areas；
<4>Comprehensive grading 80-85/when, by the region division be B class power supply areas；
<5>Comprehensive grading 70-80/when, by the region division be C+ class power supply areas；
<6>Comprehensive grading 60-70/when, by the region division be C class power supply areas；
<7>Comprehensive grading 50-60/when, by the region division be D+ class power supply areas；
<8>It is D class power supply areas by the region division when comprehensive grading is below 50 points；
Further, in the step (6), using integrated evaluating method (such as analytic hierarchy process (AHP), fuzzy comprehensive evaluation method,
Delphi method etc.) overall merit is carried out, wherein successively calculated upwards using analytic hierarchy process (AHP), until calculating power supply area
Comprehensive grading；Its expression formula is：
In formula：S(k+1)Represent certain attribute of+1 layer of kth A in hierarchical structure(k+1)Scoring；N represents attribute A(k+1)K stratons
Attribute number；Represent A(k+1)K straton attributes j scoring；Represent the weight of sub- attribute j.
Further, in the step (7), according to comprehensive evaluation result and standards of grading, the type of power supply area is determined.
The title and number of power supply area type can set as needed.
State Grid Corporation of China company standard Q/GDW 738-2012 has been brought into using the achievement in research that is formed of the present invention
《Distribution network planning designing technique directive/guide》In.
Compared with the prior art, the beneficial effect that reaches of the present invention is：
1. this method application integrated evaluating method, considers not energetic index comprehensively, such as administrative grade, overcomes
The defect of region division can only be powered in clustering methodology according to quantitative target, one can be done to power supply area more
Comprehensively evaluate, the accuracy of the method is greatly improved, with engineering application value very high.
2. this method considers the principal element of influence division of the power supply area, is established in terms of politics, economy, load three
The index system of division of the power supply area, various regions can adjust the weight of each index with reference to own actual situation, make power supply area
Divide more rationally, it is evidence-based.
3. this method makes the evaluation of every evaluation index using the power distribution network block supply division result of cluster analysis
Grade, significantly improves the practicality and accuracy of the method；
4. present method solves the ownership of division of the power supply area when two or more indexs have contradiction in clustering methodology
Problem, can provide unique division of the power supply area result.
5. this method has adaptability higher, is not only suitable for national grid company, provincial Utilities Electric Co., is also applied for
City-level electric company, can be that base is established in the formulation of the distribution network planning designing technique directive/guide and Its Relevant Technology Standards of differentiation
Plinth.
Brief description of the drawings
Fig. 1 is the power distribution network division of the power supply area flow chart based on comprehensive evaluation that the present invention is provided.
Specific embodiment
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
The power distribution network division of the power supply area flow chart based on comprehensive evaluation that the present invention is provided is as shown in figure 1, including under
State step：
(1) existing power distribution network division of the power supply area method and criteria for classifying present situation are investigated, what analysis presently, there are mainly asks
Topic；
(2) the power supply area scope to be divided is selected, on its present situation and the principal element of influence division of the power supply area
It is analyzed；
(3) principal element of comprehensive analyzing influence division of the power supply area, sets up power supply in terms of politics, economy and load 3
The assessment indicator system of region division；
(4) from suitable method (such as AHP Decision Analysis, expert group Decision Method and questionnaire method) to assessment
The weight of index is configured, and index weights reflect significance level between different layers index just；During setting, need
Consider the significance level of index, the size of probability of happening and mutually important sexual intercourse；
(5) formulated using a kind of cluster analysis (power distribution network division of the power supply area method based on cluster analysis) result first
Go out the opinion rating of every evaluation index, and it is every to make each evaluation index using Delphi method or fuzzy membership method
The standard or score range of individual opinion rating, the standards of grading use hundred-mark system, ten point system or the five-grade marking system；
The power distribution network division of the power supply area of cluster analysis comprises the steps：
A, analysis power distribution network division of the power supply area mode and criteria for classifying present situation；
B, the selected power supply area scope for dividing, the factor on its present situation and influence division of the power supply area are analyzed；
C, the assessment indicator system for setting up division of the power supply area；
The distribution situation of D, analysis each present situation index of power supply area and planning index；
E, achievement data is processed；
F, the data to each index carry out cluster analysis, check whether cluster analysis result meets normal distribution；
G, the criteria for classifying for setting up power supply area.
(6) overall merit is carried out using integrated evaluating method, such as is successively calculated upwards using analytic hierarchy process (AHP) (AHP),
Comprehensive grading until calculating power supply area.Its expression formula is：
In formula：S(k+1)Represent certain attribute of+1 layer of kth A in hierarchical structure(k+1)Scoring；N represents attribute A(k+1)K stratons
Attribute number；Represent A(k+1)K straton attributes j scoring；Represent the weight of sub- attribute j.
(7) type of the power supply area is determined according to comprehensive grading result and power supply area standards of grading.
Embodiment
With reference to specific embodiment, the present invention is described in further detail.
(1) power supply area As-Is analysis：
With Beijing as real case, using above-mentioned comprehensive scoring method to Beijing City, Chaoyang, Haidian, Yi Zhuang, Shijingshan and
6, Fengtai districts under city administration and Yanqing, Shunyi, Huairou, Changping, Fangshan, Mentougou, Miyun, Tongzhou, Daxing and 10, Pinggu are at county level
Service area is powered area type division, and the numerical value of each index refers to table 1.
1 2009 years each index values of Beijing power supply area of table
(2) selecting index and its weight are set：
The principal element of influence division of the power supply area is chosen, is mutually tied with expert group decision-making using AHP method of decision analysis
The method of conjunction determines the weight between same layer attribute, and is normalized, with the weight of quantificational description same layer index it
Be 1.Region division selecting index and weight set as shown in table 2.
The selecting index of table 2 and weight are set
(3) standards of grading are set：
The standards of grading of each index set and refer to table 3.Its middle aged GDP per capita, year, society's electricity consumption amount, year lived per capita per capita
4 indexs of power consumption and load density are provided with 8 grades of standards of grading, administrative grade and load importance according to cluster analysis result
2 setup measures, 3 grades of standards of grading；5 grades of standards of grading are provided with according to various regions per GDP power consumption present situation, load character sets
6 grades of standards of grading are put.
The standards of grading of each index of table 3 are set
Never ipsilateral reflects power supply area situation in a certain respect for single index scoring, but is not enough to explanation power supply
The integral status in region, it is therefore desirable to determine the comprehensive grading standard of power supply area：
<1>Can be A+ class power supply areas by the region division when the comprehensive grading of power supply area is more than 95 points；
<2>Comprehensive grading 90-95/when, can by the region division be A class power supply areas；
<3>Comprehensive grading 85-90/when, can by the region division be B+ class power supply areas；
<4>Comprehensive grading 80-85/when, can by the region division be B class power supply areas；
<5>Comprehensive grading 70-80/when, can by the region division be C+ class power supply areas；
<6>Comprehensive grading 60-70/when, can by the region division be C class power supply areas；
<7>Comprehensive grading 50-60/when, can by the region division be D+ class power supply areas；
<8>Can be D class power supply areas by the region division when comprehensive grading is below 50 points.
The comprehensive grading standard of the power supply area of table 4
| Power supply area type | Standards of grading |
| A+ | 95-100 |
| A | 90-95 |
| B+ | 85-90 |
| B | 80-85 |
| C+ | 70-80 |
| C | 60-70 |
| D+ | 50-60 |
| D- | <50 |
(4) comprehensive grading：
By application comprehensive scoring method to Beijing City, Chaoyang, Haidian, Yi Zhuang, Shijingshan and 6, Fengtai districts under city administration and
Yanqing, Shunyi, Huairou, Changping, Fangshan, Mentougou, Miyun, Tongzhou, Daxing and 10, Pinggu service area at county level carry out comprehensive commenting
Estimate, division of the power supply area result is as follows：
1) city belongs to A class power supply areas；
2) Chaoyang, Yi Zhuang and Haidian belong to B+ class power supply areas；
3) Shijingshan, Fengtai belong to B class power supply areas；
4) Shunyi, Tongzhou, Changping, Mentougou, Daxing, Fangshan, Huairou, Pinggu belong to C+ class power supply areas；
5) Miyun, Yanqing belong to C class power supply areas.
Beijing division of the power supply area result of table 5
(2) explanation of method and extension
At present in the document published, still rarely seen pair can power distribution network division of the power supply area method study, it is most of
Scholar is simply studied transformer station's division of the power supply area and optimal power radius.It is domestic right from the point of view of having studied
The method that power distribution network division of the power supply area there is no quantitative calculation and analysis, major part is expert or leader dividing by experience in quality
Class, it is difficult to judge division of the power supply area it is good with it is bad.The method that the present invention is provided is by the comprehensive grading in integrated evaluating method
Method, such as not energetic index of comprehensive consideration, administrative grade, load character, load importance, be able to can do to power supply area
One is more comprehensively evaluated；Various regions can adjust weight index with reference to own actual situation, make division of the power supply area result more
Adduction is managed.
Additionally, power supply area Type division result is closely related with power supply area range size to be divided, if power supply
Regional extent is excessive, and the type in some plot in region can be caused relatively low or higher, therefore power supply area range size should be closed
Reason.
This method overcomes existing method only by expert or the shortcoming of leading experience qualitative classification, is powered from influence power distribution network
The factor of region division is set out, fully the comprehensive scoring method in application integrated evaluating method, and not energetic finger is considered comprehensively
Mark, such as administrative grade overcomes the defect that can only be powered region division in clustering methodology according to quantitative target, can
One can be done to power supply area more comprehensively to evaluate, while various regions can adjust the power of each index with reference to own actual situation
Weight, is greatly improved the accuracy of the method, with engineering application value very high；This method has adaptability higher,
Different type, the division of different scales power supply area are applicable to, can be the distribution network planning designing technique directive/guide of differentiation
And the formulation of Its Relevant Technology Standards lays the foundation.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention rather than its limitations, to the greatest extent
Pipe has been described in detail with reference to above-described embodiment to the present invention, and those of ordinary skill in the art should be understood：Still
Specific embodiment of the invention can be modified or equivalent, and without departing from any of spirit and scope of the invention
Modification or equivalent, it all should cover in the middle of scope of the presently claimed invention.
Claims (1)
1. a kind of power distribution network division of the power supply area method based on overall merit, it is characterised in that methods described includes following steps
Suddenly：
(1) power distribution network division of the power supply area method and criteria for classifying present situation are analyzed；
(2) the power supply area scope for being divided is selected, the factor on its present situation and influence division of the power supply area is analyzed；
(3) assessment indicator system of division of the power supply area is set up；
(4) weight to evaluation index is configured；
(5) standards of grading are set；
(6) overall merit is carried out to power supply area；
(7) type of power supply area is determined；
In the step (2), the power supply area area is not less than 5km2；
In the step (3), according to the factor that division of the power supply area is influenceed in step (2), first from politics, economy and load three
Aspect sets up the assessment indicator system of division of the power supply area, wherein：
Political index includes administrative grade；
Economic indicator includes year GDP per capita, year society's electricity consumption amount, year domestic load and per GDP power consumption per capita per capita；
Load index includes load density, load character and load priority；
In the step (4), using AHP Decision Analysis, expert group Decision Method or questionnaire method to the power of evaluation index
It is configured again；When index weights are set, the weight sum of same layer index is 1；
In the step (5), every evaluation index is made using the power distribution network division of the power supply area result of cluster analysis first
Opinion rating, and the mark of each opinion rating of each evaluation index is made using Delphi method or fuzzy membership method
Accurate or score range, the standards of grading use hundred-mark system, ten point system or the five-grade marking system；
The power distribution network division of the power supply area of cluster analysis comprises the steps：
A, analysis power distribution network division of the power supply area mode and criteria for classifying present situation；
B, the selected power supply area scope for dividing, the factor on its present situation and influence division of the power supply area are analyzed；
C, the assessment indicator system for setting up division of the power supply area；
The distribution situation of D, analysis each present situation index of power supply area and planning index；
E, achievement data is processed；
F, the data to each index carry out cluster analysis, check whether cluster analysis result meets normal distribution；
G, the criteria for classifying for setting up power supply area；
Determine the criteria for classifying of power supply area：
<1>It is A+ class power supply areas by the region division when the comprehensive grading of power supply area is more than 95 points；
<2>Comprehensive grading 90-95/when, by the region division be A class power supply areas；
<3>Comprehensive grading 85-90/when, by the region division be B+ class power supply areas；
<4>Comprehensive grading 80-85/when, by the region division be B class power supply areas；
<5>Comprehensive grading 70-80/when, by the region division be C+ class power supply areas；
<6>Comprehensive grading 60-70/when, by the region division be C class power supply areas；
<7>Comprehensive grading 50-60/when, by the region division be D+ class power supply areas；
<8>It is D class power supply areas by the region division when comprehensive grading is below 50 points；
In the step (6), overall merit is carried out to power supply area using comprehensive evaluation, wherein using analytic hierarchy process (AHP) successively
Calculate upwards, the comprehensive grading until calculating power supply area；Its expression formula is：
In formula：S(k+1)Represent certain attribute of+1 layer of kth A in hierarchical structure(k+1)Scoring；N represents attribute A(k+1)K straton attributes
Number；Represent A(k+1)K straton attributes j scoring；Represent the weight of sub- attribute j；
In the step (7), according to comprehensive evaluation result and standards of grading, the type of power supply area is determined；Power supply area type
Title and number set according to actual conditions.
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