CN110189033A - A kind of power distribution network As-Is Assessment and diagnostic method based on layering radar map method - Google Patents
A kind of power distribution network As-Is Assessment and diagnostic method based on layering radar map method Download PDFInfo
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Abstract
The invention discloses a kind of power distribution network As-Is Assessments and diagnostic method based on layering radar map method, comprising the following steps: obtains the historical data of power distribution network As-Is Assessment index；Comprehensive Fuzzy AHP and anti-entropy assessment obtain power distribution network diagnosis of the status quo index comprehensive weight, calculate the subjective and objective weight of classification layer；Radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, according to the radar area of pictural surface as power distribution network diagnosis of the status quo assessed value.The visualization for realizing power distribution network diagnosis and assessment according to the method for the present invention, to achieve the purpose that visual assessment and diagnosis.And then the power distribution network after being precisely is planned and is laid the groundwork, and provides a kind of quick, efficient method for power distribution network assessment and diagnostic work personnel.
Description
Technical field
The present invention relates to power distribution network As-Is Assessment technical field, especially a kind of power distribution network based on layering radar map method is existing
Shape assessment and diagnostic method.
Background technique
Reasonable accurately programme can effectively instruct policymaker to be directed to, and electrical network weak link progress is purposeful, has primary and secondary
Progress power distribution network upgrading and transformation, thus improve the power supply reliability of power distribution network, promoted power distribution network power supply capacity, reduce match
Power grid O&M cost and raising power supply quality.Before carrying out distribution network planning, needs to carry out power distribution network status assessment and examine
It is disconnected, its weak link is found out, accurately programme could be targetedly formulated.Traditional power distribution network assesses diagnostic work master
It is conceived to the assessment of reliability, safety, economy, harmony, power supply quality etc., but these diagnostic results do not have
Certain visualization.
Summary of the invention
The object of the present invention is to provide a kind of power distribution network As-Is Assessments and diagnostic method based on layering radar map method, so that
Power distribution network As-Is Assessment and diagnostic result have effect of visualization and energy visual Diagnosis goes out its weak link.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of power distribution network As-Is Assessment and diagnostic method based on layering radar map method, comprising the following steps:
Obtain the historical data of power distribution network As-Is Assessment index；
Comprehensive Fuzzy AHP and anti-entropy assessment obtain power distribution network diagnosis of the status quo index comprehensive weight, calculate classification
The subjective and objective weight of layer；
Radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, according to the radar area of pictural surface as power distribution network status
Diagnostic assessment value.
Further, before the historical data step for obtaining power distribution network As-Is Assessment index, further includes:
Power distribution network As-Is Assessment index is chosen, the power distribution network As-Is Assessment index includes power supply capacity index, power grid knot
Structure index, operational management index and equipment index.
Further, the historical data for obtaining power distribution network As-Is Assessment index, specifically includes:
Obtain power supply capacity index, electric network composition index, operational management index and equipment metric history annual data.
Further, after the historical data step for obtaining power distribution network As-Is Assessment index, further includes: index normalizing
Change processing step:
The number of samples of power distribution network diagnosis of the status quo assessment is q, and index number is m, if the collection of profit evaluation model and cost type index
It is combined into V1And V2, the Max-Min normalization result of j-th of index value of i-th of sample are as follows:
Wherein, xijAnd xij' be respectively Communalities before and after index value；It is attainable for index mapping normalization
Maximum value,Attainable minimum value is normalized for index mapping, under normal circumstances
Further, the comprehensive Fuzzy AHP and anti-entropy assessment, obtain power distribution network diagnosis of the status quo index comprehensive
Weight specifically includes:
Layering subjective weights are carried out to power distribution network diagnosis of the status quo index using Fuzzy AHP；
Objective Weight is carried out to power distribution network diagnosis of the status quo index using CRITIC method.
It is further, described that layering subjective weights are carried out to power distribution network diagnosis of the status quo index using Fuzzy AHP,
It specifically includes:
Utilize Triangular Fuzzy Number development of judgment matrix；
Utilize Triangular Fuzzy Number related algorithm parameter objective weight.
Further, described that Objective Weight is carried out to power distribution network diagnosis of the status quo index using CRITIC method, it specifically includes:
Input the achievement data of q sample of m index；
Calculate the entropy of jth item index；
Calculate the coefficient of variation of jth item index；
Solve objective weight.
Further, described that radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, according to the radar area of pictural surface
As power distribution network diagnosis of the status quo assessed value, specifically include:
Using the radar map center of circle as starting point, the radius OA of unit length is drawn straight up, and first power distribution network diagnosis is referred to
Target weight is converted to angle value, draws the radius OB of Article 2 unit length, similarly draws remaining power distribution network diagnosis index half
Diameter；
Using the center of circle as starting point, make the angular bisector of each fan-shaped region, using each normalization power distribution network diagnosis index value as
The length of angular bisector；
It is sequentially connected aforementioned peripheral point and forms radar map, examined using radar map polygon gross area S as power distribution network status
Disconnected assessed value obtains the radar map and power distribution network assessed value of classification layer.
The effect provided in summary of the invention is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution have the following advantages that or the utility model has the advantages that
The present invention proposes a kind of power distribution network As-Is Assessment and diagnostic method based on layering radar map method, and power distribution network status is commented
Estimate with diagnostic result have effect of visualization and can visual Diagnosis go out its weak link, realize power distribution network according to the method for the present invention
The visualization of diagnosis and assessment, to achieve the purpose that visual assessment and diagnosis.And then the power distribution network after being precisely is planned and is done
Place mat provides a kind of quick, efficient method for power distribution network assessment and diagnostic work personnel.
Detailed description of the invention
Fig. 1 is one method flow diagram of embodiment；
Fig. 2 is two method flow diagram of embodiment；
Fig. 3 is that power distribution network diagnosis and assessment radar map one are drawn in embodiment；
Fig. 4 is that power distribution network diagnosis and assessment radar map two are drawn in embodiment；
Fig. 5 is that power distribution network diagnosis and assessment radar map three are drawn in embodiment；
Fig. 6 is that power distribution network diagnosis and assessment radar map four are drawn in embodiment；
Fig. 7 is that power distribution network diagnosis and assessment radar map five are drawn in embodiment
Fig. 8 is that power distribution network diagnosis and assessment radar map six are drawn in embodiment.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used to realize different knots of the invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
Embodiment one
As shown in Figure 1, power distribution network As-Is Assessment and diagnostic method based on layering radar map method, comprising the following steps:
S1, the historical data for obtaining power distribution network As-Is Assessment index.
S2, comprehensive Fuzzy AHP and anti-entropy assessment, obtain power distribution network diagnosis of the status quo index comprehensive weight, calculate and divide
The subjective and objective weight of class layer.
S3, radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, according to the radar area of pictural surface as power distribution network
Diagnosis of the status quo assessed value.
Embodiment two
Such as Fig. 2 so, based on layering radar map method power distribution network As-Is Assessment and diagnostic method, comprising the following steps:
S1, power distribution network As-Is Assessment index is chosen.
It when carrying out diagnostic assessment to the status of power distribution network, needs to choose index as comprehensive as possible, so that building one complete
Face, reasonable index system.When constructing index system, then require on the one hand to ensure the comprehensive of index covering scope, to the greatest extent
It may completely reflect that power distribution network status is horizontal；On the other hand, need to include mesohigh distribution network level, it cannot be only comprising single
The power distribution network index of voltage class.Power distribution network As-Is Assessment index includes that power supply capacity index, electric network composition refer in the present embodiment
Mark, operational management index and equipment index, as shown in table 1.
Table 1
S2, the historical data for obtaining power distribution network As-Is Assessment index.
According to the coordinates collection of data related evaluation achievement data in power distribution network history year, data will reliably and really.This reality
It applies and obtains power supply capacity index in table 1, electric network composition index, operational management index and equipment metric history year in example
Data.
S3, index normalized step.
The number of samples of power distribution network diagnosis of the status quo assessment is q, and index number is m, if the collection of profit evaluation model and cost type index
It is combined into V1And V2, the Max-Min normalization result of j-th of index value of i-th of sample are as follows:
Wherein, xijAnd xij' be respectively Communalities before and after index value；It can reach for index mapping normalization
Maximum value,Attainable minimum value is normalized for index mapping, under normal circumstances
S4, comprehensive Fuzzy AHP and anti-entropy assessment, obtain power distribution network diagnosis of the status quo index comprehensive weight, calculate and divide
The subjective and objective weight of class layer.
In the present embodiment, layering subjective weights are carried out to power distribution network diagnosis of the status quo index using Fuzzy AHP, are had
Body includes: to utilize Triangular Fuzzy Number development of judgment matrix；Utilize Triangular Fuzzy Number related algorithm parameter objective weight.
Utilize Triangular Fuzzy Number development of judgment matrix, fuzzy judgment matrix A=(αij)n×nIn element αij=(lij,mij,
uij) it is one with mijFor the closed interval of intermediate value；
Each index comprehensive after calculating sifting synthesizes Triangular Fuzzy Number
Calculate Si≥SkA possibility that, if V (Si≥Sk) it is Si≥SkA possibility that, l, m, u indicate 3 Triangular Fuzzy Numbers
Parameter, then
Other
Find out SiA possibility that greater than other all index composite values, if V (Si≥Sk) it is Si≥SkA possibility that, l, m, u
Indicate the parameter of 3 Triangular Fuzzy Numbers, then
Other；
Normalization criteria weights vector is calculated, if w ' (αi)=V (Si), then weight vectors can be expressed as W '=(w '
(α1),w′(α2),...,w′(αn))T, criteria weights vector can be obtained after it is normalized
W=(w (α1),w(α2),...,w(αn))T。
Objective Weight is carried out to power distribution network diagnosis of the status quo index using CRITIC method in the present embodiment, is specifically included: input m
The achievement data of q sample of a index；Calculate the entropy of jth item index；Calculate the coefficient of variation of jth item index；It is objective to solve
Weight.
The entropy and entropy weight of each index after calculating sifting, for i-th of evaluation index, entropy is defined as:
In formula: working as fikWhen=0, it is believed that fiklnfik=0；
The entropy weight σ of i-th of evaluation indexiIs defined as:
In formula:
Kendall's correlations coefficient after calculating sifting between index defines the Ken Deer phase relation between index i and index j
Number are as follows:
In formula: A is constant, and value is q (q-1)/2；NcAnd NdRespectively indicate set XRVariable to element (XRi, XRj) in
The equal and unequal variable of two variables reordering values is to number；Indicate vector uiIn with identical variate-value number；
Indicate vector ujIn with identical variate-value number, define i-th index and every other index Kendall's correlations coefficient
γiAre as follows:
Comprehensive entropy and Kendall's correlations coefficient, the objective weight of index are determined using CRITIC method, then the visitor of i-th of index
Seeing weight indicates are as follows:
S5, radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, according to the radar area of pictural surface as power distribution network
Diagnosis of the status quo assessed value.
In one embodiment, using the radar map center of circle as starting point, the radius OA of unit length is drawn straight up, by first
The weight of power distribution network diagnosis index is converted to angle value, draws the radius OB of Article 2 unit length, similarly draws remaining distribution
Net diagnosis index radius；
Using the center of circle as starting point, make the angular bisector of each fan-shaped region, using each normalization power distribution network diagnosis index value as
The length of angular bisector；
It is sequentially connected aforementioned peripheral point and forms radar map, examined using radar map polygon gross area S as power distribution network status
Disconnected assessed value repeats preceding step, and the radar map and power distribution network assessed value of classification layer can be obtained.
According to the assessment result of power distribution network, corresponding power distribution network diagnosis is made, the weak link of status power grid is found out.
1. case study on implementation
When the present invention constructs index system, then require on the one hand to ensure the comprehensive of index covering scope, it is as complete as possible
Site preparation reflects that power distribution network status is horizontal；On the other hand, need to include mesohigh distribution network level, it cannot be only comprising univoltage etc.
The power distribution network index of grade.As shown in table 1.The index of correlation that the present invention chooses the area A does diagnosis and analysis and assessment, according to A
The power distribution network relevant historical annual data in area collects the historical data statistics such as table 2 that have obtained power distribution network diagnosis with assessment index of correlation
It is shown:
2 A local distribution network index of correlation data of table
Fuzzy AHP and anti-entropy assessment are integrated according to the present invention, obtain A local distribution network diagnosis of the status quo index
Comprehensive weight, and the subjective and objective weight of classification layer is calculated, as shown in table 3.
The diagnosis of 3 A local distribution network of table and evaluation index weight
According to the correlation step for drawing power distribution network diagnosis and assessment radar map, draws power distribution network diagnosis and assess radar map such as
Shown in Fig. 2-8.The area A is in equipment oldization situation and equipment heavy-overload ratio it can be seen from A district-level index radar map
Score is lower in two indexs, and excess-three item score is higher.In comparison, the area for equipping heavy-overload ratio is old greater than equipping
Change situation, therefore there are risk points with equipment oldization these two aspects in equipment heavy-overload ratio in the area A, are considering corresponding transformation
When, transformation equipment heavy-overload situation can be paid the utmost attention to.In two-level index electric network fault operation emergency response capabilities,
110kV route N-1 percent of pass is relatively low, and when planning and improvement can accordingly be transformed.Two-level index power supply reliability with
In platform area situation, each index scoring is higher, therefore in planning and improvement, it is lower that the content of this part can be placed on priority
Position.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of power distribution network As-Is Assessment and diagnostic method based on layering radar map method, characterized in that the following steps are included:
Obtain the historical data of power distribution network As-Is Assessment index；
Comprehensive Fuzzy AHP and anti-entropy assessment obtain power distribution network diagnosis of the status quo index comprehensive weight, calculate classification layer
Subjective and objective weight；
Radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, according to the radar area of pictural surface as power distribution network diagnosis of the status quo
Assessed value.
2. power distribution network As-Is Assessment and diagnostic method as described in claim 1 based on layering radar map method, characterized in that institute
Before the historical data step for stating acquisition power distribution network As-Is Assessment index, further includes:
Power distribution network As-Is Assessment index is chosen, the power distribution network As-Is Assessment index includes that power supply capacity index, electric network composition refer to
Mark, operational management index and equipment index.
3. power distribution network As-Is Assessment and diagnostic method as claimed in claim 2 based on layering radar map method, characterized in that institute
The historical data for obtaining power distribution network As-Is Assessment index is stated, is specifically included:
Obtain power supply capacity index, electric network composition index, operational management index and equipment metric history annual data.
4. power distribution network As-Is Assessment and diagnostic method as claimed in claim 3 based on layering radar map method, characterized in that institute
After the historical data step for stating acquisition power distribution network As-Is Assessment index, further includes: index normalized step:
The number of samples of power distribution network diagnosis of the status quo assessment is q, and index number is m, if profit evaluation model and the collection of cost type index are combined into V1
And V2, the Max-Min normalization result of j-th of index value of i-th of sample are as follows:
Wherein, xijAnd xij' be respectively Communalities before and after index value；Attainable maximum is normalized for index mapping
Value,Attainable minimum value is normalized for index mapping, under normal circumstances
5. power distribution network As-Is Assessment and diagnostic method as claimed in claim 4 based on layering radar map method, characterized in that institute
Comprehensive Fuzzy AHP and anti-entropy assessment are stated, power distribution network diagnosis of the status quo index comprehensive weight is obtained, specifically includes:
Layering subjective weights are carried out to power distribution network diagnosis of the status quo index using Fuzzy AHP；
Objective Weight is carried out to power distribution network diagnosis of the status quo index using CRITIC method.
6. power distribution network As-Is Assessment and diagnostic method as claimed in claim 5 based on layering radar map method, characterized in that institute
It states and layering subjective weights is carried out to power distribution network diagnosis of the status quo index using Fuzzy AHP, specifically include:
Utilize Triangular Fuzzy Number development of judgment matrix；
Utilize Triangular Fuzzy Number related algorithm parameter objective weight.
7. power distribution network As-Is Assessment and diagnostic method as claimed in claim 5 based on layering radar map method, characterized in that institute
It states and Objective Weight is carried out to power distribution network diagnosis of the status quo index using CRITIC method, specifically include:
Input the achievement data of q sample of m index；
Calculate the entropy of jth item index；
Calculate the coefficient of variation of jth item index；
Solve objective weight.
8. power distribution network As-Is Assessment and diagnostic method as described in claim 1 based on layering radar map method, characterized in that institute
It states and radar map is drawn according to power distribution network diagnosis of the status quo index comprehensive weight, commented according to the radar area of pictural surface as power distribution network diagnosis of the status quo
Valuation specifically includes:
Using the radar map center of circle as starting point, the radius OA of unit length is drawn straight up, by first power distribution network diagnosis index
Weight is converted to angle value, draws the radius OB of Article 2 unit length, similarly draws remaining power distribution network diagnosis index radius；
Using the center of circle as starting point, make the angular bisector of each fan-shaped region, is put down using each normalization power distribution network diagnosis index value as angle
The length of separated time；
It is sequentially connected aforementioned peripheral point and forms radar map, using radar map polygon gross area S as power distribution network diagnosis of the status quo
Assessed value obtains the radar map and power distribution network assessed value of classification layer.
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