CN106127386A - A kind of power supply capacity based on data normalization harmony and harmonizing ways method - Google Patents

Abstract

The present invention relates to a kind of power supply capacity based on data normalization harmony and harmonizing ways method, comprise the steps: 1) calculate with layer same category of device power supply capacity nargin equilibrium degree；2) overall area is calculated with layer same category of device power supply capacity nargin equilibrium degree；3) each level equipment room power supply capacity nargin degrees of coordination is calculated；4) harmony with layer same category of device power supply capacity nargin Yu developmental stage is calculated；5) power distribution network power supply capacity nargin equilibrium degree and coordination degree evaluation and weak link analysis.The technical scheme that the present invention provides is by excessive or too small region, equipment level or the equipment of the power supply capacity nargin of further analyzing influence equilibrium degree and degrees of coordination, weak link can be positioned, have the proposition stressed to improve target and corresponding measure in planning construction and modification scheme.

Description

A kind of power supply capacity based on data normalization harmony and harmonizing ways method

Technical field

The present invention relates to the fields such as distribution network planning operation and assessment, be specifically related to a kind of power supply based on data normalization Ability harmony and harmonizing ways method.

Background technology

Power distribution network power supply capacity, with each equipment annual peak load for analyzing object, stresses ensureing power distribution network safe operation On the premise of, the ability analyzing the peak load that controller switching equipment can carry and the nargin left.Power distribution network power supply capacity assigns Electrical network is ensureing on the premise of safe operation, the ability of institute's energy bearing load.Power distribution network power supply capacity nargin reflection equipment also may be used The load accessed accounts for the ratio of total accessible load.

Power distribution network is made up of multi-layer device such as high-tension line, transformer station, medium-voltage line, distribution transformers, be one close not The entirety that can divide.On the one hand, between similar each equipment of power distribution network, the producing level of power supply capacity should equalize as far as possible, each equipment Between power supply capacity nargin too big difference should not occur, otherwise can limit the utilization of whole level equipment power supply capacity.The opposing party Face, answers cooperation between each level equipment in power distribution network runs, if the power supply capacity nargin of different level equipment presents Go out too big difference, will influence each other or keep in check, limit lifting and the utilization of power distribution network bulk supply ability.Meanwhile, power distribution network Whether each level equipment power supply capacity nargin coordinates also to be able to reflect to a certain extent the reasonable of equipment scale and lectotype selection Property.Additionally, in the different phase of power network development, power distribution network power supply capacity nargin is had different requirements and expected value, if In certain stage, power distribution network power supply capacity nargin is on the low side relative to this expected value or higher, then show that power grid asset could not reach by fully Utilization or the development to electrical network is following are unfavorable, it is therefore necessary to the harmony to electrical network power supply capacity nargin Yu power network development stage It is evaluated.The how harmony of objective evaluation power distribution network power supply capacity nargin, and carry on the whole by optimizing allocation of resources Rise distribution system operation benefits, be current power distribution network planning, run and manage the important topic faced.

Generally people's standard deviation or coefficient of standard deviation quantifies to react the dispersion degree of one group of data, standard deviation or standard Difference coefficient is the least, and dispersion degree is the least.The index characterizing dispersion degree can react the equilibrium of power supply capacity nargin to a certain extent Property and harmony.Owing to the power supply capacity nargin of equipment is likely to occur negative value, therefore the power supply capacity nargin meansigma methods of equipment may Null value or negative value occur, the coefficient of standard deviation of the power supply capacity nargin of equipment may be infinitely great or negative value.Habit according to people Used, user wish equilibrium degree or degrees of coordination desired value on the occasion of, and desired value is the highest characterizes harmonious or harmony degree more High.

Summary of the invention

For above deficiency of the prior art, the present invention changes based on the index of existing sign dispersion degree Enter, design new evaluation index, and propose the evaluation methodology of data normalization based on evaluation object, i.e. it is an object of the invention to There is provided a kind of power supply capacity based on data normalization harmonious and harmonizing ways method, equalized by further analyzing influence Region, equipment level or the equipment that degree is excessive or too small with the power supply capacity nargin of degrees of coordination, can position weak link, in planning Build and modification scheme has the proposition stressed to improve target and corresponding measure.

It is an object of the invention to use following technical proposals to realize:

The present invention provides a kind of power supply capacity based on data normalization harmonious and harmonizing ways method, and it improves it Place is, described method comprises the steps:

1) calculate with layer same category of device power supply capacity nargin equilibrium degree；

2) overall area is calculated with layer same category of device power supply capacity nargin equilibrium degree；

3) each level equipment room power supply capacity nargin degrees of coordination is calculated；

4) harmony with layer same category of device power supply capacity nargin Yu developmental stage is calculated；

5) power distribution network power supply capacity nargin equilibrium degree and coordination degree evaluation and weak link analysis.

Further, described step 1) in, before calculating with layer same category of device power supply capacity nargin equilibrium degree, to each The power supply capacity margin index of equipment carries out data normalization process, and computing formula is as follows:

${\mathrm{SCM}}_{ij}^{\′}=\frac{{\mathrm{SCM}}_{ij}-a_i}{b_i-a_i}---\left(1\right)$

In formula:

I the i-th kind equipment；

a_iThe power supply capacity margin theory minima of the i-th kind equipment；

b_iThe power supply capacity margin theory maximum of the i-th kind equipment；

J jth i kind equipment；

SCM_ijThe power supply capacity nargin of jth i kind equipment；

SCM′_ijAfter data normalization processes, the power supply capacity nargin of jth i kind equipment；

a_iAnd b_iCan power supply capacity coefficient by the maximum of various kinds of equipmentPeak load coefficientDetermine, whereinb_i=1；AndRelevant with device type and electric network composition；

With layer same category of device power supply capacity nargin equilibrium degree evaluation indexComputing formula is as follows:

$B_{{\mathrm{SCM}}_i}=\exp \{-\frac{\sqrt{\frac{\underset{j=1}{\overset{M_i}{\Σ}}{({\mathrm{SCM}}_{ij}^{\′}-\stackrel{\‾}{{\mathrm{SCM}}_i^{\′}})}^2}{M_i}}}{\stackrel{\‾}{{\mathrm{SCM}}_i^{\′}}}\}---\left(2\right)$

In formula:

I-th kind equipment power supply capacity nargin equilibrium degree；

M_iThe total quantity of the i-th kind equipment；

After data normalization processes, the meansigma methods of the power supply capacity nargin of the i-th kind equipment,

From computing formula, with the span of layer same category of device power supply capacity nargin equilibrium degree evaluation index be [0, 1], desired value is the biggest, shows that equilibrium degree is the highest.

Further, described step 2) in, when the overall area that the scope forming multiple sample areas is bigger carries out same When layer same category of device harmony is analyzed, use each sample area with the equilibrium degree of layer same category of deviceWeighted sum obtains overall area With layer same category of device power supply capacity nargin equilibrium degree, computing formula is as follows:

$B_{{\mathrm{SCM}}_i\_T}=\underset{k=1}{\overset{n}{\Σ}}{\mathrm{\ω}}_{i\_k}*B_{{\mathrm{SCM}}_i\_k}---\left(3\right)$

In formula:

Overall area is with layer same category of device power supply capacity nargin equilibrium degree；

Sample areas number in n overall area；

K kth sample areas；

ω_{i_k}Kth sample areas i kind equipment assets value accounts for what all sample areas i kind equipment total assets were worth Weight；

The i similar layer same category of device power supply capacity nargin equilibrium degree of kth sample areas；

From computing formula, overall area is with the span of layer same category of device power supply capacity nargin equilibrium degree evaluation index For [0,1], desired value is the biggest, shows that equilibrium degree is the highest.

Further, described step 3) in, before calculating each level equipment room power supply capacity nargin degrees of coordination, to each layer The power supply capacity margin index of level equipment carries out data normalization process, and computing formula is as follows:

${\mathrm{GSCM}}_i^{\′}=\frac{{\mathrm{GSCM}}_i-\underset{i=1,\mathrm{...},N}{\min }\left(a_i\right)}{\underset{i=1,\mathrm{...},N}{\max }\left(b_i\right)-\underset{i=1,\mathrm{...},N}{\min }\left(a_i\right)}---\left(4\right)$

In formula:

GSCM′_iAfter data normalization processes, the power supply capacity nargin of the i-th kind equipment；

GSCM_iThe power supply capacity nargin of the i-th kind equipment；

The classification sum of N equipment；

The minima of " the power supply capacity margin theory minima of N kind equipment "；

The maximum of " the power supply capacity margin theory maximum of N kind equipment "；

a_iThe power supply capacity margin theory minima of the i-th kind equipment；

b_iThe power supply capacity margin theory maximum of the i-th kind equipment；

For coordination degree in terms of power supply capacity nargin between reflection power distribution network each level equipment, each level equipment is proposed Between power supply capacity coordination degree evaluation index C_GSCM, computing formula is as follows:

$C_{GSCM}=\exp \{-\frac{\sqrt{\frac{\underset{i=1}{\overset{N}{\Σ}}{({\mathrm{GSCM}}_i^{\′}-\stackrel{\‾}{{\mathrm{GSCM}}^{\′}})}^2}{N}}}{\stackrel{\‾}{{\mathrm{GSCM}}^{\′}}}\}---\left(5\right)$

In formula:

After data normalization processes, the meansigma methods of N kind equipment power supply capacity nargin,

From computing formula, the span of each level equipment room power supply capacity coordination degree evaluation index is [0,1], refers to Scale value is the biggest, shows that degrees of coordination is the highest.

Further, described step 4) in, with the harmonizing ways of layer same category of device power supply capacity nargin Yu developmental stage IndexComputing formula is as follows:

$C_{{\mathrm{GSCM}}_i}\left(Stage\right)=\exp \{-\frac{|{\mathrm{GSCM}}_i-{\mathrm{GSCM}}_{iD}|}{{\mathrm{GSCM}}_{iD}}\}---\left(6\right)$

In formula:

GSCM_iThe power supply capacity nargin of the i-th kind equipment；

GSCM_iDI-th kind equipment power supply capacity nargin ideal value under corresponding developmental stage, Wherein, λ is the average annual load growth rate under the corresponding developmental stage of electrical network, and m is the load needing under the corresponding developmental stage of electrical network to meet Increase the time limit；

From computing formula, with the harmonizing ways desired value of layer same category of device power supply capacity nargin and developmental stage Span is [0,1], and desired value is the biggest, shows that degrees of coordination is the highest.

Further, described step 5) comprise the steps:

1. according to the result of calculation of each level equipment power supply capacity nargin harmonizing ways index, building of each layer equipment is analyzed If scale and the reasonability of type selecting, and find the excessive or too small equipment level of power supply capacity nargin and reason thereof；

2. according to the harmonizing ways index result of calculation with layer same category of device power supply capacity nargin Yu developmental stage, analyze Assessment area power distribution network and the adaptedness of developmental stage, and it is excessively advanced or lag behind developmental stage to analyze power supply capacity nargin Reason；

3. according to overall area with layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, overall area is analyzed Same layer same category of device between the balanced intensity of power supply capacity nargin, and find harmonious weaker region, carry out reason Analyze；

4. according to layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, analyze with layer same category of device Between the balanced intensity of power supply capacity nargin, and find the excessive or too small equipment of power supply capacity nargin and reason thereof；

5. according to the analysis result of above step, for the power supply capacity nargin harmony that affects already present in electrical network with equal The weak link of weighing apparatus property, proposes to improve target and measure in planning construction and modification scheme.

Compared with immediate prior art, the excellent effect that the technical scheme that the present invention provides has is:

(1) method that the present invention proposes can not only reflect that single sample areas power distribution network is with layer same category of device power supply capacity The harmonious level of nargin, the overall area power distribution network that also can form multiple sample areas is with layer same category of device power supply capacity nargin Equilibrium degree is estimated.

(2) the power supply capacity nargin that the present invention proposes and the harmonizing ways model of developmental stage, can reflect that each level sets Harmony between available power nargin and corresponding developmental stage power supply capacity nargin expectation, can be on the whole to power supply capacity The resonable degree of nargin is estimated.

(3) present invention propose by equipment power supply capacity nargin with power supply capacity nargin advanced person's professional etiquette of layer same category of device Generalized processes, then calculates equilibrium degree and the thinking of degrees of coordination and method, the scope of power supply capacity nargin can be mapped to [0, 1], thus the desired value of equilibrium degree or degrees of coordination being limited to [0,1], and desired value is the biggest, equilibrium degree or degrees of coordination are the highest.

(4) each level equipment power supply capacity nargin harmonizing ways model that the present invention proposes can reflect each level of power distribution network Equipment scale and the reasonability of lectotype selection, planning construction, method of operation arrangement for power distribution network propose effective instruction.

Accompanying drawing explanation

Fig. 1 is that the power distribution network power supply capacity that provides of the present invention is harmonious and the flow chart of harmonizing ways method.

Detailed description of the invention

Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.

The following description and drawings illustrate specific embodiments of the present invention fully, to enable those skilled in the art to Put into practice them.Other embodiments can include structure, logic, electric, process and other change.Embodiment Only represent possible change.Unless explicitly requested, otherwise individually assembly and function are optional, and the order operated is permissible Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This The scope of bright embodiment includes the gamut of claims, and all obtainable equivalent of claims Thing.In this article, these embodiments of the present invention can be represented by " inventing " individually or generally with term, and this is only For convenience, and if in fact disclose the invention more than, it is not meant to automatically limit this application in the range of appointing What single invention or inventive concept.

In order to reflect that power distribution network is with the balanced intensity of power supply capacity nargin between layer same category of device, power distribution network each level equipment room The harmony of power supply capacity nargin and resource distribution resonable degree, and power distribution network power supply capacity nargin and power network development stage Coordination degree, the present invention proposes a kind of power distribution network power supply capacity based on data normalization harmony and harmonizing ways method. Region, the equipment level excessive or too small by the power supply capacity nargin of further analyzing influence equilibrium degree and degrees of coordination or set Standby, weak link can be positioned, have the proposition stressed to improve target and corresponding measure in planning construction and modification scheme.

The power distribution network power supply capacity harmony of present invention offer and the flow chart of harmonizing ways method are as it is shown in figure 1, wrap Include following step:

(1) evaluate with layer same category of device power supply capacity nargin equilibrium degree

Owing to the value of equipment power supply capacity nargin is likely to occur negative value, calculating with layer same category of device power supply capacity nargin Before equilibrium degree, needing that the power supply capacity margin index of each equipment carries out standardizationization and process, concrete grammar is as follows:

${\mathrm{SCM}}_{ij}^{\′}=\frac{{\mathrm{SCM}}_{ij}-a_i}{b_i-a_i}---\left(1\right)$

In formula:

I the i-th kind equipment；

a_iThe power supply capacity margin theory minima of the i-th kind equipment；

b_iThe power supply capacity margin theory maximum of the i-th kind equipment；

J jth i kind equipment；

SCM_ijThe power supply capacity nargin of jth i kind equipment；

SCM′_ijAfter data normalization processes, the power supply capacity nargin of jth i kind equipment.

a_iAnd b_iCan power supply capacity coefficient by the maximum of various kinds of equipmentPeak load coefficientDetermine, whereinb_i=1.AndRelevant with device type and electric network composition.

With layer same category of device power supply capacity nargin equilibrium degree evaluation indexComputational methods are as follows:

$B_{{\mathrm{SCM}}_i}=\exp \{-\frac{\sqrt{\frac{\underset{j=1}{\overset{M_i}{\Σ}}{({\mathrm{SCM}}_{ij}^{\′}-\stackrel{\‾}{{\mathrm{SCM}}_i^{\′}})}^2}{M_i}}}{\stackrel{\‾}{{\mathrm{SCM}}_i^{\′}}}\}---\left(2\right)$

In formula:

I-th kind equipment power supply capacity nargin equilibrium degree；

M_iThe total quantity of the i-th kind equipment；

After data normalization processes, the meansigma methods of the power supply capacity nargin of the i-th kind equipment,

From computing formula, the span of this index is [0,1], and desired value is the biggest, shows that equilibrium degree is the highest.

(2) overall area is evaluated with layer same category of device power supply capacity nargin equilibrium degree

When the overall area that the scope forming multiple sample areas is bigger carries out the analysis of same layer same category of device harmony, Use each sample area with the equilibrium degree of layer same category of deviceWeighted sum obtains the equilibrium degree of overall area, and computational methods are as follows:

$B_{{\mathrm{SCM}}_i\_T}=\underset{k=1}{\overset{n}{\Σ}}{\mathrm{\ω}}_{i\_k}*B_{{\mathrm{SCM}}_i\_k}---\left(3\right)$

In formula:

Overall area is with layer same category of device power supply capacity nargin equilibrium degree；

Sample areas number in n overall area；

K kth sample areas；

ω_{i_k}Kth sample areas i kind equipment assets value accounts for what all sample areas i kind equipment total assets were worth Weight；

The i similar layer same category of device power supply capacity nargin equilibrium degree of kth sample areas.

From computing formula, the span of this index is [0,1], and desired value is the biggest, shows that equilibrium degree is the highest.

(3) each level equipment room power supply capacity nargin coordination degree evaluation

Before calculating each level equipment room power supply capacity nargin degrees of coordination, need abundant to the power supply capacity of each level equipment Degree index carries out standardizationization and processes, and concrete grammar is as follows:

${\mathrm{GSCM}}_i^{\′}=\frac{{\mathrm{GSCM}}_i-\underset{i=1,\mathrm{...},N}{\min }\left(a_i\right)}{\underset{i=1,\mathrm{...},N}{\max }\left(b_i\right)-\underset{i=1,\mathrm{...},N}{\min }\left(a_i\right)}---\left(4\right)$

In formula:

GSCM′_iAfter data normalization processes, the power supply capacity nargin of the i-th kind equipment；

GSCM_iIt is the power supply capacity nargin of the i-th kind equipment；

The classification sum of N equipment；

The minima of " the power supply capacity margin theory minima of N kind equipment "；

The maximum of " the power supply capacity margin theory maximum of N kind equipment ".

For coordination degree in terms of power supply capacity nargin between reflection power distribution network each level equipment, propose each layer equipment and supply Coordination degree evaluation index C of power nargin_GSCM, computational methods are as follows:

$C_{GSCM}=\exp \{-\frac{\sqrt{\frac{\underset{i=1}{\overset{N}{\Σ}}{({\mathrm{GSCM}}_i^{\′}-\stackrel{\‾}{{\mathrm{GSCM}}^{\′}})}^2}{N}}}{\stackrel{\‾}{{\mathrm{GSCM}}^{\′}}}\}---\left(5\right)$

In formula:

After data normalization processes, the meansigma methods of N kind equipment power supply capacity nargin,

From computing formula, the span of this index is [0,1], and desired value is the biggest, shows that degrees of coordination is the highest.

(4) with the coordination degree evaluation of layer same category of device power supply capacity nargin Yu developmental stage

Electrical network is at different developmental stage, the load growth level that need to meet and the device redundancy that need to reserve the most not With, therefore the demand of power supply capacity nargin is also differed, in order to reflect certain voltage level equipment power supply capacity nargin and electrical network The harmony of developmental stage, proposes the harmonizing ways index with layer same category of device power supply capacity nargin Yu developmental stageComputational methods are as follows:

$C_{{\mathrm{GSCM}}_i}\left(Stage\right)=\exp \{-\frac{|{\mathrm{GSCM}}_i-{\mathrm{GSCM}}_{iD}|}{{\mathrm{GSCM}}_{iD}}\}---\left(6\right)$

In formula:

GSCM_iThe power supply capacity nargin of the i-th kind equipment；

GSCM_iDI-th kind equipment power supply capacity nargin ideal value under corresponding developmental stage, Average annual load growth rate under wherein λ is the corresponding developmental stage of electrical network, m is to need the load met to increase under the corresponding developmental stage of electrical network The long time limit.

From computing formula, the span of this desired value is [0,1], and desired value is the biggest, shows that degrees of coordination is the highest.

(5) power distribution network power supply capacity nargin degrees of coordination and equilibrium degree evaluation and weak link analysis

1. according to the result of calculation of each level equipment power supply capacity nargin harmonizing ways index, building of each layer equipment is analyzed If scale and the reasonability of type selecting, and find the excessive or too small equipment level of power supply capacity nargin and related causes thereof.

2. according to the harmonizing ways index result of calculation with layer same category of device power supply capacity nargin Yu developmental stage, analyze Assessment area power distribution network and the adaptedness of developmental stage, and it is excessively advanced or lag behind developmental stage to analyze power supply capacity nargin Related causes.

3. according to overall area with layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, overall area is analyzed Same layer same category of device between the balanced intensity of power supply capacity nargin, and find harmonious weaker region, carry out reason Analyze.

4. according to layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, analyze with layer same category of device Between the balanced intensity of power supply capacity nargin, and find the excessive or too small equipment of power supply capacity nargin and related causes thereof.

5. according to the analysis result of above step, for the power supply capacity nargin harmony that affects already present in electrical network with equal The weak link of weighing apparatus property, can have the proposition stressed to improve target and corresponding measure in planning construction and modification scheme.

Embodiment

Specific embodiments of the present invention and step are as follows:

(1) calculate with layer same category of device power supply capacity nargin equilibrium degree:

1. power supply capacity nargin SCM of every equipment is calculated_ij, and according to formula (1), it is carried out linearly by standardization Conversion, makes the power supply capacity margin value of every equipment be mapped between [0,1], obtains every equipment after data normalization processes Power supply capacity nargin SCM '_ij；

During standardization processing, the maximum of four kind equipments related to can power supply capacity coefficientPeak load coefficientPower supply capacity margin theory minima a_iWith power supply capacity margin theory maximum b_iSelect according to following table parameter value Take.

Table 1 four kind equipment standardization processing related parameter choosing

2. according to formulaCalculate high-tension line, main transformer, medium-voltage line and distribution transforming equipment respectively The meansigma methods of power supply capacity nargin

3. according to formula (2), high-tension line, main transformer, medium-voltage line and distribution transforming each level equipment power supply capacity nargin are calculated Equilibrium degree

(2) overall area is calculated with layer same category of device power supply capacity nargin equilibrium degree:

1. each level equipment power supply capacity of each sample areas high-tension line, main transformer, medium-voltage line and distribution transforming is calculated abundant Degree equilibrium degreeCan be calculated by step (1)；

2. calculate each sample areas various kinds of equipment assets value and account for what this kind equipment total assets of all sample areas was worth Weights omega_{i_k}；

3. according to formula (3), overall area high-tension line, main transformer, medium-voltage line and distribution transforming each level equipment are calculated for electric energy Power nargin equilibrium degree.

(3) each level equipment room power supply capacity nargin degrees of coordination is calculated:

1. each level equipment power supply capacity nargin GSCM of high-tension line, main transformer, medium-voltage line and distribution transforming is calculated_i, and root According to formula (4), it is carried out linear transformation by standardization, make each level equipment power supply capacity margin value be mapped to [0,1] Between, obtain each level equipment power supply capacity nargin GSCM ' after data normalization processes_i；

2. according to formulaCalculate high-tension line, main transformer, medium-voltage line and distribution transforming four kind equipment to supply The meansigma methods of power nargin；

3. according to formula (5), each level equipment room power supply capacity nargin degrees of coordination is calculated.

(4) harmony with layer same category of device power supply capacity nargin Yu developmental stage is calculated:

1. each level equipment power supply capacity nargin GSCM of high-tension line, main transformer, medium-voltage line and distribution transforming is calculated_i；

2. the electrical network average annual load growth rate λ under corresponding developmental stage and the load growth time limit m that need to meet, root are set According to formulaCalculate high-tension line, main transformer, medium-voltage line and distribution transforming each level equipment in corresponding development Power supply capacity nargin ideal value under stage；

3. according to formula (6), the degrees of coordination of each level equipment power supply capacity nargin and developmental stage is calculated.

(5) power distribution network power supply capacity nargin degrees of coordination and equilibrium degree evaluation and weak link analysis:

1. according to the result of calculation of each level equipment power supply capacity nargin harmonizing ways index, building of each layer equipment is analyzed If scale and the reasonability of type selecting, and find the excessive or too small equipment level of power supply capacity nargin and related causes thereof.

2. according to the harmonizing ways index result of calculation with layer same category of device power supply capacity nargin Yu developmental stage, analyze Assessment area power distribution network and the adaptedness of developmental stage, and it is excessively advanced or lag behind developmental stage to analyze power supply capacity nargin Related causes.

3. according to overall area with layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, overall area is analyzed Same layer same category of device between the balanced intensity of power supply capacity nargin, and find harmonious weaker region, carry out reason Analyze.

4. according to layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, analyze with layer same category of device Between the balanced intensity of power supply capacity nargin, and find the excessive or too small equipment of power supply capacity nargin and related causes thereof.

5. according to the analysis result of above step, for the power supply capacity nargin harmony that affects already present in electrical network with equal The weak link of weighing apparatus property, can have the proposition stressed to improve target and corresponding measure in planning construction and modification scheme.

Above example is only in order to illustrate that technical scheme is not intended to limit, although with reference to above-described embodiment pair The present invention has been described in detail, and the detailed description of the invention of the present invention still can be entered by those of ordinary skill in the field Row amendment or equivalent, these are without departing from any amendment of spirit and scope of the invention or equivalent, all in application Within the claims of the present invention awaited the reply.

Claims (6)

1. power supply capacity based on a data normalization harmony and harmonizing ways method, it is characterised in that described method Comprise the steps:

1) calculate with layer same category of device power supply capacity nargin equilibrium degree；

2) overall area is calculated with layer same category of device power supply capacity nargin equilibrium degree；

3) each level equipment room power supply capacity nargin degrees of coordination is calculated；

4) harmony with layer same category of device power supply capacity nargin Yu developmental stage is calculated；

5) power distribution network power supply capacity nargin equilibrium degree and coordination degree evaluation and weak link analysis.

2. harmony as claimed in claim 1 and harmonizing ways method, it is characterised in that described step 1) in, calculating Before layer same category of device power supply capacity nargin equilibrium degree, the power supply capacity margin index of each equipment is carried out data normalization Change processes, and computing formula is as follows:

${\mathrm{SCM}}_{ij}^{\′}=\frac{{\mathrm{SCM}}_{ij}-a_i}{b_i-a_i}---\left(1\right)$

In formula:

I the i-th kind equipment；

a_iThe power supply capacity margin theory minima of the i-th kind equipment；

b_iThe power supply capacity margin theory maximum of the i-th kind equipment；

J jth i kind equipment；

SCM_ijThe power supply capacity nargin of jth i kind equipment；

SCM′_ijAfter data normalization processes, the power supply capacity nargin of jth i kind equipment；

a_iAnd b_iCan power supply capacity coefficient by the maximum of various kinds of equipmentPeak load coefficientDetermine, whereinb_i=1；AndRelevant with device type and electric network composition；

With layer same category of device power supply capacity nargin equilibrium degree evaluation indexComputing formula is as follows:

$B_{{\mathrm{SCM}}_i}=\exp \{-\frac{\sqrt{\frac{\underset{j=1}{\overset{M_i}{\Σ}}{({\mathrm{SCM}}_{ij}^{\′}-\stackrel{\‾}{{\mathrm{SCM}}_i^{\′}})}^2}{M_i}}}{\stackrel{\‾}{{\mathrm{SCM}}_i^{\′}}}\}---\left(2\right)$

In formula:

I-th kind equipment power supply capacity nargin equilibrium degree；

M_iThe total quantity of the i-th kind equipment；

After data normalization processes, the meansigma methods of the power supply capacity nargin of the i-th kind equipment,

From computing formula, the span with layer same category of device power supply capacity nargin equilibrium degree evaluation index is [0,1], refers to Scale value is the biggest, shows that equilibrium degree is the highest.

3. harmony as claimed in claim 1 and harmonizing ways method, it is characterised in that described step 2) in, when to many The bigger overall area of scope of individual sample areas composition carries out same layer same category of device harmony when analyzing, use each sample area with The equilibrium degree of layer same category of deviceWeighted sum obtains overall area with layer same category of device power supply capacity nargin equilibrium degree, calculating public affairs Formula is as follows:

$B_{{\mathrm{SCM}}_i\_T}=\underset{k=1}{\overset{n}{\Σ}}{\mathrm{\ω}}_{i\_k}*B_{{\mathrm{SCM}}_i\_k}---\left(3\right)$

In formula:

Overall area is with layer same category of device power supply capacity nargin equilibrium degree；

Sample areas number in n overall area；

K kth sample areas；

ω_{i_k}Kth sample areas i kind equipment assets value accounts for the power that all sample areas i kind equipment total assets are worth Weight；

The i similar layer same category of device power supply capacity nargin equilibrium degree of kth sample areas；

From computing formula, overall area with the span of layer same category of device power supply capacity nargin equilibrium degree evaluation index is [0,1], desired value is the biggest, shows that equilibrium degree is the highest.

4. harmony as claimed in claim 1 and harmonizing ways method, it is characterised in that described step 3) in, calculating Before each level equipment room power supply capacity nargin degrees of coordination, the power supply capacity margin index of each level equipment is carried out data standard Changeization processes, and computing formula is as follows:

${\mathrm{GSCM}}_i^{\′}=\frac{{\mathrm{GSCM}}_i-\underset{i=1,\mathrm{...},N}{\min }\left(a_i\right)}{\underset{i=1,\mathrm{...},N}{\max }\left(b_i\right)-\underset{i=1,\mathrm{...},N}{\min }\left(a_i\right)}---\left(4\right)$

In formula:

I the i-th kind equipment；

GSCM′_iAfter data normalization processes, the power supply capacity nargin of the i-th kind equipment；

GSCM_iThe power supply capacity nargin of the i-th kind equipment；

The classification sum of N equipment；

The minima of " the power supply capacity margin theory minima of N kind equipment "；

The maximum of " the power supply capacity margin theory maximum of N kind equipment "；

a_iThe power supply capacity margin theory minima of the i-th kind equipment；

b_iThe power supply capacity margin theory maximum of the i-th kind equipment；

For coordination degree in terms of power supply capacity nargin between reflection power distribution network each level equipment, propose each level equipment room and supply Power coordination degree evaluation index C_GSCM, computing formula is as follows:

$C_{GSCM}=\exp \{-\frac{\sqrt{\frac{\underset{i=1}{\overset{N}{\Σ}}{({\mathrm{GSCM}}_i^{\′}-\stackrel{\‾}{{\mathrm{GSCM}}^{\′}})}^2}{N}}}{\stackrel{\‾}{{\mathrm{GSCM}}^{\′}}}\}---\left(5\right)$

In formula:

After data normalization processes, the meansigma methods of N kind equipment power supply capacity nargin,

From computing formula, the span of each level equipment room power supply capacity coordination degree evaluation index is [0,1], desired value The biggest, show that degrees of coordination is the highest.

5. harmony as claimed in claim 1 and harmonizing ways method, it is characterised in that described step 4) in, same with layer Kind equipment power supply capacity nargin and the harmonizing ways index of developmental stage(Stage) computing formula is as follows:

$C_{{\mathrm{GSCM}}_i}\left(Stage\right)=\exp \{-\frac{|{\mathrm{GSCM}}_i-{\mathrm{GSCM}}_{iD}|}{{\mathrm{GSCM}}_{iD}}\}---\left(6\right)$

In formula:

GSCM_iThe power supply capacity nargin of the i-th kind equipment；

GSCM_iDI-th kind equipment power supply capacity nargin ideal value under corresponding developmental stage, Wherein, λ is the average annual load growth rate under the corresponding developmental stage of electrical network, and m is the load needing under the corresponding developmental stage of electrical network to meet Increase the time limit；

From computing formula, with the value of layer same category of device power supply capacity nargin Yu the harmonizing ways desired value of developmental stage Scope is [0,1], and desired value is the biggest, shows that degrees of coordination is the highest.

6. harmony as claimed in claim 1 and harmonizing ways method, it is characterised in that described step 5) include following step Rapid:

1. according to the result of calculation of each level equipment power supply capacity nargin harmonizing ways index, the construction rule of each layer equipment are analyzed Mould and the reasonability of type selecting, and find the excessive or too small equipment level of power supply capacity nargin and reason thereof；

2. according to the harmonizing ways index result of calculation with layer same category of device power supply capacity nargin Yu developmental stage, analysis and evaluation Regional distribution network and the adaptedness of developmental stage, and it is excessively advanced or lag behind the former of developmental stage to analyze power supply capacity nargin Cause；

3. according to overall area with layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, the same of overall area is analyzed The balanced intensity of power supply capacity nargin between layer same category of device, and find harmonious weaker region, carry out the analysis of causes；

4. basis is with layer same category of device power supply capacity nargin equilibrium degree evaluation index result of calculation, between analyzing with layer same category of device The balanced intensity of power supply capacity nargin, and find the excessive or too small equipment of power supply capacity nargin and reason thereof；

5. according to the analysis result of above step, for the power supply capacity nargin harmony that affects already present in electrical network with harmonious Weak link, in planning construction and modification scheme propose improve target and measure.