CN109146202A - A kind of standard configuration method of capacity of distribution transform per family based on power supply zone - Google Patents
A kind of standard configuration method of capacity of distribution transform per family based on power supply zone Download PDFInfo
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Abstract
The standard configuration method of capacity of distribution transform per family based on power supply zone that this application discloses a kind of, this method comprises: S1: classifying according to power supply zone to all residential areas to be configured；S2: typical residential area is screened in multiple power supply zones respectively；S3: the capacity of distribution transform per family of the typical residential area of any power supply zone in multiple power supply zones is calculated；S4: using the capacity of distribution transform per family of residential area typical in any power supply zone as standard, capacity configuration is carried out to the distribution transforming per family in any power supply zone.In this way, can farthest meet resident's power demands under comprehensive energy consumption expense minimum, and then effectively avoid the generation for occurring phenomena such as power supply capacity is insufficient or electric power resource wastes in town and country distribution construction.
Description
Technical field
This application involves distribution network planning technical fields, more particularly to a kind of capacity of distribution transform per family based on power supply zone
Standard configuration method.
Background technique
Distribution transformer capacity is the key index for embodying a regional distribution network infrastructure and power supply capacity per family, right
The research of capacity of distribution transform is the important content of regional distribution system planning per family, and capacity of distribution transform is directly related to this area's electricity per family
The reliability of power supply and the Economic Evaluation of transformation.Therefore, reasonable disposition is carried out to capacity of distribution transform per family, is that region change is matched
A major issue in power technology.
The method that capacity of distribution transform per family is configured at present, the usually unified design capacity according to each power supply zone into
Row configuration, it may be assumed that there is the design capacity estimated in early period to each power supply zone, then only using the design capacity estimated as standard,
The capacity of distribution transform of each power supply zone is allocated.
However, the method that capacity of distribution transform per family is configured at present, since configuration standard is reference only to design capacity, and
The practical electricity consumption situation of power supply zone is not analyzed, the underloading or heavy duty of power equipment are easy to cause in actual use, from
And lead to the situation for occurring electric power resource waste or power supply capacity deficiency in power distribution network, it is unfavorable for the reasonable employment of electric power resource.
Summary of the invention
The standard configuration method of capacity of distribution transform per family based on power supply zone that this application provides a kind of, to solve the prior art
The problem of middle electric power resource waste or power supply capacity deficiency.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
A kind of standard configuration method of capacity of distribution transform per family based on power supply zone, which comprises
S1: classifying to all residential areas to be configured according to power supply zone, the type of all residential areas
It include: A+ class, A class, B class, C class and D class；
S2: typical residential area is screened in multiple power supply zones respectively；
S3: the capacity of distribution transform per family of the typical residential area of any power supply zone in multiple power supply zones is calculated；
S4: using the capacity of distribution transform per family of residential area typical in any power supply zone as standard, to any confession
Distribution transforming per family in electric subregion carries out capacity configuration.
Optionally, step S2 includes:
S21: one or more representative regions in any power supply zone are obtained；
S22: the typical daily load characteristic curve of all residential areas in one or more of representative regions is obtained；
S23: adaptive fuzzy C means Method is utilized, to all residential areas in one or more of representative regions
Typical daily load characteristic curve clustered；
S24: according to cluster result, it is small that the typical resident in any power supply zone is filtered out using weighted center of gravity method
Area.
Optionally, step S24 includes:
S241: it according to the typical daily load characteristic curve of all residential areas in one or more of representative regions, obtains
Take the characteristic peak valley feature F of the typical daily load of any power supply zoneiWith charge level feature Qi；
S242: by the characteristic peak valley feature F of the typical daily load of any power supply zoneiWith charge level feature
QiPosition and center of gravity as cell i, utilize formulaThe center of gravity W of j class cell where calculating cell ij, wherein
Fi∈ i, CjFor j class cell number, the peak valley feature F of load curveiFor the percentage of unit hour electricity consumption, reflect that cell i is negative
The distribution of lotus period, is divided into 24 periods, remembers Fi={ F0, F1 ..., F23 }；Charge level feature QiFor user's daily power consumption；
S243: formula MIN f=is utilized | | Fi-Wj| |, the determining typical daily load characteristic nearest from cell center of gravity Wj is bent
Line；
S244: with residential area corresponding to the typical daily load characteristic curve nearest from cell center of gravity Wj, as described
Typical residential area in any power supply zone.
Optionally, step S3 includes:
S31: the prediction load total amount of typical residential area in any power supply zone is calculated, and to any power supply
Typical residential area in subregion carries out load prediction；
S32: the distribution transformer load rate of typical residential area in any power supply zone is determined using comprehensive energy consumption method；
S33: it according to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, determines
The capacity of distribution transform per family of typical residential area in any power supply zone.
Optionally, step S31 includes:
S311: the basic data of typical residential area in acquisition any power supply zone, the basic data includes: allusion quotation
The built time, amount, construction area and the historical load of type residential area；
S312: according to the amount and construction area of residential area typical in any power supply zone, Required coefficient is utilized
Method determines the distant view saturation loading of typical residential area in any power supply zone；
S313: according to the built time of residential area typical in any power supply zone, historical load, load growth rate
And distant view saturation loading, determine the developing stage of typical residential area in any power supply zone, the developing stage packet
It includes: during the early stage of development, high-speed development period or development saturation；
S314: when the developing stage of residential area typical in any power supply zone is the early stage of development, according to described
The basic data and distant view saturation loading of typical residential area in any power supply zone, simulate nearly mid-term using Logistic method and appoint
The load growth curve of typical residential area in one power supply zone.
Optionally, step S314 includes:
The load growth curve of typical residential area in any power supply zone is fitted using Logistic method, wherein
The curvilinear equation of Logistic method isK>0, a>0, b<0 and be constant, t is time, ytFor power load charge values.
Optionally, step S32 includes:
S321: the optimal economic Operational Zone of typical residential area multiple types distribution transforming in any power supply zone is determined
Between, the optimal economic traffic coverage are as follows: the distribution transforming traffic coverage under certain load, when distribution transforming coefficient of losses is minimum；
S322: in the optimal economic traffic coverage, formula is utilizedIt calculates separately
In any power supply zone in typical residential area different type distribution transforming comprehensive energy consumption expense, wherein TOC is the comprehensive of distribution transforming
Energy consumption cost is closed, CI is the initial cost of distribution transforming, and E is the mean hours electricity price of distribution transforming user, and n is that the economy of transformer uses year
Limit, i are year discount rate, and Kpv is the continuous n annual cost present value factor that discount rate is i, and Hpy is to charge hourage in distribution transforming year, and τ is
Year, hourage was lost in maximum load, and η is the initial load rate of distribution transforming；
S323: under same distribution transformer load rate, the comprehensive energy consumption expense of different type distribution transforming is compared, determines comprehensive energy consumption expense
With the smallest distribution transformer allocation plan, the distribution transformer allocation plan includes a variety of different types of distribution transformings；
S324: corresponding distribution transformer load rate when with comprehensive energy consumption expense minimum, as allusion quotation in any power supply zone
The distribution transformer load rate of type residential area.
Optionally, step S33 includes:
According to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, formula is utilizedCalculate the distribution transforming total capacity of typical residential area in any power supply zone, wherein S is that distribution transforming is always held
Amount, Ppre are the load total amount of prediction, and η is the load factor of transformer, and cos φ av is compensated average power factor；
It is occupied according to typical in the distribution transforming total capacity of residential area typical in any power supply zone and any power supply zone
The amount of people's cell, utilizes formulaThe distribution transforming per family of typical residential area in any power supply zone is calculated
Capacity, wherein Sav is that capacity of distribution transform, Nc are the number of users that distribution transforming is related to per family.
Optionally, step S33 includes:
According to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, formula is utilizedCalculate the capacity of distribution transform per family of typical residential area in any power supply zone, wherein cos φ i is i-th
The power factor of user.
Optionally, step S4 includes:
S41: using expert's Evaluation Method determine in any power supply zone the upper limit capacity nargin of capacity of distribution transform per family and
Lower limit capacity nargin；
S42: according to the maximum value of the capacity of distribution transform per family Savmax of residential area typical in any power supply zone and upper
It limits Capacity Margin and calculates the maximum of the capacity of distribution transform per family in any power supply zone using formula S 1=(1+A1) * Savmax
Value, wherein S1 is the maximum value of the capacity of distribution transform per family of any power supply zone, and Savmax is in any power supply zone
The maximum value of the capacity of distribution transform per family of typical residential area；
S43: according to the minimum value of the capacity of distribution transform per family Savmin of residential area typical in any power supply zone under
Capacity Margin A2 is limited, using formula S 2=(1-A2) * Savmin, calculates the capacity of distribution transform per family in any power supply zone
Minimum value S2, wherein S2 is the minimum value of the capacity of distribution transform per family of any power supply zone, and Savmin is any power supply
The minimum value of the capacity of distribution transform per family of typical residential area in subregion.
The technical solution that embodiments herein provides can include the following benefits:
The application provides a kind of standard configuration method of capacity of distribution transform per family based on power supply zone, and this method is first, in accordance with confession
Electric subregion classifies to all residential areas to be configured；Secondly it is small that typical resident is screened in multiple power supply zones respectively
Area；Then the capacity of distribution transform per family of the typical residential area of any power supply zone in multiple power supply zones is calculated；Finally with any
The capacity of distribution transform per family of typical residential area is standard in power supply zone, carries out capacity to the distribution transforming per family in any power supply zone
Distribution.By classifying to residential area, for the residential area of different power supply zones, the pre- of typical residential area is first determined
Load total amount and distribution transformer load rate are surveyed, so that the capacity of distribution transform per family of typical residential area is calculated, then with typical resident
The capacity of distribution transform per family of cell is standard, and residential areas all in any power supply zone are carried out with the configuration of capacity of distribution transform per family.
Due to considering that comprehensive energy consumption expense is minimum in the calculating process of capacity of distribution transform per family of typical residential area, as mark
The configuration of capacity of distribution transform per family of all residential areas can also reach comprehensive energy consumption expense minimum in quasi- any power supply zone, thus
Resident's power demands can farthest be met, and then effectively avoid town and country under comprehensive energy consumption expense minimum
Occurs generation phenomena such as power supply capacity is insufficient or electric power resource wastes in distribution construction.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The application can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of standard configuration method of capacity of distribution transform per family based on power supply zone provided by the embodiment of the present application
Flow diagram；
Fig. 2 is residential area load progress curve schematic diagram in the embodiment of the present application；
Fig. 3 is residential area load annual growth curve synoptic diagram in the embodiment of the present application；
Fig. 4 is the TOC figure of each scheme under different distribution transformer load rates in the embodiment of the present application.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The application protection all should belong in technical staff's every other embodiment obtained without making creative work
Range.
The application in order to better understand explains in detail presently filed embodiment with reference to the accompanying drawing.
Referring to Fig. 1, Fig. 1 matches for a kind of standard of capacity of distribution transform per family based on power supply zone provided by the embodiment of the present application
Set the flow diagram of method.As shown in Figure 1, the standard configuration method of capacity of distribution transform per family in the present embodiment based on power supply zone
Mainly include the following steps:
S1: classify according to power supply zone to all residential areas to be configured.
It is usually five classes: A+ class, A class, B class, C class and D class by division of the power supply area in Electric Power Network Planning.Wherein, A+,
A, B, C class are town region, and D class is country house.Classify according to power supply zone to all residential areas in the present embodiment,
Residential area is divided into A+ class, A class, B class, C class and D class totally five class, it is such which power supply zone residential area, which is located at,
The classification of power supply zone.
S2: typical residential area is screened in multiple power supply zones respectively.
The typical residential area in each power supply zone is filtered out, respectively in multiple power supply zones convenient for allusion quotation is calculated
It is subsequent using the capacity of distribution transform per family of typical residential area as standard after the capacity of distribution transform per family of type residential area, it supplies current
All residential areas in electric subregion carry out the configuration of capacity of distribution transform per family.
Specifically, step S2 is comprised the following processes:
S21: one or more representative regions in any power supply zone are obtained.
Representative region in any power supply zone can choose one or more, according to the characteristics of power supply zone and practical feelings
Condition selection.
S22: the typical daily load of all residential areas in one or more representative regions in any power supply zone is obtained
Characteristic curve.
Typical daily load characteristic curve is able to reflect the load variations trend and part throttle characteristics of residential area, passes through typical day
Load characteristic curve it is available to the peak load of current residential area, per day load, day peak-valley difference daily load rate, day most
Smaller load rate and day peak-valley ratio.
S23: adaptive fuzzy C means Method is utilized, in one or more representative regions in any power supply zone
The typical daily load characteristic curve of all residential areas is clustered.
Specifically, step S23 is comprised the following processes:
S231: the typical daily load of all residential areas in one or more representative regions in any power supply zone is special
Linearity curve is numbered；
S232: the original power data acquisition system X={ x of n residential area in any power supply zone is established1..., xn}T, x1,
x2..., xnThe vector being made of s data；
S233: being standardized original power data acquisition system, obtains standardization sample X '={ x1', x2' ...,
xn', and in standardization sample any residential area power data are as follows:
Wherein: ximaxFor the maximum value of i-th of cell realtime power of raw data matrix；
ximinFor the minimum value of i-th of cell realtime power of raw data matrix；
S234: FUZZY WEIGHTED index, iteration standard, cluster numbers and the initialization of adaptive fuzzy C mean cluster are defined
Cluster matrix.
The FUZZY WEIGHTED index of adaptive fuzzy C mean cluster, that is, smoothing factor m, usual m value are 2；Iteration criterion epsilon,
Stopping criterion for iteration ε=0.00001；The Validity Function L (1)=0 of cluster numbers 1；Cluster numbers c=2；Definition initialization cluster square
Battle array V (0).
S235: formula is utilizedFuzzy matrix U is calculated, and utilizes formulaIt updates
Cluster centre V.
Make if there is j, rThen enable:And as i ≠ r,
Wherein: drj=| | vi-xj| | the Euclidean distance between ith cluster center and j-th of vector, xjIndicate jth
A typical case's daily load characteristic curve vector.
S236: ‖ v (k+1)-v (k) ‖ is calculated.
If ‖ v (k+1)-v (k) ‖ < ε, stops iteration, K=K+1, return step S235 are otherwise set.
S237: formula is utilizedCalculate the Validity Function L (c) of cluster numbers C.
The value of the Validity Function L (c) of cluster numbers C is bigger, illustrates that classification is more reasonable, if L (c-1) > L (c-2) and L
(c-1) > L (c), then cluster process terminates, and otherwise sets c=c+l, return step S235.Wherein: L1, which is described in same class, to be owned
Load curve Xi is at a distance from such cluster centre Vi, and value is smaller to illustrate that classification is more reasonable, which is inverse indicators；L2 description
All cluster centres mutual distances and, value is bigger to illustrate that classification is more reasonable, which is direct index；L3 is described
The average value of the maximum membership degree of every curve in the subordinated-degree matrix generated is clustered, the bigger illustrative graph of value is to this kind of bent
The bigger index of the degree of membership of line is direct index；Umax, k represent maximum of the kth load curve in subordinated-degree matrix and are subordinate to
Degree.
S24: according to cluster result, the typical residential area in any power supply zone is filtered out using weighted center of gravity method.
Specifically, step S24 is comprised the following processes:
S241: it is tied according to the characteristic cluster of the typical daily load of all residential areas in one or more representative regions
Fruit obtains the characteristic peak valley feature F of typical daily load of any power supply zoneiWith charge level feature Qi。
S242: by the characteristic peak valley feature F of the typical daily load of any power supply zoneiWith charge level feature QiMake
Position and center of gravity for cell i, utilize formulaThe center of gravity W of j class cell where calculating cell ij, wherein Fi∈
I, CjFor j class cell number, the peak valley feature F of load curveiFor the percentage of unit hour electricity consumption, when reflecting cell i load
Section distribution, is divided into 24 periods, remembers Fi={ F0, F1 ..., F23 }；Charge level feature QiFor user's daily power consumption.
S243: formula MIN f=is utilized | | Fi-Wj| |, the determining typical daily load characteristic nearest from cell center of gravity Wj is bent
Line.
S244: with residential area corresponding to the typical daily load characteristic curve nearest from cell center of gravity Wj, as any
Typical residential area in power supply zone.
With continued reference to Fig. 1 it is found that after getting typical residential area, step S3 is executed: calculating in multiple power supply zones and appoint
The capacity of distribution transform per family of the typical residential area of one power supply zone.
Specifically, step S3 is comprised the following processes:
S31: the prediction load total amount of typical residential area in any power supply zone is calculated, and in any power supply zone
Typical residential area carries out load prediction.
Step S31 is comprised the following processes:
S311: the basic data of typical residential area in any power supply zone is acquired, basic data includes: that typical resident is small
The built time, amount, construction area and the historical load in area.
S312: true using demand coefficient method according to the amount and construction area of residential area typical in any power supply zone
The distant view saturation loading of typical residential area in fixed any power supply zone.
The present embodiment medium long shot saturation loading predicts load total amount.In the present embodiment, formula P is utilizedpre=KxPtotMeter
Prediction load total amount is calculated, Ppre is prediction load total amount in formula, and Kx is Required coefficient, and Ptot is that planning region electrical equipment is always held
Amount.Wherein, Required coefficient Kx indicate private residence of different nature to the needs of electric appliance load and while a coefficient using, need
The factors such as coefficient and the job specification of electrical equipment, service efficiency, quantity are related, in general, when the number of devices in electrical equipment group
When measuring more, Required coefficient should take smaller value, on the contrary then should take the larger value, when capacity utilization is higher, Required coefficient should take compared with
Big value, it is on the contrary then smaller value should be taken.
The calculation formula of Required coefficient Kx in the present embodiment are as follows:In formula: P cell refers to and resident to be configured
The typical Daily treatment cost of the similar saturation cell of cell, N are saturation neighbours living number, and Pi is saturation the i-th family of cell resident
Each electrical equipment maximum capacity.
Planning region electrical equipment total capacity Ptot is calculated using load density method in the present embodiment, its calculation formula is:
Ptot=NresSavPn, in formula: Nres is number of users, and Sav is that construction area, Pn are residential electricity consumption index per family.
S313: according to the built time of residential area typical in any power supply zone, historical load, load growth rate and
Distant view saturation loading, determines in any power supply zone the developing stage of typical residential area, developing stage include: the early stage of development,
During high-speed development period or development saturation.
Referring to fig. 2, difference develops rank to the residential area load progress curve schematic diagram of different stages of development in the present embodiment
The residential area load annual growth curve synoptic diagram of section is referring to Fig. 3.
S314: when the developing stage of residential area typical in any power supply zone is the early stage of development, according to any power supply
The basic data and distant view saturation loading of typical residential area in subregion determine the nearly any power supply point of mid-term using Logistic method
The load growth curve of typical residential area in area.
Specifically, the load growth curve of typical residential area in any power supply zone is fitted using Logistic method,
In, the curvilinear equation of Logistic method are as follows:K>0, a>0, b<0 and be constant, t is time, ytFor electric load
Value.K, a, b are unknown numbers in the present embodiment, it is known that cell history load, the time of historical load, saturation loading and saturation
The time of load can find out the value of these constants of K, a, b and e using curvilinear equation.
It is available to typical resident according to the load growth curve of residential area typical in any power supply zone of nearly mid-term
Then the nearly term Load of cell implements distribution transforming transition scheme according to nearly term Load.Such as: two distribution transformings are built if necessary,
Can first be put into operation a distribution transforming, to the regular period after put into operation again another, according to nearly term Load realize distribution transforming transition scheme
Loss can be reduced, is conducive to energy saving.
When the developing stage of residential area typical in any power supply zone is not the early stage of development, it may be assumed that developing stage is high speed
When developing the futures development period of saturation, its distant view saturation loading need to be only determined, it is not necessary to execute step S314, it may be assumed that need not calculate
The load growth curve of its nearly mid-term.
S32: the distribution transformer load rate of typical residential area in any power supply zone is determined using comprehensive energy consumption method.
Step S32 is comprised the following processes:
S321: the optimal economic traffic coverage of typical residential area multiple types distribution transforming in any power supply zone is determined, most
Good optimized operation zone are as follows: the distribution transforming traffic coverage under certain load, when distribution transforming coefficient of losses is minimum.
The optimized operation zone for studying distribution transforming transformer, mainly obtains the distribution transforming of different model in any power supply zone
Optimal economic traffic coverage, in general, distribution transformer load rate is all lower under optimal economic traffic coverage.
In the present embodiment, firstly, utilizing formula Δ P=P0+η2PKDistribution transforming total losses are calculated, in formula, Δ P is total losses, P0
For rated no-load loss, PKFor nominal load loss, η is distribution transformer load rate.
Secondly, utilizing formulaThe proportion of goods damageds of distribution transforming are calculated, Δ P% is with loss on transmission in formula
Consumption rate, PLoadFor institute's on-load of transformer.
Then, formula is utilizedCalculate the Optimal load coefficient of distribution transforming.
Finally, determining the optimal economic traffic coverage of distribution transforming.
S322: in optimal economic traffic coverage, formula is utilizedIt calculates separately any
In power supply zone in typical residential area different type distribution transforming comprehensive energy consumption expense.
Wherein, TOC is the comprehensive energy consumption expense of distribution transforming, and CI is the initial cost of distribution transforming, and E is the mean hours of distribution transforming user
Electricity price, n are the Economic Life of transformer, and general value is 20 years, and i is year discount rate, and discount rate is usually less than within this year
With term banker's call rate value, Kpv is the continuous n annual cost present value factor that discount rate is i, and Hpy is to charge hour in distribution transforming year
Number, τ are that hourage is lost in year maximum load, and η is the initial load rate of distribution transforming.
S323: under same distribution transformer load rate, the comprehensive energy consumption expense of different type distribution transforming is compared, determines comprehensive energy consumption expense
With the smallest distribution transformer allocation plan, distribution transformer allocation plan includes the model of distribution transforming.
Comprehensive energy consumption method assumes that cell load is certain, and in the case where load is certain, there are many schemes for configuration distribution transforming.Match
When change type is identical, the higher comprehensive energy consumption of distribution transformer load rate is smaller, to determine minimum comprehensive energy consumption expense, selects distribution transformer load rate
Higher distribution transforming type can determine cell transformer configuration scheme；When distribution transforming type difference, under same load factor, to integrate energy
Minimum target is expended, can determine cell transformer configuration scheme.
Usually finally determining distribution transformer scheme is a kind of with Variant number.Scheme can match after determining according to identified
Variant number recommends distribution transformer load rate in typical cell in each power supply zone.
Such as: set peak load as 1000kW, can choose S13-200, S13-400, SH15-200, SH15-400 this four
Distribution transforming is planted, each selection scheme TOC comparing result is as shown in table 1 under different loads rate.
Each scheme TOC result table under 1 different loads rate of table
The TOC of each scheme schemes referring to fig. 4, although the distribution transforming of various models is in optimized operation zone distribution transforming under different loads rate
The proportion of goods damageds are minimum, but since optimized operation zone distribution transformer load rate is lower, and newly-built distribution transforming number is caused to increase.If passed through by distribution transforming
Ji operation calculates for the time limit 20 years, and as shown in Figure 4, for distribution transformer load rate between 55%~70%, each scheme TOC is best.
S324: corresponding distribution transformer load rate when with comprehensive energy consumption expense minimum is occupied as typical in any power supply zone
The distribution transformer load rate of people's cell.
The prediction load total amount that typical residential area in any power supply zone is got by step S31, passes through step S32
After getting distribution transformer load rate, execute step S33: according to the prediction load total amount of residential area typical in any power supply zone and
Distribution transformer load rate determines the capacity of distribution transform per family of typical residential area in any power supply zone.
Using comprehensive energy consumption method available distribution transformer load rate section, such as (60%, 75%), select lower limit 60% for
Distribution transformer load rate value.
Multiclass may be divided by cluster result in this present embodiment, such as: cluster result is divided into 3 classes, can sieve from this 3 class
3 typical residential areas are selected, 3 typical corresponding 3 distribution transformer load rates in residential area therefrom select the minimum of distribution transformer load rate
Value, i.e. lower limit.
Specifically, there are two types of implementation methods by step S33, are respectively as follows:
The first implementation method includes:
S331: according to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, public affairs are utilized
FormulaCalculating the distribution transforming total capacity of typical residential area in any power supply zone, wherein S is distribution transforming total capacity,
Ppre is the load total amount of prediction, and η is the load factor of transformer, and cos φ av is compensated average power factor.
S332: it is occupied according to typical in the distribution transforming total capacity of residential area typical in any power supply zone and any power supply zone
The amount of people's cell, utilizes formulaBe calculated in any power supply zone typical residential area per family with transfiguration
Amount, wherein Sav is that capacity of distribution transform, Nc are the number of users that distribution transforming is related to per family.
Second of implementation method:
According to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, formula is utilizedCalculate the capacity of distribution transform per family of typical residential area in any power supply zone, wherein cos φ i is i-th of user
Power factor.
Wherein, i >=0.9 cos φ of the side substation 10kV, capacity reach the cos φ i of the power consumer of 100kVA or more
>=0.9, i >=0.8 cos φ of agricultural user.
Both the above determines in any power supply zone in the method for the capacity of distribution transform per family of typical residential area, due to reality
In operation, the powerfactorcosφ i of i-th of user is more more convenient than compensated average power factor cos φ av to be calculated, preferably
Second of implementation method.
With continued reference to Fig. 1 it is found that after getting the capacity of distribution transform per family of the typical residential area of any power supply zone, execute
Step S4: using the capacity of distribution transform per family of residential area typical in any power supply zone as standard, to the family in any power supply zone
Equal distribution transforming carries out capacity distribution.
Specifically, step S4 includes:
S41: the upper limit capacity nargin and lower limit of capacity of distribution transform per family in any power supply zone are determined using expert's Evaluation Method
Capacity Margin.
In the present embodiment, it is abundant that determining capacity can be assessed according to the actual conditions of power supply area using expert's Evaluation Method
Degree, so as to further increase the accuracy of typical cell selection, so that the selection of typical cell is more comprehensive, quasi-
Really, be conducive to improve the accuracy that capacity of distribution transform calculates per family.
S42: according to the maximum value of the capacity of distribution transform per family Savmax and upper limited capacity of residential area typical in any power supply zone
It measures nargin and calculates the maximum value of the capacity of distribution transform per family in any power supply zone using formula S 1=(1+A1) * Savmax,
In, S1 is the maximum value of the capacity of distribution transform per family of any power supply zone, and Savmax is typical residential area in any power supply zone
Capacity of distribution transform per family maximum value.
S43: according to the minimum value of the capacity of distribution transform per family Savmin and lower limited capacity of residential area typical in any power supply zone
It measures nargin A2 and calculates the minimum value of the capacity of distribution transform per family in any power supply zone using formula S 2=(1-A2) * Savmin
S2, wherein S2 is the minimum value of the capacity of distribution transform per family of any power supply zone, and Savmin is typical resident in any power supply zone
The minimum value of the capacity of distribution transform per family of cell.
It is+5% by the upper limit capacity nargin A1 that expert's Evaluation Method is got in the present embodiment, lower limit capacity nargin A2
It is -2%.
Compare the capacity of distribution transform per family of typical residential area in each power supply zone, maximum value Savmax, minimum value is
Therefore Savmin when upper limit capacity nargin A1 is+5%, and lower limit capacity nargin A2 is -2%, matches per family in the power supply zone
The varying capacity upper limit is 1.05Savmax, lower limit 0.98Savmin.
Multiclass may be divided by cluster result in this present embodiment, such as: cluster result is divided into 3 classes, can sieve from this 3 class
Select 3 typical residential areas.The capacity of distribution transform per family of 3 typical cells, 3 typical cells family are got according to the above method
Equal capacity of distribution transform compares, maximum value Savmax, and minimum value Savmin, 1.05Savmax are the upper limit family of the power supply zone
Equal capacity of distribution transform standard, 0.98Savmin are power supply zone lower limit capacity of distribution transform standard per family
In conclusion the application is by from the smallest angle of comprehensive energy consumption expense, determining the family of typical case residential area first
Equal capacity of distribution transform supply where typical residential area then using the capacity of distribution transform per family of typical residential area as reference standard
The capacity of distribution transform standard configuration per family of electric subregion is conducive to the reasonable employment of electric power resource, and can be in comprehensive energy consumption expense
Under minimum, farthest meet resident's power demands, and then effectively avoids powering in town and country distribution construction
The generation for phenomena such as scarce capacity or electric power resource waste.
The above is only the specific embodiment of the application, make skilled artisans appreciate that or realization the application.It is right
A variety of modifications of these embodiments will be apparent to one skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application will not
Be intended to be limited to the embodiments shown herein, and be to fit to it is consistent with the principles and novel features disclosed in this article most
Wide range.
Claims (10)
1. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone, which is characterized in that the described method includes:
S1: classify according to power supply zone to all residential areas to be configured, the type of all residential areas includes:
A+ class, A class, B class, C class and D class；
S2: typical residential area is screened in multiple power supply zones respectively；
S3: the capacity of distribution transform per family of the typical residential area of any power supply zone in multiple power supply zones is calculated；
S4: using the capacity of distribution transform per family of residential area typical in any power supply zone as standard, to any power supply point
Distribution transforming per family in area carries out capacity configuration.
2. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 1, feature exist
In step S2 includes:
S21: one or more representative regions in any power supply zone are obtained；
S22: the typical daily load characteristic curve of all residential areas in one or more of representative regions is obtained；
S23: adaptive fuzzy C means Method is utilized, to the allusion quotation of all residential areas in one or more of representative regions
Type daily load characteristic curve is clustered；
S24: according to cluster result, the typical residential area in any power supply zone is filtered out using weighted center of gravity method.
3. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 2, feature exist
In step S24 includes:
S241: according to the typical daily load characteristic curve of all residential areas in one or more of representative regions, institute is obtained
State the characteristic peak valley feature F of typical daily load of any power supply zoneiWith charge level feature Qi；
S242: by the characteristic peak valley feature F of the typical daily load of any power supply zoneiWith charge level feature QiMake
Position and center of gravity for cell i, utilize formulaThe center of gravity W of j class cell where calculating cell ij, wherein Fi∈
I, CjFor j class cell number, the peak valley feature F of load curveiFor the percentage of unit hour electricity consumption, when reflecting cell i load
Section distribution, is divided into 24 periods, remembers Fi={ F0, F1 ..., F23 }；Charge level feature QiFor user's daily power consumption；
S243: formula MIN f=is utilized | | Fi-Wj| |, the determining typical daily load characteristic curve nearest from cell center of gravity Wj；
S244: with residential area corresponding to the typical daily load characteristic curve nearest from cell center of gravity Wj, as described any
Typical residential area in power supply zone.
4. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 1, feature exist
In step S3 includes:
S31: the prediction load total amount of typical residential area in any power supply zone is calculated, and to any power supply zone
Interior typical residential area carries out load prediction；
S32: the distribution transformer load rate of typical residential area in any power supply zone is determined using comprehensive energy consumption method；
S33: according to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, determine described in
The capacity of distribution transform per family of typical residential area in any power supply zone.
5. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 4, feature exist
In step S31 includes:
S311: the basic data of typical residential area in acquisition any power supply zone, the basic data includes: typical residence
The built time, amount, construction area and the historical load of people's cell；
S312: true using demand coefficient method according to the amount and construction area of residential area typical in any power supply zone
The distant view saturation loading of typical residential area in fixed any power supply zone；
S313: according to the built time of residential area typical in any power supply zone, historical load, load growth rate and
Distant view saturation loading determines that the developing stage of typical residential area in any power supply zone, the developing stage include: hair
During exhibition initial stage, high-speed development period or development saturation；
S314: when the developing stage of residential area typical in any power supply zone is the early stage of development, according to described any
The basic data and distant view saturation loading of typical residential area in power supply zone, simulate the nearly any confession of mid-term using Logistic method
The load growth curve of typical residential area in electric subregion.
6. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 5, feature exist
In step S314 includes:
The load growth curve of typical residential area in any power supply zone is fitted using Logistic method, wherein
The curvilinear equation of Logistic method isK>0, a>0, b<0 and be constant, t is time, ytFor power load charge values.
7. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 4, feature exist
In step S32 includes:
S321: the optimal economic traffic coverage of typical residential area multiple types distribution transforming in any power supply zone, institute are determined
State optimal economic traffic coverage are as follows: the distribution transforming traffic coverage under certain load, when distribution transforming coefficient of losses is minimum；
S322: in the optimal economic traffic coverage, formula is utilizedIt calculates separately described
In any power supply zone in typical residential area different type distribution transforming comprehensive energy consumption expense, wherein TOC is the synthesis energy of distribution transforming
It expends and uses, CI is the initial cost of distribution transforming, and E is the mean hours electricity price of distribution transforming user, and n is the Economic Life of transformer, i
For year discount rate, Kpv is the continuous n annual cost present value factor that discount rate is i, and Hpy is to charge hourage distribution transforming year, τ be year most
Hourage is lost in heavy load, and η is the initial load rate of distribution transforming；
S323: under same distribution transformer load rate, the comprehensive energy consumption expense of different type distribution transforming is compared, determines comprehensive energy consumption expense most
Small distribution transformer allocation plan, the distribution transformer allocation plan include a variety of different types of distribution transformings；
S324: corresponding distribution transformer load rate when with comprehensive energy consumption expense minimum is occupied as typical in any power supply zone
The distribution transformer load rate of people's cell.
8. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 4, feature exist
In step S33 includes:
According to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, formula is utilizedCalculate the distribution transforming total capacity of typical residential area in any power supply zone, wherein S is that distribution transforming is always held
Amount, Ppre are the load total amount of prediction, and η is the load factor of transformer, and cos φ av is compensated average power factor；
It is small according to typical resident in the distribution transforming total capacity of residential area typical in any power supply zone and any power supply zone
The amount in area, utilizes formulaBe calculated in any power supply zone typical residential area per family with transfiguration
Amount, wherein Sav is that capacity of distribution transform, Nc are the number of users that distribution transforming is related to per family.
9. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 4, feature exist
In step S33 includes:
According to the prediction load total amount and distribution transformer load rate of residential area typical in any power supply zone, formula is utilizedCalculate the capacity of distribution transform per family of typical residential area in any power supply zone, wherein cos φ i is i-th
The power factor of user.
10. a kind of standard configuration method of capacity of distribution transform per family based on power supply zone according to claim 8 or claim 9, special
Sign is that step S4 includes:
S41: the upper limit capacity nargin and lower limit of capacity of distribution transform per family is determined in any power supply zone using expert's Evaluation Method
Capacity Margin；
S42: according to the maximum value of the capacity of distribution transform per family Savmax and upper limited capacity of residential area typical in any power supply zone
It measures nargin and calculates the maximum value of the capacity of distribution transform per family in any power supply zone using formula S 1=(1+A1) * Savmax,
In, S1 is the maximum value of the capacity of distribution transform per family of any power supply zone, and Savmax is typical in any power supply zone
The maximum value of the capacity of distribution transform per family of residential area；
S43: according to the minimum value of the capacity of distribution transform per family Savmin and lower limited capacity of residential area typical in any power supply zone
Nargin A2 is measured, using formula S 2=(1-A2) * Savmin, calculates the minimum of the capacity of distribution transform per family in any power supply zone
Value S2, wherein S2 is the minimum value of the capacity of distribution transform per family of any power supply zone, and Savmin is any power supply zone
The minimum value of the capacity of distribution transform per family of interior typical case residential area.
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