CN105701735A - Loss reduction potential estimation method and device for power distribution network - Google Patents

Abstract

The invention provides a loss reduction potential estimation method and device for a power distribution network. The method includes obtaining index values of the power distribution network in different target areas; giving scores of different index values according to a predetermined score giving standard and obtaining score values corresponding to the index values in the target areas; obtaining the score values of different target areas in a criterion layer of a power distribution network energy efficiency assessment index system; ranking the comprehensive score values of a solution layer of power distribution network of the target areas from small to large; and determining a to-be-modified target area according to the ranking result. The device includes an index value obtaining unit, a score giving unit, a criterion layer score value obtaining unit, a comprehensive score value obtaining unit, a first ranking unit and a to-be-modified target area determining unit. According to the invention, loss distribution condition of equipment during an operation process can be displayed, so that energy efficiency improvement emphasis can be found.

Description

Damage potential evaluation method and device drop in a kind of power distribution network

Technical field

The present invention relates to a kind of distribution network technology field, particularly relate to a kind of power distribution network and drop damage potential evaluation method and device。

Background technology

For power distribution network, its saving energy and decreasing loss potentiality of accurate evaluation, it is the premise of science expansion reducing energy consumption work, also refers to lead theoretical basis and the fundamental basis of power distribution network energy conservation plan and operation。Due to difference such as distribution network load density, radius of electricity supplys, the current supply loss difference of different power distribution networks is bigger, it is stipulated that identical line loss performance assessment criteria is then not reasonable, it is easy to cause that reducing energy consumption works unsuccessfully。

Current electrical network saving energy and decreasing loss Potential Evaluation aspect rarely has research, drops particularly in each target area of accurate evaluation and carries out under the premise damaging Potentiality。

Summary of the invention

The present invention provides a kind of power distribution network to drop damage potential evaluation method and device, the loss distribution situation of equipment component and running thereof can be represented, the sequence of the solution layer comprehensive scores according to the power distribution network to each target area described can accurately be found out efficiency and promote emphasis, contribute to the reasonable disposition of fund for technical innovation and the enforcement of distribution network planning and Energy-saving Projects。

First aspect, the present invention provides a kind of power distribution network to drop damage potential evaluation method, including:

Obtaining the indices value of the power distribution network of each target area, described desired value respectively refers to target value in indicator layer for each target area in power distribution network energy efficiency evaluation index system；

Indices value is given a mark by the scoring criterion according to each default index, obtains fractional value corresponding with each desired value in each target area；

Each target area score value of rule layer in described power distribution network energy efficiency evaluation index system is obtained according to described fractional value；

The comprehensive scores of the solution layer of the power distribution network of each target area is obtained according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system；

The solution layer comprehensive scores of the power distribution network of each target area described is ranked up according to ascending order；

According to ranking results, it is determined that target area to be rebuilt。

Preferably, according to ranking results, it is determined that after target area to be rebuilt, described method also includes:

Calculate indices value and the difference of same desired value in other target areas of the power distribution network of described target area to be rebuilt, form multiple difference；Wherein, other target areas described are the target area in each target area described except described target area to be rebuilt；

The plurality of difference is ranked up；

According to ranking results, it is determined that the power distribution network of described target area to be rebuilt damage factor drops。

Preferably, before obtaining the indices value of power distribution network of each target area, described method also includes:

According to power distribution network integrated planning, run present situation, set up a set of power distribution network energy efficiency evaluation index system from medium-voltage line, distribution transformer, low voltage electric network aspect。

Preferably, described obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system according to described fractional value, specifically include:

Analytic hierarchy process (AHP) is adopted to determine the weight of indicator layer in described power distribution network energy efficiency evaluation index system；

The judgment matrix constituted by fractional value corresponding with each desired value in each target area and the multiplied by weight of indicator layer in described power distribution network energy efficiency evaluation index system, obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system。

Preferably, obtain the comprehensive scores of the solution layer of the power distribution network of each target area according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system, specifically include:

Analytic hierarchy process (AHP) is adopted to determine the weight of rule layer in described power distribution network energy efficiency evaluation index system；

By described judgment matrix and the multiplied by weight of rule layer in described power distribution network energy efficiency evaluation index system, obtain the comprehensive scores of the solution layer of the power distribution network of each target area。

Preferably, the judgment matrix that in each target area described, the fractional value corresponding with each desired value is constituted is:

$M=\left\{\begin{array}{c}{m}_{ij}=f_i/f_j,i\≠j\\ m_{ji}=1/m_{ij},i\≠j\\ 1,i=j\end{array}\right.$

Wherein, M is described judgment matrix, and i, j are the ordinal number of desired value, f in indicator layer_iAnd f_jRespectively corresponding with i-th desired value in target area fractional value and fractional value corresponding to jth desired value。

Second aspect, the present invention also provides for a kind of power distribution network and drops damage Potential Evaluation device, including:

Desired value acquiring unit, obtains the indices value of the power distribution network of each target area, and described desired value respectively refers to target value in indicator layer for each target area in power distribution network energy efficiency evaluation index system；

Marking unit, gives a mark to indices value according to the scoring criterion of each default index, obtains fractional value corresponding with each desired value in each target area；

Rule layer score value acquiring unit, obtains each target area score value of rule layer in described power distribution network energy efficiency evaluation index system according to described fractional value；

Comprehensive scores acquiring unit, obtains the comprehensive scores of the solution layer of the power distribution network of each target area according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system；

First sequencing unit, is ranked up the solution layer comprehensive scores of the power distribution network of each target area described according to ascending order；

Unit is determined in target area to be rebuilt, according to ranking results, it is determined that target area to be rebuilt。

Preferably, described device also includes:

Difference acquiring unit, according to ranking results, it is determined that after target area to be rebuilt, calculates indices value and the difference of same desired value in other target areas of the power distribution network of described target area to be rebuilt, forms multiple difference；Wherein, other target areas described are the target area in each target area described except described target area to be rebuilt；

Second sequencing unit, is ranked up the plurality of difference；

Damage factor acquiring unit drops, according to ranking results, it is determined that the power distribution network of described target area to be rebuilt damage factor drops。

Preferably, described device also includes:

Power distribution network energy efficiency evaluation index system sets up unit, before obtaining the indices value of power distribution network of each target area, according to power distribution network integrated planning, run present situation, set up a set of power distribution network energy efficiency evaluation index system from medium-voltage line, distribution transformer, low voltage electric network aspect。

Preferably, rule layer score value acquiring unit, it is additionally operable to,

Analytic hierarchy process (AHP) is adopted to determine the weight of indicator layer in described power distribution network energy efficiency evaluation index system；

The judgment matrix constituted by fractional value corresponding with each desired value in each target area and the multiplied by weight of indicator layer in described power distribution network energy efficiency evaluation index system, obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system。

As shown from the above technical solution, the present invention can represent the loss distribution situation of equipment component and running thereof, the sequence of the solution layer comprehensive scores according to the power distribution network to each target area described can accurately be found out efficiency and promote emphasis, contribute to the reasonable disposition of fund for technical innovation and the enforcement of distribution network planning and Energy-saving Projects。

Accompanying drawing explanation

Fig. 1 is that the flow chart damaging potential evaluation method drops in the power distribution network that one embodiment of the invention provides。

The structural representation damaging Potential Evaluation device drops in Fig. 2 for the power distribution network that one embodiment of the invention provides。

Detailed description of the invention

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail。Following example are used for illustrating the present invention, but are not limited to the scope of the present invention。

Fig. 1 is that the flow chart damaging potential evaluation method drops in the power distribution network that one embodiment of the invention provides。

As it is shown in figure 1, damage potential evaluation method drops in the power distribution network that one embodiment of the invention provides, including:

In step S101, obtaining the indices value of the power distribution network of each target area, described desired value respectively refers to target value in indicator layer for each target area in power distribution network energy efficiency evaluation index system；

Specifically, before this step, described method also includes: according to power distribution network integrated planning, runs present situation, sets up a set of power distribution network energy efficiency evaluation index system from medium-voltage line, distribution transformer, low voltage electric network aspect。Described power distribution network energy efficiency evaluation index system is be suitable for power distribution network energy efficiency evaluation index system (as follows) of low and medium voltage distribution network efficiency feature。

Wherein, described power distribution network energy efficiency evaluation index system includes rule layer and indicator layer。Indicator layer includes medium-voltage line a1, distribution transformer a2 and low voltage electric network a3。Medium-voltage line in rule layer includes the medium-voltage line radius of electricity supply qualification rate p1 in indicator layer, middle pressure basic routing line cross section qualification rate p2, medium-voltage line accesses distribution transforming total capacity qualification rate p3, novel energy-conserving wire accounting p4, extended active duty circuit accounting p5, distributed power source capacity accounting p6, medium-voltage line load is at economic interval bar digit rate p7, medium-voltage line average power factor qualification rate p8, medium-voltage line is mutually for contact rate p9, medium-voltage line capacitor can operational percentage p10, distributed power source generated energy accounting p11, medium-voltage line proportion of goods damageds p12, medium-voltage line proportion of goods damageds qualification rate p13。Medium-voltage line radius of electricity supply qualification rate p1, middle pressure basic routing line cross section qualification rate p2, medium-voltage line access distribution transforming total capacity qualification rate p3, novel energy-conserving wire accounting p4, extended active duty circuit accounting p5, distributed power source capacity accounting p6 belong to the Static State Index b1 of the medium-voltage line a1 in rule layer；Medium-voltage line load operational percentage p10, distributed power source generated energy accounting p11 can belong to the dynamic indicator b2 of the medium-voltage line a2 in rule layer for contact rate p9, medium-voltage line capacitor mutually at economical interval bar digit rate p7, medium-voltage line average power factor qualification rate p8, medium-voltage line；Medium-voltage line proportion of goods damageds p12, medium-voltage line proportion of goods damageds qualification rate p13 belong to the loss objective b3 of the medium-voltage line a3 in rule layer。Distribution transformer a2 in rule layer includes the transformator installation site specification rate p14 in indicator layer, energy-efficient distribution transforming accounting p15, distribution transforming reactive-load compensation configuration installation rate p16, capacity of reactive power compensation device accounting p17, distribution transforming load at optimized operation zone number of units rate p18, distribution transforming reactive power compensator operational percentage p19, distribution transforming power factor qualification rate p20, distribution transformer proportion of goods damageds p21, distribution loss qualification rate p22。Transformator installation site specification rate p14, energy-efficient distribution transforming accounting p15, distribution transforming reactive-load compensation configure the Static State Index b4 that installation rate p16, capacity of reactive power compensation device accounting p17 belong to the distribution transformer a2 in rule layer, distribution transforming load belongs to the dynamic indicator b5, distribution transformer proportion of goods damageds p21 of the distribution transformer a2 in rule layer at optimized operation zone number of units rate p18, distribution transforming reactive power compensator operational percentage p19, distribution transforming power factor qualification rate p20, distribution loss qualification rate p22 belongs to the loss objective b6 of the distribution transformer a2 in rule layer。Low voltage electric network a3 in rule layer includes the low-voltage circuit radius of electricity supply qualification rate p23 in indicator layer, low voltage electric network backbone cross section qualification rate p24, low voltage electric network novel energy-conserving wire accounting p25, service conductor averga cross section qualification rate p26, access low voltage electric network distributed power source capacity accounting p27, low voltage electric network three-phase load unbalance degree qualification rate p28, low voltage electric network supply voltage qualification rate p29, low voltage electric network harmonic content qualification rate p30, low voltage electric network distributed power source generated energy accounting p31, the comprehensive line loss per unit p32 of low voltage electric network, low voltage electric network proportion of goods damageds qualification rate p33。Low-voltage circuit radius of electricity supply qualification rate p23, low voltage electric network backbone cross section qualification rate p24, low voltage electric network novel energy-conserving wire accounting p25, service conductor averga cross section qualification rate p26, access the low voltage electric network distributed power source capacity accounting p27 Static State Index b7 belonging to the low voltage electric network a3 in rule layer, low voltage electric network three-phase load unbalance degree qualification rate p28, low voltage electric network supply voltage qualification rate p29, low voltage electric network harmonic content qualification rate p30, low voltage electric network distributed power source generated energy accounting p31 belongs to the dynamic indicator b8 of the low voltage electric network a3 in rule layer, the comprehensive line loss per unit p32 of low voltage electric network, low voltage electric network proportion of goods damageds qualification rate p33 belongs to the loss objective b9 of the low voltage electric network a3 in rule layer。

Below by an embodiment, said method case being described in detail, the target area of this embodiment is divided into I, II, and the power supply area at place is belonging respectively to A, B。

This embodiment is utilized to obtain each index attribute value, in Table 1。

Table 1 target area I, II indicator layer property value

Then, in step s 102, according to the scoring criterion of each default index, indices value is given a mark, obtain fractional value corresponding with each desired value in each target area。

According to indicator layer property value (indicator layer property value and desired value) and each index scoring criterion, obtain the marking of each index, in Table 2

The indicator layer score value of table 2 target area I, II

Each index scoring criterion is as follows:

(1) quantization of medium-voltage line radius of electricity supply qualification rate p1 index and assessment

Medium-voltage line radius of electricity supply qualification rate meets the bar number of standard-required divided by medium-voltage line total number equal to medium-voltage line radius of electricity supply, less than or equal to radius of electricity supply reference value, qualified；More than maximum radius of electricity supply reference value, defective。For A, B class power supply area: less than or equal to 3km, qualified；More than 3km, defective。For C class power supply area: less than or equal to 5km, qualified；More than 5km, defective。For A～C class power supply area, middle pressure backbone average radius of electricity supply qualification rate index value takes correspondingly sized score value according to its value size。Such as, if middle pressure backbone radius of electricity supply qualification rate is 100%, its value takes 100 points；If middle pressure backbone radius of electricity supply qualification rate is 90%, then taking 90 points, the rest may be inferred。

(2) quantization and the assessment of backbone cross section qualification rate p2 index are pressed in

Middle pressure backbone cross section qualification rate meets the number of lines of standard-required divided by medium voltage distribution network circuit total number equal to middle pressure backbone cross section。If actual wire sectional area is within the scope of directive/guide recommendation, then it is assumed that qualified, it is otherwise defective。That is: medium-voltage line is generally divided into overhead transmission line and cable run two kinds。Medium-voltage line backbone refers to and starts from transformer station's outlet bus, carries the line segment of main electric power transmission。Specifying according to " distribution network planning designing technique directive/guide ", the power distribution network sectional area of wire at the same area should make every effort to consistent, and backbone sectional area of wire is no more than three kinds。Main transformer capacity exceedes the cooperation of 10kV outgoing line interval and line conductor sectional area and is generally referred to subscript and selects。

With reference to above-mentioned, it is determined that evaluation criterion is as follows:

For A, B, C class power supply area, medium-voltage line (cable) sectional area of wire is 400,300,240, qualified；Medium-voltage line (aerial line) sectional area of wire is 240,185,150, qualified。Middle pressure backbone cross section qualification rate index value takes correspondingly sized score value according to its value size。Such as, if middle pressure backbone cross section qualification rate is 100%, its value takes 100 points；If middle pressure backbone cross section qualification rate is 90%, then taking 90 points, the rest may be inferred。

(3) medium-voltage line accesses quantization and the assessment of distribution transformer total capacity qualification rate p3 index

Medium-voltage line accesses distribution transformer total capacity qualification rate and on average accesses distribution transformer total capacity acceptance line travel permit number divided by medium voltage distribution network circuit total number equal to circuit, and it is qualified less than its Total transfer capability that circuit accesses distribution transformer total capacity。For A～C class power supply area, medium-voltage line accesses distribution transformer total capacity qualification rate index value and takes correspondingly sized score value according to its value size。Such as, if it is 100% that medium-voltage line accesses distribution transformer total capacity qualification rate, its value takes 100 points；If it is 90% that medium-voltage line accesses distribution transformer total capacity qualification rate, then taking 90 points, the rest may be inferred。

(4) quantization of novel energy-conserving wire accounting p4 index and assessment

Novel energy-conserving wire accounting is equal to novel energy-conserving wire total number/medium voltage distribution network circuit total number

For A class power supply area: novel energy-conserving wire accounting, less than 10%, 40 points；More than 10%, less than 20%, 60 points；More than 20%, less than 30%, 80 points；More than 30%, 100 points。For B～C class power supply area: novel energy-conserving wire accounting, less than 5%, 40 points；More than 5%, less than 15%, 60 points；More than 15%, less than 25%, 80 points；More than 25%, 100 points。

(5) quantization of the medium-voltage line bar number accounting p5 index that extends service in the army and assessment

Extended active duty medium-voltage line bar number accounting is equal to extended active duty medium-voltage line bar number divided by medium voltage distribution network circuit total number, and medium-voltage line designs generally according to 20 years life cycles, and the circuit exceeding this life cycle (20 years) is considered as extended active duty circuit。Extended active duty number of lines accounting, equal to 0,100 point；More than 0, less than 10%, 80 points；More than 10%, less than 20%, 60 points；More than 20%, 40 points。

(6) quantization of distributed power source access capacity accounting p6 index and assessment

Distributed power source access capacity accounting is equal to accessing medium voltage distribution network distributed power source installed capacity divided by assessment area transformer station power transformation capacity。Distributed power source access capacity accounting, less than 30%, 60 points；More than 30%, less than 60%, 80 points。More than 60%, 100 points。

(7) medium-voltage line load is in the quantization of economic interval bar digit rate p7 index and assessment

Medium-voltage line load is equal to medium-voltage line average current carrying density bar number in circuit allows by maximum current 30%～70% divided by medium voltage distribution network circuit total number in economic interval bar digit rate。Medium-voltage line load takes correspondingly sized score value in economic interval bar digit rate index value according to its value size。Such as, if medium-voltage line load is 100% in economic interval bar digit rate, its value takes 100 points；If medium-voltage line load is 90% in economic interval bar digit rate, then take 90 points；The rest may be inferred。

(8) quantization of medium-voltage line average power factor qualification rate p8 index and assessment

Medium-voltage line average power factor qualification rate is equal to the qualified bar number of medium-voltage line supply side average power factor divided by medium voltage distribution network circuit total number。Being main medium-voltage line to agricultural load, the standard that its power factor is qualified is 0.85, is main or for commerce and service sectors medium-voltage line for industrial load, and the standard that its power factor is qualified is 0.9。Medium-voltage line average power factor qualification rate index value takes correspondingly sized score value according to its value size。Such as, if medium-voltage line average power factor qualification rate is 100%, its value takes 100 points；If medium-voltage line average power factor qualification rate is 90%, then take 90 points；The rest may be inferred。

(9) medium-voltage line is mutually for the quantization of contact rate p9 index and assessment

Medium-voltage line can supply the number of lines got in touch with divided by medium voltage distribution network circuit total number for contact rate equal to by contact block switch mutually mutually。At present, there is no relevant criterion and code and medium-voltage line is made clear stipulaties for contact rate mutually。Medium-voltage line is more high for contact rate mutually, and power supply reliability is also more high, but the impact of centering pressure line loss rate is not notable。For A class power supply area: medium-voltage line supplies contact rate mutually, 100%, 100 point；90%～100%, 60 points；Less than 90%, 40 points。For B class power supply area: medium-voltage line is mutually for contact rate, more than 90%, 100 points；80%～90%, 60 points；Less than 80%, 40 points；For C class power supply area: medium-voltage line supplies contact rate mutually, > 80%, 100 points；70%～80%, 60 points；Less than 70%, 40 points。

(10) medium-voltage line capacitor can the quantization of operational percentage index p 10 and assessment

Medium-voltage line capacitor can put into operation capacitors count divided by assessment area total capacitance device quantity equal to accessing medium voltage distribution network by operational percentage。Medium-voltage line capacitor can operational percentage index, for A class power supply area: 100%, 100 points；More than 90%, 60 points；Less than 90%, 40 points。For B～C class power supply area: 100%, 100 points；More than 80%, 60 points；Less than 80%, 40 points。

(11) quantization of distributed power source generated energy accounting index p 11 and assessment

Distributed power source generated energy accounting is equal to accessing medium voltage distribution network distributed power source generated energy divided by assessment area total electricity consumption (or total delivery is plus distributed power source generated energy)。Distributed power source generated energy accounting, more than 0, less than 10%, 60 points；More than 10%, less than 20%, 80 points；More than 20%, 100 points。

(12) quantization of medium-voltage line proportion of goods damageds index p 12 and assessment

The medium-voltage line proportion of goods damageds are equal to all medium-voltage line loss of electricities divided by middle pressure gross generation

The cattle different power supply area medium-voltage line line loss per unit evaluation criterias in " power distribution network energy efficiency evaluation from drop damage handbook " that meet water and write are as follows: A (midtown), L < 3,2%；B (urban district), 3 < L < 5,3%；C (cities and towns), 5 < L≤10,4%。

With reference to above-mentioned, it is determined that medium-voltage line proportion of goods damageds evaluation criterion is as follows: for A class area: the medium-voltage line proportion of goods damageds, < 2%, 100 points；2%～3%, 80 points；3%～4%, 60 points, > 4%, 40 points。For B class area: the medium-voltage line proportion of goods damageds, < 3%, 100 points；3%～4%, 80 points；4%～5%, 60 points；> 5%, 40 points。For C class area: the medium-voltage line proportion of goods damageds, < 4%, 100 points；4%～5%, 80 points；5%～6%, 60 points；> 6%, 40 points。

(13) quantization of medium-voltage line proportion of goods damageds qualification rate index p 13 and assessment

Medium-voltage line proportion of goods damageds qualification rate is equal to the qualified bar number of single line line loss per unit divided by medium voltage distribution network circuit total number。Whether qualified the medium-voltage line proportion of goods damageds are is evaluated referring also to above-mentioned, therefore is defined below standard: for A class area: the medium-voltage line proportion of goods damageds, < 4%, qualified；> 4%, defective。For B class area: the medium-voltage line proportion of goods damageds,<5%, qualified>5%, defective。For C class area: the medium-voltage line proportion of goods damageds, < 6%, qualified；> 6%, defective。Namely gained medium-voltage line loss qualification rate percentage ratio represent score value according to this, as 80% takes 80 points。

(14) quantization of distribution transformer installation site specification rate index p 14 and assessment

Qualitative index, refers mainly to suburb or low-voltage platform area, rural area, and distribution transformer efficiency evaluation of layouting can be estimated according to the relevant regulations of GB50053。Meet the specification of thinking of relevant regulations, incongruent think lack of standardization。Taking correspondingly sized score value according to the size of specification rate value, if distribution transformer installation site specification rate is 100%, its score value is 100 points；If distribution transformer installation site specification rate is 90%, its score value is 90 points；The rest may be inferred。

(15) quantization of energy-efficient distribution transforming accounting index p 15 and assessment

Energy-efficient distribution transforming accounting is equal to energy-efficient distribution transforming number of units divided by the total number of units of distribution transformer。Energy-efficient distribution transforming accounting, more than 50%, 100 points；More than 40%, less than 50%, 80 points；More than 30%, less than 40%, 60 points；Less than 30%, 40 points。Distribution transformer type selecting should select new model low loss transformer type as far as possible, optional amorphous alloy transformer after technological economics evaluation。With reference to " power distribution network energy efficiency evaluation damages handbook with dropping ", S₁₀And it is following serial for highly energy-consuming distribution transforming, S₁₃And be energy-saving above。

(16) quantization of 100kVA and above distribution transforming reactive power compensator installation rate index p 16 and assessment

100kVA and above distribution transforming reactive power compensator installation rate are equal to the distribution transformer number of units installing reactive power compensator divided by the total number of units of distribution transformer。Reactive power compensator installation rate index value takes correspondingly sized score value according to its value size。Such as, if reactive power compensator installation rate is 100%, its value takes 100 points；If reactive power compensator installation rate is 90%, its value takes 90 points；The rest may be inferred。

(17) quantization of capacity of reactive power compensation device accounting index p 17 and assessment

Capacity of reactive power compensation device accounting is equal to 100kVA and above distribution transforming capacity of reactive power compensation device divided by 100kVA and above distribution transformer total capacity。Capacity of reactive power compensation device accounting, 20%～30%, 100 points；10%～20%, 60 points；30%～40%, 60 points；<10%,>40%, 40 points。

(18) distribution transformer load is in the quantization of economic interval number of units rate index p 18 and assessment

Distribution transformer load economic interval number of units rate equal to distribution transformer load the 30%～70% of bearable load number of units divided by the total number of units of distribution transformer。Distribution transformer load takes correspondingly sized score value in economic interval number of units rate index value according to its value size。Such as, if distribution transformer load is 100% in economic interval number of units rate, its value takes 100 points；If distribution transformer load is 90% in economic interval number of units rate, its value takes 90 points；The rest may be inferred。

(19) quantization of distribution transforming reactive power compensator operational percentage index p 19 and assessment

Reactive power compensator operational percentage is total divided by the distribution transforming installing reactive power compensator equal to the distribution transforming reactive power compensator quantity put into operation。Reactive power compensator operational percentage index, 100%, 100 point；80%～100%, 60 points；Less than 80%, 40 points。

(20) quantization of distribution transforming power factor qualification rate index p 20 and assessment

Distribution transforming power factor qualification rate is equal to the power factor distribution transformer number of units more than 0.90 divided by the total number of units of distribution transformer。Distribution transforming power factor qualification rate index, 100%, 100 point；90%～100%, 60 points；Less than 90%, 40 points。

(21) quantization of distribution transformer proportion of goods damageds index p 21 and assessment

The distribution transformer proportion of goods damageds are equal to distribution transformer loss of electricity divided by medium-pressure electricity supply amount。The cattle different power supply area distribution transformer proportion of goods damageds evaluation criterias in " power distribution network energy efficiency evaluation from drop damage handbook " that meet water and write are as follows: A (midtown), and 1.5%；B (urban district), 2%；C (cities and towns), 2.5%。With reference to above-mentioned, it is determined that distribution transformer proportion of goods damageds evaluation criterion is as follows: for A class area: distribution loss rate, < 1.5%, 100 points；1.5%～2%, 60 points；> 2%, 40 points。For B class area: distribution loss rate, < 2%, 100 points；2%～2.5%, 60 points；> 2.5%, 40 points。For C class area: distribution loss rate, < 2.5%, 100 points；2.5%～3%, 60 points；> 3%, 40 points。

(22) quantization of distribution transformer proportion of goods damageds qualification rate index p 22 and assessment

Distribution transformer proportion of goods damageds qualification rate is equal to the qualified number of units of the distribution transformer proportion of goods damageds divided by the whole distribution transformer number of units in area。Whether qualified the distribution transformer proportion of goods damageds are is evaluated referring also to above-mentioned。A class area: distribution loss rate, < 2%, qualified；> 2%, defective；B class area: distribution loss rate, < 2.5%, qualified；> 2.5%, defective；C class area: distribution loss rate, < 3%, qualified；> 3%, defective。

Distribution transformer proportion of goods damageds qualification rate index value takes correspondingly sized score value according to its value size。Such as, if distribution transformer proportion of goods damageds qualification rate is 100%, its value takes 100 points；If distribution transformer loss rate consumption qualification rate is 90%, its value takes 90 points；The rest may be inferred。

(23) quantization of low-voltage circuit radius of electricity supply qualification rate index p 23 and assessment

Low-voltage circuit radius of electricity supply qualification rate meets the bar number of standard-required divided by low-voltage circuit supply line total number equal to low-voltage circuit radius of electricity supply。Consult " power distribution network energy efficiency evaluation directive/guide ": A class power supply area radius of electricity supply is no more than 150m in principle；B class is no more than 250m；C class is no more than 400m。Consult " rural power grids planning and designing directive/guide " and obtain low-voltage platform area radius of electricity supply index such as following table。

Power supply area type	Electric pressure (kV)	Maximum radius of electricity supply (km)
			A+～A	0.4	0.25
B	0.4	0.3
			C	0.4	0.4
D	0.4	0.5
			E	0.4	0.6

The present embodiment formulates standard with reference to power distribution network energy efficiency evaluation directive/guide。Low-voltage circuit radius of electricity supply is less than or equal to maximum radius of electricity supply, qualified；More than maximum radius of electricity supply, defective。Low-voltage circuit radius of electricity supply qualification rate index value takes correspondingly sized score value according to its value size。Such as, if low-voltage circuit radius of electricity supply qualification rate is 100%, its value takes 100 points；If low-voltage circuit radius of electricity supply qualification rate is 90%, its value takes 90 points；The rest may be inferred。

(24) quantization of low voltage electric network backbone cross section qualification rate index p 24 and assessment

Low voltage electric network backbone cross section qualification rate meets the number of lines of standard-required divided by low voltage electric network backbone total number equal to low voltage electric network backbone nominal section。According to " urban distribution network planning design specification " (GB50613-2010), wire should adopt copper core or aluminum core insulation line, low pressure basic routing line or the cross-section of cable to amass should take 2～3 kinds, and the selection of sectional area of wire is undertaken by specified below。Basic routing line: aerial insulated wire, 240,185,150,120；Cable, 240,185,150；Branched line: aerial insulated wire, 95,70,50；Cable, 120,95,70。According to power distribution network energy efficiency evaluation directive/guide, all kinds of 380/220 basic routing line conductor cross-sections are with reference to chosen below: cable run: A～C class power supply area, be more than or equal to 120, qualified；Overhead transmission line: A～C class power supply area is be more than or equal to 120, qualified。With reference to above-mentioned, following consideration is done in the quantization of low voltage electric network backbone cross section qualification rate index。A～C class power supply area: be more than or equal to 120, qualified。Low voltage electric network backbone cross section qualification rate index value takes correspondingly sized score value according to its value size。Such as, if low voltage electric network backbone cross section qualification rate is 100%, this desired value takes 100 points；If low voltage electric network backbone cross section qualification rate is 90%, then take 90 points；The rest may be inferred。

(25) quantization of low voltage electric network novel energy-conserving wire accounting index p 25 and assessment

Novel energy-conserving wire accounting is equal to novel energy-conserving wire total number divided by low-voltage network line total number。For A class power supply area: novel energy-conserving wire accounting, less than 10%, 40 points；More than 10%, less than 20%, 60 points；More than 20%, less than 30%, 80 points；More than 30%, 100 points。For B～C class power supply area: novel energy-conserving wire accounting, less than 5%, 40 points；More than 5%, less than 15%, 60 points；More than 15%, less than 25%, 80 points；More than 25%, 100 points。

(26) quantization of service conductor cross section qualification rate index p 26 and assessment

Service conductor cross section qualification rate meets the bar number of standard divided by low voltage electric network service conductor total number equal to service conductor nominal section。Service conductor mostly is copper core cable poling and enters wall installation laying mode。One lower connect user 2 family of road service conductor, service conductor cross section adopts 16mm², 3 to 4 families adopt 25mm², 5 families adopt 35mm to 6 families², more than 7 families adopt 50mm², lower a connect user of road service conductor is usually no more than 10 families。The value of index carries out according to the following rules: A class power supply area: >=50, qualified；B class power supply area: >=35 is qualified；C class power supply area: >=25 is qualified。Service conductor cross section qualification rate index value takes correspondingly sized score value according to its value size。Such as, if service conductor cross section qualification rate is 100%, then service conductor cross section qualification rate refers to that target value takes 100 points；If service conductor cross section qualification rate is 90%, then take 90 points；The rest may be inferred。

(27) quantization and the assessment of low voltage electric network distributed power source capacity accounting index p 27 are accessed

Access low voltage electric network distributed power source capacity accounting equal to accessing low voltage electric network distributed power source total capacity divided by low voltage electric network transformator total capacity。According to practical situation, access low voltage electric network distributed power source capacity accounting index value is carried out according to following rule。Access low voltage electric network distributed power source capacity accounting, more than 0, less than 20%, 60 points；More than 20%, less than 60%, 80 points；More than 60%, 100 points。

(28) quantization of low-voltage load tri-phase unbalance factor qualification rate index p 28 and assessment

Low-voltage load tri-phase unbalance factor qualification rate is equal to the low-voltage three-phase load unbalance factor platform district quantity lower than 15% divided by low-voltage platform area total quantity。The present embodiment is researched and proposed, and low-voltage load tri-phase unbalance factor qualification rate index value takes correspondingly sized score value according to its value size。Such as, if low-voltage load tri-phase unbalance factor qualification rate is 100%, its value takes 100 points；If low-voltage load tri-phase unbalance factor qualification rate is 90, its value takes 90 points；The rest may be inferred。

(29) quantization of low-voltage power supply rate of qualified voltage index p 29 and assessment

Low-voltage power supply rate of qualified voltage is equal to the voltage monitoring point quantity meeting rate of qualified voltage divided by low voltage voltage monitoring point total quantity。Regulation according to GB/T12325,380V three phase supply voltage tolerance value be nominal system voltage ± 7%, 220V single phase power supply voltage tolerance is+7%～-the 10% of nominal system voltage, arranges low-voltage power supply rate of qualified voltage index value and takes correspondingly sized score value according to its value size。Such as, if low-voltage power supply rate of qualified voltage is 100%, its value takes 100 points；If low-voltage power supply rate of qualified voltage is 90%, its value takes 90 points；The rest may be inferred。

(30) quantization of low voltage electric network harmonic content qualification rate index p 30 and assessment

Low voltage electric network harmonic content qualification rate meets the platform district quantity of standard-required divided by low-voltage platform area total quantity equal to harmonic content。For 0.38kV, voltage total harmonic distortion factor should be maintained at less than 5.0%, should below 4.0% to odd harmonic voltage containing ratio, should below 2.0% to even harmonic voltages containing ratio。Low voltage electric network harmonic content qualification rate index value takes correspondingly sized score value according to its value size。Such as, if low voltage electric network harmonic content qualification rate is 100%, its value takes 100 points；If low voltage electric network harmonic content qualification rate is 90%, its value takes 90 points；The rest may be inferred。

(31) quantization of low voltage electric network distributed power source generated energy accounting index p 31 and assessment

Distributed power source generated energy accounting is equal to accessing low voltage electric network distributed power source generated energy divided by low voltage electric network user's total electricity consumption (or the total delivery in low-voltage platform area is plus distributed power source gross generation)。Low-voltage platform area distributed power source accesses, and can reduce the long-distance transmissions of power, thus reducing line loss in on-site elimination situation；On the other hand, it is possible to effectively solve low-voltage problem, it is also possible to the problems such as voltage is higher, power is out-of-limit can be brought, and, generated output is more big, and generated energy is more many, and voltage is higher, the out-of-limit problem of power is more prominent。Visible, generated output, generated energy are unsuitable too high。Generally when meeting electric power network technique, low voltage electric network distributed power source generated energy accounting is more high, and the overall efficiency level of electrical network is also more high。Considering based on this kind, low voltage electric network distributed power source generated energy accounting index value carries out according to following rule。Low voltage electric network distributed power source generated energy accounting, more than 0, less than 5%, 60 points；More than 5%, less than 15%, 80 points；More than 15%, 100 points。

(32) quantization of the comprehensive line losses indices p32 of low voltage electric network and assessment

The comprehensive line loss per unit of low voltage electric network is equal to (the total delivery of low voltage electric network deducts low voltage electric network family table total electricity consumption) divided by the total delivery of low voltage electric network。Consulting low-voltage network energy efficiency evaluation directive/guide, different low-voltage power supply block supply radius evaluation criterias are as follows: the comprehensive line loss per unit of low voltage electric network, A (midtown), and < 4%；B (urban district), < 6%；C (cities and towns), < 8%。According to this, low voltage electric network comprehensive line loss per unit index score value carries out according to the following rules: A class area: the comprehensive line loss per unit of low voltage electric network, < 3%, 100 points；3%～4%, 60 points；> 4%, 40 points。B class area: the comprehensive line loss per unit of low voltage electric network, < 5%, 100 points。5%～6%, 60 points。> 6%, 40 points。C class area: the comprehensive line loss per unit of low voltage electric network, < 7%, 100 points；7%～8%, 60 points；> 8%, 40 points。

(33) low voltage electric network loss qualification rate index P₃₃Quantization and assessment

Low-voltage platform area quantity/the area of low voltage electric network loss qualification rate=meet grid loss rate standard-required is distribution transformer number of units A class area all: the comprehensive line loss per unit of low voltage electric network, < 4%, qualified；> 4%, defective。B class area: the comprehensive line loss per unit of low voltage electric network, < 6%, qualified；> 6%, defective。C class area: the comprehensive line loss per unit of low voltage electric network, < 8%, qualified；> 8%, defective。Low voltage electric network loss qualification rate index value takes correspondingly sized score value according to its value size。Such as, if low voltage electric network proportion of goods damageds qualification rate is 85%, its value takes 85 points；If low voltage electric network loss qualification rate is 90%, its value takes 90 points；The rest may be inferred obtains the interpolation calculation formula of low voltage electric network loss qualification rate index value。

And then, in step s 103, each target area score value of rule layer in described power distribution network energy efficiency evaluation index system is obtained according to described fractional value。

Specifically, this step includes:

First, adopt analytic hierarchy process (AHP) to determine the weight of indicator layer in described power distribution network energy efficiency evaluation index system；

The second, the judgment matrix constituted by fractional value corresponding with each desired value in each target area and the multiplied by weight of indicator layer in described power distribution network energy efficiency evaluation index system, obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system。

The judgment matrix that in each target area described, the fractional value corresponding with each desired value is constituted is:

If certain layer of index is F=[f₁,f₂,f₃......f_n]；Compare f between two_iWith f_jCertain index of upper strata affected significance level, with f_ij=f_i/f_jRepresent, m_ijValue numeral 1～9 and inverse represent, namely representing by the scale in AHP, scale implication is in Table 3。

The scale implication of table 3AHP

mi jValue	Implication
		1	fiWith fjOf equal importance
3	fiCompare fjSlightly important
		5	fiCompare fjSubstantially important
7	fiCompare fjStrongly important
		9	fiCompare fjOf crucial importance
2,4,6,8	Represent the intermediate value of above-mentioned adjacent judgement
		Reciprocal	The ratio of index j and index i importance is fji=1/fij

Being finally constituted judgment matrix M, in matrix, the definition of element is as follows:

$M=\left\{\begin{array}{c}{m}_{ij}=f_i/f_j,i\&NotEqual;j\\ m_{ji}=1/m_{ij},i\&NotEqual;j\\ 1,i=j\end{array}\right.---\left(1\right)$

Wherein, M is described judgment matrix, and i, j are the ordinal number of desired value, f in indicator layer_iAnd f_jRespectively corresponding with i-th desired value in target area fractional value and fractional value corresponding to jth desired value, j=1,2 ... ..n, m_ij> 0。

Hierarchical ranking and consistency check:

After judgment matrix (being also monolayer judgment matrix) structure, calculate and judge M eigenvalue of maximum λ_maxAnd characteristic of correspondence vector ξ, then by characteristic vector normalized, it is thus achieved that with the layer each evaluation index sequencing weight relative to a certain index importance in upper strata, this process is Mode of Level Simple Sequence。The judgment matrix of structure should carry out consistency check。

The consistency ration C of judgment matrix_RBy coincident indicator C₁With Aver-age Random Consistency Index R₁Ratio determine, work as C_RDuring < 0.1, then the concordance of judgment matrix is at zone of reasonableness, otherwise tackles it and is modified。

Wherein, C₁=(λ_max-n)/(n-1), C_R=C₁/R₁。Judgment matrix exponent number being not more than to 2 has had crash consistency, it is not necessary to carry out consistency check again。For obtaining each index of the bottom for the weight order of general objective, also should calculating total hierarchial sorting, Mode of Level Simple Sequence weight should be synthesized by total weight order from top to bottom。Total hierarchial sorting also needs to do consistency check, and the method for inspection is ibid。

In step S104, obtain the comprehensive scores of the solution layer of the power distribution network of each target area according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system；

Specifically, this step includes:

Analytic hierarchy process (AHP) is adopted to determine the weight of rule layer in described power distribution network energy efficiency evaluation index system；

By described judgment matrix and the multiplied by weight of rule layer in described power distribution network energy efficiency evaluation index system, obtain the comprehensive scores of the solution layer of the power distribution network of each target area。

Above-mentioned two step is concretely: being calculated, by AHP (analytic hierarchy process (AHP)), the weight (namely each layer index is relative to the weight of last layer index) obtaining rule layer in described power distribution network energy efficiency evaluation index system is W=[w₁,w₂,w₃,w₄,......w_n], each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system is S=[s₁,s₂,s₃......,s_n]^T, then the comprehensive scores of the solution layer of the power distribution network of each target area is:

$V=WS=\underset{i=1}{\overset{n}{\&Sigma;}}{w}_i{s}_i.$

Hereinafter the weight of each index of P layer of target area is only listed, in Table 4。(note: obviously in table, each index weights sum of P layer is 1)

The each index weights of table 4P layer

According to above-mentioned, it is thus achieved that the comprehensive scores of the solution layer of the power distribution network in I region and II region is in Table 5 and table 6。

Table 5I regional distribution network comprehensive scores

Table 6II regional distribution network comprehensive scores

Wherein, 0 layer of aggregative indicator must be divided into the comprehensive scores of solution layer, and A layer index is indicator layer index, and B layer index is rule layer index。

In step S105, the solution layer comprehensive scores of the power distribution network of each target area described is ranked up according to ascending order；

In step s 106, according to ranking results, it is determined that target area to be rebuilt。

After described step S106, described method also includes: step S201；

In step s 201, calculate indices value and the difference of same desired value in other target areas of the power distribution network of described target area to be rebuilt, form multiple difference；Wherein, other target areas described are the target area in each target area described except described target area to be rebuilt；

In step S202, the plurality of difference is ranked up；

In step S203, according to ranking results, it is determined that the power distribution network of described target area to be rebuilt damage factor drops。

Contrast table 5, that table 6, II region O layer aggregative indicator obtains proportion by subtraction I region is low 9.0043 points, and therefore II region is region to be rebuilt, preferentially II region should be carried out energy-conservation technological transformation。Contrast the A layer index score value in two regions it can be seen that the score value of II region a3 differs maximum with the score value of I region a3, about low 5.73 points, it was shown that low voltage electric network (a3) is the emphasis that efficiency promotes。Then two B layer index (b7, b8, b9) score values corresponding for region a3 are contrasted further, known II region b7 index score value differs maximum with I region b7 index score value, about low 3.56 points, it was shown that in low voltage electric network, Static State Index (b7) is the emphasis that efficiency promotes。Contrast two P layer index score value corresponding for region b7 again, see following table。

As seen from the above table, low-voltage circuit radius of electricity supply qualification rate p23 is that II zone index layer differs maximum with I region, is next followed successively by low voltage electric network novel energy-conserving wire accounting p25, low voltage electric network backbone averga cross section qualification rate p24, accesses low voltage electric network distributed power source capacity accounting p27。The service conductor averga cross section qualification rate p26 index in II region is better than I region, therefore without considering this index。

Therefore, the emphasis of energy-conservation technological transformation should be placed in the adjustment of low voltage electric network, specifically can II region wire radius of electricity supply be optimized, change the low pressure backbone meeting sectional area requirement simultaneously, change novel conductive wire, promote the distributed power source capacity accessing low voltage electric network, to promote power distribution network efficiency level。

The present invention can represent the loss distribution situation of equipment component and running thereof。The sequence of the solution layer comprehensive scores according to the power distribution network to each target area described can accurately be found out efficiency and promote emphasis, contributes to the reasonable disposition of fund for technical innovation and the enforcement of distribution network planning and Energy-saving Projects。

Above-described embodiment is to two target areas belonging to A, B difference powered types, is also applied for other powered types such as C, D, E。

The structural representation damaging Potential Evaluation device drops in Fig. 2 for the power distribution network that one embodiment of the invention provides。

Damage Potential Evaluation device drops in a kind of power distribution network as shown in Figure 2, including:

Desired value acquiring unit 201, obtains the indices value of the power distribution network of each target area, and described desired value respectively refers to target value in indicator layer for each target area in power distribution network energy efficiency evaluation index system；

Marking unit 202, gives a mark to indices value according to the scoring criterion of each default index, obtains fractional value corresponding with each desired value in each target area；

Rule layer score value acquiring unit 203, obtains each target area score value of rule layer in described power distribution network energy efficiency evaluation index system according to described fractional value；

Comprehensive scores acquiring unit 204, obtains the comprehensive scores of the solution layer of the power distribution network of each target area according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system；

First sequencing unit 205, is ranked up the solution layer comprehensive scores of the power distribution network of each target area described according to ascending order；

Unit 206 is determined in target area to be rebuilt, according to ranking results, it is determined that target area to be rebuilt。

As a kind of preferred embodiment, described device also includes:

Difference acquiring unit, according to ranking results, it is determined that after target area to be rebuilt, calculates indices value and the difference of same desired value in other target areas of the power distribution network of described target area to be rebuilt, forms multiple difference；Wherein, other target areas described are the target area in each target area described except described target area to be rebuilt；

Second sequencing unit, is ranked up the plurality of difference；

Damage factor acquiring unit drops, according to ranking results, it is determined that the power distribution network of described target area to be rebuilt damage factor drops。

As a kind of preferred embodiment, described device also includes:

Power distribution network energy efficiency evaluation index system sets up unit, before obtaining the indices value of power distribution network of each target area, according to power distribution network integrated planning, run present situation, set up a set of power distribution network energy efficiency evaluation index system from medium-voltage line, distribution transformer, low voltage electric network aspect。

As a kind of preferred embodiment, rule layer score value acquiring unit 203, it is additionally operable to,

Analytic hierarchy process (AHP) is adopted to determine the weight of indicator layer in described power distribution network energy efficiency evaluation index system；

The judgment matrix constituted by fractional value corresponding with each desired value in each target area and the multiplied by weight of indicator layer in described power distribution network energy efficiency evaluation index system, obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system。

Due to a kind of power distribution network in the present invention damage Potential Evaluation device drops and a kind of power distribution network to drop damage potential evaluation method be one to one, therefore be not described in detail in this this device。

Should be noted that, in all parts of assembly of the invention, according to its function to realize, parts therein are carried out logical partitioning, but, the present invention is not only restricted to this, it is possible to as required all parts is repartitioned or combines, for instance, can be single parts by some unit constructions, or some parts can be further broken into more subassembly。

The all parts embodiment of the present invention can realize with hardware, or realizes with the software module run on one or more processor, or realizes with their combination。It will be understood by those of skill in the art that the some or all functions that microprocessor or digital signal processor (DSP) can be used in practice to realize the some or all parts in system according to embodiments of the present invention。The present invention is also implemented as part or all the equipment for performing method as described herein or device program (such as, computer program and computer program)。The program of such present invention of realization can store on a computer-readable medium, or can have the form of one or more signal。Such signal can be downloaded from internet website and obtain, or provides on carrier signal, or provides with any other form。

The present invention will be described rather than limits the invention to it should be noted above-described embodiment, and those skilled in the art can design alternative embodiment without departing from the scope of the appended claims。In the claims, any reference marks that should not will be located between bracket is configured to limitations on claims。Word " comprises " and does not exclude the presence of the element or step not arranged in the claims。Word "a" or "an" before being positioned at element does not exclude the presence of multiple such element。The present invention by means of including the hardware of some different elements and can realize by means of properly programmed computer。In the unit claim listing some devices, several in these devices can be through same hardware branch and specifically embody。Word first, second and third use do not indicate that any order。Can be title by these word explanations。

Embodiment of above is only suitable to the present invention is described; and it is not limitation of the present invention; those of ordinary skill about technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes fall within scope of the invention, and the scope of patent protection of the present invention should be defined by the claims。

Claims (10)

1. damage potential evaluation method drops in a power distribution network, it is characterised in that including:

Obtaining the indices value of the power distribution network of each target area, described desired value respectively refers to target value in indicator layer for each target area in power distribution network energy efficiency evaluation index system；

Indices value is given a mark by the scoring criterion according to each default index, obtains fractional value corresponding with each desired value in each target area；

Each target area score value of rule layer in described power distribution network energy efficiency evaluation index system is obtained according to described fractional value；

The comprehensive scores of the solution layer of the power distribution network of each target area is obtained according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system；

The solution layer comprehensive scores of the power distribution network of each target area described is ranked up according to ascending order；

According to ranking results, it is determined that target area to be rebuilt。

2. damage potential evaluation method drops in power distribution network according to claim 1, it is characterised in that according to ranking results, it is determined that after target area to be rebuilt, and described method also includes:

Calculate indices value and the difference of same desired value in other target areas of the power distribution network of described target area to be rebuilt, form multiple difference；Wherein, other target areas described are the target area in each target area described except described target area to be rebuilt；

The plurality of difference is ranked up；

According to ranking results, it is determined that the power distribution network of described target area to be rebuilt damage factor drops。

3. damage potential evaluation method drops in power distribution network according to claim 1, it is characterised in that before obtaining the indices value of power distribution network of each target area, described method also includes:

According to power distribution network integrated planning, run present situation, set up a set of power distribution network energy efficiency evaluation index system from medium-voltage line, distribution transformer, low voltage electric network aspect。

4. damage potential evaluation method drops in power distribution network according to claim 1, it is characterised in that described obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system according to described fractional value, specifically includes:

Analytic hierarchy process (AHP) is adopted to determine the weight of indicator layer in described power distribution network energy efficiency evaluation index system；

The judgment matrix constituted by fractional value corresponding with each desired value in each target area and the multiplied by weight of indicator layer in described power distribution network energy efficiency evaluation index system, obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system。

5. damage potential evaluation method drops in power distribution network according to claim 4, it is characterized in that, obtain the comprehensive scores of the solution layer of the power distribution network of each target area according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system, specifically include:

Analytic hierarchy process (AHP) is adopted to determine the weight of rule layer in described power distribution network energy efficiency evaluation index system；

By described judgment matrix and the multiplied by weight of rule layer in described power distribution network energy efficiency evaluation index system, obtain the comprehensive scores of the solution layer of the power distribution network of each target area。

6. damage potential evaluation method drops in the power distribution network according to claim 4 or 5, it is characterised in that the judgment matrix that in each target area described, the fractional value corresponding with each desired value is constituted is:

$M=\left\{\begin{array}{c}{m}_{ij}=f_i/f_j,i\&NotEqual;j\\ m_{ij}=1/m_{ij},i\&NotEqual;j\\ 1,i=j\end{array}\right.$

Wherein, M is described judgment matrix, and i, j are the ordinal number of desired value, f in indicator layer_iAnd f_jRespectively corresponding with i-th desired value in target area fractional value and fractional value corresponding to jth desired value。

7. damage Potential Evaluation device drops in a power distribution network, it is characterised in that including:

Desired value acquiring unit, obtains the indices value of the power distribution network of each target area, and described desired value respectively refers to target value in indicator layer for each target area in power distribution network energy efficiency evaluation index system；

Marking unit, gives a mark to indices value according to the scoring criterion of each default index, obtains fractional value corresponding with each desired value in each target area；

Rule layer score value acquiring unit, obtains each target area score value of rule layer in described power distribution network energy efficiency evaluation index system according to described fractional value；

Comprehensive scores acquiring unit, obtains the comprehensive scores of the solution layer of the power distribution network of each target area according to each target area described score value of rule layer in described power distribution network energy efficiency evaluation index system；

First sequencing unit, is ranked up the solution layer comprehensive scores of the power distribution network of each target area described according to ascending order；

Unit is determined in target area to be rebuilt, according to ranking results, it is determined that target area to be rebuilt。

8. device according to claim 7, it is characterised in that described device also includes:

Difference acquiring unit, according to ranking results, it is determined that after target area to be rebuilt, calculates indices value and the difference of same desired value in other target areas of the power distribution network of described target area to be rebuilt, forms multiple difference；Wherein, other target areas described are the target area in each target area described except described target area to be rebuilt；

Second sequencing unit, is ranked up the plurality of difference；

Damage factor acquiring unit drops, according to ranking results, it is determined that the power distribution network of described target area to be rebuilt damage factor drops。

9. device according to claim 7, it is characterised in that described device also includes:

Power distribution network energy efficiency evaluation index system sets up unit, before obtaining the indices value of power distribution network of each target area, according to power distribution network integrated planning, run present situation, set up a set of power distribution network energy efficiency evaluation index system from medium-voltage line, distribution transformer, low voltage electric network aspect。

10. device according to claim 7, it is characterised in that rule layer score value acquiring unit, is additionally operable to,

Analytic hierarchy process (AHP) is adopted to determine the weight of indicator layer in described power distribution network energy efficiency evaluation index system；

The judgment matrix constituted by fractional value corresponding with each desired value in each target area and the multiplied by weight of indicator layer in described power distribution network energy efficiency evaluation index system, obtain each target area score value of rule layer in described power distribution network energy efficiency evaluation index system。