CN107563591A - A kind of regional distribution network based on unit style builds priority computational methods - Google Patents
A kind of regional distribution network based on unit style builds priority computational methods Download PDFInfo
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- CN107563591A CN107563591A CN201710635836.2A CN201710635836A CN107563591A CN 107563591 A CN107563591 A CN 107563591A CN 201710635836 A CN201710635836 A CN 201710635836A CN 107563591 A CN107563591 A CN 107563591A
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Abstract
The invention discloses a kind of regional distribution network based on unit style to build priority computational methods, comprises the following steps：Step 1: regional distribution network to be built is divided into several power supply units；Step 2: the significant coefficient index system and construction demand coefficient index system of power supply unit are built respectively；Step 3: significant coefficient index weights and construction demand coefficient index weights using AHP analytic hierarchy process (AHP)s, respectively determination power supply unit；Utilize the significant coefficient index score and construction demand coefficient index score of membership function, respectively calculating power supply unit；Step 4: significant coefficient I and construction demand coefficient D according to respective index weights and index score, respectively calculating power supply unit；Step 5: the construction priority factor P of power supply unit is calculated according to below equation.Combining unit prcgramming ideas of the present invention, using unit as object, the evaluation system of a set of power supply unit is established, the priority of quantitative analysis unit, substantially increases power distribution network precision construction investment level.
Description
Technical field
The present invention relates to distribution network construction technical field, and in particular to a kind of regional distribution network based on unit style is built excellent
First level computational methods.
Background technology
At present, distribution network construction investment carries out Investment Allocation by the way of plate is divided, and lacks the foundation of science, easily makes
Into investment waste.Develop new situations in face of power distribution network, it is necessary to power distribution network investment is optimized, to improve the warp of power grid enterprises
Ji benefit.
The content of the invention
The invention discloses a kind of regional distribution network based on unit style to build priority computational methods, can be that power network is looked forward to
The distribution network construction of industry provides the foundation of science, improves the economic benefit of power grid enterprises.
The present invention is achieved through the following technical solutions：
A kind of regional distribution network based on unit style builds priority computational methods, comprises the following steps：
Step 1: regional distribution network to be built is divided into several power supply units；
Step 2: the significant coefficient index system and construction demand coefficient index system of power supply unit are built respectively；
Step 3: significant coefficient index weights and construction demand coefficient using AHP analytic hierarchy process (AHP)s, respectively determination power supply unit
Index weights；Utilize the significant coefficient index score and construction demand coefficient index of membership function, respectively calculating power supply unit
Score；
Step 4: significant coefficient I and construction demand according to respective index weights and index score, respectively calculating power supply unit
Coefficient D；
Step 5: the construction priority factor P of power supply unit is calculated according to below equation：
P=α × D+ β × I,
Alpha+beta=1,
Wherein, α is the destination layer weight of construction demand coefficient, and β is the destination layer weight of significant coefficient.
The further scheme of the present invention is that step 1 is advised in detail according to region and distant view yearly peak load result, specifies power transformation
Stand supply district, target net, regional distribution network to be built is divided into several power supply units by reference unit division principle.
The further scheme of the present invention is that the dividing elements principle includes：
A. each power supply unit at least has two power supply points, and power supply point is nearest from power supply unit；
B. demarcate along Regional Road Network or planned road network or naturally and divided；
C. circuit returns number less than or equal to 12 times in power supply unit.
Step 1 is by after the regional distribution network built is divided into several power supply units, according to phase also in power supply unit
The power supply quality demand answered builds target net form, and the rule of middle transition year and recent rack are carried out according to target net
Draw, draw the project table in units of group.
The further scheme of the present invention is that power supply unit significant coefficient index system covers social influence and warp in step 2
Help two datum layers of benefit, and wherein social influence includes three load density, unit area number of users and responsible consumer ratio fingers
Layer is marked, economic benefit includes delivery and average electricity price level two indices layer.
The further scheme of the present invention is that power supply unit construction demand coefficient index system covers power network power supply in step 2
Four quality, technical equipment, operation level and power supply safety datum layers；The grid supply quality includes power supply reliability and electricity
Qualification rate two indices layer is pressed, technical equipment, which includes, matches somebody with somebody from coverage rate, cable rate, insulation rate and old equipment ratio four
Indicator layer, operation level includes circuit Rate of average load, circuit overloads ratio again and circuit three fingers of average attaching capacity of distribution transform
Layer is marked, power supply safety includes one indicator layer of circuit " N-1 " percent of pass.
The further scheme of the present invention is that the index weights of step 3 and step 4 include datum layer weight and indicator layer is weighed
Weight.
The present invention compared with prior art the advantages of be：
First, combining unit prcgramming ideas, using unit as object, the evaluation system of a set of power supply unit, quantitative analysis list are established
The priority of member, substantially increase power distribution network precision construction investment level；
2nd, districts and cities are applicable, the unit of county's company power distribution mesh mark space truss project preferably distributes with construction；On the one hand to this area
The significance level of each unit, construction demand are evaluated, and ginseng is provided for this area electric company distribution network construction, Investment Allocation
Examine, the scientific and reasonable arrangement distribution network construction project in the case of limited investment amount, avoid the blindness of distribution network construction
Investment, guide the high-quality fast development of power distribution network；On the other hand, the closed loop management flow of distribution network planning work is improved, by local area
The strategic objective that domain electric company builds " intelligence, efficiently, reliable, green, economic " power network is decomposed and quantified to tangible micro-
Index is seen, so as to improve the development level of this area power distribution network, realizes that the construction of power distribution network is changed from extensive style to intensive style,
Corporate economy's benefit is improved under the requirement of new electric reshaping gesture.
Brief description of the drawings
Fig. 1 is the flow chart that power supply unit is divided in the present invention.
Fig. 2 is the significant coefficient index system figure of power supply unit in the present invention.
Fig. 3 is the construction demand coefficient index system figure of power supply unit in the present invention.
Embodiment
A kind of regional distribution network based on unit style builds priority computational methods, comprises the following steps：
Step 1: as shown in figure 1, advised in detail according to region and distant view yearly peak load result, transformer station's supply district, target are specified
Rack, regional distribution network to be built is divided into several power supply units by reference unit division principle, then in power supply unit
Target net form is built according to corresponding power supply quality demand, middle transition year and recent rack are carried out according to target net
Planning, draw the project table in units of group；The dividing elements principle includes：
A. each power supply unit at least has two power supply points, and power supply point is nearest from power supply unit；
B. demarcate along Regional Road Network or planned road network or naturally and divided；
C. circuit returns number less than or equal to 12 times in power supply unit.
Step 2: the significant coefficient index system of power supply unit as shown in Figure 2 and construction as shown in Figure 3 are built respectively
Service demand factor index system；
Power supply unit significant coefficient index system covers two datum layers of social influence and economic benefit, and wherein social influence includes
Three load density, unit area number of users and responsible consumer ratio indicator layers, economic benefit include delivery and average electricity price
Horizontal two indices layer；
Power supply unit construction demand coefficient index system covers grid supply quality, technical equipment, operation level and power supply safety
Four datum layers；The grid supply quality includes power supply reliability and rate of qualified voltage two indices layer, technical equipment include
With from coverage rate, cable rate, insulation four indicator layers of rate and old equipment ratio, operation level includes circuit average load
Rate, circuit overload ratio and average attaching three indicator layers of capacity of distribution transform of circuit again, and power supply safety includes circuit " N-1 " percent of pass
One indicator layer.
Step 3: significant coefficient index weights and construction demand using AHP analytic hierarchy process (AHP)s, respectively determination power supply unit
Coefficient index weights, index weights include datum layer weight and indicator layer weight；
The significant coefficient index weights of certain power supply unit are：
The construction demand coefficient index weights of the power supply unit are：
Membership function is recycled, the significant coefficient index score of power supply unit is calculated respectively and construction demand coefficient index obtains
Point；
The significant coefficient index of the power supply unit is scored at：
Illustrate index scoring process by taking load density as an example：
It is fitted using the linear membership function of trapezoidal profile, it is first determined the bound of index, i.e.,：Degree of membership threshold values, provides phase
Parameter is answered, such as：
| Load density（MW/km²） | 0 | 0.1 | 1 | 6 | 15 |
| Score | 0 | 20 | 40 | 80 | 100 |
Determine that the linear membership function formula of trapezoidal profile is further according to parameter：
,
Wherein f is score, and x is load density target；
When the load density of the power supply unit is 11.4MW/km2When, it is 92 points that corresponding scoring, which can be calculated,.
The construction demand coefficient index of the power supply unit is scored at：
Step 4: significant coefficient I and construction demand according to respective index weights and index score, respectively calculating power supply unit
Coefficient D；
The significant coefficient I of the power supply unit of the present embodiment is：
0.5*（0.24*92+0.17*83+0.19*80）+0.5*（0.28*87+0.12*84）=36.415；
Construction demand coefficient D is：
0.2*（0.5*85+0.5*96）+0.3*（0.3*97+0.15*82+0.25*80+0.3*77）+0.3*（0.35*84+0.4*
73+0.25*81）+0.2*79=82.905；
Step 5: the construction priority factor P of power supply unit is calculated according to below equation：
P=α × D+ β × I,
Alpha+beta=1,
Wherein, α is the destination layer weight of construction demand coefficient, and β is the destination layer weight of significant coefficient, and α, β value are by expertise
Given, between α values preferably take 0.2 ~ 0.3, β value is preferably taken between 0.7 ~ 0.8.
Claims (7)
1. a kind of regional distribution network based on unit style builds priority computational methods, it is characterised in that comprises the following steps：
Step 1: regional distribution network to be built is divided into several power supply units；
Step 2: the significant coefficient index system and construction demand coefficient index system of power supply unit are built respectively；
Step 3: significant coefficient index weights and construction demand coefficient using AHP analytic hierarchy process (AHP)s, respectively determination power supply unit
Index weights；Utilize the significant coefficient index score and construction demand coefficient index of membership function, respectively calculating power supply unit
Score；
Step 4: significant coefficient I and construction demand according to respective index weights and index score, respectively calculating power supply unit
Coefficient D；
Step 5: the construction priority factor P of power supply unit is calculated according to below equation：
P=α × D+ β × I,
Alpha+beta=1,
Wherein, α is the destination layer weight of construction demand coefficient, and β is the destination layer weight of significant coefficient.
2. a kind of regional distribution network based on unit style as claimed in claim 1 builds priority computational methods, its feature exists
In：Step 1 is advised in detail according to region and distant view yearly peak load result, specifies transformer station's supply district, target net, with reference to single
Regional distribution network to be built is divided into several power supply units by first division principle.
3. a kind of regional distribution network based on unit style as claimed in claim 2 builds priority computational methods, its feature exists
In：The dividing elements principle includes：
A. each power supply unit at least has two power supply points, and power supply point is nearest from power supply unit；
B. demarcate along Regional Road Network or planned road network or naturally and divided；
C. circuit returns number less than or equal to 12 times in power supply unit.
4. a kind of regional distribution network based on unit style as claimed in claim 1 or 2 builds priority computational methods, its feature
It is：Step 1 is by after the regional distribution network built is divided into several power supply units, and foundation is corresponding also in power supply unit
Power supply quality demand build target net form, the planning of middle transition year and recent rack is carried out according to target net,
Draw the project table in units of group.
5. a kind of regional distribution network based on unit style as claimed in claim 1 builds priority computational methods, its feature exists
In：Power supply unit significant coefficient index system covers two datum layers of social influence and economic benefit in step 2, wherein society
Influence comprising load density, three indicator layers of unit area number of users and responsible consumer ratio, economic benefit include delivery and
The horizontal two indices layer of average electricity price.
6. a kind of regional distribution network based on unit style as claimed in claim 1 builds priority computational methods, its feature exists
In：Power supply unit construction demand coefficient index system covers grid supply quality, technical equipment, operation level and confession in step 2
Four datum layers of electric safety；The grid supply quality includes power supply reliability and rate of qualified voltage two indices layer, technology dress
It is standby comprising with being put down from coverage rate, cable rate, insulation four indicator layers of rate and old equipment ratio, operation level comprising circuit
Equal load factor, circuit overload ratio and average attaching three indicator layers of capacity of distribution transform of circuit again, and power supply safety includes circuit " N-1 "
One indicator layer of percent of pass.
7. a kind of regional distribution network based on unit style as claimed in claim 1 builds priority computational methods, its feature exists
In：The index weights of step 3 and step 4 include datum layer weight and indicator layer weight.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108694527A (en) * | 2018-08-09 | 2018-10-23 | 河海大学常州校区 | A kind of power distribution network evaluation method |
| CN109711750A (en) * | 2019-01-09 | 2019-05-03 | 国网宁夏电力有限公司 | A kind of power grid investment benefit Whole Process Simulation method and system |
| CN111724025A (en) * | 2020-04-26 | 2020-09-29 | 国网福建省电力有限公司 | High-voltage distribution network frame planning method based on power supply unit optimized division |
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| CN102930482A (en) * | 2012-11-30 | 2013-02-13 | 河北省电力公司电力科学研究院 | Investment effect evaluation method for county power distribution networks |
| CN105303259A (en) * | 2015-11-06 | 2016-02-03 | 国网上海市电力公司 | Gridding concept based power distribution network planning management method |
| CN105335810A (en) * | 2015-06-12 | 2016-02-17 | 国家电网公司 | Method for evaluating investment benefits of power distribution network individual projects |
| CN106503919A (en) * | 2016-11-03 | 2017-03-15 | 国家电网公司 | A kind of power distribution network evaluation methodology based on power supply zone characteristic |
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2017
- 2017-07-31 CN CN201710635836.2A patent/CN107563591A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930482A (en) * | 2012-11-30 | 2013-02-13 | 河北省电力公司电力科学研究院 | Investment effect evaluation method for county power distribution networks |
| CN105335810A (en) * | 2015-06-12 | 2016-02-17 | 国家电网公司 | Method for evaluating investment benefits of power distribution network individual projects |
| CN105303259A (en) * | 2015-11-06 | 2016-02-03 | 国网上海市电力公司 | Gridding concept based power distribution network planning management method |
| CN106503919A (en) * | 2016-11-03 | 2017-03-15 | 国家电网公司 | A kind of power distribution network evaluation methodology based on power supply zone characteristic |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108694527A (en) * | 2018-08-09 | 2018-10-23 | 河海大学常州校区 | A kind of power distribution network evaluation method |
| CN108694527B (en) * | 2018-08-09 | 2021-07-13 | 河海大学常州校区 | Power distribution network evaluation method |
| CN109711750A (en) * | 2019-01-09 | 2019-05-03 | 国网宁夏电力有限公司 | A kind of power grid investment benefit Whole Process Simulation method and system |
| CN111724025A (en) * | 2020-04-26 | 2020-09-29 | 国网福建省电力有限公司 | High-voltage distribution network frame planning method based on power supply unit optimized division |
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Application publication date: 20180109 |