CN107169597A - A kind of distribution network planning method for considering construction cost, city benefits and the harmonious three dimensionality of power supply - Google Patents
A kind of distribution network planning method for considering construction cost, city benefits and the harmonious three dimensionality of power supply Download PDFInfo
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Abstract
The invention discloses a kind of distribution network planning method for considering transformer substation construction cost, city benefits and the harmonious three dimensionality of power supply the optimal distribution network planning method of city integrated benefit can be obtained there is provided a kind of.This method combination urban planning and Electric Power Network Planning correlation theory, based on the big data under Urban Planning Perspective, multiple-factor Vector Grid platform, the factor of influence that urban planning is laid out to electric power quantifies, and carries out electric power optimization allocation plan based on this platform.This method analyzes the target and mechanism of action of urban planning and power planning, both interactions of carrier parsing and influencing mechanism by city space, build simultaneous model, using construction cost, city benefits, balanced three dimensions of power supply as target, reach that the city overall efficiency of distribution network planning is optimal.
Description
Technical Field
The invention belongs to the technical field of power systems, and particularly relates to a three-dimensional power distribution network planning method comprehensively considering construction cost, urban benefit and power supply balance.
Background
The power distribution network planning is important early work for power grid construction, directly influences the network structure, power grid investment, economic operation and power grid reliability of a future power grid, and has very important significance for power grid construction. However, the traditional power distribution network planning is only a digital conceptual planning, planning and evaluation are performed through a digital physical and chemical logic model, effective connection with actual urban space is lacked, a large difference exists between actual implementation and planning, and problems of large cost budget deviation, lack of overall coordination between line routing and road and landscape systems and the like are caused. In addition, the traditional power grid planning adopts a planning mode that objects are invisible, the main consideration is the index of economic technology, and the consideration of the factors related to the use of people, such as activities, state density and the like of people is lacked; and the knowledge of the problems of the proximity effect of the power network and the like is lacked, so that a plurality of problems in the actual layout are caused.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the conventional power distribution network planning method, the invention provides the power distribution network planning method which can achieve the optimal overall urban benefit and balanced power supply by combining the urban planning and the relevant theory of power distribution network planning.
The technical scheme is as follows: the invention provides a power distribution network planning method comprehensively considering the urban overall benefit optimization and power supply balance, which considers the influence factors of the power facility layout on the urban planning overall based on urban planning geographic information, quantizes various factors and optimizes the power optimization layout based on the factors. The optimization target is that the overall efficiency of the city is optimal, and the traditional optimization only considers the power grid.
And dividing the area to be planned into a grid map for representing grid numbers. It is assumed that the same type of line and substation construction costs are the same in one grid.
According to the relevant theory of urban planning, multiple factors of urban planning are considered. Calculating city planning related factors influencing the layout of the electric power facilities, comprising the following steps:
(1) morphological structural factor: the method is characterized by representing the relation between a space form structure (prototype) and a power network form, researching the influence of the form structure on power layout, and converting the understanding of the space prototype into assignment to different roads and function areas.
(2) A behavioral activity factor: representing the relation between behavior and energy consumption, and researching the influence of human activities on the power layout.
(3) The functional factors of land: and the method represents different land functions and energy consumption, and researches the influence of the land functions on the power layout.
(4) The business association factor: expressing the relation between the state and the energy consumption, and researching the coupling between the state and the energy consumption
Based on the multi-factor vector grid platform, targets and action mechanisms of city planning and electric power planning are analyzed, interaction and influence mechanisms of the urban planning and electric power planning are analyzed through a carrier of an urban space, and a power distribution network planning combined model under the following urban planning visual angles is established:
a. objective function
Based on the vector grid platform, three dimensions of construction cost, urban comprehensive cost and power supply balance of traditional power distribution network planning are used as a combined objective function, so that the overall urban benefit is maximized, and the expression is as follows:
wherein i represents the grid number, N is the number of the multi-factor vector grids, and the specific expression of each F is as follows:
1) construction cost dimension CFi：
CFi＝C1i+C2i+C3i
Wherein, CFiRepresenting the economic cost of traditional power distribution network planning. C1iConverting the investment and operation cost of the transformer substation to annual cost; c2iThe investment cost of the low-voltage side line of the transformer substation is converted into annual investment cost; c3iThe annual network loss cost of the low-voltage side line of the transformer substation is saved.
eiA variable of 0-1, representing whether a substation is built on grid i, ei1 denotes "build substation on grid i", ei0 denotes that "no substation is built on grid i"; siIs the capacity of substation i; r is0The current rate is the current rate; t is t1The life of the substation is built for the requirement; t is t2The service life of the low-voltage side line of the transformer substation is built; g (e)iSi) And u (e)iSi) The investment and the operation cost of the transformer substation to be built are respectively α, β is a feeder line loss factor;the distance between the transformer substation i and the load point j is calculated; wjIs the load at load point j; j. the design is a squareiAll load points supplied by grid i.
2) Urban benefit vitamin CUi：
CUi＝eiTi
Wherein T isiAnd the urban comprehensive cost for building the transformer substation on the grid i is obtained by the multi-factor vector grid platform.
Wherein, ηtWeight of the factor t representing the influence of the construction of the electric power facility on the urban comprehensive benefits, EitA quantized value representing the t factor of grid i; and m represents the number of urban comprehensive benefit influence factors.
3) Power supply balance dimension CBi：
Wherein C isBiAnd the balance relation between the substation site and the load distribution is shown. Wherein M (S)i) Representative load factor:
where σ denotes the load density of the power supply region, dmaxRepresenting the maximum allowable power supply radius.
b. Constraint conditions
1) Capacity constraints for transformer substation
Wherein,representing the power factor, rtRepresenting the coincidence rate.
2) Supply radius constraints
dij≤dmax
The method combines the relevant theories of city planning and power grid planning, quantifies the influence factors of the city planning on the electric power layout based on a big data and multi-factor vector grid platform under the view angle of the city planning, and carries out the electric power optimized layout planning based on the platform. The method analyzes the targets and action mechanisms of urban planning and electric power planning, analyzes the interaction and influence mechanisms of the urban planning and electric power planning through a carrier of an urban space, constructs a simultaneous model, and achieves the optimal urban overall benefit of power distribution network planning by taking three dimensions of construction cost, urban benefit and power supply balance as targets.
Detailed Description
The present invention is explained further below.
The invention provides a power distribution network planning method comprehensively considering the urban overall benefit optimization, which comprises the following specific steps:
(1) and acquiring the spatial form structure, the mobile phone signaling, the energy consumption, the land form and the business form data of the area to be planned. And obtaining big data and multi-factor vector grids under the view angle of the city planning, and numbering each grid.
(2) Based on the vector grids, three dimensions of construction cost dimension, urban benefit dimension and power supply balance dimension of power distribution network planning are comprehensively considered.
(3) Maintenance of construction cost: the construction cost problem of the transformer substation in the power distribution network planning is considered based on the grid platform, and the construction cost problem comprises investment and operation cost of the transformer substation if the transformer substation is constructed on each grid, investment cost of low-voltage side lines of the transformer substation and annual network loss cost of the low-voltage side lines of the transformer substation.
(4) Urban benefit maintenance: and considering the urban comprehensive cost for building the transformer substation based on the grid platform, and combining the influence factors of the urban planning on the power distribution network planning, including morphological structure, behavior activity, land function factor and business state association factor to obtain the urban comprehensive cost of each grid if the transformer substation needs to be built.
(5) And (3) power supply balance maintenance: and considering the power supply balance of the whole planning area based on the grid platform. And defining power supply balance through the load rate so as to achieve balance of substation capacity distribution and load distribution in the region.
(6) Based on the three dimensions, a power distribution network planning model with optimal urban comprehensive benefits is established, substation sites and capacities meeting conditions are obtained, and power distribution network planning is achieved.
And dividing the area to be planned into a grid map for representing grid numbers. It is assumed that the same type of line and substation construction costs are the same in one grid.
According to the relevant theory of urban planning, multiple factors of urban planning are considered. Calculating city planning related factors influencing the layout of the electric power facilities, comprising the following steps:
morphological structural factor: the method is characterized by representing the relation between a space form structure (prototype) and a power network form, researching the influence of the form structure on power layout, and converting the understanding of the space prototype into assignment to different roads and function areas.
A behavioral activity factor: representing the relation between behavior and energy consumption, and researching the influence of human activities on the power layout.
The functional factors of land: and the method represents different land functions and energy consumption, and researches the influence of the land functions on the power layout.
The business association factor: expressing the relation between the state and the energy consumption, and researching the coupling of the state and the energy consumption.
Based on the multi-factor vector grid platform, targets and action mechanisms of city planning and electric power planning are analyzed, interaction and influence mechanisms of the urban planning and electric power planning are analyzed through a carrier of an urban space, and a power distribution network planning combined model under the following urban planning visual angles is established:
a. objective function
Based on the vector grid platform, three dimensions of construction cost, urban comprehensive cost and power supply balance of traditional power distribution network planning are used as a combined objective function, so that the overall urban benefit is maximized, and the expression is as follows:
wherein i represents the grid number, N is the number of the multi-factor vector grids, and the specific expression of each F is as follows:
(1) construction cost dimension CFi：
CFi＝C1i+C2i+C3i
Wherein, CFiRepresenting the economic cost of traditional power distribution network planning. C1iConverting the investment and operation cost of the transformer substation to annual cost; c2iThe investment cost of the low-voltage side line of the transformer substation is converted into annual investment cost; c3iThe annual network loss cost of the low-voltage side line of the transformer substation is saved.
eiA variable of 0-1, representing whether a substation is built on grid i, ei1 denotes "build substation on grid i", ei0 denotes that "no substation is built on grid i"; siIs the capacity of substation i; r is0The current rate is the current rate; t is t1The life of the substation is built for the requirement; t is t2The service life of the low-voltage side line of the transformer substation is built; g (e)iSi) And u (e)iSi) The investment and the operation cost of the transformer substation to be built are respectively α, β is a feeder line loss factor;the distance between the transformer substation i and the load point j is calculated; wjIs the load at load point j; j. the design is a squareiAll load points supplied by grid i.
(2) Urban benefit vitamin CUi：
CUi＝eiTi
Wherein T isiAnd the urban comprehensive cost for building the transformer substation on the grid i is obtained by the multi-factor vector grid platform.
Wherein, ηtComprehensive device for representing electric power facility construction to cityWeight of the resultant influencing factor t, EitA quantized value representing the t factor of grid i; and m represents the number of urban comprehensive benefit influence factors.
(3) Power supply balance dimension CBi：
Wherein C isBiAnd the balance relation between the substation site and the load distribution is shown. Wherein M (S)i) Representative load factor:
where σ denotes the load density of the power supply region, dmaxRepresenting the maximum allowable power supply radius.
b. Constraint conditions
(1) Capacity constraints for transformer substation
Wherein,representing the power factor, rtRepresenting the coincidence rate.
(2) Supply radius constraints
dij≤dmax。
Claims (3)
1. A power distribution network planning method comprehensively considering three dimensions of construction cost, urban benefit and power supply balance is characterized in that the three dimensions of the construction cost, the urban benefit and the power supply balance are comprehensively considered under an urban planning visual angle, a grid platform under the urban planning visual angle is obtained based on urban planning geographic information, influence factors of electric power facility layout on the urban planning whole are considered, various factors are quantized, and electric power layout optimization is carried out based on the grid platform.
2. A planning method according to claim 1, characterized in that the influencing factors comprise:
(1) morphological structural factor: the method is characterized by representing the relation between a space form structure (prototype) and a power network form, researching the influence of the form structure on power layout, and converting the understanding of the space prototype into assignment to different roads and function areas.
(2) A behavioral activity factor: representing the relation between behavior and energy consumption, and researching the influence of human activities on the power layout.
(3) The functional factors of land: and the method represents different land functions and energy consumption, and researches the influence of the land functions on the power layout.
(4) The business association factor: expressing the relation between the state and the energy consumption, and researching the coupling of the state and the energy consumption.
3. The planning method according to claim 1 or 2, wherein targets and mechanisms of action of city planning and power planning are analyzed based on the multi-factor vector grid platform, and a joint model of power distribution network planning under the following city planning view angle is established by analyzing the interaction and influence mechanism of the two through a carrier of a city space:
a. objective function
Based on the vector grid platform, three dimensions of construction cost, urban comprehensive cost and power supply balance of traditional power distribution network planning are used as a combined objective function, so that the overall urban benefit is maximized, and the expression is as follows:
wherein i represents the grid number, N is the number of the multi-factor vector grids, and the specific expression of each F is as follows:
1) construction cost dimension CFi：
CFi＝C1i+C2i+C3i
Wherein, CFiRepresenting the economic cost of traditional power distribution network planning. C1iConverting the investment and operation cost of the transformer substation to annual cost;C2ithe investment cost of the low-voltage side line of the transformer substation is converted into annual investment cost; c3iThe annual network loss cost of the low-voltage side line of the transformer substation is saved.
eiA variable of 0-1, representing whether a substation is built on grid i, ei1 denotes "build substation on grid i", ei0 denotes that "no substation is built on grid i"; siIs the capacity of substation i; r is0The current rate is the current rate; t is t1The life of the substation is built for the requirement; t is t2The service life of the low-voltage side line of the transformer substation is built; g (e)iSi) And u (e)iSi) The investment and the operation cost of the transformer substation to be built are respectively α, β is a feeder line loss factor;the distance between the transformer substation i and the load point j is calculated; wjIs the load at load point j; j. the design is a squareiAll load points supplied by grid i.
2) Urban benefit vitamin CUi：
CUi＝eiTi
Wherein T isiAnd the urban comprehensive cost for building the transformer substation on the grid i is obtained by the multi-factor vector grid platform.
Wherein, ηtWeight of the factor t representing the influence of the construction of the electric power facility on the urban comprehensive benefits, EitA quantized value representing the t factor of grid i; and m represents the number of urban comprehensive benefit influence factors.
3) Power supply balance dimension CBi：
Wherein C isBiAnd the balance relation between the substation site and the load distribution is shown. Wherein M (S)i) Representative load factor:
where σ denotes the load density of the power supply region, dmaxRepresents a maximum allowable power supply radius;
b. constraint conditions
1) Capacity constraints for transformer substation
Wherein,representing the power factor, rtRepresenting the coincidence rate.
2) Supply radius constraints
dij≤dmax。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107563571A (en) * | 2017-09-26 | 2018-01-09 | 国网安徽省电力公司合肥供电公司 | A kind of electric power facility is laid out automatic planning |
| CN112686480A (en) * | 2021-03-17 | 2021-04-20 | 国网浙江省电力有限公司 | Cost estimation system and method based on standard cost system |
| CN113343426A (en) * | 2021-05-11 | 2021-09-03 | 山东大学 | Urban distribution network line gauge method and system considering real demand guidance |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103489076A (en) * | 2013-09-30 | 2014-01-01 | 国家电网公司 | Method for planning substations of power distribution network |
| US20160132616A1 (en) * | 2013-06-10 | 2016-05-12 | Siemens Aktiengesellschaft | Planning a power distribution network |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160132616A1 (en) * | 2013-06-10 | 2016-05-12 | Siemens Aktiengesellschaft | Planning a power distribution network |
| CN103489076A (en) * | 2013-09-30 | 2014-01-01 | 国家电网公司 | Method for planning substations of power distribution network |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107563571A (en) * | 2017-09-26 | 2018-01-09 | 国网安徽省电力公司合肥供电公司 | A kind of electric power facility is laid out automatic planning |
| CN112686480A (en) * | 2021-03-17 | 2021-04-20 | 国网浙江省电力有限公司 | Cost estimation system and method based on standard cost system |
| CN113343426A (en) * | 2021-05-11 | 2021-09-03 | 山东大学 | Urban distribution network line gauge method and system considering real demand guidance |
| CN113343426B (en) * | 2021-05-11 | 2023-05-12 | 山东大学 | Urban power distribution network line planning method and system considering real demand guidance |
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