Distribution network expansion planning method based on strategy adaption differential evolution

An adaptive differential and power distribution network technology, applied in data processing applications, instruments, predictions, etc., can solve problems such as local optimum and infeasible solutions

Inactive Publication Date: 2014-10-15
杭州中威智能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problems that distribution network expansion planning is easy to fall into local optimum when using evolutionary algorithm to solve it, and a large number of infeasible solutions are likely to be generated in the calculation process, the present invention proposes a policy-based adaptive difference algorithm that can effectively avoid falling into local optimum and has good reliability. An Evolutionary Distribution Network Expansion Planning Method

Method used

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  • Distribution network expansion planning method based on strategy adaption differential evolution
  • Distribution network expansion planning method based on strategy adaption differential evolution
  • Distribution network expansion planning method based on strategy adaption differential evolution

Examples

Experimental program
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Embodiment

[0080] This embodiment is an actual system of a 10kv distribution network with 25 nodes and 42 expandable branches. The power GIS platform adopts the power line management GIS information system. This system has been put into trial use in Yantai, Shandong and other places, and the operation reflects well.

[0081] The node data is shown in Table 1, and the substation with a capacity of 0 is shown; the branch data is shown in Table 2. The voltage drop constraint is set to 5%, ω is taken as 0.105, λ is taken as 0.05, and τ max Take 10000h and d take 0.5.

[0082] Create node elements on the power line management GIS information system platform such as figure 2 , the solid points are loads, and the hollow points are substations. Create line elements such as image 3 . After applying the algorithm for operation, the obtained Figure 4 distribution line layout scheme. Table 1 is node data, and Table 2 is feeder data.

[0083]

[0084] Table 1

[0085] branch num...

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Abstract

The invention discloses a distribution network expansion planning method based on strategy adaption differential evolution. A capital time value is considered, calculation is carried out according to equal amount installment payment capital recovery, a model is established by taking least annual investment and operation maintenance cost as a target, a differential evolution algorithm based on strategy adaption on the basis of the model is proposed, an optimal solution obtained by the algorithm is decoded, a planning line is drawn on an electric power GIS (geographic information system) platform according to a line number obtained by decoding to carry out structure repair to an individual, and the individual is enabled to satisfy a radiative network structure. An adaption evolutionary strategy is continuously updated in an iteration process to prevent the algorithm from being trapped in local optimum, and a planning process of a distribution network line is enabled to exhibit better interactivity, more intuitive planning result and flexibility in planning scheme regulation by a GIS.

Description

technical field [0001] The invention relates to an expansion planning of a power distribution network in a power system, in particular to a method for expansion planning of a power distribution network based on strategy adaptive differential evolution. Background technique [0002] Distribution network expansion planning refers to finding an optimal or suboptimal solution from possible substation locations and capacities, connection modes, feeder numbers, paths, and models on the basis of current grid analysis and future load distribution forecasts. Transformation plan to minimize the sum of investment, operation, maintenance, network loss and reliability loss. [0003] According to different processing methods of economic and reliability indexes, the mathematical models of distribution network expansion planning can be divided into three types: economical, reliable and comprehensive. [0004] The objective function of the economic model only considers the economic index, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY04S10/50
Inventor 李章维张贝金周晓根夏华栋李栋炜刘玉栋明洁陈铭陈凯郝小虎秦传庆梅珊张贵军
Owner 杭州中威智能科技有限公司
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