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A Distribution Network Expansion Planning Method Based on Policy Adaptive Differential Evolution

An adaptive differential and power distribution network technology, applied in data processing applications, instruments, predictions, etc., can solve problems such as infeasible solutions, local optimal solutions, etc., and achieve the effect of convenient adjustment and intuitive planning process

Inactive Publication Date: 2017-05-03
杭州中威智能科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
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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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  • A Distribution Network Expansion Planning Method Based on Policy Adaptive Differential Evolution
  • A Distribution Network Expansion Planning Method Based on Policy Adaptive Differential Evolution
  • A Distribution Network Expansion Planning Method Based on Policy Adaptive Differential Evolution

Examples

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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 uses a power line management GIS information system. The system has been put into trial use in Yantai, Shandong and other places, and the operation has been well received.

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

[0082] Create node elements on the power line management GIS information system platform such as figure 2 , The solid point is the load, the hollow point is the substation, create line elements such as image 3 . After applying the algorithm to calculate, we get Figure 4 Wiring scheme for distribution lines. Table 1 shows node data, and Table 2 feeder data.

[0083]

[0084] Table 1

[0085] Branch number starting point end Resistance (Ω) Reactance (Ω...

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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 distribution network in a power system, and in particular to a distribution network expansion planning method based on strategy adaptive differential evolution. Background technique [0002] Distribution network expansion planning refers to finding an optimal or suboptimal solution from the possible substation location and capacity, wiring mode, number of feeders, paths and models based on the analysis of the current grid and the forecast of future load distribution. The transformation plan minimizes the sum of investment, operation, maintenance, network loss and reliability loss. [0003] According to the different processing methods of economy and reliability indicators, the mathematical model 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 economic indicators, and reliabi...

Claims

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Application Information

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Patent Type & Authority Patents(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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