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AC-DC hybrid power distribution network multi-objective planning method

A multi-objective planning, AC and DC hybrid technology, applied in the direction of AC and DC network circuit layout, AC network circuit, electrical components, etc., to achieve scientific methods, strong applicability, and good results

Inactive Publication Date: 2021-03-05
NORTHEAST DIANLI UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing methods only focus on single-objective optimization of economy or safety, and there are few research reports on multi-objective planning for AC-DC hybrid distribution network.

Method used

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  • AC-DC hybrid power distribution network multi-objective planning method
  • AC-DC hybrid power distribution network multi-objective planning method
  • AC-DC hybrid power distribution network multi-objective planning method

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The detailed steps of the present invention are: see figure 1

[0054] Step 1: Build the model, select the variables to be optimized, the optimization goal and determine the constraints. The process is as follows:

[0055] (a) Select the variable to be optimized, the variable to be optimized is the variable in the AC / DC distribution network.

[0056] (b) Select the optimization objective, choose reducing the investment cost of the distribution network, reducing network loss, and minimizing voltage deviation as the optimization objective, and coordinate the relationship between each optimization objective. The expression of the optimization objective function is:

[0057]

[0058] In formula (1), O, P loss and V de Represent the three optimization objectives of the annual investment and maintenance cost, network loss and voltage deviation of the AC and DC distribution network; x i It is a binary variable, 0 means this line will not be built, 1 means it will be bu...

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PUM

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Abstract

The invention discloses a multi-objective planning method for an AC-DC hybrid power distribution network, and belongs to the technical field of power system planning and safe operation. The inventionaims to solve a planning model by adopting an NSGA-II (Non-dominated Sorting Genetic Algorithm) with an elitist strategy to obtain a series of AC / DC hybrid power distribution network multi-objective planning methods meeting a Pareto optimal non-inferior solution set. The method comprises the following steps: establishing a model, selecting a variable to be optimized and an optimization target, anddetermining a constraint condition; setting an initial variable and giving a variable range to be optimized; taking the variable to be optimized as a population individual in the optimization process; calculating the power flow of the AC / DC power distribution network by adopting an alternate iteration method; solving an optimization objective function value corresponding to each individual in thepopulation; carrying out rapid non-dominated sorting on population individuals; reserving excellent individuals in the parent generation by adopting an elitist strategy; judging whether an algorithmtermination condition is met or not; and ending the optimization process and outputting a result. The method has the advantages of being scientific, high in applicability, good in effect and the like.

Description

technical field [0001] The invention belongs to the technical field of power system planning and safe operation. Background technique [0002] Scientific and reasonable distribution network planning is the basic measure to ensure the rational structure of the power grid, and it is also an important means to promote the economic operation of the power grid, and it is related to the stable development of the social economy in the power supply area. With the development of DC source-load and flexible DC technology, the AC-DC hybrid distribution network can receive DC source load more efficiently, which is an important development direction of the future distribution network. Therefore, the traditional single-target distribution network with the least investment cost or network loss can no longer meet the needs of AC and DC distribution network planning. In this context, multi-objective distribution network planning has attracted extensive attention from researchers at home and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06N3/12H02J4/00
CPCH02J4/00G06Q10/04G06Q10/06313G06Q50/06G06N3/126H02J2203/20H02J2203/10
Inventor 李扬辛业春李国庆张轶珠刘座铭董洪达李德鑫
Owner NORTHEAST DIANLI UNIVERSITY