Decision-making method for multi-objective optimal dispatching of power system based on evidence reasoning

A power system scheduling and multi-objective optimization technology, applied in data processing applications, instruments, forecasting, etc., can solve problems such as complex power system scheduling decision-making, and fill the problems that are difficult to scientifically schedule and operate, have wide application prospects, and have significant engineering practical value. Effect

Active Publication Date: 2018-01-05
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0005] The main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a decision-making method for multi-objective optimal dispatching of power systems based on evidence reasoning. This method can not only effectively integrate multi-objective operating evidence, but also consider The impact of uncertainty on decision-making, suitable for solving complex power system dispatching decision-making problems

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  • Decision-making method for multi-objective optimal dispatching of power system based on evidence reasoning
  • Decision-making method for multi-objective optimal dispatching of power system based on evidence reasoning
  • Decision-making method for multi-objective optimal dispatching of power system based on evidence reasoning

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Embodiment 1

[0043] Such as figure 1 As shown, this embodiment takes the IEEE-30 node power system as a simulation object to specifically illustrate the method for decision-making based on evidence-based reasoning for multi-objective optimal scheduling of the power system of the present invention.

[0044] Step (1): The dispatcher determines multiple dispatch targets. In this embodiment, the targets for optimal dispatch are determined as power generation cost, network loss, voltage deviation, pressure stability index, carbon dioxide emissions, and pollutant gas emissions. Denote the scheduling target set as {A 1 ,A 2 ,...,A 6 }.

[0045] The eigenvector method based on analytic hierarchy process is used to select the important target set that has a greater impact on the scheduling operation. The dispatcher compares the dispatch goals of these studies in pairs to determine the evaluation matrix:

[0046]

[0047] Among them, element A ij (i,j=1,2,...L) is the judgment scale, which represents tar...

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Abstract

The invention discloses a decision-making method for electric system multi-objective optimization dispatching and based on evidence reasoning. The decision-making method includes the steps that priority analysis is performed on a plurality of dispatching objectives which electric system dispatching needs to consider, and important objective sets having great influences on dispatching operation are selected; multi-objective optimization is performed on the important objective sets to obtain a Pareto solution set, and the Pareto solution set serves as a candidate solution set to be selected by a dispatcher; multi-attribute analysis is performed on the candidate solution set, confidence coefficient estimation is performed, and the generated confidence coefficient estimation result is used as decision-making evidence; the decision-making evidence is fused according to an evidence inference method, and then confidence coefficient distribution of candidate solutions in different estimation grades can be obtained; the confidence coefficient distribution is mapped into utility values according to a utility function, average utility values of different candidate solutions are compared, and the candidate solution with the largest average utility value is used as a final dispatching scheme. According to the decision-making method, multi-objective operation evidence is effectively fused, the uncertainty of estimation by the dispatcher is considered, and therefore the decision-making method has remarkable engineering practical value and wide application prospect.

Description

Technical field [0001] The present invention relates to the research field of power system multi-objective optimal dispatching, in particular to a decision-making method of power system multi-objective optimal dispatch based on evidence reasoning, which takes into account the uncertainty of decision makers (dispatchers). Background technique [0002] Optimal dispatching of power systems usually requires consideration of multiple objectives, such as power generation cost, system loss, voltage stability index, voltage deviation and other indicators. The essence is a multi-objective optimization problem. Because these multiple goals usually conflict with each other, such as power generation cost and voltage stability index, it is impossible to have a unique optimal solution to make these goals optimal at the same time. What is obtained by optimizing multiple goals of the power system is a set, which is called the Pareto solution set, and each solution in the solution set cannot domi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 吴青华李远征郑杰辉
Owner SOUTH CHINA UNIV OF TECH
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