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Black-start scheme optimization method based on Vague set

A scheme optimization, black start technology, applied in the field of power system, can solve problems such as difficulty

Inactive Publication Date: 2019-05-17
ZHEJIANG ZHONGXIN POWER ENG CONSTR CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is necessary to rely on experts to give fuzzy values ​​of subjective weights between indicators, and it is also necessary to determine the correlation between decision-making experts, which is somewhat difficult to implement in practice

Method used

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  • Black-start scheme optimization method based on Vague set
  • Black-start scheme optimization method based on Vague set
  • Black-start scheme optimization method based on Vague set

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Experimental program
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Embodiment Construction

[0013] Let the m alternatives of the black start decision be a 1 ,a 2 ,...,a m , n evaluation indicators are c 1 ,c 2 ,...,c n , the specific steps for optimizing the black start scheme based on the Vague set are as follows:

[0014] Step 1. Form a black start decision matrix;

[0015] According to the state and parameters of the equipment in the power system, the black start scheme to be evaluated is formed, the appropriate evaluation index is selected, and the single value data is converted into vague value data by using the following two formulas:

[0016] income index

[0017] cost index

[0018] In the formula: a ij and z ij plan a i In the evaluation index c j Vague value and single value data under ; z jmax and z jmin for index c j The theoretical maximum and minimum values ​​of ; the superscript p represents the p-th power of the index value (2, 3, 4, ... can be taken).

[0019] Finally, the Vague value decision matrix R is obtained:

[0020]

[...

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Abstract

The invention relates to a black-start scheme optimization method based on a Vague set. The black-start scheme optimization method based on the Vague set comprises the steps that according to the state and parameters of equipment in a power system, a black-start scheme to be evaluated is formed, appropriate evaluation indexes are selected to form a Vague value decision-making matrix; an ideal scheme is selected according to Vague index data of alternative schemes; the similarity between each black-start alternative scheme and the ideal scheme is calculated; the Vague value weight of each evaluation index is determined; a linear programming model is used for working out the optimal weight; and the final scores of the schemes are calculated and ranked. Through a black-start decision-making method based on the Vague similarity, the adopted subjective information is little, and objective information among the indexes is fully utilized, ranking of advantages and disadvantages of the schemesby comparing the similarity between the alternative dark-start schemes and the ideal scheme is quickly obtained, and thus support can be provided for online black-start decision-making.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a black start decision-making method for the power system. Background technique [0002] Although the theory and technology of power system operation control are constantly developing, large-scale blackouts and system collapses cannot be completely avoided. In this way, it is still necessary to study system recovery and black start strategies, so as to restore power to users as soon as possible after a power outage or even a system crash. [0003] Power system restoration is generally divided into three stages: black start stage, network reconstruction stage and load restoration stage. As far as black start is concerned, the indicators for evaluating the pros and cons of its recovery plan can generally be divided into quantitative and qualitative. Considering the subjective characteristics of some indicators in black start decision-making and the volatility of power system related ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06Q50/06G06Q10/06
Inventor 范华邱海锋翁利国尉耀稳余彬冯军陈杰徐小业
Owner ZHEJIANG ZHONGXIN POWER ENG CONSTR CO LTD