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Nonlinear fuzzy language power distribution network node vulnerability evaluation method based on complex network

A complex network and network node technology, which is applied in the field of nonlinear fuzzy language distribution network node vulnerability evaluation, can solve problems such as inability to effectively solve nonlinear problems and lack of accuracy, so as to improve the quality of power consumption and ensure normal use Electricity, the effect of reducing the risk of operation

Active Publication Date: 2019-10-29
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology

The former is a rule that directly adopts fuzzy language values. Its starting point is based on the experience and knowledge of field operators or experts. Although it is easy to understand and easy to apply, it also has a certain degree of subjectivity and lacks accuracy.
The latter combines defuzzification into the fuzzy reasoning process, and the consequent form is a linear relationship between input variables. Although the structure of this rule is simple, its consequent form is essentially a linear combination, which cannot effectively solve nonlinear problems.
Therefore, the existing fuzzy rules, that is, the existing fuzzy language rules, cannot be used to evaluate the vulnerability of distribution network nodes

Method used

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  • Nonlinear fuzzy language power distribution network node vulnerability evaluation method based on complex network
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  • Nonlinear fuzzy language power distribution network node vulnerability evaluation method based on complex network

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Embodiment Construction

[0074] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0075] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" a...

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Abstract

The invention relates to a nonlinear fuzzy language power distribution network node vulnerability evaluation method based on a complex network, and the method comprises the steps: constructing a powerdistribution network complex network model according to power distribution network data; determining importance measurement indexes of the power distribution network nodes, and constructing a networknode importance evaluation database; determining parameters of fuzzy rules in the complex network model of the power distribution network; performing data clustering analysis on the database by adopting a clustering method; establishing a nonlinear fuzzy language power distribution network node vulnerability evaluation model based on a complex network; carrying out parameter optimization; analyzing the node vulnerability of the power distribution network by adopting the optimized evaluation model; and maintaining the power distribution network node according to the analysis result. Analysis and accurate evaluation of the vulnerability of the power distribution network node are realized by adopting a nonlinear fuzzy language, so that the power distribution network node is maintained, the cascading failure risk is reduced, safe and stable operation of the power distribution network is ensured, the power utilization demand of a user is met, and the power utilization quality of the user and the economic benefit of a power grid enterprise are improved.

Description

technical field [0001] The application relates to the field of distribution networks, in particular to a nonlinear fuzzy language distribution network node vulnerability evaluation method based on complex networks. Background technique [0002] The distribution network refers to the power network that receives electric energy from the transmission network or regional power plants, and distributes it locally through power distribution facilities or distributes it to various users step by step according to voltage. The distribution network composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive power compensators and some auxiliary facilities is a network that plays an important role in distributing electric energy in the power network. The distribution network is directly connected with the power consumption terminal. It is an indispensable part of the power network. The vulnerability of the nodes in the distribution network reflec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/00G06Q50/06G06K9/62
CPCG06Q10/0639G06Q10/20G06Q50/06G06F18/23213Y02E40/70
Inventor 罗林欢马捷然栾乐许中罗思敏彭和平
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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