考虑特殊区段的架空输电线路可靠性评估与检修决策方法研究

发布时间：2018-02-04 02:15

本文关键词： 架空输电线路可靠性评估特殊区段集对分析法检修决策方法　出处：《重庆大学》2014年硕士论文　论文类型：学位论文

【摘要】：架空输电线路是电力系统的重要组成部分，，其运行状态直接影响到整个电力系统的可靠性水平。随着电网状态检修工作的深入开展，正确评估架空输电线路的运行可靠性以及提供科学的检修决策是检修成功与否的关键。本文的目的在于提出一种架空输电线路状态评估及检修决策方法。通过对架空输电线路进行故障模式及影响分析，有效建立架空输电线路的可靠性评估模型，研究特殊区段重要度、故障概率等参数的确定方法。论文的主要研究成果如下： ①综合考虑架空输电线路各单元及其功能，完成对架空输电线路的故障模式和影响分析，确定输电线路的主要故障模式和对应故障特征量，建立架空输电线路的故障树模型，并给出各故障模式概率的确定方法。 ②考虑到架空输电线路在特殊区段运行可靠性会受到相关因素影响，依据相关运行规程和评价导则，分析各特殊区段的环境特点和多发故障，并针对多发故障提出特殊区段输电线路的状态修正模型。 ③针对传统输电线路检修模式受人力财力制约而检修效率低下的问题，建立一种基于集对分析法的输电线路检修决策模型，充分考虑环境因素的影响，为输电线路检修决策提供依据。 ④给出基于故障树分析的输电线路可靠性评估方法的评估流程图、评估实例和输电线路检修决策模型的应用实例，验证所提出的可靠性评估模型和检修决策方法。
[Abstract]:The overhead transmission lines is an important part of power system, its running state directly affects the reliability of the power system. With the state maintenance work of power grid development, the correct evaluation of reliability of overhead transmission lines and provide scientific maintenance decision is the key to the success of maintenance. The purpose of this paper is to propose a transmission line status assessment and maintenance decision-making method. Through the analysis of failure mode and effect of overhead transmission lines, a reliability evaluation model of the effective establishment of overhead transmission lines, the special section of important degree, determine the fault probability parameter method.
The main research results of this paper are as follows:
The comprehensive consideration of the overhead transmission line of each unit and its function, failure mode and effect analysis of overhead transmission lines, to determine the main failure modes and corresponding fault characteristics of transmission line, the fault tree model of overhead transmission lines, and given the failure mode probability method.
Considering the overhead transmission line in the special section of the operational reliability will be related factors, according to the relevant operating procedures and guidelines for the assessment and analysis of environmental characteristics of the special section and multiple faults, and puts forward the special section of transmission line for multiple fault state correction model.
(3) aiming at the problem of low maintenance efficiency of traditional transmission line maintenance mode, which is restricted by manpower and financial resources, a decision-making model of transmission line maintenance based on set pair analysis is established, which fully considers the influence of environmental factors and provides basis for maintenance decisions of transmission lines.
Fourth, the evaluation flow chart of transmission line reliability assessment method based on fault tree analysis is given, and an example of application example and transmission line maintenance decision-making model is applied to verify the proposed reliability evaluation model and maintenance decision-making method.

【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM732;TM75

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