基于集对分析的架空输电线路状态评价方法

发布时间：2018-03-23 00:04

本文选题：评价体系　切入点：层次分析法　出处：《西安理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：架空输电线路由于分布地域广、在线监测难度大、穿越地形较为复杂,所以发生故障的频率较高。架空输电线路作为电力系统网络最重要的组成部分之一,在运行过程中,必须确保其健康、平稳,从而保证整个电力系统的安全与可靠,因此,架空输电线路的检修工作也被各个运维管理单位作为其日常生产最主要的业务之一。随着检修方式的不断发展,状态检修不断普及,对架空输电线路的运行状态进行分析显得尤为必要。架空输电线路在运行过程中,影响其运行状态的因素众多,这些因素在不同程度上都对架空输电线路的安全运行产生一定的威胁,所以,架空输电线路的状态评价对于架空输电线路检修安排,提升检修效率,合理分配资源,保证电网运行的安全性与可靠性都有着重要的意义,架空输电线路运行状态评价的准确与否也对相应的修决策判断是否正确有着重要的影响。为评判输电线路运行状态,本文针对架空输电线路特点,以集对分析方法为基础,对架空输电线路状态评估进行了研究:(1)基于架空输电线路组织架构和运行中故障类型,对架空输电线路运行方式进行分析,对其主要故障模式进行甄别、删除、合并、调整语言描述等操作法运用于架空输电线路评价指标的筛选中,最终构建了由架空输电线路部件为基础的评价指标体系。(2)采用取相对劣化度的方法对实际运行的定量、定性指标作了处理,并对指标运行状态进行等级划分,并得出了指标对各个等级隶属函数得计算方法。(3)通过集对分析的方法,结合层次分析法与熵权法,求各个指标权重的,建立了架空输电线路评价数学模型。最后,通过实例分析验证了基于集对分析法的架空输电线路状态评价方法的有效性和可行性,达到了实际运行中对输电线路整体性能进行评估的要求,对架空输电线路做出继续运行、实施监控或停役检修等决策,提供了准确可信地估计,为输电线路状态检修以及状态评价提供了新方法。
[Abstract]:Because of the wide distribution of transmission lines, the difficulty of on-line monitoring and the complexity of terrain crossing, overhead transmission lines have a high frequency of faults. As one of the most important components of power system network, overhead transmission lines are in operation. It is necessary to ensure its health and stability, thereby ensuring the safety and reliability of the entire power system, and therefore, Maintenance and repair work of overhead transmission lines is also regarded as one of the most important business in its daily production by various operation and maintenance management units. With the continuous development of maintenance and repair methods, condition based maintenance is becoming more and more popular. It is very necessary to analyze the running state of overhead transmission lines. There are many factors that affect the running state of overhead transmission lines. These factors all pose a certain threat to the safe operation of overhead transmission lines, so the condition evaluation of overhead transmission lines can improve the maintenance efficiency, allocate resources reasonably, and improve the maintenance arrangements of overhead transmission lines. It is of great significance to ensure the safety and reliability of power network operation. The accuracy of the evaluation of overhead transmission line operation status also has an important impact on whether the corresponding repair decision is correct or not. In this paper, according to the characteristics of overhead transmission lines, based on the method of set pair analysis, this paper studies the evaluation of overhead transmission lines' status. (1) based on the organizational structure of overhead transmission lines and the types of faults in operation, The operation mode of overhead transmission lines is analyzed, and the main fault modes are identified, deleted, merged, adjusted language description and other operator methods are applied to the selection of evaluation indexes of overhead transmission lines. Finally, the evaluation index system based on overhead transmission line components is constructed. The method of relative deterioration degree is adopted to deal with the quantitative and qualitative indexes of actual operation, and the operation status of the indicators is classified. Finally, the mathematical model of evaluation of overhead transmission line is established by means of set pair analysis, AHP and entropy weight method. The effectiveness and feasibility of the state evaluation method based on set pair analysis method are verified by an example, which meets the requirements of evaluating the overall performance of transmission lines in actual operation, and makes the continuous operation of overhead transmission lines. The decision of monitoring or stopping service maintenance provides accurate and reliable estimation, and provides a new method for condition maintenance and condition evaluation of transmission lines.
【学位授予单位】：西安理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM75

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