架空输电线路状态评估系统研究与实现

发布时间：2018-03-03 16:55

本文选题：架空输电线路　切入点：状态评估　出处：《浙江大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着我国电力系统的快速发展和电网规模的不断扩大,架空输电线路作为电力系统的重要组成部分,其运行状态直接关系到整个电力系统是否能够安全、稳定、高效地运行。为了保证线路的安全性和可靠性,需要对线路设备的运行状态进行科学、合理的评估,准确及时地掌握设备状况,在此基础上进行状态检修。输电线路状态评估作为状态检修的前提和基础,其评估结果是否准确直接影响到检修策略的制定是否合理。因此,采用科学有效的方法,及时准确的对架空输电线路的运行状态进行评估具有重要的现实意义和应用价值。本文在分析了现有的各种状态评估方法的基础上,提出了一种基于分层模型和模糊推理的状态评估方法。利用分层模型,建立了线路状态评估的四层结构,通过模糊推理逐层进行评价,依次得到八大线路单元、杆塔、线路的运行状态。同时,参考国家电网公司和浙江省电力公司的输电线路状态评价导则,制订了新的更加完善的线路状态评价导则。该评价导则根据线路实际运行的特点,不仅结合了线路基础信息、在线监控信息、日常巡检和检测试验信息等线路设备的内在因素,还结合了节气信息、环境区域信息和气象天气信息等外部因素,构建了较为全面的线路状态评估指标体系。在状态评估方法和评价导则的研究基础上,设计和开发了输电线路状态评估软件系统。该系统主要包括状态评估导则管理、状态评估信息收集、线路状态评估、评估结果统计查询、评估结果地图展示等功能模块,不仅可以实现当前线路状态的评估,还可以实现线路的历史状态评估和未来状态的模拟评估。实际运行结果表明了该系统的有效性和可靠性,能够为线路运维检修人员制定检修计划提供决策依据,更好地保障输电线路的安全稳定运行。
[Abstract]:With the rapid development of China's power system and the continuous expansion of power network scale, overhead transmission lines as an important part of the power system, its operating state directly related to the whole power system can be safe and stable. In order to ensure the safety and reliability of the line, it is necessary to make scientific and reasonable evaluation of the running state of the line equipment, and to grasp the equipment condition accurately and timely. On this basis, the condition assessment of transmission line is the premise and foundation of the condition maintenance. Whether the evaluation result is accurate or not will directly affect whether the maintenance strategy is reasonable or not. Therefore, a scientific and effective method is adopted. It has important practical significance and application value to evaluate the running state of overhead transmission line in time and accurately. A method of state evaluation based on hierarchical model and fuzzy reasoning is proposed. The four-layer structure of line state evaluation is established by using hierarchical model. Through fuzzy reasoning, eight line units and towers are obtained in turn. At the same time, with reference to the State Grid Corporation and Zhejiang Power Company's guidelines for evaluating the status of transmission lines, a new and more perfect guideline for line status evaluation has been formulated. The evaluation guidelines are based on the characteristics of the actual operation of the lines. It not only combines the internal factors of line equipment, such as line basic information, on-line monitoring information, routine inspection and test information, but also combines external factors such as solar terms information, environmental regional information and meteorological and weather information, etc. On the basis of the research of state evaluation method and evaluation guidelines, a transmission line state evaluation software system is designed and developed. The system mainly includes the management of state evaluation guidelines. State evaluation information collection, line status evaluation, statistical query of evaluation results, map display of evaluation results and other functional modules, not only can realize the current line status evaluation, The actual operation results show that the system is effective and reliable, and can provide the decision basis for line maintenance and repair personnel to make maintenance plan. Better ensure the safe and stable operation of transmission lines.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM75;TP311.52

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