火力发电厂机组励磁系统的工业应用与研究

发布时间：2018-06-06 05:10

本文选题：励磁系统 + ABB　；参考：《华北电力大学》2017年硕士论文

【摘要】：火力发电厂机组ABB UNITROL 5000励磁系统作为发电企业重要的生产设备,其自身各部件质量的好坏和励磁系统整体性能如何,是直接影响整个机组安全稳定运行、经济、满发的重要因素之一;同时,作为改善发电机电气调节特性的重要控制系统,对提高机组所在区域电网电力系统的稳定性也起着十分重要的作用。在过去几年中,很多火力发电厂相继发生了由ABB UNITROL 5000励磁系统故障导致跳机的重大事故,严重影响了发电企业全年安全生产任务和经济效益的完成。因此,开展对火力发电厂机组ABB UNITROL5000励磁系统的工业应用与研究是非常有必要的。而工业工程作为一门管理与技术的集成学科,为火电企业生产系统改善提供了一套方便可行的理论与方法。工业工程的理论与方法在发电企业设备专业技术和管理技术之间构建了一座重要的桥梁,在实际现场的有效应用不仅可以规避发电企业生产设备寿命管理全周期内各个阶段出现的问题,而且还能显著提高企业生产设备的效能,成为提高发电企业生产设备健康水平和技术装备水平的重要方法和手段。本文主要是以某火力发电厂机组ABB UNITROL5000励磁系统在现场中的工业应用为例。首先,简要介绍了ABB UNITROL5000励磁系统的组成及功能配置,并结合整个系统的硬件组成、软件逻辑图以及相关的励磁系统检修维护试验项目,对ABB UNITROL5000励磁系统整体性能进行了深度分析和研究。其次,通过灵活运用工业工程应用技术体系中的一些思维方法和实施原则,对ABB UNITROL 5000励磁系统在火力发电厂工业实践应用中,励磁系统一些部件或设计回路上出现的、具有代表性的安全技术隐患问题,进行了重点分析和对策性研究,并进行了相应的优化和改善,从而在原有基础上比较显著地改善了该火力发电厂机组ABB UNITROL 5000励磁系统的运行状况和可靠性。最后,从设备全寿命周期质量管理和现场设备工业实际应用情况角度出发,提出了对该火力发电厂#3机组ABB UNITROL5000励磁系统控制部分进行升级改造为ABB UNITROL6800励磁系统的技术方案,并利用相关工业工程技术的理论方法对改造方案进行了可行性分析和论证,力求改造方案科学合理。改造后的机组励磁系统冗余度更高,技术更先进,维护更方便,通讯更加可靠,也从根本上解决了火力发电厂机组ABB UNITROL5000励磁系统存在的“先天性”设计缺陷,从而将机组励磁系统的整体性能提高到了一个全新的高度。
[Abstract]:ABB UNITROL 5000 excitation system of thermal power plant is an important production equipment in power generation enterprises. The quality of its components and the overall performance of the excitation system directly affect the safe and stable operation and economy of the whole unit. At the same time, as an important control system to improve the electrical regulation characteristics of generators, it also plays a very important role in improving the stability of the power system in the area where the unit is located. In the past few years, many thermal power plants have occurred serious accidents caused by the failure of ABB UNITROL 5000 excitation system, which has seriously affected the completion of annual safe production tasks and economic benefits of power generation enterprises. Therefore, it is necessary to develop the industrial application and research of ABB UNITROL5000 excitation system. As an integrated subject of management and technology, industrial engineering provides a set of convenient and feasible theory and method for improving the production system of thermal power enterprises. The theory and method of industrial engineering have built an important bridge between the equipment professional technology and the management technology of power generation enterprise. The effective application in the actual field can not only avoid the problems in the whole life management cycle of the production equipment in the power generation enterprise, but also improve the efficiency of the production equipment in the enterprise. It has become an important method and means to improve the health level of production equipment and the level of technical equipment in power generation enterprises. In this paper, the industrial application of ABB UNITROL5000 excitation system in a thermal power plant is taken as an example. First of all, the composition and function configuration of ABB UNITROL5000 excitation system are briefly introduced, and the hardware composition, software logic diagram and related test items of excitation system maintenance and repair are combined with the whole system. The overall performance of ABB UNITROL 5000 excitation system is deeply analyzed and studied. Secondly, through the flexible application of some thinking methods and implementation principles in the industrial engineering application technology system, the paper introduces the application of ABB UNITROL 5000 excitation system in the industrial practice of thermal power plant. The representative hidden troubles of safety technology are analyzed and studied, and the corresponding optimization and improvement are carried out. Therefore, the operation condition and reliability of ABB UNITROL 5000 excitation system in the thermal power plant are improved remarkably on the basis of the original results. Finally, from the point of view of equipment life cycle quality management and practical application of field equipment industry, the technical scheme of upgrading ABB UNITROL5000 excitation system control part of #3 unit to ABB UNITROL6800 excitation system is put forward. The feasibility analysis and demonstration of the retrofit scheme are carried out by using the theory and method of the relevant industrial engineering technology in order to make the retrofit scheme scientific and reasonable. The improved excitation system has higher redundancy, more advanced technology, more convenient maintenance and more reliable communication. It also solves the "congenital" design defect of ABB UNITROL5000 excitation system in thermal power plant. Thus, the overall performance of the unit excitation system is improved to a new height.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM621

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