【作者】 谭群峰；

【导师】 李朝晖；

【作者基本信息】 华中科技大学 ， 系统分析与集成， 2007， 硕士

【摘要】 水电厂状态检修工作的逐步开展,要求能够对水电设备的运行状况进行自动监测与诊断,并给出合理的维护决策。水轮发电机组重要设备的运行状态直接关系到机组的正常运行和电网的稳定。对水电机组进行工况状况监测与性能分析不仅能够提高设备维护活动的经济性,而且还能够显著提高系统的可靠性,为电厂状态检修的展开奠定技术基础。在此背景下,本文在研究水电机组工况分类、工况判别的基础上,深入分析工况性能指标的计算方法、实现方法以及工况性能评价机制,以达到水电机组重要设备状态监测的目的。主要体现在以下两个方面:1、在归纳和提炼调速系统领域专业知识与经验时,先对调速系统运行状况进行分层分级设计,参数和性能指标归纳、总结,然后利用工况运行机理进行工况分类、工况判别。2、通过对工况过程数据进行详细分析和计算相应工况的性能指标,分析给出工况性能评价报告与建议性的设备维护方案,并探讨了性能评价系统的总体框架。本文结合中国长江电力股份有限公司葛洲坝电厂“最优检修信息系统”项目下的“调速设备优化维护系统”子项目进行机组监测与故障诊断研究开发工作。该系统的成功运行验证了通过分析工况过程数据和计算工况性能指标,对设备运行状态实行状态监测的可行性,极大丰富了机组系统运行信息,有效地提高了水电机组运行与维护质量。更多还原

【Abstract】 For the purpose of realizing condition based maintenance in hydro power plants, the equipments’conditions should be automatically monitored and diagnosed to help to make proper maintenance decisions. The operations of the important equipment for Hydro Turbine Governor System have direct influences on correct running of generators and voltage stability of the power system. The automatic monitoring and Performance analysis of Hydro Turbine Governor will not only improve the availability of maintenance but also enhance the reliability of power system. It provides the technique foundation of hydro power plant’s condition based maintenance.After summarizing the condition classification and condition analysis of Hydro Turbine Governor System, this paper employs the approaches and the analysis to the performance measurement of Hydro Turbine Governor System to reach the requirements of condition based maintenance. The research work mainly focuses on two aspects:1. The process of summarizing and absorbing knowledge and experience of Hydro Turbine Governor System from the field experts begins with a hierarchical layer designing according to the actual structure. The performance standards and parameters of Hydro Turbine Governor System functions are listed. And then the approaches and the analysis to the performance measurement of Hydro Turbine Governor System are discussed2. After discussing the process of the data and the performance analysis, a report about the requirements of condition based maintenance and the performance analysis is given. The framework of the Performance Analysis System is also presented.This paper is based on the program Condition Monitoring and Diagnosis System of Governors, which is a subsystem of the Hydro Power Plant Optimal Maintenance Information System cooperated with the Gezhouba Hydropower Plant of China Yangtze Power Co. Ltd. A system is brought forward,which construct with the condition monitoring and the performance analysis. The field application results have demonstrated that the methods are feasible.更多还原