发电机故障放电远程监测与分析

发布时间：2018-06-26 09:59

本文选题：发电机 + 故障放电　；参考：《华中科技大学》2015年硕士论文

【摘要】：发电机作为电力系统的重要组成部分,它的安全可靠运行直接关系到电力系统的安全与稳定。统计结果表明,发电机安全运行的主要威胁之一来自定子绝缘故障。故障放电的测量是评价定子绝缘状况、发现绝缘故障的最有效手段之一。发电机故障放电在线监测目前已取得丰硕的理论与应用成果,然而当发现故障放电监测数据出现异常后,专家仍需要到现场去获取大量的采样数据和其他关联信息,使用专门的移动工作站等设备,来对异常数据进行分析。暴露出现有的发电机故障放电在线监测系统,在远程监测与分析方面的不足。本文首先介绍了课题开展的背景和HOMIS(Hydropower plant Optimal Maintenance Information System)在线监测系统的框架,在HOMIS系统电气单元的故障放电在线监测基础上,开展拟专家思维的故障放电分析方法研究,并研究了中性点耦合电容器法所检测到的故障放电信号的谱图绘制与分析方法。针对目前发电机故障放电在线监测系统远程监测与分析功能的不足,在HOMIS集成环境下,利用远程监测技术,模拟专家对故障放电分析的思路,研发了基于HOMIS网络平台的发电机故障放电的远程监测平台,旨在为运行人员、检修人员以及相关专家提供了强有力的分析工具。并结合现场实际监测数据,进行故障放电的放电谱图的关联分析、报表分析以及趋势分析。展示了在工业现场发挥的作用和用户利用新系统开展辅助诊断的流程和方法。
[Abstract]:Generator as an important part of power system, its safe and reliable operation is directly related to the safety and stability of power system. The statistical results show that one of the main threats to the safe operation of generator is stator insulation fault. Fault discharge measurement is one of the most effective methods to evaluate stator insulation condition and find insulation fault. At present, great achievements have been made in the theory and application of on-line monitoring of generator fault discharge. However, when abnormal fault discharge monitoring data are found, experts still need to go to the field to obtain a large number of sampling data and other related information. Use specialized mobile workstations and other devices to analyze abnormal data. There are some problems in remote monitoring and analysis of generator fault discharge on-line monitoring system. This paper first introduces the background of the project and the frame of online monitoring system of Hydropower plant optimal maintenance Information system. On the basis of on-line monitoring of fault discharge in electric unit of HOMIS system, the research of fault discharge analysis method based on quasi-expert thinking is carried out. The method of drawing and analyzing the spectrum of the fault discharge signal detected by the neutral coupling capacitor method is also studied. In view of the deficiency of remote monitoring and analysis function of on-line monitoring system for generator fault discharge at present, under the integrated environment of HOMIS, using remote monitoring technology, the train of thought of simulating expert to fault discharge analysis is simulated. A remote monitoring platform for generator fault discharge based on Homis network platform is developed, which aims to provide a powerful analysis tool for operators, maintenance personnel and related experts. Combined with the actual monitoring data, the correlation analysis, report analysis and trend analysis of the discharge spectrum of the fault discharge are carried out. The function of industrial field and the process and method of user using the new system to carry out auxiliary diagnosis are demonstrated.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM31

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