电机局部放电在线监测系统的设计与实现

发布时间：2018-01-18 11:05

本文关键词：电机局部放电在线监测系统的设计与实现　出处：《大连理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：大型旋转电机是电力系统中的非常重要的设备,目前来说,如何提高电机安全稳定运行是提高电力系统稳定的关键因素。据统计,电机的定子绝缘故障占故障总数的40%,而定子绝缘故障主要来自于局部放电,如何监测电机的局部放电情况以及电机局部放电的发展趋势成为迫切的需求,因此局部放电在线监测系统平台的应用非常重要。本文论述的局部放电在线监测系统是基于C/S结构的实时在线监测系统,结合电力系统客户以及局放系统专家等对电机局放提出的具体需求,确定了具体的系统具体实现方案,系统采用Microsoft SQL Server 2008作为数据库,NI公司的LabView环境作为开发平台,运行平台为Windows xp sp3以上32位或者64位平台。系统具体采用的硬件为高压陶瓷电容传感器、高频数字采集卡、低频数字采集卡、1000Mbps光电转换器以及后台无风扇高性能工控机。系统经过测试,性能较好、界面友好、操作简洁、运行稳定。论文详细阐述了大型局放在线监测系统的需求分析,主要包括电机管理需求、用户管理需求、电机告警管理需求、数据采集管理需求、局部放电智能分析诊断需求、局部放电信号分析需求。然后阐述了系统的结构模型,在需求分析的基础之上,论述了系统设计,给出了系统设计各个模块的划分,根据模块划分的结果,对系统的用户管理模块、告警管理模块、电机管理模块、采集卡管理模块等进行了详实的描述与说明。之后给出了数据库的设计与说明。在设计的基础上给出了主要模块:机器管理模块、用户管理模块、告警管理模块、参数设置模块、数据采集与分析模块等的实现方法与手段,并且在最后给出了关于对系统的不足与系统即将需要实现的进一步的功能及未来的展望。本系统实现之后能够对电机的绝缘性能进行趋势分析,能够在电机绝缘发生问题前进行报警,为电机的检修与停机计划做出正确的指示,给企业带来了巨大的经济效益。
[Abstract]:Large rotating motor is a very important equipment in the power system. At present, how to improve the safe and stable operation of the motor is the key factor to improve the stability of the power system. Stator insulation faults account for 40 percent of the total number of faults, and stator insulation faults mainly come from partial discharge. How to monitor the partial discharge of motor and the development trend of partial discharge becomes an urgent need. Therefore, the application of PD on-line monitoring system platform is very important. The PD on-line monitoring system discussed in this paper is a real-time on-line monitoring system based on C / S structure. Combined with the specific needs of electric power system customers and PD system experts, the specific system implementation scheme is determined. The system adopts Microsoft SQL Server 2008 as the LabView environment of NI Company as the development platform. The operating platform is 32 bit or 64 bit platform above Windows XP sp3. The hardware of the system is high voltage ceramic capacitive sensor, high frequency digital acquisition card and low frequency digital acquisition card. 1000Mbps photoelectric converter and backstage high performance industrial control computer without fan. The system has good performance, friendly interface and simple operation. The paper expatiates the requirement analysis of the monitoring system, including the demand of motor management, the demand of user management, the requirement of motor alarm management, and the requirement of data acquisition and management. Then the structure model of the system is expounded and the design of the system is discussed on the basis of the requirement analysis. According to the result of module partition, the user management module, alarm management module and motor management module of the system are given. Data acquisition card management module is described and explained in detail. After that, the design and description of database are given. On the basis of the design, the main modules: machine management module, user management module are given. Alarm management module, parameter setting module, data acquisition and analysis module, etc. At the end of the paper, the shortcomings of the system and the further functions and future prospects of the system are given. After the system is implemented, the trend of the insulation performance of the motor can be analyzed. It can alarm the motor before the insulation problem, and make correct instructions for the maintenance and shutdown plan of the motor, which has brought enormous economic benefits to the enterprise.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP311.52;TP274

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