设备电参量在线监测及故障诊断的研究

发布时间：2018-09-17 07:49

【摘要】：电能的使用是人类进入新的文明时期的标志,随着现代化、自动化的逐步发展,人类对于电的依赖越来越强烈,如今电能已经成为人类生活、生产必不可少的基本能源。电能使用的愈加广泛与频繁使得电能的有效管理与用电安全成为了用电过程关心的核心问题。本文对一般电量监测系统进行分析,研究电量数据的采集以及通信协议,并分析配电柜故障电弧检测的研究现状,针对电能的节约利用与安全生产,提出了设备电参量的在线监测与故障电弧诊断系统。系统由电量在线监测和配电柜电弧故障诊断两部分组成。对于电量监测部分,系统应用通信技术,将现场采集到的电参量传输至监测上位机,以实现数据的远程测量、传输、控制、调节,便于管理人员对远端的用电设备进行监测、管理。系统由现场层、网络层、监管层三部分构成。现场层对电量参数以及配电柜弧声数据进行采集；网络层利用RS485总线、TCP/IP网络协议和WIFI模块将数据传输至监管层；监管层通过LabVIEW编写的上位机界面远程、实时地监控能耗信息,便于监管层掌握能耗现场状况,并做出相应调整。故障诊断方面主要从设备开关柜内电弧诊断方面进行研究,鉴于常见的通过监测线路电压、电流的波形畸形变化方法,对设备要求高,运算复杂,本系统采用对电弧发生时产生的物理现象进行检测的方式来实现故障电弧的诊断。系统利用电弧产生前在线路中会发出滋滋声的特点,利用多个光纤声音传感器对开关柜内声音进行检测,通过信息融合技术对检测信息综合判断后,发出警报通知管理人员,并使设备做出相应的保护措施。在整个系统中,为了增强管理功能,系统对采集到的数据进行统计、分析、对比,分析能耗原因,制定合理指标,重点管理,实现安全、节约的生产与生活。
[Abstract]:The use of electric energy is the symbol of human entering a new civilization period. With the gradual development of modernization and automation, people rely more and more on electricity. Nowadays, electric energy has become a basic energy source for human life and production. The more and more extensive and frequent use of electric energy makes the effective management and safety of electric energy become the core problem of the process of electricity use. In this paper, the general electric power monitoring system is analyzed, the data collection and communication protocol are studied, and the research status of fault arc detection in distribution cabinets is analyzed, aiming at the saving and utilization of electric energy and safety in production. An on-line monitoring and fault arc diagnosis system for electrical parameters of equipment is proposed. The system consists of two parts: on-line monitoring of electric quantity and arc fault diagnosis of distribution cabinet. For the electric quantity monitoring part, the system uses the communication technology to transmit the electric parameters collected in the field to the monitoring computer, so as to realize the remote measurement, transmission, control and adjustment of the data, which is convenient for the managers to monitor the remote electric equipment. Administration and Management The system consists of three parts: field layer, network layer and supervision layer. The field layer collects the electric parameters and the arc sound data of the distribution cabinet; the network layer transmits the data to the supervision layer by using the RS485 bus TCP / IP network protocol and WIFI module; the supervision layer monitors the energy consumption information in real time through the upper computer interface compiled by LabVIEW. It is convenient for the supervisor to grasp the energy consumption situation and adjust accordingly. In the aspect of fault diagnosis, the electric arc diagnosis in the switchgear cabinet is mainly studied. In view of the common methods of waveform malformation by monitoring the line voltage and current, the equipment needs high requirements and the calculation is complicated. In this system, the fault arc diagnosis is realized by detecting the physical phenomena when the arc occurs. The system makes use of the characteristic that the electric arc produces the sound in the circuit before it is generated. It uses several optical fiber sound sensors to detect the sound inside the switchgear. After synthetically judging the detection information through the information fusion technology, the system sends out an alarm to the manager. And make the equipment to make corresponding protection measures. In the whole system, in order to enhance the management function, the data collected are analyzed, compared and analyzed, the reason of energy consumption is analyzed, the reasonable index is established, the management is emphasized, and the production and life of safety and economy are realized.
【学位授予单位】：天津科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM933

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