【作者】 李大进；

【导师】 王富荣；

【作者基本信息】 西南交通大学 ， 电力系统及其自动化， 2004， 硕士

【摘要】 高压断路器在电网中起保护与控制作用，当它发生故障或事故时会引起电网事故或扩大事故，造成相当的经济及其它方面的损失。我国目前采用的“到期维修”的计划体制存在严重的不足，如临时性维修不足、维修过剩、盲目维修或因检修不当而引发检修事故。建立在设备运行状态基础上的状态检修是当前最为先进的状态检修制度。因此，对高压断路器进行在线监测研究，具有重要的经济意义和技术意义。 论文先对断路器的在线监测原理进行了研究，详细介绍了断路器的行程——时间特性的测量、断路器电寿命的计算、分(合)闸线圈电流的分析、振动信号的分析方法。并介绍了如何通过相似波形辨识比来进行故障诊断，从而得知断路器的运行状态的方法。 其次，设计了基于TMS320F206的现场数据采集单元。高压断路器在线监测系统硬件分为两层，底层是现场数据采集单元，主要负责数据的采集、处理以及和后台机的通信等等；上层是后台机，主要负责人机界面的显示、打印、故障诊断以及建立高压断路器运行状态数据库等功能。现场数据采集单元通过RS485总线与后台机通信。 最后，设计了现场数据采集单元的软件。 论文完成了高压断路器在线监测系统的部分理论研究，完成了基于TMS320F206的现场数据采集单元的硬件和软件设计、开发的部分工作。更多还原

【Abstract】 High-voltage circuit breaker is used to control and safeguard electric power equipment in electric power system. When it do not work fine, it will cause electric power accident or other indirect accident. The traditional scheduled maintenance or Time Based Maintenance has some serious defects, such as sub-maintenance, over maintenance and the faults caused by the maintenance itself. Condition Based Maintenance, bing based upon condition monitoring, is the most advanced maintenance program nowdays. So, to carry out on-line working condition monitoring research for high-voltage circuit breaker has great significance in economy and technology.In this paper,the theory about on-line working condition monitoring research for high-voltage circuit breaker is firstly dicussed. How to measure the travel characteristic, calculate expectancy of electrical endurance,analyse coil current and vibration is introduced in detail. How to carry out fault-diagnosis based similarity analysis for high-voltage circuit breaker is introduce in detail too.Secondly,The hardware for monitoring high-voltage circuit breaker working condition is designed. The hardware is made up of tow parts, one is the unit for data acquisition, which is used to sample data, dispose data with FFT and communicate with the computer, the other is the computer, which is used to display result, and so on.Data acquisition unit and the computer are linked by RS485Lastly, The software for data-acquistion unit is designed.The part of the theory about on-line working condition monitoring research for high-voltage circuit breaker are researched, the part of the design of the hardware and the software are completed.更多还原