山东科技大学论文moban.doc

摘要
高压断路器在电网中起控制与保护作用,当它发生故障或事故时会引起电网事故或扩大事故,造成相当大的经济及其它方面的损失。目前采用的计划定期检修具有很大的盲目性,浪费了大量人力、物力,而高压断路器的在线监测可以及时发现故障,为断路器故障的及时排除争取了时间。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。
本论文首先介绍了目前高压断路器状态在线监测和故障诊断研究的基本情况,通过对高压断路器基本情况的介绍及对高压断路器常见故障进行的统计和分析,明确了高压断路器在线监测的具体内容。
其次对断路器的在线监测原理进行了研究,介绍了各种设备状态监测和故障诊断的技术在系统中的应用,并对其未来的发展方向进行了探讨。同时研究分析了高压断路器机械方面和电气方面的各种状态监测方法,详细介绍了断路器振动信号和行程—时间特性测量分析方法的基本原理,从而获得了高压断路器在线监测的基本方法。
最后是系统的实现部分,通过总结以上的各种方法和原理,介绍了具体设计的部分硬件与软件的实现方法,论文最终完成了对高压断路器在线监测系统的部分理论研究,同时也完成了对系统硬件和软件的设计、开发的部分工作。
关键词: 高压断路器在线监测振动信号行程—时间特性
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,based upon condition monitoring,is the most advanced maintenance program now days. So,to carryout on-line working condition monitoring research for high-voltage circuit breaker has great significance in economy and technology.
This paper introduces the situation of current research on equipment state monitoring and fault diagnosis at first,and then introduces the basic information of the high-voltage circuit .So that some faults of the high-voltage circuit breaker can be monitored online.
Secondly,in this paper,the theory about on-line working condition monitoring research for high-voltage circuit breaker is discussed. Then presents a variety of technology on monitoring and diagnosis and probes its development tendency .The state monitoring methods of HV circuit breaker are studied and analyzed on the mechanism and electricity. How to measure the travel characteristic,calculate expectancy of e1ectrical endurance,analysis coil current and vibration, Thus can be obtained operating condition of circuit breakers .
Finally,the paper in