公开(公告)号：US20100102976A1

公开(公告)日：2010-04-29

申请号：US12345542

申请日：2008-12-29

申请人： Wook Ryun Lee ,  Jun Shin Lee ,  Yong Chae Bae ,  Byong Han Kim ,  Sang Kil Lee

发明人： Wook Ryun Lee ,  Jun Shin Lee ,  Yong Chae Bae ,  Byong Han Kim ,  Sang Kil Lee

IPC分类号： G08B21/18 ,  G01M7/00

CPC分类号： G01H1/003

摘要： The present invention provides a system and method for monitoring vibration of a power transformer. The system comprises at least one vibration sensor operably mounted to the outer case of a transformer for sensing vibration of the power transformer; a spectrum analyzer for processing the vibration signal from the vibration sensor, the spectrum analyzer generating a frequency spectrum of the vibration signal and calculating a velocity rating from the frequency spectrum; a diagnosing means for evaluating the velocity rating of the vibration signal, the diagnosing means assigning a vibration grade for each velocity rating, the diagnosing means finding the maximum velocity rating; and a means for dispatching a control message to an operator when the maximum velocity rating reaches a threshold value. It can be appreciated that the mechanical health of a large-sized transformer can be managed in a systematic and efficient manner during its operation. This system can prevent accidents due to the mechanical failure of the transformer or diagnosing failure of the transformer itself during its operation. This system also can provide useful information to determine when the transformer has to be replaced and further to predict what the expected lifespan of the transformer will be.

摘要翻译： 本发明提供了一种用于监测电力变压器的振动的系统和方法。 该系统包括至少一个振动传感器，其可操作地安装到变压器的外壳上，用于感测电力变压器的振动; 用于处理来自振动传感器的振动信号的频谱分析器，频谱分析仪产生振动信号的频谱并从频谱计算速度等级; 用于评估振动信号的速度等级的诊断装置，为每个速度等级分配振动等级的诊断装置，找到最大速度等级的诊断装置; 以及当最大速度等级达到阈值时向操作者发送控制消息的装置。 可以理解，在其操作期间，可以以系统和有效的方式管理大型变压器的机械健康。 该系统可以防止变压器机械故障引起的事故或诊断变压器本身在运行过程中的故障。 该系统还可以提供有用的信息来确定何时必须更换变压器，并进一步预测变压器的预期使用寿命。