电力变压器振动在线监测系统的开发与应用

Design and implementation of online vibration monitoring system for power transformer

设计了电力变压器在线振动监测系统。该系统包含传感器模块、实时处理器模块和上位机模块。传感器模块采集电力变压器的振动信号、电压和负载电流,再传输给实时处理器模块进行预处理,实时处理器模块将处理后的数据传输给上位机模块进行显示、存储和分析。虚拟仪器(VI)被用于模块间的通信,模糊综合评价方法被引入到振动信号分析中。对于各模块的硬件参数进行了选择。基于IEC61850,将系统的各功能建模为若干逻辑节点,实现对系统的IED信息建模。现场运行显示了所设计系统的实用性。

An OVS（Online Vibration monitoring System） is developed for power transformer,which consists of sensor module,real-time CPU module and superordinate unit module.The vibration signal,voltages and load currents of power transformer are acquired by the sensor module,pre-processed and then transferred by the real-time CPU module to the superordinate unit module for display,store and analysis.Visual instrument is applied for the communication among modules and fuzzy synthetic evaluation is adopted in vibration signal analysis.The hardware parameters of modules are selected.The system functions are modeled as the logical nodes to realize the modeling of IED information.Field operation shows the feasibility of the developed OVS.