基于超声波法的变压器重症监护系统研制及应用

变压器局部放电超声波检测技术作为一种有效的绝缘诊断技术,目前已在超特高压变电站变压器故障诊断中广泛应用。借鉴重症监护医学领域技术,研制了基于超声波法的变压器重症监护系统,并应用于存在故障隐患或危急停运的变压器设备上。该系统以变压器局部放电超声波信号特征量为基础,结合现有的在线或离线特征量,如油色谱在线监测、数据采集与监视控制(SCADA)运行负荷等实时数据,采用数据融合的方法综合分析,实时检测并准确定位局部放电源。现场应用情况表明,该系统能够有效检测变压器内部放电性故障,为变压器状态诊断及检修策略的制定提供有效支撑。

Development and Application of Transformer Intensive Care System Based on Ultrasonic Method

Ultrasonic testing technology for transformer partial discharge as an effective insulation diagnosis technology,has been widely used in UHV substation.By reference to intensive care technology,the transformer intensive monitoring system based on ultrasonic method is developed and applied in the transformer equipment with hidden trouble or emergency shutdown.Based on the characteristic data of partial discharge ultrasonic signal,this system combines real-time data of on-line or off-line characteristic data,such as DGA and SCADA operation load.Data fusion method is adopted to detect and locate the partial discharge source in real time.The field application shows that the system can detect the internal discharge fault of the transformer,providing effective support for the diagnosis and maintenance strategy of transformers.