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CN107345995A 一种组合电器超声波检测抗干扰屏蔽方法 无效 - 驳回

一种组合电器超声波检测抗干扰屏蔽方法
摘要：
本发明涉及一种组合电器超声波检测抗干扰屏蔽方法，其技术特点包括将超声波传感器固定在组合电器本体上并通过信号线与超声波检测仪器连接在一起，对组合电器进行超声波局放检测；发现检测数据异常时，在超声探头外部加装专用噪声屏蔽罩；再次对组合电器进行超声波局放检测，如果前后两次检测到的超声波数据无明显区别，则可认为超声波传感器接收到的信号来源于组合电器设备本体；如果加装专用噪声屏蔽罩后，超声波数值明显变小，则可认为此前超声波传感器检测到的信号来源于空间外部。本发明能够有效地避免外部噪声的干扰，有助于对设备内部缺陷的准确定位、定性，有效地提高了带电检测局放定位的准确性，为设备检修提供可行性指导意见。
摘要（英）：

The invention relates to an anti-interference shielding method for the ultrasonic detection of a combined electrical appliance. The method is characterized in that an ultrasonic sensor is fixed to the combined electrical appliance and is connected to an ultrasonic detection instrument through a signal line, the ultrasonic local discharge detection of the combined electrical appliance is carried out; when the abnormality of detection data is found, a special noise shielding cover is installed outside an ultrasonic probe; then the ultrasonic local discharge detection of the combined electrical appliance is carried out again, if the ultrasonic data detected in the two times have no obvious difference, a signal received by the ultrasonic sensor can be viewed to be from the combined electrical appliance body; and if an ultrasonic value is obviously reduced after installing the special noise shielding cover, the signal detected by the ultrasonic sensor can be viewed to be from the outside of a space. According to the method, the interference of external noise can be effectively avoided, the accurate positioning and quality determination of an equipment internal defect are helped, the accuracy of live detection local discharge positioning is effectively improved, and a feasible guidance is provided for equipment maintenance.

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