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发明公开
CN109521337A 一种基于超声法的聚合物电树枝特性测量装置及方法 无效 - 驳回

一种基于超声法的聚合物电树枝特性测量装置及方法
摘要：
本发明公开了一种基于超声法的聚合物电树枝特性测量装置及方法，装置包括交流电压源、测试单元和信号采集单元；测试单元由针电极、被测试样和接地板组成；信号采集单元由计算机、数据采集装置、光学显微镜、光源和超声传感器组成；被测试样放置于接地板上方，针电极的顶端插入被测试样内，针电极的尾端依次连接保护电阻和交流电压源的正极，交流电压源的负极和接地板均接地，超声传感器设置于接地板底部，超声传感器依次与数据采集装置和计算机相连，光源和光学显微镜分别相对的设置于被测试样的两侧，光学显微镜与计算机相连。本发明可有效反映绝缘内电树枝状态，为电缆附件绝缘设计及运行提供实验和理论依据。
摘要（英）：

The invention discloses a device and a method for measuring the characteristics of a polymer electric tree branch based on an ultrasonic method. The device comprises an AC voltage source, a test unitand a signal acquisition unit. The test unit is composed of a needle electrode, a tested sample and a grounded plate. The signal acquisition unit is formed by a computer, a data acquisition device, anoptical microscope, a light source and an ultrasonic sensor. The tested sample is placed above the grounded plate, a tip of the needle electrode is inserted into the tested sample, a tail end of theneedle electrode is sequentially connected to a protection resistor and a positive electrode of the AC voltage source, a negative pole of the AC voltage source and the grounded plate are grounded, theultrasonic sensor is arranged at the bottom of the grounded plate, the ultrasonic sensor is sequentially connected to the data acquisition device and the computer, the light source and the optical microscope are respectively arranged on two sides of the tested sample, and the optical microscope is connected to the computer. The device can effectively reflect the state of the electric branch inside an insulation piece, and experimental and theoretical bases are provided for the insulation design and operation of a cable accessory.

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