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实用新型
CN203241505U 便携式电缆绝缘带电检测及定位仪 失效 - 权利终止 转让

便携式电缆绝缘带电检测及定位仪
摘要：
本实用新型公开了便携式电缆绝缘带电检测及定位仪，采用近端和远端两个脉冲电流传感器分别嵌套在电缆两端屏蔽层接地线上获取电缆中局部放电产生的脉冲电流信号，数据服务器与近端局放采集终端采用485通讯总线连接，数据服务器与近端GPRS无线传输装置通过RS232串行总线连接，与近端GPS授时装置采用RS232串行总线连接。远端局放采集终端与远端GPRS无线传输装置通过RS232串行总线连接，与远端GPS授时装置采用RS232总线连接。两个局放采集终端通过GPS授时系统获取时间，同时启动高速数据采集，数据服务器通过两端数据联合判断，避免单一传感器检测误差，同时通过局部放电信号到达电缆两端的时间差来定位局部放电源的位置。
摘要（英）：

The utility model discloses a portable cable insulation live detector and locator. A near-end pulse current sensor and a far-end pulse current sensor are in sleeve connection with shielding layer ground wires at two ends of a cable respectively to pick up pulse current signals generated by partial discharge of the cable. A data server is connected to a near-end partial discharge acquisition terminal via a 485 communication bus, to a near-end GPRS wireless transmission device via an RS232 serial bus, and to a near-end GPS timing device via an RS232 serial bus. A far-end partial discharge acquisition terminal is connected to a far-end GPRS wireless transmission device via an RS232 serial bus and to a far-end GPS timing device via an RS232 serial bus. The two partial discharge acquisition terminals obtain time from the GPS timing devices and start high-speed data acquisition simultaneously. The data server combines data from the two ends for determination to avoid detection errors caused by a single sensor. Meanwhile, the data server locates a partial discharge source according to a difference between the times for a partial discharge signal to reach two ends of the cable.

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