公开(公告)号：US4675773A

公开(公告)日：1987-06-23

申请号：US795265

申请日：1985-11-05

申请人： Shingo Shirakawa ,  Seiichi Maruyama ,  Seizo Nakano ,  Eichi Okamoto ,  Kenji Kohara

发明人： Shingo Shirakawa ,  Seiichi Maruyama ,  Seizo Nakano ,  Eichi Okamoto ,  Kenji Kohara

IPC分类号： H02H3/02 ,  H01T4/02 ,  H01T15/00 ,  H02H1/00 ,  H02H3/00 ,  H02H7/22 ,  H02H7/24 ,  H02H7/26

CPC分类号： H02H7/22 ,  H02H1/0069

摘要： A transmission line protection system arranged such that a leakage current detector is provided at an end of an insulating device such as an insulator connected at one end to a corresponding one of arms of a steel tower and connected at the other end to a transmission line of each phase, thereby detecting an arrester leakage current flowing in the transmission line of each phase, an output signal of the leakage current detector being led to a repeater through an optical fiber cable, an output of the repeater being transferred to a control/supervisory board in a substation through an optical fiber cable. In the control/supervisory board, preferably, a received digital signal which was converted from an analog signal at said leakage current detector is displayed on a cathode ray tube. In such an arrangement, it is possible to smoothly perform supervision of the status of the transmission lines without causing maloperations due to influences from the transmission lines.

摘要翻译： 一种传输线路保护系统，其布置成使得漏电流检测器设置在诸如绝缘装置的端部处，绝缘装置的一端连接到钢塔的相应一个臂并在另一端连接到传输线 从而检测在每相的传输线中流过的避雷器泄漏电流，漏电流检测器的输出信号通过光缆被引导到中继器，中继器的输出被传送到控制/监控板 在变电站通过光缆。 在控制/监控板中，优选地，在阴极射线管上显示从所述泄漏电流检测器的模拟信号转换的接收数字信号。 在这种布置中，可以平滑地执行传输线状态的监视，而不会由于来自传输线的影响而导致错误操作。