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1. 发明授权

US4477855A Protecting system for transmission lines 失效
标题翻译：输电线路保护系统
公开(公告)号：US4477855A
公开(公告)日：1984-10-16
申请号：US396376
申请日：1982-07-08
申请人： Keizo Nakayama , Kazuo Seo
发明人： Keizo Nakayama , Kazuo Seo
IPC分类号： H01J37/34 , H02H1/00 , H02H3/02 , H02H3/06 , H02H9/04
CPC分类号： H01J37/3435 , H02H3/06 , H02H1/0061 , H02H3/023
摘要： Transmission lines have both their terminals connected with bus lines through breakers, respectively, and connected to earth through earth switches, respectively. Protecting relay devices are fed with not only the outputs of voltage transformers and current transformers but also the contact signals made coactive with the breakers and earth switches at the terminals considered. Those contact signals are transmitted through signal transmission devices to the other terminals, and the contact signals of the breakers and earth switches at the other terminals are transmitted. The protecting relay devices detect the fault of the transmission lines, if any, to trip the breakers and to confirm the open states of the breakers from the breaker contact signals of the terminals considered and the other terminals thereby to close the earth switches. These earth switches are opened after a suitable time period to confirm the open states thereof from their contact signals at the terminals considered and the other terminals thereby to reclose the breakers.
摘要翻译：传输线分别通过断路器与总线连接，并分别通过接地开关与地线相连。保护继电器装置不仅具有电压互感器和电流互感器的输出，而且还将所接收的端子与断路器和接地开关共同作用。这些接触信号通过信号传输装置发送到其他终端，并且传输其他终端处的断路器和接地开关的接触信号。保护继电器装置检测传输线路的故障（如果有的话）使断路器跳闸，并从所考虑的端子和其他端子的断路器触点信号确认断路器的断开状态，从而关闭接地开关。这些接地开关在合适的时间段之后打开，以从其所考虑的端子处的接触信号和其他端子确认其断开状态，从而重新闭合断路器。

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