Remote monitor control system
    6.
    发明授权
    Remote monitor control system 失效
    远程监控系统

    公开(公告)号:US4806929A

    公开(公告)日:1989-02-21

    申请号:US32446

    申请日:1987-03-31

    摘要: A remote monitor control system comprises a single master station having the function of communication in synchronism with communication clocks for generating various commands required for monitor and control, and a plurality of terminal stations having the function of communication in synchronism with the communication clocks for receiving data related to objects of monitor and controlling objects of control. The terminal stations are caused to respond at different time points sequentially predetermined different times after transmission from the master station. When a sync signal fails to be received for a predetermined length of time, the predetermined time set for a particular station is shortened.

    摘要翻译: 远程监视器控制系统包括具有与用于生成监视和控制所需的各种命令的通信时钟同步的通信功能的单个主站以及具有与用于接收数据的通信时钟同步的通信功能的多个终端站 与监控对象和控制对象有关。 使终端在从主站发送之后,在不同的时间点顺序地预定的不同时间进行响应。 当同步信号在预定长度的时间内不能被接收时,为特定站设置的预定时间被缩短。

    Power stoppage minimizing systems for distribution lines and methods of
using a distribution line
    9.
    发明授权
    Power stoppage minimizing systems for distribution lines and methods of using a distribution line 失效
    电力停止最小化配电线路系统和使用配电线路的方法

    公开(公告)号:US5579195A

    公开(公告)日:1996-11-26

    申请号:US207664

    申请日:1994-03-09

    CPC分类号: H02H7/262

    摘要: A power stoppage minimizing system for a distribution line and a method of using a distribution line minimize a power stoppage section and a power stoppage time when a short circuit occurs in the distribution line, and employs a first and a second distribution line each connected through a circuit breaker to a corresponding bus and each having switches in position thereon; a normally open tie point switchgear provided between adjacent ends of the first and second distribution lines; a protective relay for opening, when a short circuit has occurred, the circuit breaker a fixed time after the occurrence of the short circuit on the first distribution line; a first unit for opening a switch on the side of a power source and nearest a point where the short circuit has occurred; a second unit for opening, after the switch is opened by the first unit, a switch on the side of a load nearest the switch opened by the first unit; and a third unit for closing the tie point switchgear after the opening of the switch by the second unit, the opening of the switch by the first unit being made within a fixed interval of time for the protective relay. Thus, the short circuit section is located and the switches before and after the short circuit section are opened. The tie point switchgear is then closed to thereby minimize the power stoppage section and time when the short circuit has occurred.

    摘要翻译: 用于配电线路的停电最小化系统和使用配电线路的方法在分配线路中发生短路时最小化停电部分和停电时间,并且采用第一和第二配电线路,每个分配线路通过 断路器到相应的总线,并且每个断路器具有位于其上的开关; 设置在所述第一和第二配线的相邻端之间的常开连接点开关装置; 一个保护继电器,当发生短路时,断路器在第一配线上发生短路之后的固定时间; 用于打开电源侧的开关并且最靠近发生短路的点的第一单元; 第二单元,在由第一单元打开开关之后,打开最靠近由第一单元打开的开关的负载侧的开关; 以及第三单元,用于在通过第二单元打开开关之后关闭连接点开关装置,第一单元的开关的开启在保护继电器的固定时间间隔内被制成。 因此,短路部分被定位,并且短路部分之前和之后的开关被打开。 然后将连接点开关装置关闭,从而最小化停电部分和发生短路时的时间。