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    • 77. 发明公开
    • PROTECTION CONTROL SYSTEM AND MERGING UNIT
    • 佐治亚州立大学学报
    • EP2779341A1
    • 2014-09-17
    • EP12847891.4
    • 2012-09-11
    • Kabushiki Kaisha Toshiba
    • OHTOMO, YuISHIBASHI, Akira
    • H02H3/05H02H3/02H02J13/00
    • H02H1/0007H02H1/0061H02H7/261H02J13/0006Y02E60/725Y02E60/74Y04S10/20Y04S10/30
    • [Problem] Embodiments of the present invention make it an object to provide a protection and control system, a protection and control device, and a merging unit which can suppress the hardware amount in the protection and control system to which a process bus is applied.
      [Solving Means]
      A protection and control system in the embodiments of the present invention includes a merging unit which digitally converts electric variables to output as electric variable information, and a plurality of protection and control devices each of which outputs main trip information when that a system fault occurs in a zone to be protected is judged based on the electric variable information and a relay characteristic.
      In addition, when the merging unit judges that the system fault occurs in the zone to be protected based on the electric variable information and a plurality of the relay characteristics which are predetermined as respective fault detection relays of the protection and control devices, the merging unit holds FD trip information, and judges whether or not to open a circuit breaker or a switch based on the FD trip information and the main trip information.
    • 本发明的实施例的目的在于提供一种保护和控制系统,保护和控制装置以及可以抑制应用了过程总线的保护和控制系统中的硬件量的合并单元。 解决方案本发明的实施例中的保护和控制系统包括将电变量数字地转换为输出作为电变量信息的合并单元,以及多个保护和控制装置,每个保护和控制装置输出主行程信息, 基于电变量信息和继电器特性来判断在要保护的区域中的系统故障。 另外,当合并单元基于电可变信息和预定为保护和控制装置的各个故障检测继电器的多个继电器特性来判断系统故障发生在要被保护的区域中时,合并单元 保持FD行程信息,并且基于FD行程信息和主行程信息判断是否打开断路器或开关。