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    • 2. 发明授权
    • Digital fault-location calculation system
    • 数字故障定位计算系统
    • US4107778A
    • 1978-08-15
    • US768841
    • 1977-02-15
    • Yoshiji NiiTakayuki MatsudaYoichi YamazakiHaruo Nohara
    • Yoshiji NiiTakayuki MatsudaYoichi YamazakiHaruo Nohara
    • G01R31/08H02H3/40G06F15/20
    • G01R31/088
    • Provided is a digital fault-location calculation system which comprises first means for obtaining data including voltage and current information of a power transmission system subjected to fault-location calculation, a computer, and second means coupled between the first means and the computer for transferring the obtained data to the computer from the first means. The computer has at least two functions, one of which is the detection of occurrence of a faultin the transmission line and the other is the calculation of distance from the point of installation of the system to the fault point, in response to the data transferred through the second means and in accordance with predetermined processes. The distance to the fault point is computed by the other function of the computer only upon the detection of occurrence of a fault in the transmission line by the one function of the same.
    • 提供了一种数字故障定位计算系统,其包括第一装置,用于获得包括经历故障定位计算的电力传输系统的电压和电流信息的数据,计算机以及耦合在第一装置和计算机之间的第二装置,用于传送 从第一手段获得数据到计算机。 计算机具有至少两个功能,其中之一是检测传输线故障的发生,另一个是从系统安装到故障点的距离的计算,响应于通过 第二种手段并按照预定的过程。 只有在检测到传输线故障发生时,其计算机的距离才能由计算机的其他功能计算。
    • 4. 发明授权
    • Digital protective relaying systems
    • 数字保护中继系统
    • US4371908A
    • 1983-02-01
    • US345356
    • 1982-02-03
    • Fumio AndowTakayuki KobayashiRyotaro KondowYoshiji Nii
    • Fumio AndowTakayuki KobayashiRyotaro KondowYoshiji Nii
    • H02H3/30H02H7/26
    • H02H3/30H02H7/261
    • In a digital protective relaying device for protecting electric power transmission line including an electric station at each end thereof, and each electric station including at least one circuit breaker to be tripped by a protective relay for protecting the own station, a digital protective relay provided with a computer is further provided at each end so as to receive electrical data in digital form from the electric stations for operating in an ordinary protective operation. As a control condition occurs in one station, the condition is sent to a digital protective relay provided at the other end of the transmission line, thereby changing the operational steps of the computer included in the protective relay.
    • 在一种数字保护继电装置中,用于保护在其每一端包括电站的电力输电线,并且每个电站包括至少一个断路器,以便由用于保护本站的保护继电器跳闸;数字保护继电器, 在每一端进一步设置计算机,以便从电站接收数字形式的电子数据,以便在普通的保护操作中操作。 由于在一个站中发生控制状况,因此将该条件发送到在传输线的另一端提供的数字保护继电器,从而改变保护继电器中包括的计算机的操作步骤。