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    • 8. 再颁专利
    • Electric power system protection and control system
    • 电力系统保护和控制系统
    • USRE40037E1
    • 2008-01-29
    • US10322588
    • 2002-12-19
    • Osamu HasegawaYoshihiro ShirotaYasuo Kaino
    • Osamu HasegawaYoshihiro ShirotaYasuo Kaino
    • G08B21/00H02H3/00H02H7/26
    • H02H7/261H02H3/006
    • A Power system protection and control system has protection and control terminals that perform protection and control of a power system by operation of a plurality of CBs in response to state variables input from power system; and a power system monitoring and control host mutually connected in a fashion to permit data exchange through a transmission system (communication network) with protection and control terminals and that performs monitoring and control of power system in accordance with data transmitted from protection and control terminals. Protection and control terminals each has a correlation circuit that performs correlation of an operated CB and the cause of its operation, using information sent from protective relay circuit, CB control circuit, re-closure circuit and CB state receiving circuit when at least one of a plurality of CBs is operated, and a correlation result transmission circuit that transmits the result obtained by the correlation processing of this correlation circuit to power system monitoring and control host through transmission system. The power system monitoring and control host includes a correlation result transmission unit that receives and displays the correlation result transmitted through transmission system from correlation result transmission circuit, associated message file storage unit and CB operation display unit.
    • 电力系统保护和控制系统具有保护和控制终端,通过响应于从电力系统输入的状态变量来操作多个CB来对电力系统进行保护和控制; 以及以保护和控制终端通过传输系统(通信网络)进行数据交换的方式相互连接的电力系统监视和控制主机,并且根据从保护和控制终端发送的数据执行电力系统的监视和控制。 保护和控制终端各自具有使用从保护继电器电路,CB控制电路,再闭合电路和CB状态接收电路发送的信息来执行所操作的CB与其操作原因的相关性的相关电路,当至少一个 操作多个CB,以及相关结果发送电路,通过该相关电路将通过相关电路的相关处理获得的结果发送到电力系统监控主机通过传输系统。 电力系统监控主机包括相关结果发送单元,其从相关结果发送电路,相关消息文件存储单元和CB操作显示单元接收并显示通过传输系统发送的相关结果。
    • 10. 发明授权
    • Accident point locating system
    • 事故点定位系统
    • US06741916B1
    • 2004-05-25
    • US09709493
    • 2000-11-13
    • Katsuhiko SekiguchiYoshihiro Shirota
    • Katsuhiko SekiguchiYoshihiro Shirota
    • G05D1100
    • G01R31/088G01R31/085H02H3/042
    • An accident point locating system locates an accident point on a power transmission line. A digital protective control system has a plurality of digital protective controllers that receive state data representing a state of an electric power system and convert the same into corresponding digital state data. An absolute time acquiring means acquires an absolute time when the state data is sampled. A state data processing decides whether any malfunction occurred in the power transmission system on the basis of the digital state and executes a protective operation when it is decided that an accident occurred in the power transmission system. A recording device adds an absolute sampling time to the digital state data and records the digital state data with the absolute time. A digital data sending device provides the digital state data with the absolute time on a communication network. A display operating system connected to the communication network executes displaying operations to monitor the operation and condition of the digital protective controllers. The display operating system has a distance calculating device for calculating a distance between a control station and an accident point by using the plurality of digital state data with the absolute time received from the digital protective controllers and a display for displaying the output of the distance calculating device.
    • 事故点定位系统在输电线路上定位一个事故点。 数字式保护控制系统具有多个数字保护控制器,其接收表示电力系统的状态的状态数据并将其转换成相应的数字状态数据。 绝对时间获取装置获取状态数据被采样时的绝对时间。 状态数据处理基于数字状态来判定在动力传递系统中是否发生故障,并且当确定在动力传递系统中发生事故时执行保护操作。 记录装置将绝对采样时间添加到数字状态数据,并以绝对时间记录数字状态数据。 数字数据发送装置在通信网络上提供具有绝对时间的数字状态数据。 连接到通信网络的显示操作系统执行显示操作以监视数字保护控制器的操作和状态。 显示操作系统具有距离计算装置,用于通过使用从数字保护控制器接收到的绝对时间的多个数字状态数据来计算控制站和事故点之间的距离,以及显示器,用于显示距离计算的输出 设备。