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公开(公告)号：US4695931A
公开(公告)日：1987-09-22
申请号：US867929
申请日：1986-05-29
申请人： Mitsuru Yamaura , Norio Fujisawa
发明人： Mitsuru Yamaura , Norio Fujisawa
摘要： A voltage/frequency converter is formed of a V/F converter circuit which converts an input potential into a frequency corresponding to the instantaneous value of the input potential, and a difference detection circuit which generates an output corresponding to the difference between the output frequency of the V/F converter circuit and a predetermined reference frequency. The V/F converter circuit is controlled according to the level of the output from the difference detection circuit, thereby reducing the deviation of the output frequency of said V/F converter circuit from the reference frequency.
摘要翻译： 电压/频率转换器由V / F转换器电路形成，V / F转换器电路将输入电位转换成与输入电位的瞬时值对应的频率，差分检测电路产生与输出电压的输出频率 V / F转换器电路和预定参考频率。 V / F转换器电路根据差分检测电路的输出电平进行控制，从而减小V / F转换器电路的输出频率与参考频率的偏差。
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2.发明授权
公开(公告)号：US4591992A
公开(公告)日：1986-05-27
申请号：US564680
申请日：1983-12-23
申请人： Mitsuru Yamaura
发明人： Mitsuru Yamaura
摘要： In direction identification for a close-in fault when the voltage becomes very small, direction of the fault is determined from the discriminant D given by:D=V.sub.k1 i.sub.k2 -V.sub.k3 i.sub.k4where V.sub.k1, V.sub.k3 represent sample values of the voltage at time points k1, k3, and i.sub.k2, i.sub.k4 represent either sample values of the current at time points k2, k4 or such sample values minimum current component values corresponding to pre-fault power flow. Here, k1=n-m-M; k2=n; k3=n-m; k4=n-M, where m represents the number of sampling operations over an interval equal to a multiple of half cycle of the system frequency, M represents an integer, and n represents a sampling time point. A signal for use, e.g., as a condition for tripping a circuit breaker is produced when the fault is found to be in the direction of the protection zone.
摘要翻译： 在电压变得非常小的情况下，在接近故障的方向识别中，从由D = Vk1ik2-Vk3ik4给出的判别式D确定故障方向，其中Vk1，Vk3表示在时间点k1，k3处的电压的采样值 ，ik2，ik4表示时刻k2，k4处的电流的采样值，或与故障前功率流对应的这样的采样值最小电流分量值。 这里，k1 = n-m-M; k2 = n; k3 = n-m; k4 = n-M，其中m表示在等于系统频率的半周期的倍数的间隔上的采样操作的数量，M表示整数，n表示采样时间点。 当发现故障处于保护区域的方向时，产生用作例如用于跳闸断路器的条件的信号。
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3.发明授权
公开(公告)号：US4328551A
公开(公告)日：1982-05-04
申请号：US130569
申请日：1980-03-14
申请人： Mitsuru Yamaura , Ryotaro Kondow , Kunio Matsuzawa
发明人： Mitsuru Yamaura , Ryotaro Kondow , Kunio Matsuzawa
IPC分类号： H02H3/02 , G06F1/30 , G06F11/14 , G06F12/16 , G11C14/00 , G11C16/04 , H02H3/00 , H03K3/356 , G06F15/56
CPC分类号： G11C14/00 , G06F11/1441 , G11C16/0466 , H02H3/00 , H03K3/356008
摘要： In a protective relaying apparatus for an electric power transmission system and the like there is provided a nonvolatile memory device in which various values required for protection of the system are written electrically. An input device designates addresses in the memory device and memorizes values in the addresses under control of a control device. A digital processing device carries out the protective operations for the electric power transmission system based on the values thus set in the non-volatile memory device.
摘要翻译： 在用于电力传输系统等的保护性中继装置中，提供了一种非易失性存储装置，其中，电气地写入保护系统所需的各种值。 输入装置指定存储装置中的地址，并存储控制装置的控制下的地址中的值。 数字处理装置基于在非易失性存储装置中设定的值，对电力传输系统进行保护作业。
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公开(公告)号：US4541058A
公开(公告)日：1985-09-10
申请号：US419473
申请日：1982-09-17
申请人： Fumio Andow , Mitsuru Yamaura , Ryotaro Kondow
发明人： Fumio Andow , Mitsuru Yamaura , Ryotaro Kondow
CPC分类号： H02H3/40 , Y10T307/832
摘要： A protective relay system for protecting a power system includes a selection circuit, a comparing circuit, and a data processing unit. The selection circuit time-sequentially switches a plurality of input signals having electrical quantities from the power system under control of the data processing unit and applies the input signals to the comparing circuit. The comparing circuit applies to the data processing unit a discriminated output signal representing the result of the comparing of a level of a signal having an electrical quantity and obtained from the input signals to the comparing circuit with a reference level. At a time point upon lapse of a time corresponding to an electrical angle of 90.degree. of the input signal, for example, after the logical level of a first discriminated output signal corresponding to a first controlled state of the selection circuit has been changed, the comparing circuit produces a second discriminated output signal corresponding to a second controlled state of the selection circuit different from the first controlled state. The data processing unit determines the level of a protection output signal according to a logical level of the second discriminated output signal.
摘要翻译： 用于保护电力系统的保护继电器系统包括选择电路，比较电路和数据处理单元。 选择电路在数据处理单元的控制下时间顺序地切换具有来自电力系统的电量的多个输入信号，并将输入信号施加到比较电路。 比较电路向数据处理单元应用表示将具有电量并且从输入信号获得的信号的电平与比较电路的电平与参考电平进行比较的判别输出信号。 例如，在与输入信号的电角度90度相对应的时间点的时间点，在对应于选择电路的第一受控状态的第一鉴别输出信号的逻辑电平已经改变之后， 比较电路产生对应于不同于第一受控状态的选择电路的第二受控状态的第二鉴别输出信号。 数据处理单元根据第二判别输出信号的逻辑电平来确定保护输出信号的电平。
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公开(公告)号：US4314199A
公开(公告)日：1982-02-02
申请号：US87771
申请日：1979-10-24
CPC分类号： G01R31/088
摘要： A fault component current is obtained in response to a fault at a fault point within a protective section on a transmission line at one end of the protective section. Assuming that a phase difference between the fault component current and a fault point current flowing through the fault point is known, the fault point current is obtained on the basis of the fault component current and the phase difference. Then, a voltage at an assumed fault point is obtained by using voltage and current at the one end of the protective section and the line constants of the protective section. An assumed fault point is then obtained to permit the voltage at the assumed fault point to be in phase with the fault point current. The assumed fault point is assumed to be a true fault point.
摘要翻译： 响应于在保护部分的一端的传输线上的保护部分内的故障点处的故障，获得故障部件电流。 假设故障分量电流与故障点之间的故障点电流之间的相位差是已知的，则基于故障分量电流和相位差获得故障点电流。 然后，通过使用保护部分的一端的电压和电流以及保护部分的线常数来获得假定故障点处的电压。 然后获得假定的故障点，以允许假定故障点处的电压与故障点电流同相。 假设假定点是真正的故障点。
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公开(公告)号：US4809305A
公开(公告)日：1989-02-28
申请号：US886894
申请日：1986-07-18
申请人： Mitsuru Yamaura
发明人： Mitsuru Yamaura
CPC分类号： H04L7/041
摘要： According to a method of this invention, information and check bits in one frame of information to be transmitted are divided into two fields (i.e., a first field not requiring addition of fixed bits, and a second field requiring addition of fixed bits). The characteristic inherent to the bit pattern formed of a sync signal and the second field does not appear in the first field so that the sync signal can be discriminated. The number of fixed bits inserted in one frame can thus be decreased, and transmission efficiency can be improved.
摘要翻译： 根据本发明的方法，要发送的一帧信息中的信息和校验位被分成两个字段（即，不需要添加固定比特的第一个字段和需要添加固定比特的第二个字段）。 由同步信号和第二场形成的位模式固有的特性不会出现在第一场中，从而可以鉴别同步信号。 因此可以减少插入到一帧中的固定比特数，并且可以提高传输效率。
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公开(公告)号：US4709295A
公开(公告)日：1987-11-24
申请号：US673419
申请日：1984-11-20
申请人： Mitsuru Yamaura , Junichi Inagaki , Hachidai Ito
发明人： Mitsuru Yamaura , Junichi Inagaki , Hachidai Ito
摘要： In a digital protective relay system for protecting an electric power system, a first digital operation device receives digital data on the electrical quantities of the power system and performs an operation on the digital data to produce an intermediate result, which is then stored in a memory unit. A second digital operation device reads the intermediate result from the memory unit and performs an operation on the intermediate result to produce a final result. The memory unit is so connected as to permit writing by the first operation device only, and to permit reading by the second operation device only.
摘要翻译： 在用于保护电力系统的数字保护继电器系统中，第一数字操作装置接收关于电力系统的电量的数字数据，并对数字数据执行操作以产生中间结果，然后存储在存储器 单元。 第二数字操作装置从存储器单元读取中间结果，并对中间结果执行操作以产生最终结果。 存储器单元被连接以允许仅由第一操作装置写入，并且仅允许由第二操作装置读取。
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公开(公告)号：US4470093A
公开(公告)日：1984-09-04
申请号：US435547
申请日：1982-10-21
申请人： Mitsuru Yamaura
发明人： Mitsuru Yamaura
CPC分类号： H02H7/261
摘要： In a protective relay system for an electric power system with relay devices at respective terminals, a synchronous signal is transmitted from each terminal upon occurrence of a fixed time relation with the clock signal subsequent to receipt of a synchronous signal from the opposite terminal. The synchronous signal is associated with time data indicating the relative time of receipt of the synchronous signal with reference to the occurrence of the clock signal. The time deviation of occurrence of the clock signal at each terminal with reference to occurrence of the clock signal at the opposite terminal is detected in accordance with the time data transmitted from the opposite terminal, the time point at which the synchronous signal from the opposite terminal is received, the time point at which the preceding transmission of the synchronous signal toward the opposite terminal took place and the clock signal at each terminal, and is used for phase-adjustment of the clock signal at each terminal.
摘要翻译： 在具有各个终端的中继装置的电力系统的保护继电器系统中，在从相对端子接收到同步信号之后，与时钟信号发生固定的时间关系，从各个终端发送同步信号。 参考时钟信号的出现，同步信号与指示同步信号的相对接收时间的时间数据相关联。 根据从相对端发送的时间数据，检测来自对端的同步信号的时间点，检测出在相对端发生时钟信号的时钟信号的出现时间偏差 接收到发送同步信号的前一个发送到相对终端的时间点和每个终端处的时钟信号的时间点，并且用于每个终端处的时钟信号的相位调整。
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公开(公告)号：US4419737A
公开(公告)日：1983-12-06
申请号：US157340
申请日：1980-06-09
CPC分类号： H02H3/006
摘要： Digital setting value data, having been stored in a first non-volatile memory in response to the operation of a first switch, is transferred to and memorized in a second non-volatile memory. Stored setting value data is read out from at least one of the first and second memories under the control of an address control circuit and coupled to a digital processing section for carrying out digital arithmetic processing for protective control in the processor.
摘要翻译： 已经存储在第一非易失性存储器中以响应于第一开关的操作的数字设定值数据被传送到并存储在第二非易失性存储器中。 存储设置值数据在地址控制电路的控制下从第一和第二存储器中的至少一个读出，并耦合到数字处理部分，用于对处理器中的保护控制进行数字运算处理。
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公开(公告)号：US4371926A
公开(公告)日：1983-02-01
申请号：US127844
申请日：1980-03-06
CPC分类号： G06F11/3471 , G06F11/348 , G06F13/28
摘要： In data processing apparatus in which address and data are transferred by means of DMA through an address bus and a data bus, a coincidence circuit determines whether the address on the address bus coincides with an address designated by an address designation device, a latch circuit latches the data on the data bus when the coincidence is detected and stores the latched data, and an indicating device indicates the data stored in the latch circuit.
摘要翻译： 在通过地址总线和数据总线通过DMA传送地址和数据的数据处理装置中，符合电路确定地址总线上的地址是否与由地址指定装置指定的地址一致，锁存电路锁存 在检测到符合时的数据总线上的数据，并存储锁存的数据，并且指示装置指示存储在锁存电路中的数据。
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