公开(公告)号：US4073009A

公开(公告)日：1978-02-07

申请号：US717939

申请日：1976-08-26

申请人： Fumio Andow ,  Tetsuo Matsushima ,  Minoru Iwasaki

发明人： Fumio Andow ,  Tetsuo Matsushima ,  Minoru Iwasaki

IPC分类号： G01R19/04 ,  G01R19/25 ,  H02H3/02 ,  G06F15/20

CPC分类号： G01R19/04

摘要： The apparatus comprises a sampling hold circuit for sampling the amplitude of a sinusoidal wave at a predetermined frequency, a data sample extracting circuit for extracting two data samples at two points immediately before and after the peak value of the sinusoidal wave, and an operation circuit responsive to the absolute values of the two data samples for calculating the amplitude value of the sinusoidal wave.

摘要翻译： 该装置包括用于以预定频率对正弦波的振幅进行采样的采样保持电路，用于在正弦波的峰值之前和之后的两个点提取两个数据样本的数据样本提取电路，以及响应于 与用于计算正弦波的振幅值的两个数据样本的绝对值相关。

公开(公告)号：US4073008A

公开(公告)日：1978-02-07

申请号：US717942

申请日：1976-08-26

申请人： Fumio Andow ,  Tetsuo Matsushima ,  Minoru Iwasaki

发明人： Fumio Andow ,  Tetsuo Matsushima ,  Minoru Iwasaki

IPC分类号： G01R19/04 ,  G06F15/20 ,  H03K5/20

CPC分类号： G01R19/04

摘要： The amplitude value of a sinusoidal wave is calculated by operating means which processes absolute values of two data samples which are sampled from the sinusoidal wave at two points spaced 90.degree. electrical degrees apart thereby producing an electrical signal proportional to the amplitude value. The operation means comprises a comparator, a combination of an adder and a subtractor, or a combination of a comparator and an adder. The output of the comparator or the combination is multiplied with a predetermined coefficient and then added together to produce said signal.

摘要翻译： 正弦波的振幅值通过操作装置计算，该装置处理两个数据采样的绝对值，这两个数据样本是从正弦波在两个间隔90°电角度的两个点采样的，从而产生与振幅值成比例的电信号。 操作装置包括比较器，加法器和减法器的组合，或比较器和加法器的组合。 将比较器或组合的输出乘以预定系数，然后相加在一起以产生所述信号。

公开(公告)号：US4825326A

公开(公告)日：1989-04-25

申请号：US60351

申请日：1987-06-10

申请人： Fumio Andow ,  Noriyoshi Suga

发明人： Fumio Andow ,  Noriyoshi Suga

IPC分类号： H02H3/28 ,  H02H3/44 ,  H02H7/22 ,  H02H3/08

CPC分类号： H02H3/283 ,  H02H7/22 ,  H02H3/44

摘要： In differential function calculation processing, a value of differential function f(d) is calculated using differences between a plurality of predetermined number p of differential current data Dd sampled at different sampling times. The differential current data is data obtained from differential current Id or a sum of data Dj (j=1 to n where n is the number of the respective terminal currents) obtained from respective terminal currents Ipj. In restraint data calculation processing, restraint data Dr is calculated using respective terminal current data Dj sampled at the same sampling time. In restraint function calculation processing, a value of restraint function f(r) is calculated using differences between a plurality of predetermined number p of restraint data Dr sampled at different sampling times. Then, in comparison processing, the value of differential function f(d) is compared with the value of restraint function f(r). If the value of differential function f(d) is smaller than a value, modified by a predetermined relationship, of restraint function f(r), an inhibit output is generated in the comparison processing. Differential relay processing inhibits a trip operation of a circuit breaker by the inhibit output from the comparison processing. The differential relay processing is so controlled as to execute the trip operation when the inhibit output is not present.

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

IPC分类号： H02H3/40 ,  G01R19/00 ,  H02H3/26

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。

公开(公告)号：US4507700A

公开(公告)日：1985-03-26

申请号：US428408

申请日：1982-09-29

申请人： Fumio Andow ,  Yuji Okita ,  Noriyoshi Suga

发明人： Fumio Andow ,  Yuji Okita ,  Noriyoshi Suga

IPC分类号： H02H3/40 ,  H02H3/26

CPC分类号： H02H3/40

摘要： A protective relaying system is disclosed which detects a fault in an electric power system having a circuit breaker by using a current and a voltage of the electric power system. The protective relaying system includes an input conversion/unit adapted to receive a first and a second input signals corresponding to said current and voltage, for converting the magnitude and/or the phase of the first and second input signals to produce least two electrical quantities a first electrical quantity and a third electrical quantity, and for outputting the second input signal without conversion as a second electrical quantity.The protective relaying system also includes a comparing unit connected to receive first, second and third electrical quantities from the input conversion unit for comparing the first and second electrical quantities to produce a first logical state and comparing the third and fourth electrical quantities to produce a second logical state signal cyclically. The protective relaying system further includes a digital data processing unit for judging whether a specified logical condition between the first and second logical state signals holds for a predetermined number of times corresponding to a predetermined electrical angle, and for producing a protection relay output signal based on the judging result. The protection relay output signal is adapted for using to trip the circuit breaker.

摘要翻译： 公开了一种通过使用电力系统的电流和电压来检测具有断路器的电力系统的故障的保护继电器系统。 保护性中继系统包括适于接收对应于所述电流和电压的第一和第二输入信号的输入转换/单元，用于转换第一和第二输入信号的幅度和/或相位以产生最少两个电量a 第一电量和第三电量，并且用于输出不转换的第二输入信号作为第二电量。 保护性中继系统还包括一个比较单元，其被连接以从输入转换单元接收第一，第二和第三电量，用于比较第一和第二电量以产生第一逻辑状态，并比较第三和第四电量以产生第二 逻辑状态信号循环。 保护性中继系统还包括数字数据处理单元，用于判断第一和第二逻辑状态信号之间的指定逻辑条件是否保持预定次数对应于预定电角度，并且用于产生基于 判断结果。 保护继电器输出信号适用于使断路器跳闸。

公开(公告)号：US4371908A

公开(公告)日：1983-02-01

申请号：US345356

申请日：1982-02-03

申请人： Fumio Andow ,  Takayuki Kobayashi ,  Ryotaro Kondow ,  Yoshiji Nii

发明人： Fumio Andow ,  Takayuki Kobayashi ,  Ryotaro Kondow ,  Yoshiji Nii

IPC分类号： H02H3/30 ,  H02H7/26

CPC分类号： H02H3/30 ,  H02H7/261

摘要： 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.

摘要翻译： 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。

公开(公告)号：US4370571A

公开(公告)日：1983-01-25

申请号：US109552

申请日：1980-01-04

申请人： Fumio Andow ,  Norio Fujisawa

发明人： Fumio Andow ,  Norio Fujisawa

IPC分类号： H02H3/02 ,  G11C5/14 ,  G11C27/02

CPC分类号： G11C5/14 ,  Y10T307/707

摘要： A relay device is disclosed which protects and controls an electric power line by detecting an electrical quantity carried by the electric power line. The relay device includes a rectifying circuit connected to the electric power line. The output of the rectifying circuit is supplied to a peak value holding circuit which stores the peak value of the output of the rectifying device during each predetermined period under control of a resetting pulse. The output of the peak value holding circuit is supplied to a detecting circuit having a predetermined threshold level.

摘要翻译： 公开了一种通过检测电力线承载的电量来保护和控制电力线的继电器装置。 继电器装置包括与电力线连接的整流电路。 整流电路的输出被提供给峰值保持电路，该峰值保持电路在复位脉冲的控制下在每个预定周期期间存储整流装置的输出的峰值。 峰值保持电路的输出被提供给具有预定阈值电平的检测电路。