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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
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.
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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
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。
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公开(公告)号：US5796630A
公开(公告)日：1998-08-18
申请号：US600935
申请日：1996-07-19
摘要： A protective relay system detects a first electric variable and a second electric variable of a power system to discriminate in a time series whether or not a fault portion of a line or equipment included in the power system exists within a predetermined range, so as to determine whether protection of the power system should be carried out. The system includes a digital filter for outputting a first difference electric variable data indicative of a difference between at least two sample data of plural sampling data of the first electric variable and a difference between at least two sample data of plural sample data of the second electric variable at plural sampling times of the time series. The system also includes an addition filter for outputting first and second additive electric variable data indicative of orthogonal vector data with respect to the first and second difference electric variable data. The system further includes a relay control unit for calculating controlled variables of a relay operation in the power system on the basis of the first and second difference electric variable data at a certain sampling time, so as to judge whether or not protection of the power system should be carried out.
摘要翻译： PCT No.PCT / JP95 / 01297 Sec。 371日期：1996年7月19日 102（e）日期1996年7月19日PCT提交1995年6月29日PCT公布。 出版物WO96 / 日期1996年1月18日保护继电器系统检测电力系统的第一电力变量和第二电力变量，以便以时间序列来区分电力系统中包括的线路或设备的故障部分是否存在于预定范围内 ，以确定是否应保护电力系统。 该系统包括数字滤波器，用于输出表示第一电变量的多个采样数据的至少两个采样数据与第二电变量的多个采样数据的至少两个采样数据之间的差的第一差分电可变数据 在时间序列的多个采样时间可变。 该系统还包括加法滤波器，用于输出相对于第一和第二差分电变量数据指示正交矢量数据的第一和第二加法电可变数据。 该系统还包括一个继电器控制单元，用于在一定的采样时间的基础上，根据第一和第二差分电变量数据计算电力系统中的继电器操作的受控变量，以便判断电力系统是否被保护 应该进行
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公开(公告)号：US4774621A
公开(公告)日：1988-09-27
申请号：US760562
申请日：1985-07-30
申请人： Fumio Andow
发明人： Fumio Andow
CPC分类号： H02H1/0053 , H02H3/38 , F02B2075/027
摘要： In an apparatus for producing data concerning a fault in an AC electric power system, an AC electric quantity is sampled at a frequency which is a multiple of the rated frequency of the AC electric quantity, and is stored, for later use as predicted values, and an arithmetic operation is performed on the sample values to produce a data concerning a fault in the power system. The predicted values are determined by the following equation: ##EQU1## where l and m represent natural numbers;n represents a natural number;Y.sub.m represents the predicted value for a specific time point;S.sub.o represents a sample value in advance of the specific time point by m/2 times the rated period;S.sub.l represents a value equal to (-1).sup.l times the sample value at a time point in advance of the specific time point by l/2 times the rated period; andK.sub.o and K.sub.l represent constants satisfying the following relationship: ##EQU2## where .epsilon. represents the permissible range of error for the predicted value which may occur when the power system is operating at the rated frequency.
摘要翻译： 在用于生成关于交流电力系统中的故障的数据的装置中，以交流电量的额定频率的倍数的频率对交流电量进行采样，并且被存储以备以后用作预测值， 对样本值进行算术运算，生成与电力系统有关的故障的数据。 预测值由以下等式确定：
其中l和m表示自然数; n表示自然数; Ym表示特定时间点的预测值; 因此，表示在特定时间点之前的采样值×额定周期的m / 2倍; S1表示在特定时间点之前的时间点的采样值的等于（-1）的倍数乘以额定周期的1/2倍的值; Ko和Kl表示满足以下关系的常数： 其中，epsilon表示当电力系统以额定频率工作时可能发生的预测值的允许误差范围。 -
公开(公告)号：US4511981A
公开(公告)日：1985-04-16
申请号：US428327
申请日：1982-09-29
申请人： Fumio Andow , Masuo Nakashima
发明人： Fumio Andow , Masuo Nakashima
CPC分类号： H02H3/40
摘要： A protective relaying system 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 input conversion unit adapted for connecting the electric power system to receive a first and a second input signals corresponding to the current and the voltage and for converting the magnitude and/or the phase of the first and second input signals to produce a first, a second and a third electrical quantities. The protective relaying system also includes comparing unit connected to receive the first, second and third electrical quantities, for comparing the first and second electrical quantities to produce a first logical state signal, and comparing the third and a fourth electrical quantities to produce a second logical state signal cyclically, and for producing a logical state signal including the first and second logical state signals cyclically. The protective relaying system further includes digital data processing unit connected to receive cyclically the logical state signal, for producing a first and a second serial logical state signals and for judging whether a phase-rotation sequence of the first and second serial logical state signals equals a predetermined sequence to produce a protection relay output signal. The protection relay output signal is used to trip the circuit breaker.
摘要翻译： 一种保护继电系统，其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。 保护继电系统包括输入转换单元，其适于连接电力系统以接收对应于电流和电压的第一和第二输入信号，并且用于转换第一和第二输入信号的幅度和/或相位以产生 第一，第二和第三电量。 保护性中继系统还包括连接以接收第一，第二和第三电量的比较单元，用于比较第一和第二电量以产生第一逻辑状态信号，以及比较第三和第四电量以产生第二逻辑 状态信号，并循环地产生包括第一和第二逻辑状态信号的逻辑状态信号。 保护中继系统还包括数字数据处理单元，其连接以循环接收逻辑状态信号，用于产生第一和第二串行逻辑状态信号，并且用于判断第一和第二串行逻辑状态信号的相位旋转序列是否等于 预定的顺序产生保护继电器输出信号。 保护继电器输出信号用于跳闸断路器。
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公开(公告)号：US4309767A
公开(公告)日：1982-01-05
申请号：US68334
申请日：1979-08-21
申请人： Fumio Andow , Kyotaro Kondow , Eiichi Okamoto
发明人： Fumio Andow , Kyotaro Kondow , Eiichi Okamoto
CPC分类号： H03M1/1071 , H03M1/1205
摘要： A monitor system comprising:an adder for summing up a plurality of unknown analog electric quantity signals denoting the operating conditions of such as a transmission line;a multiplexer for generating output signals corresponding to the plural analog electric quantity signals and also to a signal denoting the result of addition made by said adder;an A-D converter for converting output analog signals from the multiplexer into digital signals; anda monitor which sums up those of the output digital signals from the A-D converter which correspond to said plural analog electric quantity signals, compares a signal denoting the result of said addition with a digital signal converted from an output signal from the adder, receives an error detection signal denoting the known prescribed electric quantity converted into a digital signal through the multiplexer and A-D converter, and judges the operating condition of the A-D converter from the contents of said received digital signal.
摘要翻译： 一种监视器系统，包括：加法器，用于将表示诸如传输线的操作条件的多个未知模拟电量信号相加; 多路复用器，用于产生对应于多个模拟电量信号的输出信号，并且还包括表示由所述加法器产生的相加结果的信号; 用于将来自多路复用器的输出模拟信号转换成数字信号的A-D转换器; 以及对与所述多个模拟电量信号相对应的来自AD转换器的输出数字信号的总和的监视器，将表示所述相加结果的信号与从加法器的输出信号转换的数字信号进行比较，接收 错误检测信号表示通过多路复用器和AD转换器转换成数字信号的已知规定电量，并从所接收的数字信号的内容判断AD转换器的工作状态。
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公开(公告)号：US4212046A
公开(公告)日：1980-07-08
申请号：US904264
申请日：1978-05-09
申请人： Fumio Andow , Tetsuo Matsushima , Eiichi Okamoto
发明人： Fumio Andow , Tetsuo Matsushima , Eiichi Okamoto
CPC分类号： H02H3/40
摘要： In a digital distance relaying system the principle of comparing the amplitude values of alternating current quantities is used. In one example, amplitude values of V and V-IZ are compared and in the other example the amplitude values of V-IZ and IZ are compared for determining the operating point of the relay system.
摘要翻译： 在数字距离中继系统中，使用比较交流电流量幅值的原理。 在一个示例中，比较V和V-IZ的振幅值，并且在另一示例中，比较V-IZ和IZ的振幅值以确定中继系统的工作点。
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公开(公告)号：US4071873A
公开(公告)日：1978-01-31
申请号：US697756
申请日：1976-06-21
申请人： Fumio Andow , Mitsuru Yamaura , Minoru Kitagawa
发明人： Fumio Andow , Mitsuru Yamaura , Minoru Kitagawa
CPC分类号： H02H3/30 , H02H1/0076
摘要： In a protective relaying system wherein a carrier wave frequency modulated by an electric quantity is transmitted to a receiving station for operating a relay and an abnormal condition of the transmitted signal is detected by detecting the frequency variation of the carrier wave, there is provided an abnormal condition detector which compares the lengths of contiguous or closely adjacent periods, or functions thereof, of the received carrier wave.
摘要翻译： 在通过电量调制的载波频率被发送到用于操作继电器的接收站并且通过检测载波的频率变化来检测发送信号的异常状况的保护中继系统中，存在异常 条件检测器，其比较接收的载波的连续或紧密相邻周期的长度或其功能。
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公开(公告)号：US4056839A
公开(公告)日：1977-11-01
申请号：US650159
申请日：1976-01-19
申请人： Fumio Andow
发明人： Fumio Andow
摘要： In a static protective relay device utilizing a converter including a bandpass filter which causes time delay during transients, there are provided a detector responsive to the output from the converter, and means for preventing misoperation of the detector due to an attenuating oscillation of the output caused by the transient phenomenon of the converter which occurs during attenuation of the output.
摘要翻译： 在采用包括带通滤波器的转换器的静态保护继电器装置中，其在瞬变期间引起时间延迟，提供了响应于转换器的输出的检测器，以及用于防止由于输出引起的衰减振荡引起的检测器误动作的装置 通过在输出衰减期间发生的转换器的瞬态现象。
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公开(公告)号：US4803635A
公开(公告)日：1989-02-07
申请号：US927382
申请日：1986-11-06
申请人： Fumio Andow
发明人： Fumio Andow
摘要： According to the present invention, a sampled value of a reference voltage V.sub.p which is a voltage (in general, a relative voltage to ground, an interphase voltage or a positive sequence voltage) prior to the occurrence of a fault in an electric-power system and a sampled value of the quantity of electricity E (a voltage or current in each phase or a symmetrical component voltage or current) during a fault time period or after the recovery of a fault are used to compute a plurality of functional values capable of specifying the phase angle .theta. or the value of .theta. of said quantity of electricity E in relation to said reference voltage V.sub.p and deliver them as information data. When the relative phase angle between the quantity of electricity E during a fault or after the recovery of a fault and a voltage (reference voltage) V.sub.p prior to the occurrence of a fault is clarified in this manner, the relative phase angles of reference voltages V.sub.p among a plurality of electric stations prior to the occurrence of a fault are computed by obtaining the information of normal operating conditions of the electric power system concerning to a voltage, current, reactive power and the state of a circuit breaker and accomplishing the arithmetic operations of the information thus obtained and the constants of devices and equipment constituting the electric-power system. Therefore, the relative phase angles of the quantity of electricity E among a plurality of electric stations during a fault period or after the recovery of a fault can be clarified.
摘要翻译： 根据本发明，在电力系统中发生故障之前的基准电压Vp的采样值（通常为相对电压，相间电压或正序电压） 并且使用在故障时间段期间或故障恢复之后的电量E（每相中的电压或电流或对称分量电压或电流）的采样值来计算能够指定的多个功能值 所述相位角θ或所述电量E相对于所述参考电压Vp的θ值，并将其作为信息数据传送。 当故障发生时或发生故障恢复后的电量E与发生故障之前的电压（参考电压）Vp之间的相对相位角以此方式得到澄清时，参考电压Vp的相对相位角 在发生故障之前的多个电站中，通过获得关于电压，电流，无功功率和断路器的状态的电力系统的正常工作状态的信息来计算，并完成 所获得的信息和构成电力系统的装置和设备的常数。 因此，可以清楚在故障期间或故障恢复之后的多个电站中的电量E的相对相位角。
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