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    RELAY DEVICE AND CORRESPONDING METHOD
    12.
    发明申请
    RELAY DEVICE AND CORRESPONDING METHOD 有权
    继电器和相关方法

    公开(公告)号：US20080158753A1

    公开(公告)日：2008-07-03

    申请号：US11618192

    申请日：2006-12-29

    申请人： William Premerlani ,  Marcelo Valdes ,  Thomas Frederick Papallo ,  Gregory P. Lavoie ,  Radoslaw Narel

    发明人： William Premerlani ,  Marcelo Valdes ,  Thomas Frederick Papallo ,  Gregory P. Lavoie ,  Radoslaw Narel

    IPC分类号： H02H3/00

    CPC分类号： H02H7/30 ,  H02H3/28 ,  H02H3/387

    摘要： A method of operating a relay device, the method comprising the steps of: computing positive-sequence first and second current-phasor for the first and second main circuit-breakers and computing currents from phasors, and the bus-tie-breaker; computing positive-sequence voltage for the bus-tie-breaker; triggering a method when at least one fault current at the bus-tie-breaker exceeds a threshold, without the presence of a fault on one of the feeders; determining whether the fault is internal or external, wherein the fault is internal if the positive-sequence current of the first and second main circuit breakers is in phase; and wherein if the positive-sequence current through the first main circuit breaker is not in-phase with the positive-sequence current through the second main circuit breaker, the fault is external to the bus; determining whether the fault is on a first or second side of the tie circuit; and locating the fault.

    摘要翻译： 一种操作中继装置的方法，所述方法包括以下步骤：计算第一和第二主断路器的正序第一和第二电流相量以及来自相量和总线断路器的计算电流; 计算总线断路器的正序电压; 当总线断路器上的至少一个故障电流超过阈值时，在一个馈线上不存在故障的情况下触发方法; 确定故障是内部还是外部，其中如果第一和第二主断路器的正序电流同相，则故障是内部的; 并且其中，如果通过所述第一主断路器的正序电流与通过所述第二主断路器的正序电流不同相，则所述故障位于所述总线外部。 确定所述故障是否在所述连接电路的第一侧或第二侧上; 并定位故障。

    System and method for synchronized phasor measurement
    13.
    发明申请
    System and method for synchronized phasor measurement 有权
    用于同步相量测量的系统和方法

    公开(公告)号：US20060247874A1

    公开(公告)日：2006-11-02

    申请号：US11119113

    申请日：2005-04-29

    申请人： William Premerlani ,  Bogdan Kasztenny ,  Mark Adamiak

    发明人： William Premerlani ,  Bogdan Kasztenny ,  Mark Adamiak

    IPC分类号： G01R19/00

    CPC分类号： G01R19/2513 ,  Y02E60/728 ,  Y04S10/265

    摘要： A phasor measurement system is provided for computing synchronized phasor measurements. The phasor measurement system includes acquisition circuitry for acquiring voltage or current values from a power line, sampling circuitry for sampling the voltage or current values, and processing circuitry for computing a phasor and at least one time derivative of the phasor based on the sampled voltage or current values and for computing a synchronized phasor value based on the phasor and the at least one time derivative of the phasor.

    摘要翻译： 提供相量测量系统用于计算同步相量测量。 相量测量系统包括用于从电力线获取电压或电流值的采集电路，用于对电压或电流值进行采样的采样电路，以及用于基于采样电压计算相量和相量的至少一次时间导数的处理电路， 基于相量和相量的至少一个时间导数来计算同步相量值的当前值。

    Method for canceling transient errors in unsynchronized digital current differential transmission line protection systems
    14.
    发明申请
    Method for canceling transient errors in unsynchronized digital current differential transmission line protection systems 失效

    公开(公告)号：US20050049806A1

    公开(公告)日：2005-03-03

    申请号：US10652151

    申请日：2003-08-29

    申请人： William Premerlani

    发明人： William Premerlani

    IPC分类号： G01R19/00 ,  G01R19/25 ,  G01R31/00 ,  G06F19/00

    CPC分类号： G01R19/2513

    摘要： A method for determining transient errors in an unsynchronized, digital current differential transmission line protection system includes receiving a first current phasor measurement at a time, t, and receiving a second current phasor measurement at time t. The second current phasor is adjusted so as to account for a determined offset between a first sampling clock associated with the first current phasor measurement and a second sampling clock associated with the second current phasor measurement, thereby resulting in a rotated second current phasor measurement. A residual transient error is then obtained from the rotated second current phasor measurement and the first current phasor measurement.

    Relay device and corresponding method
    15.
    发明授权
    Relay device and corresponding method 有权
    继电器及相应的方法

    公开(公告)号：US07599161B2

    公开(公告)日：2009-10-06

    申请号：US11618192

    申请日：2006-12-29

    申请人： William Premerlani ,  Marcelo Valdes ,  Thomas Frederick Papallo, Jr. ,  Gregory P. Lavoie ,  Radoslaw Narel

    发明人： William Premerlani ,  Marcelo Valdes ,  Thomas Frederick Papallo, Jr. ,  Gregory P. Lavoie ,  Radoslaw Narel

    IPC分类号： H02H7/00

    CPC分类号： H02H7/30 ,  H02H3/28 ,  H02H3/387

    摘要： A method of operating a relay device, in an electrical circuit comprising first and second main circuit breakers, and a bus tie circuit breaker connecting the first and second main circuit breakers, the method comprising computing a first positive sequence current phasor for the first main circuit breaker and a second positive sequence current phasor for the second main circuit breaker computing a first positive sequence voltage phasor for the first main circuit breaker and a second positive sequence voltage phasor for the second main circuit breaker; computing a correction of the first positive sequence voltage and second positive sequence voltage to a line-to-neutral phase angle reference if there is any rotation in a potential transformer connection; determining a fault has occurred when a magnitude of a current through at least one of the first main circuit breaker or the second main circuit breaker exceeds a predetermined threshold; determining a phase angle difference by comparing the phase angle of the positive sequence current phasor with the phase angle of the positive sequence voltage phasor for both the first main circuit breaker or the second main circuit breaker having the magnitude of current determined to have exceeded the predetermined level; and determining the fault is located upstream or downstream of the first main circuit breaker or the second main circuit breaker having the magnitude of current determined to have exceeded the predetermined level, if the phase angle difference is determined to be above a predetermined amount.

    摘要翻译： 一种在包括第一和第二主断路器的电路中的中继装置的操作方法和连接第一和第二主断路器的总线连接断路器，该方法包括：计算第一主电路的第一正序电流相量 断路器和用于第二主断路器的第二正序电流相量计算第一主断路器的第一正序电压相量和用于第二主断路器的第二正序电压相量; 如果在电压互感器连接中存在任何旋转，则将第一正序电压和第二正序电压的校正计算为线到中性相角参考; 当通过第一主断路器或第二主断路器中的至少一个的电流的大小超过预定阈值时，发生故障; 通过将正序电流相量的相位角与正序电压相量的相位角进行比较来确定相位角差，第一主断路器或具有确定超过预定值的电流大小的第二主断路器 水平; 并且如果相位角差被确定为高于预定量，则确定故障位于具有被确定为已经超过预定水平的电流大小的第一主断路器或第二主断路器的上游或下游。

    Relay device and corresponding method
    16.
    发明授权
    Relay device and corresponding method 有权
    继电器及相应的方法

    公开(公告)号：US07542256B2

    公开(公告)日：2009-06-02

    申请号：US11618175

    申请日：2006-12-29

    申请人： William Premerlani ,  Marcelo Valdes ,  Thomas Frederick Papallo, Jr. ,  Radoslaw Narel ,  Gregory P. Lavoie

    发明人： William Premerlani ,  Marcelo Valdes ,  Thomas Frederick Papallo, Jr. ,  Radoslaw Narel ,  Gregory P. Lavoie

    IPC分类号： H02H7/00

    CPC分类号： H02H7/30 ,  H02H3/081

    摘要： A method of operating a relay device, the method comprising the steps of: providing main circuit-breakers and a bus-tie-breaker connecting the main-circuit-breakers; defining a partial-differential-zone comprising a main circuit breaker and the bus-tie breaker; assigning a first value to the direction of the fault current flowing into the partial differential zone;—assigning a second value to the direction of the fault currents flowing out of the partial-differential-zone, wherein the first value is not equal to the second value;—comparing the values assigned to the fault currents; determining if the fault currents are flowing into the partial differential zone; and determining if at least two of the fault-currents is flowing in a different direction with respect to the partial-differential-zone wherein one of the fault currents is flowing into the partial-differential-zone and one of the fault currents is flowing out of the partial differential zone.

    摘要翻译： 一种操作中继装置的方法，所述方法包括以下步骤：提供主断路器和连接所述主断路器的总线断路器; 限定包括主断路器和母线断路器的部分差分区; 向流入所述部分差分区域的故障电流的方向分配第一值; - 将第二值分配到从所述部分差分区域流出的故障电流的方向，其中所述第一值不等于所述第二值 值; - 比较分配给故障电流的值; 确定故障电流是否流入偏差区; 以及确定至少两个故障电流是否相对于其中一个故障电流流入部分差分区并且其中一个故障电流流出的部分差分区在不同的方向上流动 的偏差区。

    System and method of locating ground fault in electrical power distribution system
    18.
    发明申请
    System and method of locating ground fault in electrical power distribution system 有权
    配电系统接地故障定位系统及方法

    公开(公告)号：US20060125486A1

    公开(公告)日：2006-06-15

    申请号：US11009111

    申请日：2004-12-10

    申请人： William Premerlani ,  Rui Zhou ,  Yan Liu ,  Thomas Papallo ,  Gregory Lavoie ,  Marcelo Valdes ,  Michael Pintar

    发明人： William Premerlani ,  Rui Zhou ,  Yan Liu ,  Thomas Papallo ,  Gregory Lavoie ,  Marcelo Valdes ,  Michael Pintar

    IPC分类号： G01R31/08

    CPC分类号： G01R31/086 ,  Y04S10/522

    摘要： A method for locating a ground fault in an electrical power distribution system includes providing a plurality of current sensors at a plurality of locations in the electrical power distribution system. The method further includes detecting a ground fault in the electrical power distribution system. Current is monitored at a plurality of locations in the electrical power distribution system via the current sensors and a test signal is introduced into the electrical power distribution system via a test signal generating device. The plurality of locations are monitored to locate the ground fault between a location at which the test signal is detected and a downstream location at which the test signal is not detected.

    摘要翻译： 一种用于定位配电系统中的接地故障的方法包括在电力分配系统中的多个位置处提供多个电流传感器。 该方法还包括检测配电系统中的接地故障。 通过电流传感器在电力分配系统中的多个位置处监视电流，并且经由测试信号产生装置将测试信号引入到电力分配系统中。 监视多个位置以在检测到测试信号的位置与未检测到测试信号的下游位置之间定位接地故障。

    METHOD AND SYSTEM FOR COMMUNICATIONS CHANNEL DELAY ASYMMETRY COMPENSATION USING GLOBAL POSITIONING SYSTEMS
    20.
    发明申请
    METHOD AND SYSTEM FOR COMMUNICATIONS CHANNEL DELAY ASYMMETRY COMPENSATION USING GLOBAL POSITIONING SYSTEMS 有权
    使用全球定位系统进行通信信道延迟不对称补偿的方法和系统

    公开(公告)号：US20050036254A1

    公开(公告)日：2005-02-17

    申请号：US10605138

    申请日：2003-09-10

    申请人： William Premerlani ,  Bogdan Kasztenny ,  Ilia Voloh

    发明人： William Premerlani ,  Bogdan Kasztenny ,  Ilia Voloh

    IPC分类号： H02H7/26 ,  H04J3/06 ,  H02H3/00

    CPC分类号： H04J3/0682 ,  H02H3/302 ,  H02H7/261 ,  H04J3/0644 ,  H04J3/14 ,  H04J2203/006

    摘要： A method for compensating for communications channel delay asymmetry in a current differential protection system includes determining an apparent sampling clock offset for a communications channel, the apparent sampling clock offset between a first sampling clock and a second sampling clock configured within the current differential protection system. An apparent global positioning system (GPS) clock offset is determined for the communications channel, the apparent GPS clock offset between a plurality of GPS time stamps corresponding to the first and said second sampling clocks. A compensated clock offset is determined by subtracting the apparent GPS clock offset from the apparent sampling clock offset so as to cancel out a channel asymmetry component of deviation in the apparent GPS and sampling clock off-sets.

    摘要翻译： 用于补偿电流差动保护系统中的通信信道延迟不对称的方法包括确定通信信道的表观采样时钟偏移量，在第一采样时钟和在当前差动保护系统内配置的第二采样时钟之间的视在采样时钟偏移。 为通信信道确定明显的全球定位系统（GPS）时钟偏移，对应于第一和第二采样时钟的多个GPS时间戳之间的视在GPS时钟偏移。 通过从表观采样时钟偏移中减去表观GPS时钟偏移量来确定补偿时钟偏移，以抵消视在GPS和采样时钟偏移中的偏差的信道不对称分量。