Control of circuit breakers in a multi-phase power system
    2.
    发明申请
    Control of circuit breakers in a multi-phase power system 有权
    控制多相电力系统中的断路器

    公开(公告)号:US20060279884A1

    公开(公告)日:2006-12-14

    申请号:US11147964

    申请日:2005-06-08

    IPC分类号: H02H9/08

    CPC分类号: H02H7/30

    摘要: There is provided a method of controlling circuit breakers in a multi-phase power system. The method includes (a) recognizing a concurrent presence of a first fault in a first phase of the power system and a second fault in a second phase of the power system, where the power system includes a first circuit breaker situated to conduct a fault current between the first and second phases; and (b) controlling a second circuit breaker to open so that the fault current is interrupted, where the second circuit breaker, when closed, provides current to the first circuit breaker.

    摘要翻译: 提供了一种在多相电力系统中控制断路器的方法。 该方法包括(a)识别电力系统的第一阶段中的第一故障的并发存在以及电力系统的第二阶段中的第二故障,其中所述电力系统包括位于所述故障电流 在第一和第二阶段之间; 和(b)控制第二断路器打开以使故障电流中断,其中第二断路器在闭合时向第一断路器提供电流。

    System and method of locating ground fault in electrical power distribution system
    3.
    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

    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。

    Circuit protection system
    5.
    发明申请
    Circuit protection system 审中-公开
    电路保护系统

    公开(公告)号:US20070002506A1

    公开(公告)日:2007-01-04

    申请号:US11171118

    申请日:2005-06-30

    IPC分类号: H02H7/04

    CPC分类号: H02H7/30 H02H7/045

    摘要: A circuit protection system is provided that provides simultaneous bus differential and transformer differential protection for a power distribution system. The circuit protection system can obviate the need for a circuit breaker disposed between the transformer and the power bus due to the un-delayed tripping of the upstream circuit breaker. The circuit protection system can also provide multiple layers of protection both upstream and downstream of the transformer and the power bus.

    摘要翻译: 提供了一种电路保护系统,为配电系统提供同步总线差分和变压器差动保护。 由于上游断路器的非延迟跳闸,电路保护系统可以避免设置在变压器和电力总线之间的断路器的需要。 电路保护系统还可以在变压器和电源总线的上游和下游提供多层保护。

    Method and system for controlling a power distribution system
    6.
    发明授权
    Method and system for controlling a power distribution system 有权
    用于控制配电系统的方法和系统

    公开(公告)号:US08032260B2

    公开(公告)日:2011-10-04

    申请号:US11290008

    申请日:2005-11-30

    IPC分类号: G05D15/00

    摘要: A method and system for a power distribution system are provided. The method includes determining at a central controller normal mode configuration settings for a plurality of circuit breakers of the power distribution system and determining at the central controller alternate mode configuration settings for the plurality of circuit breakers of the power distribution system. The method further includes controlling with the central controller the operation of the plurality of circuit breakers based on the normal mode configuration settings and the alternate mode configuration settings.

    摘要翻译: 提供一种用于配电系统的方法和系统。 该方法包括在中央控制器处确定用于配电系统的多个断路器的正常模式配置设置,以及在中央控制器处确定配电系统的多个断路器的交替模式配置设置。 该方法还包括基于正常模式配置设置和备用模式配置设置,通过中央控制器控制多个断路器的操作。

    RELAY DEVICE AND CORRESPONDING METHOD
    7.
    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

    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。

    Relay device and corresponding method
    8.
    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

    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
    9.
    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

    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。