METHOD AND APPARATUS FOR DETECTING COMMUNICATION CHANNEL DELAY ASYMMETRY

    公开(公告)号:EP2520040B1

    公开(公告)日:2018-11-14

    申请号:EP09852745.0

    申请日:2009-12-31

    申请人: ABB Research Ltd.

    摘要: The invention provides a method and apparatus for detecting communication channel delay asymmetry between transmission line protection devices. The method comprises: calculating, repeatedly, clock disparity between clocks of the protection devices and communication delays at different paths of the communication channel; comparing the latest calculated clock disparity and communication delays with previously calculated clock disparities and communication delays, respectively; determining a channel switching has happened if a change of the calculated clock disparity exceeds a first threshold, or a change of the calculated communication delays for any path exceeds a second threshold; and determining the channel delays as asymmetrical if a difference between the calculated communication delays of the different paths after the channel switching exceeds a third threshold.

    SCHUTZVORRICHTUNG FÜR EINE ELEKTRISCHE ENERGIEVERSORGUNGSEINRICHTUNG UND ELEKTRISCHE ENERGIEVERSORGUNGSEINREICHTUNG MIT EINER DERARTIGEN SCHUTZVORRICHTUNG
    7.
    发明公开
    SCHUTZVORRICHTUNG FÜR EINE ELEKTRISCHE ENERGIEVERSORGUNGSEINRICHTUNG UND ELEKTRISCHE ENERGIEVERSORGUNGSEINREICHTUNG MIT EINER DERARTIGEN SCHUTZVORRICHTUNG 审中-公开
    保护装置的电力供给装置和电动ENERGIEVERSORGUNGSEINREICHTUNG这样的保护器

    公开(公告)号:EP3148028A1

    公开(公告)日:2017-03-29

    申请号:EP16187767.5

    申请日:2016-09-08

    摘要: Eine Schutzvorrichtung (100,300,400) für eine wenigstens eine Energiequelle (102), insbesondere mit geringer Überstromfähigkeit, eine Energieübertragungseinrichtung (103,303,403) mit wenigstens einem Netzstrang (104,105,106,304,404) und an jedem Netzstrang wenigstens eine angeschlossene Last (107) umfassende elektrische Energieversorgungseinrichtung (101,301,401), die selektiv eingegrenzte Bestandteile der Energieübertragungseinrichtung und die Energiequelle schützt, enthält je Netzstrang eine Lastschutzstufe (108,109,110,308), über die die wenigstens eine Last angeschlossen ist, eine Quellenschutzstufe (111) zum Abschalten der Energiequelle bei Unteroder Überspannung an der Energiequelle, in jeder Lastschutzstufe eine Messeinrichtung (150,151,350,351) zum Detektieren eines Strangstroms (IL,IL1,IL2,IL3) und einer Lastspannung (UL,UL1,UL2,UL3) sowie eine Schaltvorrichtung (153,353) zum Trennen des Netzstrangs von der Energiequelle, wenn der Strangstrom einen vorgebbaren Grenzwert überschreitet, und eine zentrale Steuerstufe (112,312) zum für jeden Netzstrang Vergleichen der Lastspannung mit einer Quellenspannung (UQ) und zum selektiven Trennen derjenigen Netzstränge, in denen zwischen der Lastspannung und der Quellenspannung eine Abweichung vorbestimmter Größe auftritt.

    摘要翻译: 的保护装置(100300400),用于至少一个功率源(102),特别是具有低的过电流能力,能量转移装置(103303403)与至少一条电力线(104,105,106,304,404),并且在每一个网络线路中的至少一个连接的负载(107),包括:电力供应装置(101301401),则 选择性地保护动力传递装置和动力源的局部组件,每个通过该负载被至少连接到源极保护级(111)的动力传动系的负载保护级别(108109110308)含有用于在关断能量源子或过电压的电源,测量装置(在每个负载保护级别 150151350351)(用于检测相电流IL,IL1,IL2,IL3)和负载电压(UL,UL1,UL2,UL3),以及用于从电源分离所述动力传动系统中的开关装置(153.353)当相电流可预先确定的Grenzwe 室温超过,并且对于每个网络链上的负载电压与源极电压(UQ)和用于有选择地分离,其中所述负载电压和所述源电压之间产生预定大小的偏差的那些目链进行比较的中央控制电路(112.312)。

    Fault protection for aircraft power systems
    8.
    发明公开
    Fault protection for aircraft power systems 审中-公开
    FehlerschutzfürFlugzeugstromversorgungssysteme

    公开(公告)号:EP2658062A2

    公开(公告)日:2013-10-30

    申请号:EP13163197.0

    申请日:2013-04-10

    IPC分类号: H02H3/093 H02H3/30

    摘要: A system and method for protecting a power system (102, 200). A generator (106, 202) is tripped in response to identifying a current on the generator (106, 202) that is greater than a first current threshold for a first time delay. The generator (106, 202) is also tripped in response to identifying the current on the generator (106, 202) that is greater than a second current threshold for a second time delay. The first current threshold is larger than the second current threshold and the first time delay is shorter than the second time delay.

    摘要翻译: 一种用于保护电力系统(102,200)的系统和方法。 响应于在发电机(106,202)上识别大于第一时间延迟的第一电流阈值的电流,发生器(106,202)跳闸。 响应于在发电机(106,202)上识别大于第二时间延迟的第二电流阈值的电流,发生器(106,202)也跳闸。 第一电流阈值大于第二电流阈值,并且第一时间延迟小于第二时间延迟。

    Power management and distribution system having a fault detection and isolation assembly and method
    9.
    发明公开
    Power management and distribution system having a fault detection and isolation assembly and method 审中-公开
    功率管理和分发系统,故障检测和隔离的设备和方法

    公开(公告)号:EP2654154A2

    公开(公告)日:2013-10-23

    申请号:EP13164208.4

    申请日:2013-04-17

    IPC分类号: H02H3/30 H02H7/26

    CPC分类号: H02H3/305 H02H3/027 H02H7/261

    摘要: A power management and distribution system (10, 100, 200) includes a source block (20) having a source switch (22) and a power distribution line (21), wherein the power distribution line (21) includes a distribution switch (24). At least one load block (28, 102, 202) is in operable communication with the power distribution line (21) and having a plurality of load block power output lines, wherein each of the plurality of load block power output lines includes a load switch (32). Further included is a plurality of loads (34) each carried power by at least one of the plurality of load block power output lines. Yet further included is a protection logic unit (14) comprising at least one algorithm for comparing a power characteristic to a power characteristic threshold at a plurality of locations, wherein the protection logic unit selectively determines which of the source block switches (22), distribution switches (24) and the load switches (32) of the plurality of load block power output lines are opened based on at least one comparison.

    摘要翻译: 一种功率管理和分配系统(10,100,200)包括具有源开关(22)和配电线(21)的源极块(20),其中,所述配电线(21)包括分配开关(24 )。 至少一个负载块(28,102,202)与所述配电线(21)和具有负载块输出功率线。多个可操作地连通,worin每个负载块功率输出线,所述多个包括一个负载开关 (32)。 进一步包括的是负载的多个(34),每个功率携带通过的负载块功率输出线,所述多个的至少一个。 再进一步包括一保护逻辑单元(14),包括至少一个算法bestimmt源块的开关的哪一个(22),分布选择性地的位置的多个进行比较的功率特性到功率特性阈值,worin保护逻辑单元 开关(24)和负载块功率输出线,所述多个负载开关(32)被打开基于至少一个比较。

    Relay for pilot protection of electrical power lines
    10.
    发明公开
    Relay for pilot protection of electrical power lines 失效
    RelaisfürPilot-Schutz von elektrischen Energie-Leitungen。

    公开(公告)号:EP0119744A1

    公开(公告)日:1984-09-26

    申请号:EP84301003.4

    申请日:1984-02-16

    发明人: Udren, Eric Avram

    IPC分类号: H02H3/38 H02H3/30

    CPC分类号: H02H3/38 H02H3/081 H02H7/262

    摘要: Logic circuitry for a directional comparison blocking protective relay scheme is described. A forward-reaching and a reverse-reaching protective relay (38) located at the local and remote terminals of a protected line segment (43) determine whether a fault is internal or external to the protected line segment. To carry out this function, the protective relays produce signals (64, 70, 68, 62) representative of fault location and communicate with each other via a communications channel (65). Processing the signals at each terminal is performed to determine the fault location and avoid tripping when the fault character changes. By using fault detectors to determine the existence of a fault, the logic at each terminal for combining the signals is simplified and security against false tripping is improved.

    摘要翻译: 描述了用于方向比较阻塞保护中继方案的逻辑电路。 位于受保护线路段(43)的本地和远程终端的前向和反向保护继电器(38)确定故障是否在受保护线路段内部或外部。 为了执行此功能,保护继电器产生代表故障位置的信号(64,70,68,62),并通过通信通道(65)相互通信。 执行每个终端处理信号以确定故障位置,并避免故障字符变化时跳闸。 通过使用故障检测器来确定是否存在故障,用于组合信号的每个终端处的逻辑被简化,并且提高了针对错误跳闸的安全性。