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公开(公告)号：EP0783788A1
公开(公告)日：1997-07-16
申请号：EP95933317.0
申请日：1995-09-26
CPC分类号： H02H3/283 , H02H7/0455
摘要： A current differential protection arrangement for an electric energy supply unit has a measurement value pre-processing device and an evaluating device that checks whether the calculated differential and stabilisation current values lie in a locking or in a triggering range based on a predetermined relation between the differential current and a stabilisation current (characteristic reaction curve). An additional stabilisation range is provided in the locking range. In order to prevent such a protection device from causing a time-locked blocking state following an outer defect and causing saturation of the converter, the evaluating device (21) has a checking device (30) in a stabilising circuit (25) that checks whether the calculated current values define a point in the additional stabilisation range (31). If that is the case, a locking signal is generated to activate a locking device (37) arranged downstream of the checking device (30). When the detected current values subsequently define for the first time a point located outside of the additional stabilisation range (31), a time function element (40) is switched whose output is connected to a resetting input of the blocking device (38).
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公开(公告)号：EP0453196B1
公开(公告)日：1996-07-17
申请号：EP91303273.6
申请日：1991-04-12
IPC分类号： H02H7/045
CPC分类号： G06F11/1435 , H02H7/0455
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公开(公告)号：EP4415195A1
公开(公告)日：2024-08-14
申请号：EP23156131.7
申请日：2023-02-10
发明人： Kerger, Torsten , Matussek, Robert , Mieske, Frank
IPC分类号： H02H3/44
CPC分类号： H02H3/44 , H02H1/043 , H02H3/34 , H02H7/0455
摘要： Um ein Verfahren zum Erzeugen eines Fehlersignals (F), das einen Fehler in einer Energieübertragungsanlage (11) anzeigt, zu schaffen, bei dem an wenigstens einer vorgegebenen Messstelle ein Leiterstrom (I1, I2, I3, I4) in jeder Phase X einer mehrphasigen Leitung gemessen und numerisch eine erste Ableitung eines jeden Leiterstroms (I1, I2, I3, I4) oder eines aus mehreren Leiterströmen ermittelten Stroms (iDiff_x) gebildet wird, mit Hilfe von Prüfkriterien geprüft wird, ob in der Energieübertragungsanlage (11) ein Einschaltvorgang durchgeführt wird, und das Erzeugen des Fehlersignals (F) blockiert wird, solange der Einschaltvorgang anhält, wobei ein erstes Prüfungskriterium erfüllt ist, wenn alle ersten Ableitungen gleichzeitig für ein vorgegebenes Mindestzeitintervall pro Periodendauer des Stromes gleichzeitig einen vorgegebenen ersten Schwellenwert unterschreiten, bei dem Einschaltvorgänge besonders zuverlässig erkannt werden, wird vorgeschlagen, dass bei Erfüllung des ersten Prüfkriteriums die Steigung jeder numerischen ersten Ableitung im Bereich eines Vorzeichenwechsels der jeweiligen ersten Ableitung ermittelt wird, wobei ein zweites Prüfkriterium erfüllt ist, wenn die Steigung der ersten Ableitung einen zweiten Schwellenwert unterschreitet, und wobei das Erzeugen des Fehlersignals blockiert wird, wenn das erste und das zweite Prüfkriterium erfüllt sind .
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公开(公告)号：EP3108554B1
公开(公告)日：2017-12-13
申请号：EP14714982.7
申请日：2014-03-28
CPC分类号： G01R31/025 , G01R31/40 , H02H7/0455 , H02H7/06
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公开(公告)号：EP3108554A1
公开(公告)日：2016-12-28
申请号：EP14714982.7
申请日：2014-03-28
CPC分类号： G01R31/025 , G01R31/40 , H02H7/0455 , H02H7/06
摘要： The invention relates to a differential protection method for generating a fault signal which indicates that a fault has occurred in the region of an electrical component (11) of an energy supply network, wherein current measurement values are measured at each of at least two different measurement points (12a, 12b) of the component and differential current values and stabilization values are formed using the current measurement values, and the fault signal is generated if, within the context of a tripping range test, it is determined that a measured value pair, formed from one of the differential current values and the respectively associated stabilization value, lies in a predetermined tripping range. In order to configure this type of differential protection method in such a way that, at comparatively low complexity, a reliable generation of a fault signal can be guaranteed only when faults are actually present in the region of the electrical component, according to the invention the stabilization current values in a predetermined observation period are compared with the respective associated differential current values and, based on the comparison, a fault indicator is formed, which indicates whether the proportion of the differential current values or the proportion of the stabilization current values is greater, and the generation of the fault signal is blocked if the fault indicator indicates a greater proportion of the stabilization current values. The invention also relates to a corresponding differential protection device.
摘要翻译： 差分保护方法产生指示在能量供应网络的电气部件处发生故障的故障信号。 差分电流值和稳定值由分量的不同测量点处的电流测量值形成，并且如果由差分电流值和相应的稳定值之一形成的测量值对位于预定的 跳闸范围 将预定观察期间的稳定电流值与各自相关联的差分电流值进行比较，并且基于比较，形成故障指示器，其指示差动电流值的比例或稳定电流值的比例是否为 更大。 如果故障指示符表示稳定电流值的较大比例，故障信号的产生将被阻止。
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公开(公告)号：EP2223404B1
公开(公告)日：2015-05-27
申请号：EP08857782.0
申请日：2008-11-21
CPC分类号： H02H7/0455 , H02H1/043 , H02H3/44
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公开(公告)号：EP2680385A9
公开(公告)日：2014-03-05
申请号：EP12174387.6
申请日：2012-06-29
申请人： ABB Technology AG
发明人： Tausa, Mika , Vanhala, Kari
IPC分类号： H02H3/26
CPC分类号： H02H3/343 , H02H3/283 , H02H3/347 , H02H7/045 , H02H7/0455
摘要： A method in a three-terminal differential protection comprises measuring a terminal phase current ( I T 1( y ) , I T 2( y ) , I T 3( y ) ), at each terminal (T1, T2, T3) of a protected zone of the differential protection in each phase (L1, L2, L3) to be protected and determining a bias current ( I b ( y ) ) of the phase on the basis of the terminal phase currents ( I T 1( y ) , I T 2( y ) , I T 3( y ) ). The bias current determination comprises subtracting phasor values of the terminal phase currents of two terminals from the phasor value of the terminal phase current of one terminal. The terminal phase current being a minuend in the phasor difference computation is selected on the basis of the phase angles or amplitudes of the terminal phase currents.
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18.发明公开
公开(公告)号：EP2680385A1
公开(公告)日：2014-01-01
申请号：EP12174387.6
申请日：2012-06-29
申请人： ABB Technology AG
发明人： Tausa, Mika , Vanhala, Kari
IPC分类号： H02H3/26
CPC分类号： H02H3/343 , H02H3/283 , H02H3/347 , H02H7/045 , H02H7/0455
摘要： A method in a three-terminal differential protection comprises measuring a terminal phase current ( I T 1( y ) , I T 2( y ) , I T 3( y ) ), at each terminal (T1, T2, T3) of a protected zone of the differential protection in each phase (L1, L2, L3) to be protected and determining a bias current ( I b ( y ) ) of the phase on the basis of the terminal phase currents ( I T 1( y ) , I T 2( y ) , I T 3( y ) ). The bias current determination comprises subtracting phasor values of the terminal phase currents of two terminals from the phasor value of the terminal phase current of one terminal. The terminal phase current being a minuend in the phasor difference computation is selected on the basis of the phase angles or amplitudes of the terminal phase currents.
摘要翻译： 三端差分保护的方法包括在保护区的保护区的每个终端（T1，T2，T3）处测量终端相电流（IT 1（y），IT 2（y），IT 3（y） 根据端子相电流（IT 1（y），IT 2（y））确定相位保护的各相（L1，L2，L3）的差动保护和相位的偏置电流（I b（y） ），IT 3（y））。 偏置电流确定包括从一个端子的端子相电流的相量值中减去两个端子的端子相电流的相量值。 基于相位角或相位电流的振幅，选择相量差计算中的终端相电流。
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19.发明公开VERFAHREN UND SCHUTZGERÄT ZUM ERZEUGEN EINES FEHLERSIGNALS, DAS EINEN WINDUNGSFEHLER IN EINEM TRANSFORMATOR ANZEIGT 有权方法和装置，产生故障信号增加具有WINDUNGSFEHLER在变压器TO DISPLAY
公开(公告)号：EP2329580A1
公开(公告)日：2011-06-08
申请号：EP09783477.4
申请日：2009-09-28
CPC分类号： H02H7/0455 , H02H3/44
摘要： The invention relates among other things to a method for producing an error signal indicating a winding error, in particular a winding short, in a transformer, wherein in the method a triggering measurement value is formed using at least one current measurement value and at least one voltage measurement value, said triggering measurement value being compared to a pre-determined triggering limit, and said error signal being produced when the triggering measurement value has reached or exceeds the pre-determined triggering limit.
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公开(公告)号：EP0637865A2
公开(公告)日：1995-02-08
申请号：EP94115566.5
申请日：1991-04-12
IPC分类号： H02H7/045
CPC分类号： G06F11/1435 , H02H7/0455
摘要： The reliability of transformer differential relays is enhanced by providing a method and apparatus which enable improved discrimination between transformer current differentials due to transformer inrush current and current differentials due the occurrence of an internal fault. This improvement in discrimination is provided by generating a first signal representative of currents flowing in at least two windings of the transformer, a second signal representative of a positive portion of the first signal, and a third signal representative of a negative portions of the first signal. A first output signal is generated when the magnitude of the second signal exceeds a first predetermined value, and a second output signal is generated when the magnitude of the third signal exceeds a second predetermined value. A trip signal is generated upon coincidence of the first and second output signals. Additional operate energy is generated when the magnitude of the absolute value of a vector sum operate signal, representative of the vector sum of currents flowing in at least two windings of the transformer, exceeds a first predetermined magnitude. The additional operate energy is terminated and additional restraint energy is generated when the magnitude of a percentage restraint signal, representative of the absolute values of currents flowing in a least two windings of the transformer, exceeds a second predetermined magnitude for a predetermined period of time.
摘要翻译： 变压器差动继电器的可靠性通过提供一种方法和装置得到增强，该方法和装置能够改善由变压器浪涌电流引起的变压器电流差异和由于内部故障的发生引起的电流差异的区分。 通过产生表示在变压器的至少两个绕组中流动的电流的第一信号，表示第一信号的正部分的第二信号和表示第一信号的负部分的第三信号来提供鉴别的这种改进 。 当第二信号的幅度超过第一预定值时产生第一输出信号，并且当第三信号的幅度超过第二预定值时产生第二输出信号。 在第一和第二输出信号一致时产生跳闸信号。 当代表在变压器的至少两个绕组中流动的电流的向量和的矢量和的运算信号的幅值超过第一预定量值时，产生额外的操作能量。 当表示在变压器的至少两个绕组中流动的电流的绝对值的百分比约束信号的幅度在预定时间段内超过第二预定量值时，额外的操作能量终止并产生额外的约束能量。
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