公开(公告)号：US10073148B2

公开(公告)日：2018-09-11

申请号：US14411215

申请日：2012-06-26

申请人： Pierre Janssen ,  Jean-Claude Maun

发明人： Pierre Janssen ,  Jean-Claude Maun

IPC分类号： H02J3/00 ,  G01R31/40 ,  H02H7/26 ,  H02H3/00 ,  H02S50/10 ,  H02J13/00

CPC分类号： G01R31/40 ,  H02H3/006 ,  H02H7/261 ,  H02J3/00 ,  H02J13/0006 ,  H02J2003/007 ,  H02S50/10 ,  Y02E60/724 ,  Y02E60/725 ,  Y02E60/74 ,  Y02E60/76 ,  Y04S10/18 ,  Y04S10/20 ,  Y04S10/30 ,  Y04S40/22

摘要： A method for detecting a fault in an energy supply network. State values are determined for a plurality of measuring points. The state values, which specify an electrical state of the energy supply network at the respective measuring point, are transmitted to a control center. The state values are used by an evaluation device for detecting a fault in the energy supply network. In order to detect errors in energy supply networks with low short-circuit currents with high reliability and selectivity, the evaluation device performs a state estimation, using a model description of the supply network suitable for describing possible electrical states of the energy supply network on the basis of state variables. The estimation examines whether an electrical state at least approximately matches the respective state values, can be described by the model description. If such a state is lacking, the evaluation device generates an fault detection signal.

公开(公告)号：US20150247891A1

公开(公告)日：2015-09-03

申请号：US14427694

申请日：2012-09-12

申请人： Jean-Claude Maun ,  Alicia Valero Masa

发明人： Jean-Claude Maun ,  Alicia Valero Masa

IPC分类号： G01R31/02 ,  G01R31/40

CPC分类号： G01R31/025 ,  G01R31/40 ,  H02H1/0015 ,  H02H1/0092

摘要： A method detects a high-impedance fault occurring in an electric distribution circuit that distributes a three-phase alternating current. The method includes the steps of applying a plurality of electrical signal analysis techniques that provide a plurality of fault detection indicators, and generating a signal that indicates a high-impedance fault depending on the outcome of the fault detection indicators. The method is characterized by determining a randomness of the residual current of the three-phase alternating current prior to determining the plurality of fault detection indicators, and generating a trigger signal depending on the randomness of the residual current. The step of determining the plurality of fault detection indicators requires that the trigger signal has been generated.

摘要翻译： 一种方法检测在分配三相交流电的配电电路中发生的高阻抗故障。 该方法包括以下步骤：应用提供多个故障检测指示符的多个电信号分析技术，以及根据故障检测指示符的结果产生指示高阻抗故障的信号。 该方法的特征在于在确定多个故障检测指示符之前确定三相交流电流的剩余电流的随机性，并根据剩余电流的随机性产生触发信号。 确定多个故障检测指示器的步骤要求已经生成了触发信号。