公开(公告)号：WO2015145170A1

公开(公告)日：2015-10-01

申请号：PCT/GB2015/050932

申请日：2015-03-27

申请人： THE UNIVERSITY OF NOTTINGHAM

发明人： THOMAS, David ,  SUMNER, Mark ,  CAO, Yang ,  LI, Jing

IPC分类号： G01R31/08

CPC分类号： G01R31/085 ,  G01R31/026 ,  H02H1/0015

摘要： The invention relates to arc fault location in electrical power circuits, and in particular to methods of locating series arc faults through analysing transient data. Embodiments disclosed include a method of locating a series arc fault (101) in an electrical circuit (300), the method comprising the steps of: sampling current and voltage data from a supply end (303) and a load end (304) of a transmission line of the electrical circuit (300) over a time period covering a fault event; transforming the sampled data into the frequency domain; for a plurality of estimated locations of the fault, calculating an estimated supply end current and an estimated load end current from the transformed sample data; and determining a location of the series arc fault (101) based on a minimum difference between the estimated supply end and load end current data for one of the plurality of estimated locations.

摘要翻译： 本发明涉及电力电路中的电弧故障定位，特别涉及通过分析瞬态数据来定位串联电弧故障的方法。 所公开的实施例包括一种在电路（300）中定位串联电弧故障（101）的方法，所述方法包括以下步骤：从供电端（303）和负载端（304）采样电流和电压数据， 在覆盖故障事件的时间段内的电路（300）的传输线; 将采样数据转换成频域; 对于所述故障的多个估计位置，从所述经变换的采样数据计算估计的供给结束电流和估计的负载结束电流; 以及基于所述多个估计位置之一的估计供应端和负载结束当前数据之间的最小差来确定所述串联电弧故障（101）的位置。

公开(公告)号：WO2013079933A1

公开(公告)日：2013-06-06

申请号：PCT/GB2012/052932

申请日：2012-11-28

申请人： THE UNIVERSITY OF NOTTINGHAM

发明人： THOMAS, David ,  SUMNER, Mark ,  KE, Jia

IPC分类号： G01R31/08

CPC分类号： G01R31/08 ,  G01R31/085 ,  G01R31/088

摘要： A method of locating a fault (14) on an electricity transmission line (12, 12a) is disclosed. The transmission line has a known line impedance and is operable to transport electricity at one or more system frequencies. The method comprises using measurements of the current and voltage made on the line (12, 12a) at one or more frequencies which are different to the system frequency and the known line impedance (Z) to determine a distance to the fault (14). The method may include monitoring the voltage and the current on the transmission line at the one or more non-system frequencies, and determining from the presence of signals at a non-system frequency on the transmission line (12, 12a) that a fault (14) has occurred.

摘要翻译： 公开了一种在电力传输线（12,12a）上定位故障（14）的方法。 传输线具有已知的线路阻抗并且可操作以在一个或多个系统频率下传输电力。 该方法包括以与系统频率和已知线路阻抗（Z）不同的一个或多个频率对线路（12,12a）上产生的电流和电压进行测量，以确定到故障（14）的距离。 该方法可以包括在一个或多个非系统频率处监测传输线上的电压和电流，并且根据传输线（12,12a）上非系统频率处的信号的存在来确定故障（ 14）发生。